/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 13:39:46,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 13:39:46,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 13:39:46,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 13:39:46,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 13:39:46,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 13:39:46,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 13:39:46,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 13:39:46,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 13:39:46,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 13:39:46,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 13:39:46,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 13:39:46,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 13:39:46,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 13:39:46,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 13:39:46,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 13:39:46,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 13:39:46,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 13:39:46,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 13:39:46,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 13:39:46,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 13:39:46,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 13:39:46,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 13:39:46,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 13:39:46,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 13:39:46,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 13:39:46,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 13:39:46,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 13:39:46,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2021-03-24 13:39:46,353 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 13:39:46,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 13:39:46,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 13:39:46,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 13:39:46,354 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 13:39:46,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 13:39:46,354 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 13:39:46,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 13:39:46,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 13:39:46,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 13:39:46,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 13:39:46,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 13:39:46,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 13:39:46,355 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 13:39:46,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 13:39:46,355 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 13:39:46,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 13:39:46,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 13:39:46,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 13:39:46,355 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 13:39:46,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 13:39:46,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 13:39:46,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 13:39:46,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 13:39:46,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 13:39:46,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 13:39:46,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 13:39:46,356 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 13:39:46,356 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 13:39:46,356 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 13:39:46,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 13:39:46,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 13:39:46,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 13:39:46,581 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 13:39:46,586 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 13:39:46,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl [2021-03-24 13:39:46,586 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl' [2021-03-24 13:39:46,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 13:39:46,614 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 13:39:46,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 13:39:46,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 13:39:46,615 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 13:39:46,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:39:46" (1/1) ... [2021-03-24 13:39:46,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:39:46" (1/1) ... [2021-03-24 13:39:46,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 13:39:46,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 13:39:46,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 13:39:46,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 13:39:46,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:39:46" (1/1) ... [2021-03-24 13:39:46,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:39:46" (1/1) ... [2021-03-24 13:39:46,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:39:46" (1/1) ... [2021-03-24 13:39:46,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:39:46" (1/1) ... [2021-03-24 13:39:46,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:39:46" (1/1) ... [2021-03-24 13:39:46,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:39:46" (1/1) ... [2021-03-24 13:39:46,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:39:46" (1/1) ... [2021-03-24 13:39:46,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 13:39:46,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 13:39:46,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 13:39:46,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 13:39:46,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:39:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 13:39:46,684 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-24 13:39:46,684 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-24 13:39:46,684 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-24 13:39:46,684 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-24 13:39:46,684 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-24 13:39:46,685 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-24 13:39:46,685 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-24 13:39:46,685 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-24 13:39:46,685 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-24 13:39:46,685 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-24 13:39:46,685 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-24 13:39:46,685 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-24 13:39:46,685 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-24 13:39:46,685 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-24 13:39:46,685 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-24 13:39:46,686 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-24 13:39:46,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 13:39:46,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 13:39:46,686 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-24 13:39:46,686 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-24 13:39:46,686 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-24 13:39:46,687 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 13:39:46,771 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 13:39:46,771 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-24 13:39:46,772 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:39:46 BoogieIcfgContainer [2021-03-24 13:39:46,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 13:39:46,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 13:39:46,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 13:39:46,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 13:39:46,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:39:46" (1/2) ... [2021-03-24 13:39:46,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376e8c6b and model type example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 01:39:46, skipping insertion in model container [2021-03-24 13:39:46,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:39:46" (2/2) ... [2021-03-24 13:39:46,776 INFO L111 eAbstractionObserver]: Analyzing ICFG example_6.bpl [2021-03-24 13:39:46,780 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 13:39:46,782 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 13:39:46,782 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 13:39:46,831 INFO L149 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2021-03-24 13:39:46,848 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-24 13:39:46,860 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 13:39:46,860 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 13:39:46,860 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 13:39:46,860 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 13:39:46,861 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 13:39:46,861 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 13:39:46,861 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 13:39:46,861 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 13:39:46,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 63 transitions, 264 flow [2021-03-24 13:39:46,952 INFO L129 PetriNetUnfolder]: 129/213 cut-off events. [2021-03-24 13:39:46,952 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2021-03-24 13:39:46,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 213 events. 129/213 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 763 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 187. Up to 60 conditions per place. [2021-03-24 13:39:46,956 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 63 transitions, 264 flow [2021-03-24 13:39:46,967 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 55 transitions, 236 flow [2021-03-24 13:39:46,968 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 13:39:46,977 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 55 transitions, 236 flow [2021-03-24 13:39:46,983 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 55 transitions, 236 flow [2021-03-24 13:39:46,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 55 transitions, 236 flow [2021-03-24 13:39:47,033 INFO L129 PetriNetUnfolder]: 129/211 cut-off events. [2021-03-24 13:39:47,034 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2021-03-24 13:39:47,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 211 events. 129/211 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 621 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 187. Up to 60 conditions per place. [2021-03-24 13:39:47,038 INFO L142 LiptonReduction]: Number of co-enabled transitions 780 [2021-03-24 13:39:47,129 INFO L154 LiptonReduction]: Checked pairs total: 225 [2021-03-24 13:39:47,129 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-24 13:39:47,132 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 164 [2021-03-24 13:39:47,164 INFO L129 PetriNetUnfolder]: 129/204 cut-off events. [2021-03-24 13:39:47,165 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2021-03-24 13:39:47,165 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:47,165 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:47,166 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:47,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:47,174 INFO L82 PathProgramCache]: Analyzing trace with hash -620648734, now seen corresponding path program 1 times [2021-03-24 13:39:47,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:47,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573384503] [2021-03-24 13:39:47,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:47,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:47,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:47,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:47,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:39:47,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:47,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:47,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:47,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573384503] [2021-03-24 13:39:47,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:47,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:39:47,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391671349] [2021-03-24 13:39:47,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:39:47,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:47,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:39:47,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:39:47,298 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 69 [2021-03-24 13:39:47,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 49 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:47,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 69 [2021-03-24 13:39:47,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:47,333 INFO L129 PetriNetUnfolder]: 49/94 cut-off events. [2021-03-24 13:39:47,333 INFO L130 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2021-03-24 13:39:47,333 INFO L84 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 94 events. 49/94 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 279 event pairs, 0 based on Foata normal form. 31/125 useless extension candidates. Maximal degree in co-relation 166. Up to 30 conditions per place. [2021-03-24 13:39:47,336 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 1 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2021-03-24 13:39:47,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 39 transitions, 178 flow [2021-03-24 13:39:47,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:39:47,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:39:47,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2021-03-24 13:39:47,344 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9323671497584541 [2021-03-24 13:39:47,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2021-03-24 13:39:47,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2021-03-24 13:39:47,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:47,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2021-03-24 13:39:47,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,364 INFO L185 Difference]: Start difference. First operand has 38 places, 49 transitions, 224 flow. Second operand 3 states and 193 transitions. [2021-03-24 13:39:47,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 39 transitions, 178 flow [2021-03-24 13:39:47,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 39 transitions, 114 flow, removed 0 selfloop flow, removed 12 redundant places. [2021-03-24 13:39:47,377 INFO L241 Difference]: Finished difference. Result has 28 places, 39 transitions, 112 flow [2021-03-24 13:39:47,379 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=28, PETRI_TRANSITIONS=39} [2021-03-24 13:39:47,379 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, -10 predicate places. [2021-03-24 13:39:47,379 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 39 transitions, 112 flow [2021-03-24 13:39:47,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,380 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:47,380 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:47,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 13:39:47,380 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:47,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:47,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1690452846, now seen corresponding path program 1 times [2021-03-24 13:39:47,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:47,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015374469] [2021-03-24 13:39:47,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:47,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:47,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:47,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:47,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:39:47,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:47,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:47,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015374469] [2021-03-24 13:39:47,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:47,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:39:47,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214602189] [2021-03-24 13:39:47,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:39:47,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:47,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:39:47,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:39:47,421 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 69 [2021-03-24 13:39:47,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 39 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:47,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 69 [2021-03-24 13:39:47,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:47,434 INFO L129 PetriNetUnfolder]: 33/73 cut-off events. [2021-03-24 13:39:47,435 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-24 13:39:47,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 73 events. 33/73 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 189 event pairs, 0 based on Foata normal form. 5/78 useless extension candidates. Maximal degree in co-relation 78. Up to 20 conditions per place. [2021-03-24 13:39:47,438 INFO L132 encePairwiseOnDemand]: 66/69 looper letters, 3 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2021-03-24 13:39:47,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 37 transitions, 114 flow [2021-03-24 13:39:47,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:39:47,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:39:47,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2021-03-24 13:39:47,443 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.927536231884058 [2021-03-24 13:39:47,443 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 192 transitions. [2021-03-24 13:39:47,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 192 transitions. [2021-03-24 13:39:47,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:47,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 192 transitions. [2021-03-24 13:39:47,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,445 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,445 INFO L185 Difference]: Start difference. First operand has 28 places, 39 transitions, 112 flow. Second operand 3 states and 192 transitions. [2021-03-24 13:39:47,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 37 transitions, 114 flow [2021-03-24 13:39:47,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 37 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 13:39:47,446 INFO L241 Difference]: Finished difference. Result has 29 places, 37 transitions, 107 flow [2021-03-24 13:39:47,446 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=29, PETRI_TRANSITIONS=37} [2021-03-24 13:39:47,446 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, -9 predicate places. [2021-03-24 13:39:47,446 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 37 transitions, 107 flow [2021-03-24 13:39:47,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,447 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:47,447 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:47,447 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 13:39:47,447 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:47,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:47,447 INFO L82 PathProgramCache]: Analyzing trace with hash 352539060, now seen corresponding path program 1 times [2021-03-24 13:39:47,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:47,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430304866] [2021-03-24 13:39:47,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:47,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:47,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:47,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:47,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:39:47,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:47,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:47,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:47,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430304866] [2021-03-24 13:39:47,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:47,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:39:47,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394281163] [2021-03-24 13:39:47,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:39:47,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:47,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:39:47,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:39:47,479 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 69 [2021-03-24 13:39:47,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 37 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:47,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 69 [2021-03-24 13:39:47,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:47,486 INFO L129 PetriNetUnfolder]: 12/42 cut-off events. [2021-03-24 13:39:47,486 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-24 13:39:47,486 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 42 events. 12/42 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 0 based on Foata normal form. 7/49 useless extension candidates. Maximal degree in co-relation 49. Up to 8 conditions per place. [2021-03-24 13:39:47,486 INFO L132 encePairwiseOnDemand]: 65/69 looper letters, 2 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2021-03-24 13:39:47,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 34 transitions, 104 flow [2021-03-24 13:39:47,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:39:47,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:39:47,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2021-03-24 13:39:47,488 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.927536231884058 [2021-03-24 13:39:47,488 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 192 transitions. [2021-03-24 13:39:47,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 192 transitions. [2021-03-24 13:39:47,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:47,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 192 transitions. [2021-03-24 13:39:47,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,489 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,489 INFO L185 Difference]: Start difference. First operand has 29 places, 37 transitions, 107 flow. Second operand 3 states and 192 transitions. [2021-03-24 13:39:47,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 34 transitions, 104 flow [2021-03-24 13:39:47,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 34 transitions, 103 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 13:39:47,490 INFO L241 Difference]: Finished difference. Result has 30 places, 34 transitions, 99 flow [2021-03-24 13:39:47,490 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=30, PETRI_TRANSITIONS=34} [2021-03-24 13:39:47,491 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, -8 predicate places. [2021-03-24 13:39:47,491 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 34 transitions, 99 flow [2021-03-24 13:39:47,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,491 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:47,491 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:47,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 13:39:47,491 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:47,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:47,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1582961168, now seen corresponding path program 1 times [2021-03-24 13:39:47,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:47,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809496195] [2021-03-24 13:39:47,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:47,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:47,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:47,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:47,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:39:47,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:47,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:47,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:47,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809496195] [2021-03-24 13:39:47,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:47,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:39:47,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385855070] [2021-03-24 13:39:47,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:39:47,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:47,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:39:47,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:39:47,506 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 69 [2021-03-24 13:39:47,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 34 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:47,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 69 [2021-03-24 13:39:47,507 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:47,512 INFO L129 PetriNetUnfolder]: 1/21 cut-off events. [2021-03-24 13:39:47,512 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-24 13:39:47,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 21 events. 1/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 5/26 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2021-03-24 13:39:47,513 INFO L132 encePairwiseOnDemand]: 64/69 looper letters, 1 selfloop transitions, 1 changer transitions 0/21 dead transitions. [2021-03-24 13:39:47,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 21 transitions, 64 flow [2021-03-24 13:39:47,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:39:47,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:39:47,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2021-03-24 13:39:47,514 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.927536231884058 [2021-03-24 13:39:47,514 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 192 transitions. [2021-03-24 13:39:47,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 192 transitions. [2021-03-24 13:39:47,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:47,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 192 transitions. [2021-03-24 13:39:47,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,515 INFO L185 Difference]: Start difference. First operand has 30 places, 34 transitions, 99 flow. Second operand 3 states and 192 transitions. [2021-03-24 13:39:47,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 21 transitions, 64 flow [2021-03-24 13:39:47,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 21 transitions, 63 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 13:39:47,516 INFO L241 Difference]: Finished difference. Result has 31 places, 21 transitions, 61 flow [2021-03-24 13:39:47,516 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2021-03-24 13:39:47,516 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, -7 predicate places. [2021-03-24 13:39:47,516 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 61 flow [2021-03-24 13:39:47,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,517 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:47,517 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:47,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 13:39:47,517 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:47,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:47,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1170099768, now seen corresponding path program 1 times [2021-03-24 13:39:47,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:47,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301411515] [2021-03-24 13:39:47,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:47,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:47,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:47,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:47,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:47,565 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:39:47,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:39:47,575 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:39:47,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:39:47,588 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:39:47,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:39:47,608 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:39:47,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:39:47,633 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:47,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:47,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:47,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301411515] [2021-03-24 13:39:47,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:47,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:47,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162973283] [2021-03-24 13:39:47,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:47,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:47,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:47,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:47,655 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:47,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 61 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:47,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:47,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:47,740 INFO L129 PetriNetUnfolder]: 159/327 cut-off events. [2021-03-24 13:39:47,740 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:39:47,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 327 events. 159/327 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1516 event pairs, 49 based on Foata normal form. 1/297 useless extension candidates. Maximal degree in co-relation 576. Up to 97 conditions per place. [2021-03-24 13:39:47,742 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 20 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2021-03-24 13:39:47,742 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 151 flow [2021-03-24 13:39:47,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:47,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:47,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:39:47,744 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:39:47,744 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:39:47,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:39:47,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:47,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:39:47,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,747 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,747 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 61 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:39:47,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 151 flow [2021-03-24 13:39:47,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 13:39:47,748 INFO L241 Difference]: Finished difference. Result has 43 places, 26 transitions, 105 flow [2021-03-24 13:39:47,748 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=105, PETRI_PLACES=43, PETRI_TRANSITIONS=26} [2021-03-24 13:39:47,748 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2021-03-24 13:39:47,748 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 26 transitions, 105 flow [2021-03-24 13:39:47,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,749 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:47,749 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:47,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 13:39:47,749 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:47,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:47,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1771331794, now seen corresponding path program 2 times [2021-03-24 13:39:47,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:47,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905001112] [2021-03-24 13:39:47,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:47,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:47,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:47,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:47,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:47,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:47,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:47,787 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:39:47,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:39:47,798 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:39:47,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:39:47,814 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:39:47,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:39:47,834 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:47,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:47,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905001112] [2021-03-24 13:39:47,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:47,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:47,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306876246] [2021-03-24 13:39:47,852 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:47,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:47,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:47,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:47,854 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:47,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 26 transitions, 105 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:47,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:47,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:47,934 INFO L129 PetriNetUnfolder]: 203/536 cut-off events. [2021-03-24 13:39:47,934 INFO L130 PetriNetUnfolder]: For 411/424 co-relation queries the response was YES. [2021-03-24 13:39:47,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 536 events. 203/536 cut-off events. For 411/424 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3438 event pairs, 49 based on Foata normal form. 1/507 useless extension candidates. Maximal degree in co-relation 1214. Up to 131 conditions per place. [2021-03-24 13:39:47,938 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 23 selfloop transitions, 9 changer transitions 0/46 dead transitions. [2021-03-24 13:39:47,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 256 flow [2021-03-24 13:39:47,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:47,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:47,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:39:47,940 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:39:47,940 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:39:47,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:39:47,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:47,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:39:47,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,943 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,943 INFO L185 Difference]: Start difference. First operand has 43 places, 26 transitions, 105 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:39:47,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 256 flow [2021-03-24 13:39:47,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 13:39:47,947 INFO L241 Difference]: Finished difference. Result has 55 places, 32 transitions, 178 flow [2021-03-24 13:39:47,947 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=178, PETRI_PLACES=55, PETRI_TRANSITIONS=32} [2021-03-24 13:39:47,947 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2021-03-24 13:39:47,947 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 32 transitions, 178 flow [2021-03-24 13:39:47,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:47,947 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:47,948 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:47,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 13:39:47,950 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:47,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:47,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1945596050, now seen corresponding path program 3 times [2021-03-24 13:39:47,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:47,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393793080] [2021-03-24 13:39:47,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:48,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:48,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:48,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:48,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:48,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:48,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:48,023 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:39:48,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:39:48,043 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:39:48,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:39:48,063 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:39:48,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:39:48,091 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:48,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:48,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:48,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393793080] [2021-03-24 13:39:48,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:48,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:48,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363569788] [2021-03-24 13:39:48,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:48,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:48,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:48,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:48,112 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:48,112 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 32 transitions, 178 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:48,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:48,113 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:48,113 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:48,237 INFO L129 PetriNetUnfolder]: 225/740 cut-off events. [2021-03-24 13:39:48,237 INFO L130 PetriNetUnfolder]: For 1512/1550 co-relation queries the response was YES. [2021-03-24 13:39:48,239 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2112 conditions, 740 events. 225/740 cut-off events. For 1512/1550 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5956 event pairs, 52 based on Foata normal form. 1/702 useless extension candidates. Maximal degree in co-relation 2090. Up to 179 conditions per place. [2021-03-24 13:39:48,241 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 38 selfloop transitions, 15 changer transitions 0/67 dead transitions. [2021-03-24 13:39:48,241 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 67 transitions, 536 flow [2021-03-24 13:39:48,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:48,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:48,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:39:48,242 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:39:48,242 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:39:48,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:39:48,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:48,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:39:48,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:48,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:48,244 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:48,244 INFO L185 Difference]: Start difference. First operand has 55 places, 32 transitions, 178 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:39:48,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 67 transitions, 536 flow [2021-03-24 13:39:48,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 67 transitions, 518 flow, removed 4 selfloop flow, removed 1 redundant places. [2021-03-24 13:39:48,248 INFO L241 Difference]: Finished difference. Result has 67 places, 44 transitions, 343 flow [2021-03-24 13:39:48,248 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=343, PETRI_PLACES=67, PETRI_TRANSITIONS=44} [2021-03-24 13:39:48,248 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 29 predicate places. [2021-03-24 13:39:48,248 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 44 transitions, 343 flow [2021-03-24 13:39:48,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:48,248 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:48,248 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:48,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 13:39:48,248 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:48,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:48,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1450839060, now seen corresponding path program 4 times [2021-03-24 13:39:48,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:48,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769589654] [2021-03-24 13:39:48,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:48,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:48,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:48,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:48,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:48,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:48,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:48,276 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:39:48,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:39:48,291 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:39:48,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:39:48,310 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:39:48,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:39:48,343 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:48,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:48,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:48,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769589654] [2021-03-24 13:39:48,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:48,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:48,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509305441] [2021-03-24 13:39:48,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:48,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:48,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:48,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:48,369 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:48,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 44 transitions, 343 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:48,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:48,370 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:48,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:48,511 INFO L129 PetriNetUnfolder]: 273/1086 cut-off events. [2021-03-24 13:39:48,511 INFO L130 PetriNetUnfolder]: For 3716/3756 co-relation queries the response was YES. [2021-03-24 13:39:48,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3421 conditions, 1086 events. 273/1086 cut-off events. For 3716/3756 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 10360 event pairs, 58 based on Foata normal form. 1/1036 useless extension candidates. Maximal degree in co-relation 3393. Up to 249 conditions per place. [2021-03-24 13:39:48,518 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 48 selfloop transitions, 23 changer transitions 0/85 dead transitions. [2021-03-24 13:39:48,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 85 transitions, 890 flow [2021-03-24 13:39:48,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:48,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:48,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:39:48,519 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:39:48,519 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:39:48,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:39:48,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:48,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:39:48,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:48,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:48,521 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:48,521 INFO L185 Difference]: Start difference. First operand has 67 places, 44 transitions, 343 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:39:48,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 85 transitions, 890 flow [2021-03-24 13:39:48,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 85 transitions, 878 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-24 13:39:48,528 INFO L241 Difference]: Finished difference. Result has 79 places, 62 transitions, 649 flow [2021-03-24 13:39:48,528 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=649, PETRI_PLACES=79, PETRI_TRANSITIONS=62} [2021-03-24 13:39:48,529 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 41 predicate places. [2021-03-24 13:39:48,529 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 62 transitions, 649 flow [2021-03-24 13:39:48,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:48,529 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:48,529 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:48,529 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 13:39:48,529 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:48,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:48,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1462267974, now seen corresponding path program 5 times [2021-03-24 13:39:48,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:48,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148170525] [2021-03-24 13:39:48,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:48,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:48,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:48,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:48,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:48,597 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:39:48,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:39:48,606 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:39:48,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:39:48,619 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:39:48,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:39:48,646 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:39:48,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:39:48,672 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:48,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:48,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:48,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148170525] [2021-03-24 13:39:48,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:48,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:48,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106745240] [2021-03-24 13:39:48,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:48,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:48,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:48,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:48,699 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:48,699 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 62 transitions, 649 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:48,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:48,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:48,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:48,876 INFO L129 PetriNetUnfolder]: 303/1228 cut-off events. [2021-03-24 13:39:48,876 INFO L130 PetriNetUnfolder]: For 6322/6386 co-relation queries the response was YES. [2021-03-24 13:39:48,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4403 conditions, 1228 events. 303/1228 cut-off events. For 6322/6386 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 12113 event pairs, 63 based on Foata normal form. 1/1172 useless extension candidates. Maximal degree in co-relation 4369. Up to 280 conditions per place. [2021-03-24 13:39:48,884 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 43 selfloop transitions, 33 changer transitions 0/90 dead transitions. [2021-03-24 13:39:48,884 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 1114 flow [2021-03-24 13:39:48,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:48,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:48,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:39:48,886 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:39:48,886 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:39:48,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:39:48,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:48,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:39:48,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:48,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:48,888 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:48,888 INFO L185 Difference]: Start difference. First operand has 79 places, 62 transitions, 649 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:39:48,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 1114 flow [2021-03-24 13:39:48,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 90 transitions, 1092 flow, removed 6 selfloop flow, removed 1 redundant places. [2021-03-24 13:39:48,900 INFO L241 Difference]: Finished difference. Result has 91 places, 75 transitions, 932 flow [2021-03-24 13:39:48,900 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=932, PETRI_PLACES=91, PETRI_TRANSITIONS=75} [2021-03-24 13:39:48,900 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 53 predicate places. [2021-03-24 13:39:48,900 INFO L480 AbstractCegarLoop]: Abstraction has has 91 places, 75 transitions, 932 flow [2021-03-24 13:39:48,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:48,900 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:48,901 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:48,901 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 13:39:48,901 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:48,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:48,901 INFO L82 PathProgramCache]: Analyzing trace with hash 135383418, now seen corresponding path program 6 times [2021-03-24 13:39:48,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:48,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018457213] [2021-03-24 13:39:48,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:48,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:48,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:48,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:48,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:48,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:48,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:48,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:48,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:39:48,937 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:39:48,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:39:48,967 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:39:48,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:39:48,986 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:48,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:49,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:49,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018457213] [2021-03-24 13:39:49,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:49,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:49,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029123199] [2021-03-24 13:39:49,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:49,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:49,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:49,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:49,005 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:49,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 75 transitions, 932 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:49,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:49,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:49,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:49,187 INFO L129 PetriNetUnfolder]: 280/1316 cut-off events. [2021-03-24 13:39:49,187 INFO L130 PetriNetUnfolder]: For 10146/10202 co-relation queries the response was YES. [2021-03-24 13:39:49,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5429 conditions, 1316 events. 280/1316 cut-off events. For 10146/10202 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 13775 event pairs, 85 based on Foata normal form. 2/1261 useless extension candidates. Maximal degree in co-relation 5389. Up to 273 conditions per place. [2021-03-24 13:39:49,197 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 57 selfloop transitions, 35 changer transitions 1/107 dead transitions. [2021-03-24 13:39:49,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 107 transitions, 1541 flow [2021-03-24 13:39:49,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:49,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:49,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:39:49,198 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:39:49,198 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:39:49,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:39:49,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:49,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:39:49,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:49,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:49,200 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:49,200 INFO L185 Difference]: Start difference. First operand has 91 places, 75 transitions, 932 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:39:49,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 107 transitions, 1541 flow [2021-03-24 13:39:49,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 107 transitions, 1452 flow, removed 30 selfloop flow, removed 1 redundant places. [2021-03-24 13:39:49,218 INFO L241 Difference]: Finished difference. Result has 103 places, 83 transitions, 1102 flow [2021-03-24 13:39:49,219 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1102, PETRI_PLACES=103, PETRI_TRANSITIONS=83} [2021-03-24 13:39:49,219 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 65 predicate places. [2021-03-24 13:39:49,219 INFO L480 AbstractCegarLoop]: Abstraction has has 103 places, 83 transitions, 1102 flow [2021-03-24 13:39:49,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:49,219 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:49,219 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:49,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 13:39:49,219 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:49,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:49,220 INFO L82 PathProgramCache]: Analyzing trace with hash -109852654, now seen corresponding path program 7 times [2021-03-24 13:39:49,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:49,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817637827] [2021-03-24 13:39:49,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:49,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:49,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:49,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:49,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:49,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:49,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:49,261 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:39:49,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:39:49,281 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:39:49,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:39:49,297 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:39:49,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:39:49,317 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:49,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:49,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:49,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817637827] [2021-03-24 13:39:49,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:49,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:49,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470272388] [2021-03-24 13:39:49,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:49,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:49,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:49,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:49,339 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:49,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 83 transitions, 1102 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:49,339 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:49,339 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:49,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:49,532 INFO L129 PetriNetUnfolder]: 271/1471 cut-off events. [2021-03-24 13:39:49,532 INFO L130 PetriNetUnfolder]: For 14290/14409 co-relation queries the response was YES. [2021-03-24 13:39:49,538 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6519 conditions, 1471 events. 271/1471 cut-off events. For 14290/14409 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 16409 event pairs, 99 based on Foata normal form. 4/1397 useless extension candidates. Maximal degree in co-relation 6473. Up to 286 conditions per place. [2021-03-24 13:39:49,544 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 71 selfloop transitions, 41 changer transitions 0/126 dead transitions. [2021-03-24 13:39:49,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 126 transitions, 1942 flow [2021-03-24 13:39:49,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:49,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:49,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:39:49,546 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:39:49,546 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:39:49,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:39:49,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:49,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:39:49,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:49,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:49,548 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:49,548 INFO L185 Difference]: Start difference. First operand has 103 places, 83 transitions, 1102 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:39:49,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 126 transitions, 1942 flow [2021-03-24 13:39:49,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 126 transitions, 1876 flow, removed 23 selfloop flow, removed 2 redundant places. [2021-03-24 13:39:49,571 INFO L241 Difference]: Finished difference. Result has 113 places, 98 transitions, 1454 flow [2021-03-24 13:39:49,571 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1454, PETRI_PLACES=113, PETRI_TRANSITIONS=98} [2021-03-24 13:39:49,571 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 75 predicate places. [2021-03-24 13:39:49,572 INFO L480 AbstractCegarLoop]: Abstraction has has 113 places, 98 transitions, 1454 flow [2021-03-24 13:39:49,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:49,572 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:49,572 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:49,572 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 13:39:49,572 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:49,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:49,572 INFO L82 PathProgramCache]: Analyzing trace with hash 432502018, now seen corresponding path program 8 times [2021-03-24 13:39:49,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:49,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267776537] [2021-03-24 13:39:49,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:49,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:49,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:49,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:49,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:49,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:49,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:49,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:49,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:39:49,611 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:39:49,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:39:49,625 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:39:49,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:39:49,643 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:49,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:49,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:49,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267776537] [2021-03-24 13:39:49,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:49,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:49,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800181385] [2021-03-24 13:39:49,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:49,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:49,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:49,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:49,661 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:49,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 98 transitions, 1454 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:49,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:49,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:49,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:49,856 INFO L129 PetriNetUnfolder]: 267/1513 cut-off events. [2021-03-24 13:39:49,856 INFO L130 PetriNetUnfolder]: For 17718/17856 co-relation queries the response was YES. [2021-03-24 13:39:49,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7183 conditions, 1513 events. 267/1513 cut-off events. For 17718/17856 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 17045 event pairs, 98 based on Foata normal form. 8/1446 useless extension candidates. Maximal degree in co-relation 7132. Up to 283 conditions per place. [2021-03-24 13:39:49,869 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 77 selfloop transitions, 47 changer transitions 0/138 dead transitions. [2021-03-24 13:39:49,869 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 138 transitions, 2346 flow [2021-03-24 13:39:49,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:49,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:49,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:39:49,870 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:39:49,870 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:39:49,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:39:49,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:49,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:39:49,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:49,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:49,872 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:49,872 INFO L185 Difference]: Start difference. First operand has 113 places, 98 transitions, 1454 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:39:49,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 138 transitions, 2346 flow [2021-03-24 13:39:49,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 138 transitions, 2264 flow, removed 31 selfloop flow, removed 1 redundant places. [2021-03-24 13:39:49,904 INFO L241 Difference]: Finished difference. Result has 125 places, 111 transitions, 1792 flow [2021-03-24 13:39:49,904 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=1384, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1792, PETRI_PLACES=125, PETRI_TRANSITIONS=111} [2021-03-24 13:39:49,904 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 87 predicate places. [2021-03-24 13:39:49,904 INFO L480 AbstractCegarLoop]: Abstraction has has 125 places, 111 transitions, 1792 flow [2021-03-24 13:39:49,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:49,905 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:49,905 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:49,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 13:39:49,905 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:49,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:49,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1732370938, now seen corresponding path program 9 times [2021-03-24 13:39:49,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:49,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653272348] [2021-03-24 13:39:49,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:49,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:49,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:49,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:49,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:49,921 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:39:49,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:39:49,928 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:39:49,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:39:49,938 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:39:49,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:39:49,953 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:39:49,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:39:49,973 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:49,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:49,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:49,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653272348] [2021-03-24 13:39:49,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:49,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:49,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754176792] [2021-03-24 13:39:49,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:49,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:49,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:49,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:49,993 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:49,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 111 transitions, 1792 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:49,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:49,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:49,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:50,200 INFO L129 PetriNetUnfolder]: 282/1594 cut-off events. [2021-03-24 13:39:50,200 INFO L130 PetriNetUnfolder]: For 22109/22303 co-relation queries the response was YES. [2021-03-24 13:39:50,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7970 conditions, 1594 events. 282/1594 cut-off events. For 22109/22303 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 18223 event pairs, 78 based on Foata normal form. 16/1544 useless extension candidates. Maximal degree in co-relation 7913. Up to 294 conditions per place. [2021-03-24 13:39:50,216 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 69 selfloop transitions, 61 changer transitions 1/145 dead transitions. [2021-03-24 13:39:50,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 145 transitions, 2670 flow [2021-03-24 13:39:50,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:50,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:50,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:39:50,218 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:39:50,218 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:39:50,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:39:50,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:50,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:39:50,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:50,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:50,220 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:50,220 INFO L185 Difference]: Start difference. First operand has 125 places, 111 transitions, 1792 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:39:50,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 145 transitions, 2670 flow [2021-03-24 13:39:50,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 145 transitions, 2558 flow, removed 46 selfloop flow, removed 1 redundant places. [2021-03-24 13:39:50,259 INFO L241 Difference]: Finished difference. Result has 137 places, 121 transitions, 2142 flow [2021-03-24 13:39:50,259 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=1712, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2142, PETRI_PLACES=137, PETRI_TRANSITIONS=121} [2021-03-24 13:39:50,259 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 99 predicate places. [2021-03-24 13:39:50,259 INFO L480 AbstractCegarLoop]: Abstraction has has 137 places, 121 transitions, 2142 flow [2021-03-24 13:39:50,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:50,260 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:50,260 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:50,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 13:39:50,260 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:50,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:50,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1473148824, now seen corresponding path program 10 times [2021-03-24 13:39:50,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:50,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032529265] [2021-03-24 13:39:50,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:50,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:50,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:50,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:50,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:50,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:50,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:50,283 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:39:50,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:39:50,293 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:39:50,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:39:50,310 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:39:50,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:39:50,329 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:50,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:50,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032529265] [2021-03-24 13:39:50,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:50,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:50,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487190144] [2021-03-24 13:39:50,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:50,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:50,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:50,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:50,347 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:50,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 121 transitions, 2142 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:50,347 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:50,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:50,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:50,559 INFO L129 PetriNetUnfolder]: 279/1628 cut-off events. [2021-03-24 13:39:50,560 INFO L130 PetriNetUnfolder]: For 27703/27951 co-relation queries the response was YES. [2021-03-24 13:39:50,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8817 conditions, 1628 events. 279/1628 cut-off events. For 27703/27951 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 18854 event pairs, 77 based on Foata normal form. 19/1572 useless extension candidates. Maximal degree in co-relation 8754. Up to 283 conditions per place. [2021-03-24 13:39:50,575 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 82 selfloop transitions, 56 changer transitions 0/152 dead transitions. [2021-03-24 13:39:50,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 152 transitions, 3042 flow [2021-03-24 13:39:50,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:50,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:50,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:39:50,576 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:39:50,576 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:39:50,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:39:50,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:50,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:39:50,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:50,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:50,578 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:50,578 INFO L185 Difference]: Start difference. First operand has 137 places, 121 transitions, 2142 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:39:50,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 152 transitions, 3042 flow [2021-03-24 13:39:50,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 152 transitions, 2942 flow, removed 40 selfloop flow, removed 1 redundant places. [2021-03-24 13:39:50,661 INFO L241 Difference]: Finished difference. Result has 148 places, 137 transitions, 2606 flow [2021-03-24 13:39:50,661 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=2060, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2606, PETRI_PLACES=148, PETRI_TRANSITIONS=137} [2021-03-24 13:39:50,661 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 110 predicate places. [2021-03-24 13:39:50,661 INFO L480 AbstractCegarLoop]: Abstraction has has 148 places, 137 transitions, 2606 flow [2021-03-24 13:39:50,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:50,661 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:50,661 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:50,661 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 13:39:50,662 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:50,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:50,662 INFO L82 PathProgramCache]: Analyzing trace with hash 384916286, now seen corresponding path program 11 times [2021-03-24 13:39:50,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:50,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176125682] [2021-03-24 13:39:50,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:50,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:50,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:50,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:50,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:50,677 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:39:50,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:39:50,684 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:39:50,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:39:50,694 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:39:50,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:39:50,707 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:39:50,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:39:50,728 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:50,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:50,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:50,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176125682] [2021-03-24 13:39:50,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:50,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:50,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180301172] [2021-03-24 13:39:50,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:50,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:50,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:50,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:50,747 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:50,747 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 137 transitions, 2606 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:50,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:50,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:50,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:50,951 INFO L129 PetriNetUnfolder]: 279/1646 cut-off events. [2021-03-24 13:39:50,951 INFO L130 PetriNetUnfolder]: For 31131/31379 co-relation queries the response was YES. [2021-03-24 13:39:50,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9233 conditions, 1646 events. 279/1646 cut-off events. For 31131/31379 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 19136 event pairs, 83 based on Foata normal form. 21/1595 useless extension candidates. Maximal degree in co-relation 9165. Up to 294 conditions per place. [2021-03-24 13:39:50,966 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 58 selfloop transitions, 84 changer transitions 1/157 dead transitions. [2021-03-24 13:39:50,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 157 transitions, 3298 flow [2021-03-24 13:39:50,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:50,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:50,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:39:50,967 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:39:50,967 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:39:50,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:39:50,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:50,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:39:50,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:50,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:50,969 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:50,969 INFO L185 Difference]: Start difference. First operand has 148 places, 137 transitions, 2606 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:39:50,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 157 transitions, 3298 flow [2021-03-24 13:39:51,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 157 transitions, 3178 flow, removed 32 selfloop flow, removed 2 redundant places. [2021-03-24 13:39:51,039 INFO L241 Difference]: Finished difference. Result has 158 places, 143 transitions, 2896 flow [2021-03-24 13:39:51,039 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=2488, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2896, PETRI_PLACES=158, PETRI_TRANSITIONS=143} [2021-03-24 13:39:51,039 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 120 predicate places. [2021-03-24 13:39:51,039 INFO L480 AbstractCegarLoop]: Abstraction has has 158 places, 143 transitions, 2896 flow [2021-03-24 13:39:51,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:51,040 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:51,040 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:51,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-24 13:39:51,040 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:51,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:51,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1925717138, now seen corresponding path program 12 times [2021-03-24 13:39:51,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:51,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839626404] [2021-03-24 13:39:51,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:51,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:51,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:51,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:51,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:51,063 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:39:51,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:39:51,070 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:39:51,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:39:51,081 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:39:51,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:39:51,096 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:39:51,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:39:51,114 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:51,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:51,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:51,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839626404] [2021-03-24 13:39:51,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:51,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:51,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074727800] [2021-03-24 13:39:51,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:51,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:51,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:51,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:51,136 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:51,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 143 transitions, 2896 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:51,136 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:51,136 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:51,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:51,355 INFO L129 PetriNetUnfolder]: 279/1645 cut-off events. [2021-03-24 13:39:51,356 INFO L130 PetriNetUnfolder]: For 34910/35158 co-relation queries the response was YES. [2021-03-24 13:39:51,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9642 conditions, 1645 events. 279/1645 cut-off events. For 34910/35158 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 19116 event pairs, 83 based on Foata normal form. 21/1594 useless extension candidates. Maximal degree in co-relation 9569. Up to 294 conditions per place. [2021-03-24 13:39:51,372 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 64 selfloop transitions, 81 changer transitions 1/160 dead transitions. [2021-03-24 13:39:51,372 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 160 transitions, 3552 flow [2021-03-24 13:39:51,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:51,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:51,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:39:51,383 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:39:51,383 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:39:51,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:39:51,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:51,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:39:51,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:51,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:51,386 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:51,386 INFO L185 Difference]: Start difference. First operand has 158 places, 143 transitions, 2896 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:39:51,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 160 transitions, 3552 flow [2021-03-24 13:39:51,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 160 transitions, 3412 flow, removed 29 selfloop flow, removed 2 redundant places. [2021-03-24 13:39:51,462 INFO L241 Difference]: Finished difference. Result has 167 places, 148 transitions, 3078 flow [2021-03-24 13:39:51,462 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=2764, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3078, PETRI_PLACES=167, PETRI_TRANSITIONS=148} [2021-03-24 13:39:51,462 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 129 predicate places. [2021-03-24 13:39:51,462 INFO L480 AbstractCegarLoop]: Abstraction has has 167 places, 148 transitions, 3078 flow [2021-03-24 13:39:51,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:51,462 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:51,462 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:51,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-24 13:39:51,463 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:51,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:51,463 INFO L82 PathProgramCache]: Analyzing trace with hash 881421328, now seen corresponding path program 13 times [2021-03-24 13:39:51,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:51,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45162349] [2021-03-24 13:39:51,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:51,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:51,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:51,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:51,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:51,480 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:39:51,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:39:51,486 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:39:51,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:39:51,495 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:39:51,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:39:51,508 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:39:51,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:39:51,525 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:51,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:51,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:51,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45162349] [2021-03-24 13:39:51,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:51,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:51,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262630552] [2021-03-24 13:39:51,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:51,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:51,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:51,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:51,543 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:51,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 148 transitions, 3078 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:51,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:51,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:51,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:51,768 INFO L129 PetriNetUnfolder]: 279/1644 cut-off events. [2021-03-24 13:39:51,768 INFO L130 PetriNetUnfolder]: For 37646/37894 co-relation queries the response was YES. [2021-03-24 13:39:51,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10002 conditions, 1644 events. 279/1644 cut-off events. For 37646/37894 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 19086 event pairs, 83 based on Foata normal form. 21/1593 useless extension candidates. Maximal degree in co-relation 9925. Up to 294 conditions per place. [2021-03-24 13:39:51,784 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 54 selfloop transitions, 91 changer transitions 1/160 dead transitions. [2021-03-24 13:39:51,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 160 transitions, 3624 flow [2021-03-24 13:39:51,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:51,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:51,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-03-24 13:39:51,785 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2021-03-24 13:39:51,785 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-03-24 13:39:51,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-03-24 13:39:51,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:51,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-03-24 13:39:51,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:51,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:51,787 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:51,787 INFO L185 Difference]: Start difference. First operand has 167 places, 148 transitions, 3078 flow. Second operand 8 states and 466 transitions. [2021-03-24 13:39:51,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 160 transitions, 3624 flow [2021-03-24 13:39:51,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 160 transitions, 3450 flow, removed 19 selfloop flow, removed 3 redundant places. [2021-03-24 13:39:51,893 INFO L241 Difference]: Finished difference. Result has 174 places, 150 transitions, 3162 flow [2021-03-24 13:39:51,894 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=2904, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3162, PETRI_PLACES=174, PETRI_TRANSITIONS=150} [2021-03-24 13:39:51,894 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 136 predicate places. [2021-03-24 13:39:51,894 INFO L480 AbstractCegarLoop]: Abstraction has has 174 places, 150 transitions, 3162 flow [2021-03-24 13:39:51,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:51,894 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:51,894 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:51,894 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-24 13:39:51,894 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:51,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:51,895 INFO L82 PathProgramCache]: Analyzing trace with hash 71391482, now seen corresponding path program 14 times [2021-03-24 13:39:51,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:51,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140044018] [2021-03-24 13:39:51,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:51,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:51,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:51,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:51,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:51,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:51,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:51,915 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:39:51,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:39:51,925 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:39:51,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:39:51,938 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:39:51,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:39:51,956 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:51,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:51,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:51,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140044018] [2021-03-24 13:39:51,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:51,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:51,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750397105] [2021-03-24 13:39:51,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:51,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:51,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:51,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:51,973 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:51,974 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 150 transitions, 3162 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:51,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:51,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:51,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:52,254 INFO L129 PetriNetUnfolder]: 277/1954 cut-off events. [2021-03-24 13:39:52,254 INFO L130 PetriNetUnfolder]: For 52802/53050 co-relation queries the response was YES. [2021-03-24 13:39:52,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12910 conditions, 1954 events. 277/1954 cut-off events. For 52802/53050 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 24026 event pairs, 42 based on Foata normal form. 2/1865 useless extension candidates. Maximal degree in co-relation 12830. Up to 474 conditions per place. [2021-03-24 13:39:52,270 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 180 selfloop transitions, 90 changer transitions 0/284 dead transitions. [2021-03-24 13:39:52,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 284 transitions, 7005 flow [2021-03-24 13:39:52,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:52,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:39:52,272 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:39:52,272 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:39:52,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:39:52,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:52,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:39:52,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:52,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:52,273 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:52,273 INFO L185 Difference]: Start difference. First operand has 174 places, 150 transitions, 3162 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:39:52,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 284 transitions, 7005 flow [2021-03-24 13:39:52,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 284 transitions, 6640 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-03-24 13:39:52,395 INFO L241 Difference]: Finished difference. Result has 183 places, 213 transitions, 4970 flow [2021-03-24 13:39:52,395 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=2984, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4970, PETRI_PLACES=183, PETRI_TRANSITIONS=213} [2021-03-24 13:39:52,395 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 145 predicate places. [2021-03-24 13:39:52,395 INFO L480 AbstractCegarLoop]: Abstraction has has 183 places, 213 transitions, 4970 flow [2021-03-24 13:39:52,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:52,396 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:52,396 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:52,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-24 13:39:52,396 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:52,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:52,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1996286544, now seen corresponding path program 15 times [2021-03-24 13:39:52,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:52,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974551583] [2021-03-24 13:39:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:52,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:52,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:52,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:52,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:52,420 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:39:52,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:39:52,428 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:39:52,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:39:52,440 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:39:52,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:39:52,454 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:39:52,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:39:52,476 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:52,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:52,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:52,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974551583] [2021-03-24 13:39:52,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:52,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:52,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423573369] [2021-03-24 13:39:52,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:52,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:52,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:52,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:52,496 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:52,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 213 transitions, 4970 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:52,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:52,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:52,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:52,835 INFO L129 PetriNetUnfolder]: 303/2122 cut-off events. [2021-03-24 13:39:52,835 INFO L130 PetriNetUnfolder]: For 51998/52317 co-relation queries the response was YES. [2021-03-24 13:39:52,848 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13018 conditions, 2122 events. 303/2122 cut-off events. For 51998/52317 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 26692 event pairs, 113 based on Foata normal form. 19/2058 useless extension candidates. Maximal degree in co-relation 12932. Up to 365 conditions per place. [2021-03-24 13:39:52,854 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 64 selfloop transitions, 147 changer transitions 1/226 dead transitions. [2021-03-24 13:39:52,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 226 transitions, 5690 flow [2021-03-24 13:39:52,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:52,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:52,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:39:52,855 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:39:52,855 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:39:52,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:39:52,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:52,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:39:52,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:52,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:52,857 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:52,857 INFO L185 Difference]: Start difference. First operand has 183 places, 213 transitions, 4970 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:39:52,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 226 transitions, 5690 flow [2021-03-24 13:39:53,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 226 transitions, 5660 flow, removed 5 selfloop flow, removed 1 redundant places. [2021-03-24 13:39:53,024 INFO L241 Difference]: Finished difference. Result has 192 places, 216 transitions, 5331 flow [2021-03-24 13:39:53,024 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=4946, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5331, PETRI_PLACES=192, PETRI_TRANSITIONS=216} [2021-03-24 13:39:53,024 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 154 predicate places. [2021-03-24 13:39:53,024 INFO L480 AbstractCegarLoop]: Abstraction has has 192 places, 216 transitions, 5331 flow [2021-03-24 13:39:53,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:53,024 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:53,025 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:53,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-24 13:39:53,025 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:53,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:53,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1618551422, now seen corresponding path program 16 times [2021-03-24 13:39:53,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:53,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655521412] [2021-03-24 13:39:53,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:53,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:53,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:53,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:53,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:53,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:53,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:53,065 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:39:53,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:39:53,075 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:39:53,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:39:53,088 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:39:53,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:39:53,107 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:53,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:53,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:53,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655521412] [2021-03-24 13:39:53,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:53,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:53,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76059910] [2021-03-24 13:39:53,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:53,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:53,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:53,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:53,126 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:53,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 216 transitions, 5331 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:53,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:53,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:53,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:53,494 INFO L129 PetriNetUnfolder]: 279/2263 cut-off events. [2021-03-24 13:39:53,494 INFO L130 PetriNetUnfolder]: For 63183/63502 co-relation queries the response was YES. [2021-03-24 13:39:53,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14820 conditions, 2263 events. 279/2263 cut-off events. For 63183/63502 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 29390 event pairs, 81 based on Foata normal form. 12/2181 useless extension candidates. Maximal degree in co-relation 14731. Up to 421 conditions per place. [2021-03-24 13:39:53,515 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 186 selfloop transitions, 102 changer transitions 0/302 dead transitions. [2021-03-24 13:39:53,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 302 transitions, 8153 flow [2021-03-24 13:39:53,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:53,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:53,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:39:53,516 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:39:53,516 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:39:53,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:39:53,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:53,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:39:53,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:53,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:53,517 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:53,517 INFO L185 Difference]: Start difference. First operand has 192 places, 216 transitions, 5331 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:39:53,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 302 transitions, 8153 flow [2021-03-24 13:39:53,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 302 transitions, 7766 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-03-24 13:39:53,686 INFO L241 Difference]: Finished difference. Result has 201 places, 255 transitions, 6508 flow [2021-03-24 13:39:53,686 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=5044, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6508, PETRI_PLACES=201, PETRI_TRANSITIONS=255} [2021-03-24 13:39:53,686 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 163 predicate places. [2021-03-24 13:39:53,687 INFO L480 AbstractCegarLoop]: Abstraction has has 201 places, 255 transitions, 6508 flow [2021-03-24 13:39:53,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:53,687 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:53,687 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:53,687 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-24 13:39:53,687 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:53,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:53,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1642344288, now seen corresponding path program 17 times [2021-03-24 13:39:53,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:53,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865261078] [2021-03-24 13:39:53,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:53,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:53,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:53,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:53,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:53,702 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:39:53,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:39:53,709 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:39:53,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:39:53,723 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:39:53,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:39:53,747 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:39:53,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:39:53,765 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:53,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:53,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865261078] [2021-03-24 13:39:53,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:53,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:53,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425464644] [2021-03-24 13:39:53,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:53,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:53,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:53,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:53,786 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:53,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 255 transitions, 6508 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:53,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:53,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:53,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:54,202 INFO L129 PetriNetUnfolder]: 267/2345 cut-off events. [2021-03-24 13:39:54,202 INFO L130 PetriNetUnfolder]: For 69756/70184 co-relation queries the response was YES. [2021-03-24 13:39:54,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15608 conditions, 2345 events. 267/2345 cut-off events. For 69756/70184 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 31067 event pairs, 124 based on Foata normal form. 23/2271 useless extension candidates. Maximal degree in co-relation 15513. Up to 365 conditions per place. [2021-03-24 13:39:54,221 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 76 selfloop transitions, 182 changer transitions 1/273 dead transitions. [2021-03-24 13:39:54,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 273 transitions, 7510 flow [2021-03-24 13:39:54,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:54,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:54,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:39:54,222 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:39:54,222 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:39:54,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:39:54,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:54,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:39:54,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:54,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:54,224 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:54,224 INFO L185 Difference]: Start difference. First operand has 201 places, 255 transitions, 6508 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:39:54,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 273 transitions, 7510 flow [2021-03-24 13:39:54,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 273 transitions, 7376 flow, removed 49 selfloop flow, removed 1 redundant places. [2021-03-24 13:39:54,447 INFO L241 Difference]: Finished difference. Result has 211 places, 262 transitions, 7018 flow [2021-03-24 13:39:54,447 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=6374, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7018, PETRI_PLACES=211, PETRI_TRANSITIONS=262} [2021-03-24 13:39:54,447 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 173 predicate places. [2021-03-24 13:39:54,447 INFO L480 AbstractCegarLoop]: Abstraction has has 211 places, 262 transitions, 7018 flow [2021-03-24 13:39:54,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:54,447 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:54,448 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:54,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-24 13:39:54,448 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:54,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:54,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1618713732, now seen corresponding path program 18 times [2021-03-24 13:39:54,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:54,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189940619] [2021-03-24 13:39:54,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:54,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:54,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:54,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:54,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:54,461 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:39:54,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:39:54,467 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:39:54,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:39:54,476 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:39:54,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:39:54,489 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:39:54,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:39:54,506 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:54,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:54,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189940619] [2021-03-24 13:39:54,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:54,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:54,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399954240] [2021-03-24 13:39:54,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:54,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:54,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:54,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:54,526 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:54,526 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 262 transitions, 7018 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:54,526 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:54,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:54,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:54,940 INFO L129 PetriNetUnfolder]: 264/2334 cut-off events. [2021-03-24 13:39:54,940 INFO L130 PetriNetUnfolder]: For 76510/77024 co-relation queries the response was YES. [2021-03-24 13:39:54,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16116 conditions, 2334 events. 264/2334 cut-off events. For 76510/77024 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 30903 event pairs, 114 based on Foata normal form. 24/2253 useless extension candidates. Maximal degree in co-relation 16017. Up to 379 conditions per place. [2021-03-24 13:39:54,960 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 122 selfloop transitions, 161 changer transitions 1/298 dead transitions. [2021-03-24 13:39:54,960 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 298 transitions, 8590 flow [2021-03-24 13:39:54,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:54,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:54,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:39:54,961 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:39:54,961 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:39:54,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:39:54,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:54,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:39:54,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:54,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:54,962 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:54,962 INFO L185 Difference]: Start difference. First operand has 211 places, 262 transitions, 7018 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:39:54,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 298 transitions, 8590 flow [2021-03-24 13:39:55,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 298 transitions, 8264 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-03-24 13:39:55,233 INFO L241 Difference]: Finished difference. Result has 219 places, 279 transitions, 7718 flow [2021-03-24 13:39:55,234 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=6704, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7718, PETRI_PLACES=219, PETRI_TRANSITIONS=279} [2021-03-24 13:39:55,234 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 181 predicate places. [2021-03-24 13:39:55,234 INFO L480 AbstractCegarLoop]: Abstraction has has 219 places, 279 transitions, 7718 flow [2021-03-24 13:39:55,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:55,234 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:55,234 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:55,234 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-24 13:39:55,234 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:55,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:55,235 INFO L82 PathProgramCache]: Analyzing trace with hash -189128520, now seen corresponding path program 19 times [2021-03-24 13:39:55,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:55,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725612865] [2021-03-24 13:39:55,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:55,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:55,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:55,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:55,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:55,248 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:39:55,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:39:55,254 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:39:55,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:39:55,263 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:39:55,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:39:55,275 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:39:55,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:39:55,300 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:55,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:55,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:55,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725612865] [2021-03-24 13:39:55,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:55,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:55,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758859336] [2021-03-24 13:39:55,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:55,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:55,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:55,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:55,317 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:55,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 279 transitions, 7718 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:55,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:55,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:55,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:55,761 INFO L129 PetriNetUnfolder]: 267/2342 cut-off events. [2021-03-24 13:39:55,761 INFO L130 PetriNetUnfolder]: For 83190/83884 co-relation queries the response was YES. [2021-03-24 13:39:55,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16517 conditions, 2342 events. 267/2342 cut-off events. For 83190/83884 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 31006 event pairs, 124 based on Foata normal form. 31/2276 useless extension candidates. Maximal degree in co-relation 16414. Up to 364 conditions per place. [2021-03-24 13:39:55,783 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 81 selfloop transitions, 193 changer transitions 0/288 dead transitions. [2021-03-24 13:39:55,783 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 288 transitions, 8534 flow [2021-03-24 13:39:55,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:55,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:55,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:39:55,784 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:39:55,784 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:39:55,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:39:55,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:55,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:39:55,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:55,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:55,785 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:55,785 INFO L185 Difference]: Start difference. First operand has 219 places, 279 transitions, 7718 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:39:55,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 288 transitions, 8534 flow [2021-03-24 13:39:56,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 288 transitions, 8260 flow, removed 48 selfloop flow, removed 5 redundant places. [2021-03-24 13:39:56,049 INFO L241 Difference]: Finished difference. Result has 223 places, 282 transitions, 7940 flow [2021-03-24 13:39:56,049 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=7444, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7940, PETRI_PLACES=223, PETRI_TRANSITIONS=282} [2021-03-24 13:39:56,050 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 185 predicate places. [2021-03-24 13:39:56,050 INFO L480 AbstractCegarLoop]: Abstraction has has 223 places, 282 transitions, 7940 flow [2021-03-24 13:39:56,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:56,050 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:56,050 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:56,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-24 13:39:56,050 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:56,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:56,050 INFO L82 PathProgramCache]: Analyzing trace with hash -796340978, now seen corresponding path program 20 times [2021-03-24 13:39:56,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:56,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612278099] [2021-03-24 13:39:56,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:56,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:56,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:56,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:56,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:56,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:56,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:56,076 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:39:56,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:39:56,085 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:39:56,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:39:56,107 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:39:56,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:39:56,124 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:56,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:56,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612278099] [2021-03-24 13:39:56,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:56,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:56,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998342166] [2021-03-24 13:39:56,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:56,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:56,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:56,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:56,142 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:56,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 282 transitions, 7940 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:56,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:56,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:56,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:56,612 INFO L129 PetriNetUnfolder]: 265/2402 cut-off events. [2021-03-24 13:39:56,612 INFO L130 PetriNetUnfolder]: For 89402/90100 co-relation queries the response was YES. [2021-03-24 13:39:56,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17367 conditions, 2402 events. 265/2402 cut-off events. For 89402/90100 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 32102 event pairs, 99 based on Foata normal form. 18/2313 useless extension candidates. Maximal degree in co-relation 17265. Up to 401 conditions per place. [2021-03-24 13:39:56,633 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 197 selfloop transitions, 127 changer transitions 0/338 dead transitions. [2021-03-24 13:39:56,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 338 transitions, 10314 flow [2021-03-24 13:39:56,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:56,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:56,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:39:56,634 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:39:56,634 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:39:56,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:39:56,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:56,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:39:56,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:56,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:56,636 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:56,636 INFO L185 Difference]: Start difference. First operand has 223 places, 282 transitions, 7940 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:39:56,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 338 transitions, 10314 flow [2021-03-24 13:39:56,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 338 transitions, 9845 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-03-24 13:39:56,911 INFO L241 Difference]: Finished difference. Result has 230 places, 311 transitions, 8850 flow [2021-03-24 13:39:56,911 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=7550, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8850, PETRI_PLACES=230, PETRI_TRANSITIONS=311} [2021-03-24 13:39:56,911 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 192 predicate places. [2021-03-24 13:39:56,911 INFO L480 AbstractCegarLoop]: Abstraction has has 230 places, 311 transitions, 8850 flow [2021-03-24 13:39:56,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:56,912 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:56,912 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:56,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-24 13:39:56,912 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:56,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:56,912 INFO L82 PathProgramCache]: Analyzing trace with hash 2068408222, now seen corresponding path program 21 times [2021-03-24 13:39:56,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:56,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066387763] [2021-03-24 13:39:56,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:56,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:56,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:56,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:56,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:56,926 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:39:56,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:39:56,932 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:39:56,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:39:56,942 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:39:56,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:39:56,963 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:39:56,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:39:56,982 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:56,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:56,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:56,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066387763] [2021-03-24 13:39:56,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:56,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:56,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226498630] [2021-03-24 13:39:56,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:56,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:56,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:56,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:56,999 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:56,999 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 311 transitions, 8850 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:56,999 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:57,000 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:57,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:57,494 INFO L129 PetriNetUnfolder]: 253/2479 cut-off events. [2021-03-24 13:39:57,494 INFO L130 PetriNetUnfolder]: For 98927/99652 co-relation queries the response was YES. [2021-03-24 13:39:57,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18207 conditions, 2479 events. 253/2479 cut-off events. For 98927/99652 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 33627 event pairs, 105 based on Foata normal form. 29/2388 useless extension candidates. Maximal degree in co-relation 18101. Up to 376 conditions per place. [2021-03-24 13:39:57,516 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 123 selfloop transitions, 201 changer transitions 0/338 dead transitions. [2021-03-24 13:39:57,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 338 transitions, 10217 flow [2021-03-24 13:39:57,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:57,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:57,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:39:57,518 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:39:57,518 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:39:57,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:39:57,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:57,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:39:57,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:57,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:57,519 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:57,519 INFO L185 Difference]: Start difference. First operand has 230 places, 311 transitions, 8850 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:39:57,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 338 transitions, 10217 flow [2021-03-24 13:39:57,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 338 transitions, 10019 flow, removed 44 selfloop flow, removed 2 redundant places. [2021-03-24 13:39:57,878 INFO L241 Difference]: Finished difference. Result has 239 places, 322 transitions, 9408 flow [2021-03-24 13:39:57,878 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=8660, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9408, PETRI_PLACES=239, PETRI_TRANSITIONS=322} [2021-03-24 13:39:57,878 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 201 predicate places. [2021-03-24 13:39:57,878 INFO L480 AbstractCegarLoop]: Abstraction has has 239 places, 322 transitions, 9408 flow [2021-03-24 13:39:57,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:57,878 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:57,878 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:57,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-24 13:39:57,879 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:57,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:57,879 INFO L82 PathProgramCache]: Analyzing trace with hash 365565104, now seen corresponding path program 22 times [2021-03-24 13:39:57,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:57,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511836676] [2021-03-24 13:39:57,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:57,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:57,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:57,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:57,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:57,894 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:39:57,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:39:57,901 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:39:57,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:39:57,909 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:39:57,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:39:57,937 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:39:57,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:39:57,956 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:57,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:57,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:57,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511836676] [2021-03-24 13:39:57,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:57,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:57,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192569156] [2021-03-24 13:39:57,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:57,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:57,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:57,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:57,975 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:57,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 322 transitions, 9408 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:57,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:57,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:57,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:58,471 INFO L129 PetriNetUnfolder]: 252/2479 cut-off events. [2021-03-24 13:39:58,471 INFO L130 PetriNetUnfolder]: For 105983/106706 co-relation queries the response was YES. [2021-03-24 13:39:58,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18740 conditions, 2479 events. 252/2479 cut-off events. For 105983/106706 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 33672 event pairs, 113 based on Foata normal form. 29/2408 useless extension candidates. Maximal degree in co-relation 18630. Up to 396 conditions per place. [2021-03-24 13:39:58,493 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 138 selfloop transitions, 199 changer transitions 0/351 dead transitions. [2021-03-24 13:39:58,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 351 transitions, 11012 flow [2021-03-24 13:39:58,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:58,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:58,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:39:58,494 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:39:58,494 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:39:58,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:39:58,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:58,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:39:58,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:58,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:58,495 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:58,496 INFO L185 Difference]: Start difference. First operand has 239 places, 322 transitions, 9408 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:39:58,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 351 transitions, 11012 flow [2021-03-24 13:39:58,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 351 transitions, 10807 flow, removed 11 selfloop flow, removed 2 redundant places. [2021-03-24 13:39:58,797 INFO L241 Difference]: Finished difference. Result has 249 places, 330 transitions, 10065 flow [2021-03-24 13:39:58,797 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=9203, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10065, PETRI_PLACES=249, PETRI_TRANSITIONS=330} [2021-03-24 13:39:58,797 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 211 predicate places. [2021-03-24 13:39:58,798 INFO L480 AbstractCegarLoop]: Abstraction has has 249 places, 330 transitions, 10065 flow [2021-03-24 13:39:58,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:58,798 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:58,798 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:58,798 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-24 13:39:58,798 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:58,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:58,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1897951838, now seen corresponding path program 23 times [2021-03-24 13:39:58,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:58,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874139148] [2021-03-24 13:39:58,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:58,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:58,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:58,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:58,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:58,819 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:39:58,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:39:58,829 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:39:58,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:39:58,838 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:39:58,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:39:58,851 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:39:58,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:39:58,872 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:58,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:58,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:58,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874139148] [2021-03-24 13:39:58,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:58,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:58,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417387321] [2021-03-24 13:39:58,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:58,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:58,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:58,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:58,890 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:58,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 330 transitions, 10065 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:58,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:58,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:58,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:59,420 INFO L129 PetriNetUnfolder]: 244/2523 cut-off events. [2021-03-24 13:39:59,420 INFO L130 PetriNetUnfolder]: For 117775/118531 co-relation queries the response was YES. [2021-03-24 13:39:59,438 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19741 conditions, 2523 events. 244/2523 cut-off events. For 117775/118531 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 34538 event pairs, 105 based on Foata normal form. 32/2434 useless extension candidates. Maximal degree in co-relation 19626. Up to 394 conditions per place. [2021-03-24 13:39:59,443 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 146 selfloop transitions, 196 changer transitions 0/356 dead transitions. [2021-03-24 13:39:59,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 356 transitions, 11600 flow [2021-03-24 13:39:59,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:39:59,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:39:59,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:39:59,444 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:39:59,444 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:39:59,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:39:59,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:59,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:39:59,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:59,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:59,445 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:59,445 INFO L185 Difference]: Start difference. First operand has 249 places, 330 transitions, 10065 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:39:59,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 356 transitions, 11600 flow [2021-03-24 13:39:59,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 356 transitions, 11385 flow, removed 16 selfloop flow, removed 2 redundant places. [2021-03-24 13:39:59,814 INFO L241 Difference]: Finished difference. Result has 258 places, 338 transitions, 10576 flow [2021-03-24 13:39:59,814 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=9854, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10576, PETRI_PLACES=258, PETRI_TRANSITIONS=338} [2021-03-24 13:39:59,814 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 220 predicate places. [2021-03-24 13:39:59,814 INFO L480 AbstractCegarLoop]: Abstraction has has 258 places, 338 transitions, 10576 flow [2021-03-24 13:39:59,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:59,815 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:59,815 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:59,815 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-24 13:39:59,815 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:39:59,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:59,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1929461150, now seen corresponding path program 24 times [2021-03-24 13:39:59,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:59,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037873588] [2021-03-24 13:39:59,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:59,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:59,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:39:59,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:59,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:59,829 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:39:59,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:39:59,835 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:39:59,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:39:59,845 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:39:59,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:39:59,868 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:39:59,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:39:59,885 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:39:59,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:39:59,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:59,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037873588] [2021-03-24 13:39:59,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:59,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:59,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755464915] [2021-03-24 13:39:59,902 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:39:59,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:59,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:39:59,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:39:59,902 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:39:59,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 338 transitions, 10576 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:59,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:59,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:39:59,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:00,458 INFO L129 PetriNetUnfolder]: 244/2522 cut-off events. [2021-03-24 13:40:00,458 INFO L130 PetriNetUnfolder]: For 123765/124473 co-relation queries the response was YES. [2021-03-24 13:40:00,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20173 conditions, 2522 events. 244/2522 cut-off events. For 123765/124473 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 34552 event pairs, 105 based on Foata normal form. 32/2434 useless extension candidates. Maximal degree in co-relation 20054. Up to 404 conditions per place. [2021-03-24 13:40:00,486 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 146 selfloop transitions, 205 changer transitions 0/365 dead transitions. [2021-03-24 13:40:00,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 365 transitions, 12206 flow [2021-03-24 13:40:00,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:00,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:00,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:00,488 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:00,488 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:00,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:00,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:00,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:00,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:00,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:00,490 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:00,490 INFO L185 Difference]: Start difference. First operand has 258 places, 338 transitions, 10576 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:00,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 365 transitions, 12206 flow [2021-03-24 13:40:00,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 365 transitions, 11725 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-03-24 13:40:00,905 INFO L241 Difference]: Finished difference. Result has 265 places, 345 transitions, 10837 flow [2021-03-24 13:40:00,906 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=10103, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10837, PETRI_PLACES=265, PETRI_TRANSITIONS=345} [2021-03-24 13:40:00,906 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 227 predicate places. [2021-03-24 13:40:00,906 INFO L480 AbstractCegarLoop]: Abstraction has has 265 places, 345 transitions, 10837 flow [2021-03-24 13:40:00,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:00,906 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:00,906 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:00,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-24 13:40:00,906 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:00,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:00,907 INFO L82 PathProgramCache]: Analyzing trace with hash -2135503386, now seen corresponding path program 25 times [2021-03-24 13:40:00,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:00,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456390255] [2021-03-24 13:40:00,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:00,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:00,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:00,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:00,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:00,931 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:40:00,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:40:00,938 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:40:00,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:40:00,948 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:40:00,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:40:00,962 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:00,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:00,981 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:00,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:00,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:00,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456390255] [2021-03-24 13:40:00,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:00,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:00,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57033686] [2021-03-24 13:40:01,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:01,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:01,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:01,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:01,000 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:01,000 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 345 transitions, 10837 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:01,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:01,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:01,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:01,560 INFO L129 PetriNetUnfolder]: 244/2521 cut-off events. [2021-03-24 13:40:01,560 INFO L130 PetriNetUnfolder]: For 129629/130329 co-relation queries the response was YES. [2021-03-24 13:40:01,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20425 conditions, 2521 events. 244/2521 cut-off events. For 129629/130329 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 34512 event pairs, 105 based on Foata normal form. 32/2433 useless extension candidates. Maximal degree in co-relation 20302. Up to 376 conditions per place. [2021-03-24 13:40:01,582 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 134 selfloop transitions, 213 changer transitions 0/361 dead transitions. [2021-03-24 13:40:01,582 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 361 transitions, 12106 flow [2021-03-24 13:40:01,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:01,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:01,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:01,583 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:01,583 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:01,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:01,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:01,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:01,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:01,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:01,585 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:01,585 INFO L185 Difference]: Start difference. First operand has 265 places, 345 transitions, 10837 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:01,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 361 transitions, 12106 flow [2021-03-24 13:40:02,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 361 transitions, 11887 flow, removed 18 selfloop flow, removed 2 redundant places. [2021-03-24 13:40:02,029 INFO L241 Difference]: Finished difference. Result has 274 places, 354 transitions, 11446 flow [2021-03-24 13:40:02,029 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=10618, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11446, PETRI_PLACES=274, PETRI_TRANSITIONS=354} [2021-03-24 13:40:02,030 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 236 predicate places. [2021-03-24 13:40:02,030 INFO L480 AbstractCegarLoop]: Abstraction has has 274 places, 354 transitions, 11446 flow [2021-03-24 13:40:02,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:02,030 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:02,030 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:02,030 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-24 13:40:02,030 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:02,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:02,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1513075010, now seen corresponding path program 26 times [2021-03-24 13:40:02,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:02,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901782714] [2021-03-24 13:40:02,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:02,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:02,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:02,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:02,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:02,043 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:40:02,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:40:02,049 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:40:02,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:40:02,063 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:40:02,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:40:02,085 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:40:02,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:40:02,103 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:02,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:02,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:02,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901782714] [2021-03-24 13:40:02,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:02,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:02,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473383178] [2021-03-24 13:40:02,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:02,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:02,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:02,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:02,121 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:02,121 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 354 transitions, 11446 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:02,121 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:02,121 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:02,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:02,645 INFO L129 PetriNetUnfolder]: 244/2520 cut-off events. [2021-03-24 13:40:02,645 INFO L130 PetriNetUnfolder]: For 137470/138170 co-relation queries the response was YES. [2021-03-24 13:40:02,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20913 conditions, 2520 events. 244/2520 cut-off events. For 137470/138170 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 34502 event pairs, 105 based on Foata normal form. 32/2443 useless extension candidates. Maximal degree in co-relation 20786. Up to 376 conditions per place. [2021-03-24 13:40:02,673 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 131 selfloop transitions, 216 changer transitions 0/361 dead transitions. [2021-03-24 13:40:02,673 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 361 transitions, 12438 flow [2021-03-24 13:40:02,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:02,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:02,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:02,683 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:02,684 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:02,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:02,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:02,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:02,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:02,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:02,685 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:02,685 INFO L185 Difference]: Start difference. First operand has 274 places, 354 transitions, 11446 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:02,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 361 transitions, 12438 flow [2021-03-24 13:40:03,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 361 transitions, 12087 flow, removed 9 selfloop flow, removed 3 redundant places. [2021-03-24 13:40:03,260 INFO L241 Difference]: Finished difference. Result has 280 places, 357 transitions, 11663 flow [2021-03-24 13:40:03,260 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=11095, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11663, PETRI_PLACES=280, PETRI_TRANSITIONS=357} [2021-03-24 13:40:03,260 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 242 predicate places. [2021-03-24 13:40:03,260 INFO L480 AbstractCegarLoop]: Abstraction has has 280 places, 357 transitions, 11663 flow [2021-03-24 13:40:03,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:03,260 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:03,260 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:03,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-24 13:40:03,260 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:03,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:03,261 INFO L82 PathProgramCache]: Analyzing trace with hash -819346082, now seen corresponding path program 27 times [2021-03-24 13:40:03,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:03,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713594291] [2021-03-24 13:40:03,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:03,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:03,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:03,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:03,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:03,275 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:40:03,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:40:03,281 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:40:03,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:40:03,290 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:40:03,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:40:03,303 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:03,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:03,320 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:03,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:03,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:03,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713594291] [2021-03-24 13:40:03,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:03,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:03,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886383024] [2021-03-24 13:40:03,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:03,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:03,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:03,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:03,339 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:03,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 357 transitions, 11663 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:03,339 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:03,339 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:03,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:03,897 INFO L129 PetriNetUnfolder]: 244/2519 cut-off events. [2021-03-24 13:40:03,898 INFO L130 PetriNetUnfolder]: For 143449/144139 co-relation queries the response was YES. [2021-03-24 13:40:03,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21245 conditions, 2519 events. 244/2519 cut-off events. For 143449/144139 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 34459 event pairs, 105 based on Foata normal form. 32/2442 useless extension candidates. Maximal degree in co-relation 21116. Up to 376 conditions per place. [2021-03-24 13:40:03,926 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 137 selfloop transitions, 213 changer transitions 0/364 dead transitions. [2021-03-24 13:40:03,927 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 364 transitions, 12665 flow [2021-03-24 13:40:03,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:03,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:03,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:03,928 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:03,928 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:03,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:03,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:03,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:03,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:03,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:03,929 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:03,929 INFO L185 Difference]: Start difference. First operand has 280 places, 357 transitions, 11663 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:03,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 364 transitions, 12665 flow [2021-03-24 13:40:04,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 364 transitions, 12260 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-03-24 13:40:04,649 INFO L241 Difference]: Finished difference. Result has 285 places, 360 transitions, 11813 flow [2021-03-24 13:40:04,649 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=11258, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11813, PETRI_PLACES=285, PETRI_TRANSITIONS=360} [2021-03-24 13:40:04,649 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 247 predicate places. [2021-03-24 13:40:04,649 INFO L480 AbstractCegarLoop]: Abstraction has has 285 places, 360 transitions, 11813 flow [2021-03-24 13:40:04,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:04,649 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:04,649 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:04,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-24 13:40:04,649 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:04,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:04,650 INFO L82 PathProgramCache]: Analyzing trace with hash 583939516, now seen corresponding path program 28 times [2021-03-24 13:40:04,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:04,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883493778] [2021-03-24 13:40:04,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:04,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:04,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:04,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:04,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:04,663 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:40:04,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:40:04,670 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:40:04,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:40:04,684 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:40:04,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:40:04,698 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:04,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:04,717 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:04,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:04,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883493778] [2021-03-24 13:40:04,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:04,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:04,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629574618] [2021-03-24 13:40:04,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:04,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:04,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:04,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:04,737 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:04,737 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 360 transitions, 11813 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:04,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:04,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:04,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:05,285 INFO L129 PetriNetUnfolder]: 244/2518 cut-off events. [2021-03-24 13:40:05,285 INFO L130 PetriNetUnfolder]: For 149482/150168 co-relation queries the response was YES. [2021-03-24 13:40:05,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21489 conditions, 2518 events. 244/2518 cut-off events. For 149482/150168 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 34434 event pairs, 105 based on Foata normal form. 30/2439 useless extension candidates. Maximal degree in co-relation 21358. Up to 376 conditions per place. [2021-03-24 13:40:05,313 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 131 selfloop transitions, 219 changer transitions 0/364 dead transitions. [2021-03-24 13:40:05,313 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 364 transitions, 12729 flow [2021-03-24 13:40:05,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:05,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:05,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:05,314 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:05,314 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:05,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:05,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:05,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:05,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:05,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:05,315 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:05,315 INFO L185 Difference]: Start difference. First operand has 285 places, 360 transitions, 11813 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:05,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 364 transitions, 12729 flow [2021-03-24 13:40:05,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 364 transitions, 12335 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-03-24 13:40:05,821 INFO L241 Difference]: Finished difference. Result has 289 places, 360 transitions, 11860 flow [2021-03-24 13:40:05,821 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=11419, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11860, PETRI_PLACES=289, PETRI_TRANSITIONS=360} [2021-03-24 13:40:05,822 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 251 predicate places. [2021-03-24 13:40:05,822 INFO L480 AbstractCegarLoop]: Abstraction has has 289 places, 360 transitions, 11860 flow [2021-03-24 13:40:05,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:05,822 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:05,822 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:05,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-24 13:40:05,822 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:05,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:05,822 INFO L82 PathProgramCache]: Analyzing trace with hash -410719532, now seen corresponding path program 29 times [2021-03-24 13:40:05,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:05,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246733139] [2021-03-24 13:40:05,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:05,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:05,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:05,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:05,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:05,835 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:40:05,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:40:05,841 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:40:05,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:40:05,850 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:40:05,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:40:05,872 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:40:05,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:40:05,891 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:05,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:05,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:05,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246733139] [2021-03-24 13:40:05,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:05,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:05,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440309328] [2021-03-24 13:40:05,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:05,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:05,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:05,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:05,909 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:05,909 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 360 transitions, 11860 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:05,909 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:05,909 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:05,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:06,523 INFO L129 PetriNetUnfolder]: 244/2517 cut-off events. [2021-03-24 13:40:06,524 INFO L130 PetriNetUnfolder]: For 155333/156019 co-relation queries the response was YES. [2021-03-24 13:40:06,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21726 conditions, 2517 events. 244/2517 cut-off events. For 155333/156019 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 34466 event pairs, 105 based on Foata normal form. 30/2438 useless extension candidates. Maximal degree in co-relation 21594. Up to 404 conditions per place. [2021-03-24 13:40:06,556 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 153 selfloop transitions, 209 changer transitions 0/376 dead transitions. [2021-03-24 13:40:06,556 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 376 transitions, 13182 flow [2021-03-24 13:40:06,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:06,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:06,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:06,557 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:06,557 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:06,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:06,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:06,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:06,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:06,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:06,559 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:06,559 INFO L185 Difference]: Start difference. First operand has 289 places, 360 transitions, 11860 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:06,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 376 transitions, 13182 flow [2021-03-24 13:40:07,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 376 transitions, 12771 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-24 13:40:07,134 INFO L241 Difference]: Finished difference. Result has 293 places, 360 transitions, 11870 flow [2021-03-24 13:40:07,134 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=11449, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11870, PETRI_PLACES=293, PETRI_TRANSITIONS=360} [2021-03-24 13:40:07,134 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 255 predicate places. [2021-03-24 13:40:07,135 INFO L480 AbstractCegarLoop]: Abstraction has has 293 places, 360 transitions, 11870 flow [2021-03-24 13:40:07,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:07,135 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:07,135 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:07,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-24 13:40:07,135 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:07,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:07,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1868542390, now seen corresponding path program 30 times [2021-03-24 13:40:07,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:07,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809386520] [2021-03-24 13:40:07,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:07,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:07,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:07,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:07,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:07,150 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:40:07,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:40:07,156 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:40:07,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:40:07,165 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:40:07,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:40:07,176 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:07,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:07,206 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:07,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:07,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:07,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809386520] [2021-03-24 13:40:07,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:07,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:07,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330092353] [2021-03-24 13:40:07,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:07,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:07,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:07,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:07,225 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:07,225 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 360 transitions, 11870 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:07,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:07,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:07,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:07,775 INFO L129 PetriNetUnfolder]: 244/2516 cut-off events. [2021-03-24 13:40:07,775 INFO L130 PetriNetUnfolder]: For 161370/162060 co-relation queries the response was YES. [2021-03-24 13:40:07,797 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21938 conditions, 2516 events. 244/2516 cut-off events. For 161370/162060 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 34438 event pairs, 105 based on Foata normal form. 32/2439 useless extension candidates. Maximal degree in co-relation 21805. Up to 404 conditions per place. [2021-03-24 13:40:07,802 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 154 selfloop transitions, 211 changer transitions 0/379 dead transitions. [2021-03-24 13:40:07,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 379 transitions, 13298 flow [2021-03-24 13:40:07,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:07,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:07,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:07,803 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:07,803 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:07,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:07,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:07,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:07,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:07,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:07,805 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:07,805 INFO L185 Difference]: Start difference. First operand has 293 places, 360 transitions, 11870 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:07,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 379 transitions, 13298 flow [2021-03-24 13:40:08,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 379 transitions, 12675 flow, removed 11 selfloop flow, removed 10 redundant places. [2021-03-24 13:40:08,383 INFO L241 Difference]: Finished difference. Result has 292 places, 363 transitions, 11795 flow [2021-03-24 13:40:08,384 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=11247, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11795, PETRI_PLACES=292, PETRI_TRANSITIONS=363} [2021-03-24 13:40:08,384 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 254 predicate places. [2021-03-24 13:40:08,384 INFO L480 AbstractCegarLoop]: Abstraction has has 292 places, 363 transitions, 11795 flow [2021-03-24 13:40:08,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:08,384 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:08,384 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:08,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-24 13:40:08,384 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:08,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:08,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1516166888, now seen corresponding path program 31 times [2021-03-24 13:40:08,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:08,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708128302] [2021-03-24 13:40:08,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:08,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:08,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:08,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:08,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:08,400 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:40:08,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:40:08,406 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:40:08,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:40:08,416 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:40:08,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:40:08,428 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:40:08,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:40:08,443 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:08,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:08,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:08,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708128302] [2021-03-24 13:40:08,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:08,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:08,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691078063] [2021-03-24 13:40:08,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:08,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:08,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:08,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:08,465 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:08,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 363 transitions, 11795 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:08,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:08,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:08,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:09,001 INFO L129 PetriNetUnfolder]: 244/2515 cut-off events. [2021-03-24 13:40:09,002 INFO L130 PetriNetUnfolder]: For 166123/166813 co-relation queries the response was YES. [2021-03-24 13:40:09,024 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22037 conditions, 2515 events. 244/2515 cut-off events. For 166123/166813 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 34377 event pairs, 105 based on Foata normal form. 32/2438 useless extension candidates. Maximal degree in co-relation 21907. Up to 404 conditions per place. [2021-03-24 13:40:09,029 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 146 selfloop transitions, 219 changer transitions 0/379 dead transitions. [2021-03-24 13:40:09,029 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 379 transitions, 13145 flow [2021-03-24 13:40:09,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:09,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:09,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:09,030 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:09,030 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:09,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:09,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:09,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:09,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:09,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:09,031 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:09,031 INFO L185 Difference]: Start difference. First operand has 292 places, 363 transitions, 11795 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:09,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 379 transitions, 13145 flow [2021-03-24 13:40:09,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 379 transitions, 12756 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 13:40:09,875 INFO L241 Difference]: Finished difference. Result has 297 places, 375 transitions, 12316 flow [2021-03-24 13:40:09,875 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=11406, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12316, PETRI_PLACES=297, PETRI_TRANSITIONS=375} [2021-03-24 13:40:09,875 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 259 predicate places. [2021-03-24 13:40:09,875 INFO L480 AbstractCegarLoop]: Abstraction has has 297 places, 375 transitions, 12316 flow [2021-03-24 13:40:09,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:09,875 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:09,875 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:09,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-24 13:40:09,876 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:09,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:09,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1792424652, now seen corresponding path program 32 times [2021-03-24 13:40:09,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:09,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204372263] [2021-03-24 13:40:09,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:09,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:09,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:09,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:09,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:09,897 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:40:09,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:40:09,904 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:40:09,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:40:09,916 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:40:09,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:40:09,929 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:09,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:09,947 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:09,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:09,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:09,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204372263] [2021-03-24 13:40:09,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:09,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:09,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68437107] [2021-03-24 13:40:09,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:09,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:09,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:09,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:09,976 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:09,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 375 transitions, 12316 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:09,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:09,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:09,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:10,536 INFO L129 PetriNetUnfolder]: 244/2514 cut-off events. [2021-03-24 13:40:10,537 INFO L130 PetriNetUnfolder]: For 173746/174436 co-relation queries the response was YES. [2021-03-24 13:40:10,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22310 conditions, 2514 events. 244/2514 cut-off events. For 173746/174436 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 34394 event pairs, 105 based on Foata normal form. 32/2438 useless extension candidates. Maximal degree in co-relation 22178. Up to 404 conditions per place. [2021-03-24 13:40:10,564 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 148 selfloop transitions, 217 changer transitions 0/379 dead transitions. [2021-03-24 13:40:10,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 379 transitions, 13294 flow [2021-03-24 13:40:10,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:10,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:10,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:10,565 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:10,565 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:10,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:10,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:10,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:10,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:10,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:10,567 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:10,567 INFO L185 Difference]: Start difference. First operand has 297 places, 375 transitions, 12316 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:10,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 379 transitions, 13294 flow [2021-03-24 13:40:11,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 379 transitions, 12962 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 13:40:11,145 INFO L241 Difference]: Finished difference. Result has 302 places, 375 transitions, 12421 flow [2021-03-24 13:40:11,145 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=11984, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12421, PETRI_PLACES=302, PETRI_TRANSITIONS=375} [2021-03-24 13:40:11,146 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 264 predicate places. [2021-03-24 13:40:11,146 INFO L480 AbstractCegarLoop]: Abstraction has has 302 places, 375 transitions, 12421 flow [2021-03-24 13:40:11,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:11,146 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:11,146 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:11,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-24 13:40:11,146 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:11,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:11,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1111898804, now seen corresponding path program 33 times [2021-03-24 13:40:11,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:11,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332996203] [2021-03-24 13:40:11,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:11,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:11,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:11,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:11,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:11,159 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:40:11,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:40:11,165 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:40:11,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:40:11,175 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:40:11,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:40:11,188 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:11,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:11,211 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:11,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:11,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:11,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332996203] [2021-03-24 13:40:11,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:11,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:11,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381530029] [2021-03-24 13:40:11,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:11,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:11,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:11,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:11,231 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:11,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 375 transitions, 12421 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:11,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:11,232 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:11,232 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:11,784 INFO L129 PetriNetUnfolder]: 244/2513 cut-off events. [2021-03-24 13:40:11,784 INFO L130 PetriNetUnfolder]: For 180415/181101 co-relation queries the response was YES. [2021-03-24 13:40:11,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22616 conditions, 2513 events. 244/2513 cut-off events. For 180415/181101 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 34386 event pairs, 105 based on Foata normal form. 30/2434 useless extension candidates. Maximal degree in co-relation 22483. Up to 394 conditions per place. [2021-03-24 13:40:11,811 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 159 selfloop transitions, 212 changer transitions 0/385 dead transitions. [2021-03-24 13:40:11,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 385 transitions, 13639 flow [2021-03-24 13:40:11,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:11,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:11,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:11,812 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:11,812 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:11,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:11,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:11,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:11,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:11,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:11,814 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:11,814 INFO L185 Difference]: Start difference. First operand has 302 places, 375 transitions, 12421 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:11,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 385 transitions, 13639 flow [2021-03-24 13:40:12,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 385 transitions, 13226 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-24 13:40:12,478 INFO L241 Difference]: Finished difference. Result has 307 places, 378 transitions, 12604 flow [2021-03-24 13:40:12,478 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=12020, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12604, PETRI_PLACES=307, PETRI_TRANSITIONS=378} [2021-03-24 13:40:12,479 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 269 predicate places. [2021-03-24 13:40:12,479 INFO L480 AbstractCegarLoop]: Abstraction has has 307 places, 378 transitions, 12604 flow [2021-03-24 13:40:12,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:12,479 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:12,479 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:12,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-24 13:40:12,479 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:12,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:12,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1093985606, now seen corresponding path program 34 times [2021-03-24 13:40:12,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:12,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918518225] [2021-03-24 13:40:12,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:12,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:12,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:12,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:12,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:12,491 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:40:12,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:40:12,497 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:40:12,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:40:12,507 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:40:12,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:40:12,519 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:12,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:12,540 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:12,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:12,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:12,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918518225] [2021-03-24 13:40:12,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:12,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:12,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914970456] [2021-03-24 13:40:12,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:12,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:12,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:12,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:12,559 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:12,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 378 transitions, 12604 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:12,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:12,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:12,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:13,128 INFO L129 PetriNetUnfolder]: 244/2512 cut-off events. [2021-03-24 13:40:13,128 INFO L130 PetriNetUnfolder]: For 187485/188179 co-relation queries the response was YES. [2021-03-24 13:40:13,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22854 conditions, 2512 events. 244/2512 cut-off events. For 187485/188179 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 34356 event pairs, 105 based on Foata normal form. 30/2433 useless extension candidates. Maximal degree in co-relation 22719. Up to 394 conditions per place. [2021-03-24 13:40:13,157 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 165 selfloop transitions, 206 changer transitions 0/385 dead transitions. [2021-03-24 13:40:13,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 385 transitions, 13700 flow [2021-03-24 13:40:13,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:13,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:13,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:13,158 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:13,158 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:13,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:13,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:13,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:13,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:13,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:13,159 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:13,159 INFO L185 Difference]: Start difference. First operand has 307 places, 378 transitions, 12604 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:13,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 385 transitions, 13700 flow [2021-03-24 13:40:13,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 385 transitions, 13451 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-03-24 13:40:13,711 INFO L241 Difference]: Finished difference. Result has 313 places, 381 transitions, 12918 flow [2021-03-24 13:40:13,711 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=12355, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12918, PETRI_PLACES=313, PETRI_TRANSITIONS=381} [2021-03-24 13:40:13,711 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 275 predicate places. [2021-03-24 13:40:13,711 INFO L480 AbstractCegarLoop]: Abstraction has has 313 places, 381 transitions, 12918 flow [2021-03-24 13:40:13,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:13,711 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:13,711 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:13,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-24 13:40:13,712 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:13,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:13,712 INFO L82 PathProgramCache]: Analyzing trace with hash 768911008, now seen corresponding path program 35 times [2021-03-24 13:40:13,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:13,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749679572] [2021-03-24 13:40:13,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:13,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:13,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:13,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:13,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:13,726 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:40:13,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:40:13,733 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:40:13,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:40:13,742 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:40:13,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:40:13,759 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:13,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:13,778 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:13,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:13,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749679572] [2021-03-24 13:40:13,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:13,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:13,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461470836] [2021-03-24 13:40:13,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:13,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:13,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:13,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:13,797 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:13,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 381 transitions, 12918 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:13,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:13,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:13,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:14,407 INFO L129 PetriNetUnfolder]: 244/2511 cut-off events. [2021-03-24 13:40:14,407 INFO L130 PetriNetUnfolder]: For 196472/197186 co-relation queries the response was YES. [2021-03-24 13:40:14,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23235 conditions, 2511 events. 244/2511 cut-off events. For 196472/197186 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 34323 event pairs, 105 based on Foata normal form. 32/2434 useless extension candidates. Maximal degree in co-relation 23098. Up to 394 conditions per place. [2021-03-24 13:40:14,437 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 167 selfloop transitions, 204 changer transitions 0/385 dead transitions. [2021-03-24 13:40:14,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 385 transitions, 13932 flow [2021-03-24 13:40:14,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:14,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:14,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:14,438 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:14,438 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:14,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:14,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:14,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:14,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:14,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:14,440 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:14,440 INFO L185 Difference]: Start difference. First operand has 313 places, 381 transitions, 12918 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:14,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 385 transitions, 13932 flow [2021-03-24 13:40:15,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 385 transitions, 13439 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 13:40:15,267 INFO L241 Difference]: Finished difference. Result has 315 places, 381 transitions, 12836 flow [2021-03-24 13:40:15,267 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=12425, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12836, PETRI_PLACES=315, PETRI_TRANSITIONS=381} [2021-03-24 13:40:15,267 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 277 predicate places. [2021-03-24 13:40:15,267 INFO L480 AbstractCegarLoop]: Abstraction has has 315 places, 381 transitions, 12836 flow [2021-03-24 13:40:15,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:15,268 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:15,268 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:15,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-24 13:40:15,268 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:15,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:15,268 INFO L82 PathProgramCache]: Analyzing trace with hash -854709530, now seen corresponding path program 36 times [2021-03-24 13:40:15,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:15,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097086842] [2021-03-24 13:40:15,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:15,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:15,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:15,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:15,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:15,280 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:40:15,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:40:15,287 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:40:15,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:40:15,296 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:40:15,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:40:15,309 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:15,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:15,327 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:15,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:15,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:15,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097086842] [2021-03-24 13:40:15,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:15,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:15,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349645082] [2021-03-24 13:40:15,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:15,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:15,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:15,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:15,345 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:15,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 381 transitions, 12836 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:15,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:15,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:15,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:15,934 INFO L129 PetriNetUnfolder]: 244/2510 cut-off events. [2021-03-24 13:40:15,934 INFO L130 PetriNetUnfolder]: For 202432/203138 co-relation queries the response was YES. [2021-03-24 13:40:15,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23415 conditions, 2510 events. 244/2510 cut-off events. For 202432/203138 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 34334 event pairs, 105 based on Foata normal form. 32/2433 useless extension candidates. Maximal degree in co-relation 23279. Up to 394 conditions per place. [2021-03-24 13:40:15,965 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 138 selfloop transitions, 180 changer transitions 53/385 dead transitions. [2021-03-24 13:40:15,965 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 385 transitions, 13858 flow [2021-03-24 13:40:15,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:15,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:15,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:15,966 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:15,966 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:15,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:15,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:15,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:15,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:15,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:15,967 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:15,967 INFO L185 Difference]: Start difference. First operand has 315 places, 381 transitions, 12836 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:15,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 385 transitions, 13858 flow [2021-03-24 13:40:16,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 385 transitions, 13477 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-24 13:40:16,907 INFO L241 Difference]: Finished difference. Result has 319 places, 328 transitions, 10537 flow [2021-03-24 13:40:16,907 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=12455, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10537, PETRI_PLACES=319, PETRI_TRANSITIONS=328} [2021-03-24 13:40:16,907 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 281 predicate places. [2021-03-24 13:40:16,907 INFO L480 AbstractCegarLoop]: Abstraction has has 319 places, 328 transitions, 10537 flow [2021-03-24 13:40:16,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:16,908 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:16,908 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:16,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-24 13:40:16,908 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:16,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:16,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1024334096, now seen corresponding path program 37 times [2021-03-24 13:40:16,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:16,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573024092] [2021-03-24 13:40:16,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:16,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:16,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:16,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:16,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:16,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:16,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:16,926 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:40:16,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:40:16,940 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:40:16,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:40:16,963 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:16,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:16,980 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:16,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:16,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:16,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573024092] [2021-03-24 13:40:16,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:16,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:16,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120771327] [2021-03-24 13:40:16,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:16,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:16,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:16,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:16,998 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:16,999 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 328 transitions, 10537 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:16,999 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:16,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:16,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:17,534 INFO L129 PetriNetUnfolder]: 244/2515 cut-off events. [2021-03-24 13:40:17,535 INFO L130 PetriNetUnfolder]: For 214551/214987 co-relation queries the response was YES. [2021-03-24 13:40:17,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23338 conditions, 2515 events. 244/2515 cut-off events. For 214551/214987 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 34469 event pairs, 65 based on Foata normal form. 16/2421 useless extension candidates. Maximal degree in co-relation 23201. Up to 396 conditions per place. [2021-03-24 13:40:17,563 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 252 selfloop transitions, 121 changer transitions 1/388 dead transitions. [2021-03-24 13:40:17,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 388 transitions, 13303 flow [2021-03-24 13:40:17,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:17,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:17,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:17,564 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:17,564 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:17,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:17,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:17,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:17,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:17,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:17,565 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:17,565 INFO L185 Difference]: Start difference. First operand has 319 places, 328 transitions, 10537 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:17,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 388 transitions, 13303 flow [2021-03-24 13:40:18,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 388 transitions, 12545 flow, removed 135 selfloop flow, removed 41 redundant places. [2021-03-24 13:40:18,040 INFO L241 Difference]: Finished difference. Result has 266 places, 341 transitions, 10790 flow [2021-03-24 13:40:18,040 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=10042, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10790, PETRI_PLACES=266, PETRI_TRANSITIONS=341} [2021-03-24 13:40:18,040 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 228 predicate places. [2021-03-24 13:40:18,041 INFO L480 AbstractCegarLoop]: Abstraction has has 266 places, 341 transitions, 10790 flow [2021-03-24 13:40:18,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:18,041 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:18,041 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:18,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-24 13:40:18,041 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:18,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:18,041 INFO L82 PathProgramCache]: Analyzing trace with hash -433736442, now seen corresponding path program 38 times [2021-03-24 13:40:18,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:18,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399996972] [2021-03-24 13:40:18,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:18,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:18,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:18,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:18,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:18,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:18,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:18,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:18,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:40:18,068 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:40:18,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:40:18,079 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:18,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:18,094 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:18,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:18,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:18,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399996972] [2021-03-24 13:40:18,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:18,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:18,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223970198] [2021-03-24 13:40:18,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:18,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:18,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:18,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:18,116 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:18,116 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 341 transitions, 10790 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:18,116 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:18,116 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:18,116 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:18,648 INFO L129 PetriNetUnfolder]: 243/2518 cut-off events. [2021-03-24 13:40:18,648 INFO L130 PetriNetUnfolder]: For 83397/83833 co-relation queries the response was YES. [2021-03-24 13:40:18,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17907 conditions, 2518 events. 243/2518 cut-off events. For 83397/83833 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 34443 event pairs, 69 based on Foata normal form. 20/2425 useless extension candidates. Maximal degree in co-relation 17799. Up to 411 conditions per place. [2021-03-24 13:40:18,674 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 196 selfloop transitions, 151 changer transitions 2/363 dead transitions. [2021-03-24 13:40:18,674 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 363 transitions, 12116 flow [2021-03-24 13:40:18,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:18,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:18,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:18,675 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:18,675 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:18,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:18,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:18,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:18,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:18,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:18,677 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:18,677 INFO L185 Difference]: Start difference. First operand has 266 places, 341 transitions, 10790 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:18,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 363 transitions, 12116 flow [2021-03-24 13:40:19,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 363 transitions, 12052 flow, removed 14 selfloop flow, removed 2 redundant places. [2021-03-24 13:40:19,012 INFO L241 Difference]: Finished difference. Result has 274 places, 345 transitions, 11205 flow [2021-03-24 13:40:19,012 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=10734, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11205, PETRI_PLACES=274, PETRI_TRANSITIONS=345} [2021-03-24 13:40:19,012 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 236 predicate places. [2021-03-24 13:40:19,012 INFO L480 AbstractCegarLoop]: Abstraction has has 274 places, 345 transitions, 11205 flow [2021-03-24 13:40:19,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:19,013 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:19,013 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:19,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-24 13:40:19,013 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:19,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:19,013 INFO L82 PathProgramCache]: Analyzing trace with hash 703165622, now seen corresponding path program 39 times [2021-03-24 13:40:19,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:19,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829203567] [2021-03-24 13:40:19,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:19,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:19,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:19,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:19,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:19,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:19,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:19,032 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:40:19,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:40:19,049 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:40:19,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:40:19,067 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:19,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:19,089 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:19,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:19,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829203567] [2021-03-24 13:40:19,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:19,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:19,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156035767] [2021-03-24 13:40:19,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:19,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:19,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:19,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:19,109 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:19,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 345 transitions, 11205 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:19,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:19,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:19,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:19,632 INFO L129 PetriNetUnfolder]: 243/2546 cut-off events. [2021-03-24 13:40:19,632 INFO L130 PetriNetUnfolder]: For 88516/88929 co-relation queries the response was YES. [2021-03-24 13:40:19,651 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18455 conditions, 2546 events. 243/2546 cut-off events. For 88516/88929 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 34914 event pairs, 69 based on Foata normal form. 20/2454 useless extension candidates. Maximal degree in co-relation 18344. Up to 396 conditions per place. [2021-03-24 13:40:19,656 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 223 selfloop transitions, 154 changer transitions 1/392 dead transitions. [2021-03-24 13:40:19,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 392 transitions, 13507 flow [2021-03-24 13:40:19,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:19,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:19,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:19,657 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:19,657 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:19,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:19,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:19,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:19,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:19,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:19,658 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:19,659 INFO L185 Difference]: Start difference. First operand has 274 places, 345 transitions, 11205 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:19,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 392 transitions, 13507 flow [2021-03-24 13:40:19,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 392 transitions, 13323 flow, removed 19 selfloop flow, removed 4 redundant places. [2021-03-24 13:40:20,004 INFO L241 Difference]: Finished difference. Result has 281 places, 362 transitions, 12107 flow [2021-03-24 13:40:20,004 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=11050, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12107, PETRI_PLACES=281, PETRI_TRANSITIONS=362} [2021-03-24 13:40:20,004 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 243 predicate places. [2021-03-24 13:40:20,004 INFO L480 AbstractCegarLoop]: Abstraction has has 281 places, 362 transitions, 12107 flow [2021-03-24 13:40:20,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:20,005 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:20,005 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:20,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-24 13:40:20,005 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:20,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:20,005 INFO L82 PathProgramCache]: Analyzing trace with hash -705201464, now seen corresponding path program 40 times [2021-03-24 13:40:20,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:20,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369458742] [2021-03-24 13:40:20,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:20,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:20,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:20,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:20,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:20,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:20,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:20,029 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:40:20,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:40:20,038 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:40:20,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:40:20,050 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:40:20,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:40:20,066 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:20,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:20,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369458742] [2021-03-24 13:40:20,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:20,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:20,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240494069] [2021-03-24 13:40:20,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:20,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:20,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:20,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:20,084 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:20,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 362 transitions, 12107 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:20,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:20,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:20,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:20,610 INFO L129 PetriNetUnfolder]: 242/2537 cut-off events. [2021-03-24 13:40:20,610 INFO L130 PetriNetUnfolder]: For 93197/93610 co-relation queries the response was YES. [2021-03-24 13:40:20,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18679 conditions, 2537 events. 242/2537 cut-off events. For 93197/93610 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 34799 event pairs, 69 based on Foata normal form. 23/2447 useless extension candidates. Maximal degree in co-relation 18565. Up to 390 conditions per place. [2021-03-24 13:40:20,637 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 189 selfloop transitions, 167 changer transitions 0/370 dead transitions. [2021-03-24 13:40:20,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 370 transitions, 13046 flow [2021-03-24 13:40:20,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:20,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:20,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:20,638 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:20,638 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:20,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:20,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:20,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:20,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:20,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:20,640 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:20,640 INFO L185 Difference]: Start difference. First operand has 281 places, 362 transitions, 12107 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:20,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 370 transitions, 13046 flow [2021-03-24 13:40:21,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 370 transitions, 12754 flow, removed 23 selfloop flow, removed 4 redundant places. [2021-03-24 13:40:21,030 INFO L241 Difference]: Finished difference. Result has 284 places, 362 transitions, 12160 flow [2021-03-24 13:40:21,030 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=11823, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12160, PETRI_PLACES=284, PETRI_TRANSITIONS=362} [2021-03-24 13:40:21,030 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 246 predicate places. [2021-03-24 13:40:21,030 INFO L480 AbstractCegarLoop]: Abstraction has has 284 places, 362 transitions, 12160 flow [2021-03-24 13:40:21,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:21,030 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:21,030 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:21,030 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-24 13:40:21,030 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:21,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:21,031 INFO L82 PathProgramCache]: Analyzing trace with hash 184289042, now seen corresponding path program 41 times [2021-03-24 13:40:21,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:21,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824005641] [2021-03-24 13:40:21,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:21,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:21,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:21,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:21,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:21,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:21,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:21,049 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:40:21,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:40:21,058 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:40:21,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:40:21,071 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:40:21,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:40:21,088 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:21,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:21,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:21,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824005641] [2021-03-24 13:40:21,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:21,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:21,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501059295] [2021-03-24 13:40:21,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:21,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:21,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:21,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:21,106 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:21,106 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 362 transitions, 12160 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:21,106 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:21,106 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:21,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:21,598 INFO L129 PetriNetUnfolder]: 242/2536 cut-off events. [2021-03-24 13:40:21,598 INFO L130 PetriNetUnfolder]: For 91202/91615 co-relation queries the response was YES. [2021-03-24 13:40:21,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18805 conditions, 2536 events. 242/2536 cut-off events. For 91202/91615 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 34785 event pairs, 69 based on Foata normal form. 23/2446 useless extension candidates. Maximal degree in co-relation 18691. Up to 390 conditions per place. [2021-03-24 13:40:21,624 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 191 selfloop transitions, 165 changer transitions 0/370 dead transitions. [2021-03-24 13:40:21,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 370 transitions, 13099 flow [2021-03-24 13:40:21,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:21,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:21,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:21,626 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:21,626 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:21,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:21,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:21,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:21,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:21,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:21,627 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:21,627 INFO L185 Difference]: Start difference. First operand has 284 places, 362 transitions, 12160 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:21,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 370 transitions, 13099 flow [2021-03-24 13:40:22,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 370 transitions, 12774 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-24 13:40:22,022 INFO L241 Difference]: Finished difference. Result has 288 places, 362 transitions, 12168 flow [2021-03-24 13:40:22,022 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=11835, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12168, PETRI_PLACES=288, PETRI_TRANSITIONS=362} [2021-03-24 13:40:22,022 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 250 predicate places. [2021-03-24 13:40:22,022 INFO L480 AbstractCegarLoop]: Abstraction has has 288 places, 362 transitions, 12168 flow [2021-03-24 13:40:22,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:22,023 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:22,023 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:22,023 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-24 13:40:22,023 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:22,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:22,023 INFO L82 PathProgramCache]: Analyzing trace with hash -215487928, now seen corresponding path program 42 times [2021-03-24 13:40:22,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:22,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627900241] [2021-03-24 13:40:22,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:22,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:22,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:22,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:22,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:22,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:22,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:22,042 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:40:22,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:40:22,051 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:40:22,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:40:22,064 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:22,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:22,084 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:22,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:22,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:22,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627900241] [2021-03-24 13:40:22,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:22,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:22,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347629398] [2021-03-24 13:40:22,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:22,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:22,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:22,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:22,101 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:22,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 362 transitions, 12168 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:22,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:22,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:22,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:22,618 INFO L129 PetriNetUnfolder]: 242/2535 cut-off events. [2021-03-24 13:40:22,618 INFO L130 PetriNetUnfolder]: For 94062/94477 co-relation queries the response was YES. [2021-03-24 13:40:22,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19049 conditions, 2535 events. 242/2535 cut-off events. For 94062/94477 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 34796 event pairs, 69 based on Foata normal form. 24/2446 useless extension candidates. Maximal degree in co-relation 18934. Up to 390 conditions per place. [2021-03-24 13:40:22,646 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 190 selfloop transitions, 166 changer transitions 0/370 dead transitions. [2021-03-24 13:40:22,646 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 370 transitions, 13115 flow [2021-03-24 13:40:22,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:22,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:22,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:22,647 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:22,647 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:22,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:22,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:22,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:22,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:22,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:22,648 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:22,648 INFO L185 Difference]: Start difference. First operand has 288 places, 362 transitions, 12168 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:22,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 370 transitions, 13115 flow [2021-03-24 13:40:23,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 370 transitions, 12840 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-03-24 13:40:23,165 INFO L241 Difference]: Finished difference. Result has 294 places, 363 transitions, 12284 flow [2021-03-24 13:40:23,165 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=11893, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12284, PETRI_PLACES=294, PETRI_TRANSITIONS=363} [2021-03-24 13:40:23,165 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 256 predicate places. [2021-03-24 13:40:23,165 INFO L480 AbstractCegarLoop]: Abstraction has has 294 places, 363 transitions, 12284 flow [2021-03-24 13:40:23,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:23,165 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:23,165 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:23,165 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-24 13:40:23,166 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:23,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:23,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1998116454, now seen corresponding path program 43 times [2021-03-24 13:40:23,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:23,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323220452] [2021-03-24 13:40:23,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:23,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:23,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:23,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:23,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:23,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:23,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:23,187 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:40:23,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:40:23,199 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:40:23,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:40:23,211 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:23,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:23,228 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:23,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:23,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:23,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323220452] [2021-03-24 13:40:23,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:23,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:23,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342308994] [2021-03-24 13:40:23,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:23,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:23,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:23,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:23,247 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:23,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 363 transitions, 12284 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:23,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:23,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:23,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:23,780 INFO L129 PetriNetUnfolder]: 242/2534 cut-off events. [2021-03-24 13:40:23,781 INFO L130 PetriNetUnfolder]: For 97356/97771 co-relation queries the response was YES. [2021-03-24 13:40:23,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19342 conditions, 2534 events. 242/2534 cut-off events. For 97356/97771 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 34756 event pairs, 69 based on Foata normal form. 24/2445 useless extension candidates. Maximal degree in co-relation 19225. Up to 390 conditions per place. [2021-03-24 13:40:23,808 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 187 selfloop transitions, 169 changer transitions 0/370 dead transitions. [2021-03-24 13:40:23,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 370 transitions, 13200 flow [2021-03-24 13:40:23,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:23,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:23,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:23,809 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:23,809 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:23,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:23,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:23,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:23,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:23,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:23,810 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:23,810 INFO L185 Difference]: Start difference. First operand has 294 places, 363 transitions, 12284 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:23,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 370 transitions, 13200 flow [2021-03-24 13:40:24,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 370 transitions, 12880 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-03-24 13:40:24,272 INFO L241 Difference]: Finished difference. Result has 299 places, 364 transitions, 12401 flow [2021-03-24 13:40:24,272 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=11964, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12401, PETRI_PLACES=299, PETRI_TRANSITIONS=364} [2021-03-24 13:40:24,272 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 261 predicate places. [2021-03-24 13:40:24,273 INFO L480 AbstractCegarLoop]: Abstraction has has 299 places, 364 transitions, 12401 flow [2021-03-24 13:40:24,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:24,273 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:24,273 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:24,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-24 13:40:24,273 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:24,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:24,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1552148344, now seen corresponding path program 44 times [2021-03-24 13:40:24,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:24,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817555964] [2021-03-24 13:40:24,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:24,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:24,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:24,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:24,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:24,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:24,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:24,293 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:40:24,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:40:24,304 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:40:24,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:40:24,316 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:24,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:24,333 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:24,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:24,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817555964] [2021-03-24 13:40:24,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:24,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:24,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408978379] [2021-03-24 13:40:24,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:24,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:24,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:24,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:24,351 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:24,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 364 transitions, 12401 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:24,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:24,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:24,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:24,882 INFO L129 PetriNetUnfolder]: 242/2533 cut-off events. [2021-03-24 13:40:24,883 INFO L130 PetriNetUnfolder]: For 101965/102454 co-relation queries the response was YES. [2021-03-24 13:40:24,903 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19634 conditions, 2533 events. 242/2533 cut-off events. For 101965/102454 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 34757 event pairs, 69 based on Foata normal form. 27/2448 useless extension candidates. Maximal degree in co-relation 19515. Up to 390 conditions per place. [2021-03-24 13:40:24,908 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 185 selfloop transitions, 163 changer transitions 8/370 dead transitions. [2021-03-24 13:40:24,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 370 transitions, 13289 flow [2021-03-24 13:40:24,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:24,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:24,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:24,909 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:24,909 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:24,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:24,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:24,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:24,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:24,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:24,910 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:24,910 INFO L185 Difference]: Start difference. First operand has 299 places, 364 transitions, 12401 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:24,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 370 transitions, 13289 flow [2021-03-24 13:40:25,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 370 transitions, 13024 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-03-24 13:40:25,374 INFO L241 Difference]: Finished difference. Result has 304 places, 356 transitions, 12087 flow [2021-03-24 13:40:25,374 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=12136, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12087, PETRI_PLACES=304, PETRI_TRANSITIONS=356} [2021-03-24 13:40:25,375 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 266 predicate places. [2021-03-24 13:40:25,375 INFO L480 AbstractCegarLoop]: Abstraction has has 304 places, 356 transitions, 12087 flow [2021-03-24 13:40:25,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:25,375 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:25,375 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:25,375 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-24 13:40:25,375 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:25,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:25,375 INFO L82 PathProgramCache]: Analyzing trace with hash -669860520, now seen corresponding path program 45 times [2021-03-24 13:40:25,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:25,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109439400] [2021-03-24 13:40:25,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:25,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:25,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:25,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:25,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:25,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:25,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:25,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:25,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:40:25,403 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:40:25,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:40:25,424 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:25,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:25,440 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:25,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:25,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:25,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109439400] [2021-03-24 13:40:25,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:25,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:25,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107064816] [2021-03-24 13:40:25,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:25,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:25,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:25,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:25,456 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:25,456 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 356 transitions, 12087 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:25,456 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:25,456 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:25,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:25,978 INFO L129 PetriNetUnfolder]: 241/2495 cut-off events. [2021-03-24 13:40:25,979 INFO L130 PetriNetUnfolder]: For 102976/103352 co-relation queries the response was YES. [2021-03-24 13:40:25,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19502 conditions, 2495 events. 241/2495 cut-off events. For 102976/103352 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 34109 event pairs, 69 based on Foata normal form. 21/2410 useless extension candidates. Maximal degree in co-relation 19382. Up to 406 conditions per place. [2021-03-24 13:40:26,004 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 201 selfloop transitions, 151 changer transitions 2/368 dead transitions. [2021-03-24 13:40:26,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 368 transitions, 13202 flow [2021-03-24 13:40:26,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:26,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:26,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:26,005 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:26,005 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:26,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:26,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:26,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:26,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:26,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:26,006 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:26,006 INFO L185 Difference]: Start difference. First operand has 304 places, 356 transitions, 12087 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:26,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 368 transitions, 13202 flow [2021-03-24 13:40:26,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 368 transitions, 12826 flow, removed 30 selfloop flow, removed 10 redundant places. [2021-03-24 13:40:26,385 INFO L241 Difference]: Finished difference. Result has 298 places, 357 transitions, 12153 flow [2021-03-24 13:40:26,386 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=11766, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12153, PETRI_PLACES=298, PETRI_TRANSITIONS=357} [2021-03-24 13:40:26,386 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 260 predicate places. [2021-03-24 13:40:26,386 INFO L480 AbstractCegarLoop]: Abstraction has has 298 places, 357 transitions, 12153 flow [2021-03-24 13:40:26,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:26,386 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:26,386 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:26,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-24 13:40:26,386 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:26,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:26,387 INFO L82 PathProgramCache]: Analyzing trace with hash 2117147140, now seen corresponding path program 46 times [2021-03-24 13:40:26,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:26,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765405872] [2021-03-24 13:40:26,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:26,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:26,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:26,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:26,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:26,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:26,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:26,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:26,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:40:26,412 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-24 13:40:26,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 13:40:26,433 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:26,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:26,450 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:26,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:26,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:26,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765405872] [2021-03-24 13:40:26,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:26,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:26,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330399031] [2021-03-24 13:40:26,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:26,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:26,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:26,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:26,467 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:26,467 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 357 transitions, 12153 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:26,467 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:26,467 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:26,467 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:27,029 INFO L129 PetriNetUnfolder]: 239/2695 cut-off events. [2021-03-24 13:40:27,029 INFO L130 PetriNetUnfolder]: For 94066/94444 co-relation queries the response was YES. [2021-03-24 13:40:27,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19633 conditions, 2695 events. 239/2695 cut-off events. For 94066/94444 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 37623 event pairs, 57 based on Foata normal form. 15/2599 useless extension candidates. Maximal degree in co-relation 19516. Up to 434 conditions per place. [2021-03-24 13:40:27,058 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 293 selfloop transitions, 127 changer transitions 2/436 dead transitions. [2021-03-24 13:40:27,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 436 transitions, 15764 flow [2021-03-24 13:40:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:27,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:27,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:27,059 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:27,059 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:27,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:27,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:27,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:27,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:27,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:27,060 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:27,060 INFO L185 Difference]: Start difference. First operand has 298 places, 357 transitions, 12153 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:27,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 436 transitions, 15764 flow [2021-03-24 13:40:27,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 436 transitions, 15437 flow, removed 22 selfloop flow, removed 6 redundant places. [2021-03-24 13:40:27,504 INFO L241 Difference]: Finished difference. Result has 303 places, 373 transitions, 12848 flow [2021-03-24 13:40:27,504 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=11886, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12848, PETRI_PLACES=303, PETRI_TRANSITIONS=373} [2021-03-24 13:40:27,504 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 265 predicate places. [2021-03-24 13:40:27,504 INFO L480 AbstractCegarLoop]: Abstraction has has 303 places, 373 transitions, 12848 flow [2021-03-24 13:40:27,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:27,504 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:27,504 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:27,504 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-24 13:40:27,504 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:27,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:27,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1351111734, now seen corresponding path program 47 times [2021-03-24 13:40:27,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:27,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568473830] [2021-03-24 13:40:27,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:27,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:27,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:27,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:27,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:27,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:27,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:27,523 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:40:27,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:40:27,537 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-24 13:40:27,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 13:40:27,564 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:27,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:27,596 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:27,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:27,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:27,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568473830] [2021-03-24 13:40:27,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:27,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:27,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764916859] [2021-03-24 13:40:27,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:27,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:27,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:27,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:27,612 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:27,612 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 373 transitions, 12848 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:27,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:27,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:27,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:28,197 INFO L129 PetriNetUnfolder]: 237/2723 cut-off events. [2021-03-24 13:40:28,198 INFO L130 PetriNetUnfolder]: For 98988/99409 co-relation queries the response was YES. [2021-03-24 13:40:28,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20042 conditions, 2723 events. 237/2723 cut-off events. For 98988/99409 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 38221 event pairs, 69 based on Foata normal form. 22/2637 useless extension candidates. Maximal degree in co-relation 19923. Up to 426 conditions per place. [2021-03-24 13:40:28,224 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 219 selfloop transitions, 166 changer transitions 2/401 dead transitions. [2021-03-24 13:40:28,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 401 transitions, 14590 flow [2021-03-24 13:40:28,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:28,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:28,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:28,225 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:28,225 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:28,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:28,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:28,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:28,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:28,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:28,226 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:28,226 INFO L185 Difference]: Start difference. First operand has 303 places, 373 transitions, 12848 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:28,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 401 transitions, 14590 flow [2021-03-24 13:40:28,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 401 transitions, 14437 flow, removed 20 selfloop flow, removed 4 redundant places. [2021-03-24 13:40:28,684 INFO L241 Difference]: Finished difference. Result has 309 places, 377 transitions, 13274 flow [2021-03-24 13:40:28,685 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=12711, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13274, PETRI_PLACES=309, PETRI_TRANSITIONS=377} [2021-03-24 13:40:28,685 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 271 predicate places. [2021-03-24 13:40:28,685 INFO L480 AbstractCegarLoop]: Abstraction has has 309 places, 377 transitions, 13274 flow [2021-03-24 13:40:28,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:28,685 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:28,685 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:28,685 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-24 13:40:28,685 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:28,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:28,685 INFO L82 PathProgramCache]: Analyzing trace with hash 977850520, now seen corresponding path program 48 times [2021-03-24 13:40:28,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:28,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804037370] [2021-03-24 13:40:28,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:28,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:28,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:28,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:28,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:28,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:28,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:28,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:28,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:40:28,718 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-24 13:40:28,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 13:40:28,740 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:28,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:28,757 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:28,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:28,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:28,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804037370] [2021-03-24 13:40:28,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:28,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:28,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603847750] [2021-03-24 13:40:28,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:28,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:28,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:28,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:28,774 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:28,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 377 transitions, 13274 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:28,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:28,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:28,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:29,343 INFO L129 PetriNetUnfolder]: 236/2713 cut-off events. [2021-03-24 13:40:29,343 INFO L130 PetriNetUnfolder]: For 101199/101593 co-relation queries the response was YES. [2021-03-24 13:40:29,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20287 conditions, 2713 events. 236/2713 cut-off events. For 101199/101593 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 38010 event pairs, 69 based on Foata normal form. 22/2621 useless extension candidates. Maximal degree in co-relation 20166. Up to 443 conditions per place. [2021-03-24 13:40:29,370 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 246 selfloop transitions, 157 changer transitions 2/419 dead transitions. [2021-03-24 13:40:29,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 419 transitions, 15589 flow [2021-03-24 13:40:29,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:29,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:29,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:29,371 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:29,371 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:29,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:29,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:29,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:29,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:29,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:29,372 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:29,372 INFO L185 Difference]: Start difference. First operand has 309 places, 377 transitions, 13274 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:29,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 419 transitions, 15589 flow [2021-03-24 13:40:29,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 419 transitions, 15404 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-03-24 13:40:29,826 INFO L241 Difference]: Finished difference. Result has 316 places, 391 transitions, 14134 flow [2021-03-24 13:40:29,826 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=13112, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14134, PETRI_PLACES=316, PETRI_TRANSITIONS=391} [2021-03-24 13:40:29,826 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 278 predicate places. [2021-03-24 13:40:29,826 INFO L480 AbstractCegarLoop]: Abstraction has has 316 places, 391 transitions, 14134 flow [2021-03-24 13:40:29,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:29,826 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:29,827 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:29,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-24 13:40:29,827 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:29,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:29,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1740840540, now seen corresponding path program 49 times [2021-03-24 13:40:29,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:29,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766437548] [2021-03-24 13:40:29,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:29,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:29,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:29,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:29,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:29,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:29,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:29,844 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:40:29,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:40:29,859 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:40:29,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:40:29,877 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:40:29,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:40:29,902 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:29,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:29,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:29,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766437548] [2021-03-24 13:40:29,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:29,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:29,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209564139] [2021-03-24 13:40:29,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:29,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:29,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:29,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:29,920 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:29,920 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 391 transitions, 14134 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:29,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:29,921 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:29,921 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:30,505 INFO L129 PetriNetUnfolder]: 235/2703 cut-off events. [2021-03-24 13:40:30,505 INFO L130 PetriNetUnfolder]: For 107510/107992 co-relation queries the response was YES. [2021-03-24 13:40:30,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20523 conditions, 2703 events. 235/2703 cut-off events. For 107510/107992 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 37856 event pairs, 69 based on Foata normal form. 25/2619 useless extension candidates. Maximal degree in co-relation 20399. Up to 426 conditions per place. [2021-03-24 13:40:30,533 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 218 selfloop transitions, 176 changer transitions 3/411 dead transitions. [2021-03-24 13:40:30,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 411 transitions, 15626 flow [2021-03-24 13:40:30,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:30,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:30,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:30,534 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:30,534 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:30,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:30,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:30,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:30,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:30,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:30,535 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:30,535 INFO L185 Difference]: Start difference. First operand has 316 places, 391 transitions, 14134 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:30,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 411 transitions, 15626 flow [2021-03-24 13:40:31,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 411 transitions, 15430 flow, removed 24 selfloop flow, removed 4 redundant places. [2021-03-24 13:40:31,076 INFO L241 Difference]: Finished difference. Result has 320 places, 390 transitions, 14290 flow [2021-03-24 13:40:31,076 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=13948, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14290, PETRI_PLACES=320, PETRI_TRANSITIONS=390} [2021-03-24 13:40:31,076 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 282 predicate places. [2021-03-24 13:40:31,076 INFO L480 AbstractCegarLoop]: Abstraction has has 320 places, 390 transitions, 14290 flow [2021-03-24 13:40:31,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:31,076 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:31,076 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:31,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-24 13:40:31,077 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:31,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:31,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1986280744, now seen corresponding path program 50 times [2021-03-24 13:40:31,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:31,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090194546] [2021-03-24 13:40:31,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:31,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:31,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:31,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:31,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:31,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:31,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:31,095 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:40:31,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:40:31,110 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-24 13:40:31,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 13:40:31,134 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:31,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:31,154 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:31,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:31,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:31,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090194546] [2021-03-24 13:40:31,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:31,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:31,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829685365] [2021-03-24 13:40:31,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:31,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:31,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:31,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:31,174 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:31,174 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 390 transitions, 14290 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:31,174 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:31,174 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:31,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:31,756 INFO L129 PetriNetUnfolder]: 234/2691 cut-off events. [2021-03-24 13:40:31,756 INFO L130 PetriNetUnfolder]: For 107407/107889 co-relation queries the response was YES. [2021-03-24 13:40:31,779 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20623 conditions, 2691 events. 234/2691 cut-off events. For 107407/107889 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 37673 event pairs, 69 based on Foata normal form. 25/2607 useless extension candidates. Maximal degree in co-relation 20499. Up to 426 conditions per place. [2021-03-24 13:40:31,784 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 222 selfloop transitions, 172 changer transitions 2/410 dead transitions. [2021-03-24 13:40:31,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 410 transitions, 15776 flow [2021-03-24 13:40:31,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:31,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:31,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:31,785 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:31,785 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:31,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:31,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:31,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:31,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:31,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:31,786 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:31,786 INFO L185 Difference]: Start difference. First operand has 320 places, 390 transitions, 14290 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:31,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 410 transitions, 15776 flow [2021-03-24 13:40:32,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 410 transitions, 15433 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 13:40:32,329 INFO L241 Difference]: Finished difference. Result has 323 places, 390 transitions, 14306 flow [2021-03-24 13:40:32,329 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=13955, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14306, PETRI_PLACES=323, PETRI_TRANSITIONS=390} [2021-03-24 13:40:32,330 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 285 predicate places. [2021-03-24 13:40:32,330 INFO L480 AbstractCegarLoop]: Abstraction has has 323 places, 390 transitions, 14306 flow [2021-03-24 13:40:32,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:32,330 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:32,330 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:32,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-24 13:40:32,330 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:32,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:32,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1990232474, now seen corresponding path program 51 times [2021-03-24 13:40:32,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:32,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692245950] [2021-03-24 13:40:32,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:32,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:32,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:32,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:32,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:32,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:32,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:32,355 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:40:32,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:40:32,373 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:40:32,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:40:32,389 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:40:32,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:40:32,408 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:32,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:32,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:32,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692245950] [2021-03-24 13:40:32,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:32,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:32,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594876823] [2021-03-24 13:40:32,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:32,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:32,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:32,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:32,426 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:32,427 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 390 transitions, 14306 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:32,427 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:32,427 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:32,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:33,023 INFO L129 PetriNetUnfolder]: 233/2681 cut-off events. [2021-03-24 13:40:33,023 INFO L130 PetriNetUnfolder]: For 107436/107918 co-relation queries the response was YES. [2021-03-24 13:40:33,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20585 conditions, 2681 events. 233/2681 cut-off events. For 107436/107918 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 37495 event pairs, 69 based on Foata normal form. 25/2597 useless extension candidates. Maximal degree in co-relation 20460. Up to 426 conditions per place. [2021-03-24 13:40:33,052 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 214 selfloop transitions, 180 changer transitions 0/408 dead transitions. [2021-03-24 13:40:33,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 408 transitions, 15720 flow [2021-03-24 13:40:33,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:33,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:33,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:33,053 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:33,053 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:33,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:33,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:33,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:33,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:33,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:33,054 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:33,054 INFO L185 Difference]: Start difference. First operand has 323 places, 390 transitions, 14306 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:33,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 408 transitions, 15720 flow [2021-03-24 13:40:33,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 408 transitions, 15565 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-03-24 13:40:33,591 INFO L241 Difference]: Finished difference. Result has 328 places, 404 transitions, 15145 flow [2021-03-24 13:40:33,592 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=14159, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15145, PETRI_PLACES=328, PETRI_TRANSITIONS=404} [2021-03-24 13:40:33,592 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 290 predicate places. [2021-03-24 13:40:33,592 INFO L480 AbstractCegarLoop]: Abstraction has has 328 places, 404 transitions, 15145 flow [2021-03-24 13:40:33,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:33,592 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:33,592 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:33,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-24 13:40:33,592 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:33,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:33,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1553442510, now seen corresponding path program 52 times [2021-03-24 13:40:33,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:33,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867987069] [2021-03-24 13:40:33,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:33,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:33,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:33,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:33,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:33,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:33,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:33,610 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:40:33,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:40:33,625 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:40:33,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:40:33,638 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:33,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:33,653 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:33,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:33,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:33,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867987069] [2021-03-24 13:40:33,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:33,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:33,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208806941] [2021-03-24 13:40:33,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:33,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:33,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:33,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:33,670 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:33,670 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 404 transitions, 15145 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:33,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:33,670 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:33,670 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:34,292 INFO L129 PetriNetUnfolder]: 233/2680 cut-off events. [2021-03-24 13:40:34,293 INFO L130 PetriNetUnfolder]: For 109825/110305 co-relation queries the response was YES. [2021-03-24 13:40:34,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20861 conditions, 2680 events. 233/2680 cut-off events. For 109825/110305 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 37436 event pairs, 69 based on Foata normal form. 24/2595 useless extension candidates. Maximal degree in co-relation 20735. Up to 426 conditions per place. [2021-03-24 13:40:34,323 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 214 selfloop transitions, 176 changer transitions 4/408 dead transitions. [2021-03-24 13:40:34,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 408 transitions, 16029 flow [2021-03-24 13:40:34,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:34,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:34,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:34,324 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:34,324 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:34,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:34,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:34,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:34,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:34,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:34,325 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:34,325 INFO L185 Difference]: Start difference. First operand has 328 places, 404 transitions, 15145 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:34,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 408 transitions, 16029 flow [2021-03-24 13:40:34,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 408 transitions, 15750 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-24 13:40:34,924 INFO L241 Difference]: Finished difference. Result has 333 places, 400 transitions, 15034 flow [2021-03-24 13:40:34,925 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=14866, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15034, PETRI_PLACES=333, PETRI_TRANSITIONS=400} [2021-03-24 13:40:34,925 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 295 predicate places. [2021-03-24 13:40:34,925 INFO L480 AbstractCegarLoop]: Abstraction has has 333 places, 400 transitions, 15034 flow [2021-03-24 13:40:34,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:34,925 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:34,925 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:34,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-24 13:40:34,925 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:34,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:34,925 INFO L82 PathProgramCache]: Analyzing trace with hash -947050058, now seen corresponding path program 53 times [2021-03-24 13:40:34,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:34,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858012119] [2021-03-24 13:40:34,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:34,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:34,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:34,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:34,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:34,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:34,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:34,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:34,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:40:34,951 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:40:34,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:40:34,962 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:34,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:34,979 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:34,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:34,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:34,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858012119] [2021-03-24 13:40:34,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:34,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:34,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834938262] [2021-03-24 13:40:34,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:34,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:34,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:34,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:34,999 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:34,999 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 400 transitions, 15034 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:34,999 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:34,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:34,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:35,611 INFO L129 PetriNetUnfolder]: 232/2665 cut-off events. [2021-03-24 13:40:35,611 INFO L130 PetriNetUnfolder]: For 112090/112570 co-relation queries the response was YES. [2021-03-24 13:40:35,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21072 conditions, 2665 events. 232/2665 cut-off events. For 112090/112570 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 37199 event pairs, 69 based on Foata normal form. 24/2582 useless extension candidates. Maximal degree in co-relation 20945. Up to 442 conditions per place. [2021-03-24 13:40:35,639 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 228 selfloop transitions, 160 changer transitions 2/404 dead transitions. [2021-03-24 13:40:35,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 404 transitions, 15918 flow [2021-03-24 13:40:35,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:35,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:35,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:35,640 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:35,640 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:35,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:35,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:35,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:35,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:35,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:35,642 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:35,642 INFO L185 Difference]: Start difference. First operand has 333 places, 400 transitions, 15034 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:35,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 404 transitions, 15918 flow [2021-03-24 13:40:36,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 404 transitions, 15500 flow, removed 13 selfloop flow, removed 7 redundant places. [2021-03-24 13:40:36,188 INFO L241 Difference]: Finished difference. Result has 332 places, 398 transitions, 14865 flow [2021-03-24 13:40:36,188 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=14632, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14865, PETRI_PLACES=332, PETRI_TRANSITIONS=398} [2021-03-24 13:40:36,188 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 294 predicate places. [2021-03-24 13:40:36,188 INFO L480 AbstractCegarLoop]: Abstraction has has 332 places, 398 transitions, 14865 flow [2021-03-24 13:40:36,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:36,189 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:36,189 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:36,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-03-24 13:40:36,189 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:36,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:36,189 INFO L82 PathProgramCache]: Analyzing trace with hash -63561370, now seen corresponding path program 54 times [2021-03-24 13:40:36,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:36,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251605597] [2021-03-24 13:40:36,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:36,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:36,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:36,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:36,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:36,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:36,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:36,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:36,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:40:36,219 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:40:36,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:40:36,242 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:40:36,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:40:36,260 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:36,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:36,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251605597] [2021-03-24 13:40:36,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:36,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:36,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454213433] [2021-03-24 13:40:36,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:36,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:36,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:36,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:36,278 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:36,278 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 398 transitions, 14865 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:36,278 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:36,278 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:36,278 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:36,880 INFO L129 PetriNetUnfolder]: 231/2655 cut-off events. [2021-03-24 13:40:36,881 INFO L130 PetriNetUnfolder]: For 108181/108661 co-relation queries the response was YES. [2021-03-24 13:40:36,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20663 conditions, 2655 events. 231/2655 cut-off events. For 108181/108661 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 37047 event pairs, 69 based on Foata normal form. 24/2572 useless extension candidates. Maximal degree in co-relation 20537. Up to 442 conditions per place. [2021-03-24 13:40:36,910 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 221 selfloop transitions, 165 changer transitions 2/402 dead transitions. [2021-03-24 13:40:36,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 402 transitions, 15737 flow [2021-03-24 13:40:36,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:36,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:36,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:36,911 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:36,911 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:36,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:36,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:36,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:36,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:36,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:36,912 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:36,912 INFO L185 Difference]: Start difference. First operand has 332 places, 398 transitions, 14865 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:36,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 402 transitions, 15737 flow [2021-03-24 13:40:37,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 402 transitions, 15310 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 13:40:37,469 INFO L241 Difference]: Finished difference. Result has 333 places, 396 transitions, 14687 flow [2021-03-24 13:40:37,469 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=14446, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14687, PETRI_PLACES=333, PETRI_TRANSITIONS=396} [2021-03-24 13:40:37,469 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 295 predicate places. [2021-03-24 13:40:37,469 INFO L480 AbstractCegarLoop]: Abstraction has has 333 places, 396 transitions, 14687 flow [2021-03-24 13:40:37,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:37,469 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:37,469 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:37,469 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-03-24 13:40:37,470 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:37,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:37,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1536876484, now seen corresponding path program 55 times [2021-03-24 13:40:37,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:37,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045811201] [2021-03-24 13:40:37,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:37,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:37,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:37,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:37,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:37,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:37,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:37,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:37,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:40:37,495 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:40:37,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:40:37,508 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:40:37,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:40:37,527 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:37,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:37,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:37,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045811201] [2021-03-24 13:40:37,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:37,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:37,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100579378] [2021-03-24 13:40:37,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:37,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:37,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:37,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:37,544 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:37,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 396 transitions, 14687 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:37,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:37,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:37,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:38,119 INFO L129 PetriNetUnfolder]: 230/2645 cut-off events. [2021-03-24 13:40:38,119 INFO L130 PetriNetUnfolder]: For 105799/106281 co-relation queries the response was YES. [2021-03-24 13:40:38,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20569 conditions, 2645 events. 230/2645 cut-off events. For 105799/106281 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 36852 event pairs, 69 based on Foata normal form. 25/2563 useless extension candidates. Maximal degree in co-relation 20443. Up to 442 conditions per place. [2021-03-24 13:40:38,146 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 221 selfloop transitions, 162 changer transitions 3/400 dead transitions. [2021-03-24 13:40:38,146 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 400 transitions, 15555 flow [2021-03-24 13:40:38,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:38,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:38,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:38,150 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:38,150 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:38,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:38,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:38,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:38,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:38,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:38,151 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:38,151 INFO L185 Difference]: Start difference. First operand has 333 places, 396 transitions, 14687 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:38,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 400 transitions, 15555 flow [2021-03-24 13:40:38,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 400 transitions, 15233 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 13:40:38,663 INFO L241 Difference]: Finished difference. Result has 335 places, 393 transitions, 14550 flow [2021-03-24 13:40:38,663 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=14373, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14550, PETRI_PLACES=335, PETRI_TRANSITIONS=393} [2021-03-24 13:40:38,663 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 297 predicate places. [2021-03-24 13:40:38,663 INFO L480 AbstractCegarLoop]: Abstraction has has 335 places, 393 transitions, 14550 flow [2021-03-24 13:40:38,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:38,663 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:38,663 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:38,664 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-03-24 13:40:38,664 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:38,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:38,664 INFO L82 PathProgramCache]: Analyzing trace with hash 632381588, now seen corresponding path program 56 times [2021-03-24 13:40:38,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:38,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123264979] [2021-03-24 13:40:38,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:38,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:38,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:38,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:38,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:38,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:38,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:38,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:38,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:40:38,687 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:40:38,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:40:38,699 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:38,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:38,718 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:38,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:38,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123264979] [2021-03-24 13:40:38,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:38,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:38,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83581046] [2021-03-24 13:40:38,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:38,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:38,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:38,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:38,737 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:38,737 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 393 transitions, 14550 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:38,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:38,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:38,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:39,340 INFO L129 PetriNetUnfolder]: 229/2629 cut-off events. [2021-03-24 13:40:39,340 INFO L130 PetriNetUnfolder]: For 104893/105375 co-relation queries the response was YES. [2021-03-24 13:40:39,363 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20431 conditions, 2629 events. 229/2629 cut-off events. For 104893/105375 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 36543 event pairs, 69 based on Foata normal form. 25/2548 useless extension candidates. Maximal degree in co-relation 20305. Up to 436 conditions per place. [2021-03-24 13:40:39,368 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 248 selfloop transitions, 157 changer transitions 0/419 dead transitions. [2021-03-24 13:40:39,368 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 419 transitions, 16322 flow [2021-03-24 13:40:39,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:39,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:39,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:39,369 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:39,369 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:39,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:39,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:39,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:39,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:39,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:39,370 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:39,370 INFO L185 Difference]: Start difference. First operand has 335 places, 393 transitions, 14550 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:39,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 419 transitions, 16322 flow [2021-03-24 13:40:39,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 419 transitions, 15952 flow, removed 24 selfloop flow, removed 6 redundant places. [2021-03-24 13:40:39,918 INFO L241 Difference]: Finished difference. Result has 337 places, 411 transitions, 15354 flow [2021-03-24 13:40:39,919 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=14212, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15354, PETRI_PLACES=337, PETRI_TRANSITIONS=411} [2021-03-24 13:40:39,919 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 299 predicate places. [2021-03-24 13:40:39,919 INFO L480 AbstractCegarLoop]: Abstraction has has 337 places, 411 transitions, 15354 flow [2021-03-24 13:40:39,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:39,919 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:39,919 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:39,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-03-24 13:40:39,919 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:39,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:39,919 INFO L82 PathProgramCache]: Analyzing trace with hash -440703792, now seen corresponding path program 57 times [2021-03-24 13:40:39,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:39,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216362646] [2021-03-24 13:40:39,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:39,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:39,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:39,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:39,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:39,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:39,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:39,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:39,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:40:39,951 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:40:39,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:40:39,964 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:39,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:39,981 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:39,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:39,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:39,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216362646] [2021-03-24 13:40:39,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:39,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:39,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307273533] [2021-03-24 13:40:39,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:39,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:39,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:39,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:39,998 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:39,999 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 411 transitions, 15354 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:39,999 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:39,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:39,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:40,587 INFO L129 PetriNetUnfolder]: 229/2628 cut-off events. [2021-03-24 13:40:40,588 INFO L130 PetriNetUnfolder]: For 102446/102928 co-relation queries the response was YES. [2021-03-24 13:40:40,613 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20140 conditions, 2628 events. 229/2628 cut-off events. For 102446/102928 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 36577 event pairs, 69 based on Foata normal form. 24/2546 useless extension candidates. Maximal degree in co-relation 20013. Up to 436 conditions per place. [2021-03-24 13:40:40,618 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 252 selfloop transitions, 151 changer transitions 2/419 dead transitions. [2021-03-24 13:40:40,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 419 transitions, 16378 flow [2021-03-24 13:40:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:40,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:40,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:40,619 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:40,619 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:40,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:40,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:40,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:40,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:40,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:40,620 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:40,620 INFO L185 Difference]: Start difference. First operand has 337 places, 411 transitions, 15354 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:40,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 419 transitions, 16378 flow [2021-03-24 13:40:41,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 419 transitions, 16115 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-03-24 13:40:41,125 INFO L241 Difference]: Finished difference. Result has 342 places, 413 transitions, 15472 flow [2021-03-24 13:40:41,125 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=15091, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15472, PETRI_PLACES=342, PETRI_TRANSITIONS=413} [2021-03-24 13:40:41,125 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 304 predicate places. [2021-03-24 13:40:41,126 INFO L480 AbstractCegarLoop]: Abstraction has has 342 places, 413 transitions, 15472 flow [2021-03-24 13:40:41,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:41,126 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:41,126 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:41,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-03-24 13:40:41,126 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:41,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:41,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1547496748, now seen corresponding path program 58 times [2021-03-24 13:40:41,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:41,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949657637] [2021-03-24 13:40:41,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:41,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:41,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:41,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:41,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:41,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:41,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:41,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:41,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:40:41,149 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:40:41,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:40:41,161 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:41,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:41,178 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:41,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:41,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:41,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949657637] [2021-03-24 13:40:41,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:41,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:41,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993468160] [2021-03-24 13:40:41,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:41,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:41,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:41,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:41,194 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:41,194 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 413 transitions, 15472 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:41,194 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:41,194 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:41,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:41,802 INFO L129 PetriNetUnfolder]: 228/2618 cut-off events. [2021-03-24 13:40:41,802 INFO L130 PetriNetUnfolder]: For 106101/106583 co-relation queries the response was YES. [2021-03-24 13:40:41,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20430 conditions, 2618 events. 228/2618 cut-off events. For 106101/106583 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 36318 event pairs, 69 based on Foata normal form. 24/2536 useless extension candidates. Maximal degree in co-relation 20302. Up to 436 conditions per place. [2021-03-24 13:40:41,829 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 248 selfloop transitions, 152 changer transitions 3/417 dead transitions. [2021-03-24 13:40:41,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 417 transitions, 16374 flow [2021-03-24 13:40:41,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:41,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:41,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:41,830 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:41,830 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:41,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:41,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:41,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:41,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:41,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:41,831 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:41,831 INFO L185 Difference]: Start difference. First operand has 342 places, 413 transitions, 15472 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:41,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 417 transitions, 16374 flow [2021-03-24 13:40:42,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 417 transitions, 16121 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-03-24 13:40:42,345 INFO L241 Difference]: Finished difference. Result has 345 places, 410 transitions, 15384 flow [2021-03-24 13:40:42,345 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=15227, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15384, PETRI_PLACES=345, PETRI_TRANSITIONS=410} [2021-03-24 13:40:42,345 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 307 predicate places. [2021-03-24 13:40:42,345 INFO L480 AbstractCegarLoop]: Abstraction has has 345 places, 410 transitions, 15384 flow [2021-03-24 13:40:42,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:42,345 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:42,345 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:42,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-03-24 13:40:42,346 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:42,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:42,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1498620048, now seen corresponding path program 59 times [2021-03-24 13:40:42,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:42,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091350061] [2021-03-24 13:40:42,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:42,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:42,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:42,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:42,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:42,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:42,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:42,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:42,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:40:42,370 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-24 13:40:42,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 13:40:42,392 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:42,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:42,410 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:42,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:42,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:42,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091350061] [2021-03-24 13:40:42,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:42,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:42,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935622913] [2021-03-24 13:40:42,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:42,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:42,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:42,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:42,427 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:42,427 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 410 transitions, 15384 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:42,427 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:42,427 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:42,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:43,025 INFO L129 PetriNetUnfolder]: 227/2602 cut-off events. [2021-03-24 13:40:43,025 INFO L130 PetriNetUnfolder]: For 105303/105787 co-relation queries the response was YES. [2021-03-24 13:40:43,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20361 conditions, 2602 events. 227/2602 cut-off events. For 105303/105787 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 36059 event pairs, 69 based on Foata normal form. 25/2522 useless extension candidates. Maximal degree in co-relation 20233. Up to 436 conditions per place. [2021-03-24 13:40:43,053 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 249 selfloop transitions, 149 changer transitions 2/414 dead transitions. [2021-03-24 13:40:43,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 414 transitions, 16280 flow [2021-03-24 13:40:43,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:43,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:43,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:43,054 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:43,054 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:43,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:43,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:43,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:43,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:43,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:43,056 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:43,056 INFO L185 Difference]: Start difference. First operand has 345 places, 410 transitions, 15384 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:43,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 414 transitions, 16280 flow [2021-03-24 13:40:43,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 414 transitions, 15972 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-03-24 13:40:43,566 INFO L241 Difference]: Finished difference. Result has 345 places, 408 transitions, 15292 flow [2021-03-24 13:40:43,566 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=15092, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15292, PETRI_PLACES=345, PETRI_TRANSITIONS=408} [2021-03-24 13:40:43,566 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 307 predicate places. [2021-03-24 13:40:43,566 INFO L480 AbstractCegarLoop]: Abstraction has has 345 places, 408 transitions, 15292 flow [2021-03-24 13:40:43,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:43,566 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:43,566 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:43,566 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-03-24 13:40:43,566 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:43,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:43,567 INFO L82 PathProgramCache]: Analyzing trace with hash 303998706, now seen corresponding path program 60 times [2021-03-24 13:40:43,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:43,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690748362] [2021-03-24 13:40:43,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:43,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:43,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:43,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:43,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:43,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:43,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:43,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:43,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:40:43,592 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:40:43,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:40:43,603 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:43,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:43,624 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:43,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:43,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:43,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690748362] [2021-03-24 13:40:43,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:43,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:43,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823534549] [2021-03-24 13:40:43,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:43,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:43,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:43,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:43,644 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:43,644 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 408 transitions, 15292 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:43,644 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:43,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:43,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:44,261 INFO L129 PetriNetUnfolder]: 226/2592 cut-off events. [2021-03-24 13:40:44,262 INFO L130 PetriNetUnfolder]: For 102043/102527 co-relation queries the response was YES. [2021-03-24 13:40:44,285 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20046 conditions, 2592 events. 226/2592 cut-off events. For 102043/102527 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 35915 event pairs, 69 based on Foata normal form. 25/2512 useless extension candidates. Maximal degree in co-relation 19919. Up to 436 conditions per place. [2021-03-24 13:40:44,291 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 249 selfloop transitions, 147 changer transitions 2/412 dead transitions. [2021-03-24 13:40:44,291 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 412 transitions, 16176 flow [2021-03-24 13:40:44,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:44,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:44,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:44,292 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:44,292 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:44,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:44,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:44,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:44,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:44,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:44,293 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:44,293 INFO L185 Difference]: Start difference. First operand has 345 places, 408 transitions, 15292 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:44,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 412 transitions, 16176 flow [2021-03-24 13:40:44,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 412 transitions, 15884 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 13:40:44,827 INFO L241 Difference]: Finished difference. Result has 347 places, 406 transitions, 15211 flow [2021-03-24 13:40:44,827 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=15008, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15211, PETRI_PLACES=347, PETRI_TRANSITIONS=406} [2021-03-24 13:40:44,827 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 309 predicate places. [2021-03-24 13:40:44,828 INFO L480 AbstractCegarLoop]: Abstraction has has 347 places, 406 transitions, 15211 flow [2021-03-24 13:40:44,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:44,828 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:44,828 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:44,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-03-24 13:40:44,828 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:44,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:44,828 INFO L82 PathProgramCache]: Analyzing trace with hash -666274416, now seen corresponding path program 61 times [2021-03-24 13:40:44,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:44,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378201082] [2021-03-24 13:40:44,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:44,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:44,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:44,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:44,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:44,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:44,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:44,845 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:40:44,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:40:44,862 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:40:44,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:40:44,886 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:44,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:44,903 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:44,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:44,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:44,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378201082] [2021-03-24 13:40:44,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:44,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:44,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167688784] [2021-03-24 13:40:44,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:44,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:44,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:44,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:44,922 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:44,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 406 transitions, 15211 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:44,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:44,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:44,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:45,556 INFO L129 PetriNetUnfolder]: 232/2720 cut-off events. [2021-03-24 13:40:45,556 INFO L130 PetriNetUnfolder]: For 106306/106788 co-relation queries the response was YES. [2021-03-24 13:40:45,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20862 conditions, 2720 events. 232/2720 cut-off events. For 106306/106788 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 38190 event pairs, 61 based on Foata normal form. 15/2634 useless extension candidates. Maximal degree in co-relation 20735. Up to 424 conditions per place. [2021-03-24 13:40:45,585 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 278 selfloop transitions, 147 changer transitions 2/441 dead transitions. [2021-03-24 13:40:45,585 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 441 transitions, 17383 flow [2021-03-24 13:40:45,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:45,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:45,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:45,586 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:45,586 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:45,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:45,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:45,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:45,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:45,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:45,587 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:45,587 INFO L185 Difference]: Start difference. First operand has 347 places, 406 transitions, 15211 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:45,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 441 transitions, 17383 flow [2021-03-24 13:40:46,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 441 transitions, 17067 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 13:40:46,132 INFO L241 Difference]: Finished difference. Result has 353 places, 415 transitions, 15773 flow [2021-03-24 13:40:46,133 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=14927, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15773, PETRI_PLACES=353, PETRI_TRANSITIONS=415} [2021-03-24 13:40:46,133 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 315 predicate places. [2021-03-24 13:40:46,133 INFO L480 AbstractCegarLoop]: Abstraction has has 353 places, 415 transitions, 15773 flow [2021-03-24 13:40:46,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:46,133 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:46,133 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:46,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-03-24 13:40:46,133 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:46,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:46,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1622614354, now seen corresponding path program 62 times [2021-03-24 13:40:46,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:46,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678783436] [2021-03-24 13:40:46,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:46,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:46,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:46,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:46,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:46,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:46,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:46,150 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:40:46,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:40:46,164 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:40:46,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:40:46,180 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:46,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:46,204 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:46,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:46,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678783436] [2021-03-24 13:40:46,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:46,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:46,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815185981] [2021-03-24 13:40:46,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:46,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:46,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:46,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:46,222 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:46,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 415 transitions, 15773 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:46,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:46,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:46,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:46,860 INFO L129 PetriNetUnfolder]: 231/2713 cut-off events. [2021-03-24 13:40:46,860 INFO L130 PetriNetUnfolder]: For 109957/110445 co-relation queries the response was YES. [2021-03-24 13:40:46,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20983 conditions, 2713 events. 231/2713 cut-off events. For 109957/110445 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 38095 event pairs, 53 based on Foata normal form. 18/2632 useless extension candidates. Maximal degree in co-relation 20852. Up to 435 conditions per place. [2021-03-24 13:40:46,890 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 291 selfloop transitions, 149 changer transitions 2/456 dead transitions. [2021-03-24 13:40:46,891 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 456 transitions, 18110 flow [2021-03-24 13:40:46,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:46,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:46,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:46,891 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:46,891 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:46,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:46,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:46,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:46,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:46,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:46,893 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:46,893 INFO L185 Difference]: Start difference. First operand has 353 places, 415 transitions, 15773 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:46,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 456 transitions, 18110 flow [2021-03-24 13:40:47,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 456 transitions, 17946 flow, removed 17 selfloop flow, removed 4 redundant places. [2021-03-24 13:40:47,520 INFO L241 Difference]: Finished difference. Result has 360 places, 435 transitions, 16841 flow [2021-03-24 13:40:47,520 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=15617, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16841, PETRI_PLACES=360, PETRI_TRANSITIONS=435} [2021-03-24 13:40:47,520 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 322 predicate places. [2021-03-24 13:40:47,520 INFO L480 AbstractCegarLoop]: Abstraction has has 360 places, 435 transitions, 16841 flow [2021-03-24 13:40:47,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:47,520 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:47,520 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:47,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-03-24 13:40:47,520 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:47,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:47,521 INFO L82 PathProgramCache]: Analyzing trace with hash -22554488, now seen corresponding path program 63 times [2021-03-24 13:40:47,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:47,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7761221] [2021-03-24 13:40:47,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:47,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:47,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:47,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:47,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:47,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:47,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:47,541 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:40:47,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:40:47,552 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:40:47,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:40:47,571 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:40:47,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:40:47,588 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:47,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:47,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:47,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7761221] [2021-03-24 13:40:47,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:47,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:47,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619947] [2021-03-24 13:40:47,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:47,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:47,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:47,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:47,614 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:47,615 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 435 transitions, 16841 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:47,615 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:47,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:47,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:48,250 INFO L129 PetriNetUnfolder]: 230/2703 cut-off events. [2021-03-24 13:40:48,250 INFO L130 PetriNetUnfolder]: For 115491/115993 co-relation queries the response was YES. [2021-03-24 13:40:48,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21341 conditions, 2703 events. 230/2703 cut-off events. For 115491/115993 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 37845 event pairs, 53 based on Foata normal form. 18/2615 useless extension candidates. Maximal degree in co-relation 21207. Up to 406 conditions per place. [2021-03-24 13:40:48,281 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 260 selfloop transitions, 170 changer transitions 0/444 dead transitions. [2021-03-24 13:40:48,281 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 444 transitions, 18011 flow [2021-03-24 13:40:48,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:48,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:48,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:48,282 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:48,282 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:48,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:48,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:48,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:48,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:48,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:48,283 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:48,283 INFO L185 Difference]: Start difference. First operand has 360 places, 435 transitions, 16841 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:48,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 444 transitions, 18011 flow [2021-03-24 13:40:48,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 444 transitions, 17822 flow, removed 30 selfloop flow, removed 4 redundant places. [2021-03-24 13:40:48,895 INFO L241 Difference]: Finished difference. Result has 363 places, 435 transitions, 17003 flow [2021-03-24 13:40:48,895 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=16660, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17003, PETRI_PLACES=363, PETRI_TRANSITIONS=435} [2021-03-24 13:40:48,896 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 325 predicate places. [2021-03-24 13:40:48,896 INFO L480 AbstractCegarLoop]: Abstraction has has 363 places, 435 transitions, 17003 flow [2021-03-24 13:40:48,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:48,896 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:48,896 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:48,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-03-24 13:40:48,896 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:48,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:48,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1207805122, now seen corresponding path program 64 times [2021-03-24 13:40:48,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:48,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883091117] [2021-03-24 13:40:48,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:48,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:48,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:48,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:48,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:48,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:48,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:48,917 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:40:48,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:40:48,927 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:40:48,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:40:48,949 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:48,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:48,971 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:48,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:48,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:48,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883091117] [2021-03-24 13:40:48,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:48,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:48,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421550681] [2021-03-24 13:40:48,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:48,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:48,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:48,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:48,989 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:48,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 435 transitions, 17003 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:48,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:48,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:48,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:49,678 INFO L129 PetriNetUnfolder]: 230/2702 cut-off events. [2021-03-24 13:40:49,679 INFO L130 PetriNetUnfolder]: For 115388/115890 co-relation queries the response was YES. [2021-03-24 13:40:49,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21533 conditions, 2702 events. 230/2702 cut-off events. For 115388/115890 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 37824 event pairs, 53 based on Foata normal form. 18/2614 useless extension candidates. Maximal degree in co-relation 21400. Up to 406 conditions per place. [2021-03-24 13:40:49,711 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 260 selfloop transitions, 170 changer transitions 0/444 dead transitions. [2021-03-24 13:40:49,711 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 444 transitions, 18173 flow [2021-03-24 13:40:49,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:49,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:49,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:49,712 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:49,712 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:49,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:49,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:49,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:49,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:49,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:49,713 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:49,714 INFO L185 Difference]: Start difference. First operand has 363 places, 435 transitions, 17003 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:49,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 444 transitions, 18173 flow [2021-03-24 13:40:50,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 444 transitions, 17911 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-03-24 13:40:50,379 INFO L241 Difference]: Finished difference. Result has 368 places, 435 transitions, 17084 flow [2021-03-24 13:40:50,379 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=16741, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17084, PETRI_PLACES=368, PETRI_TRANSITIONS=435} [2021-03-24 13:40:50,379 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 330 predicate places. [2021-03-24 13:40:50,379 INFO L480 AbstractCegarLoop]: Abstraction has has 368 places, 435 transitions, 17084 flow [2021-03-24 13:40:50,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:50,379 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:50,379 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:50,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-03-24 13:40:50,379 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:50,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:50,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1477731600, now seen corresponding path program 65 times [2021-03-24 13:40:50,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:50,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552464507] [2021-03-24 13:40:50,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:50,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:50,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:50,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:50,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:50,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:50,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:50,397 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:40:50,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:40:50,412 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:40:50,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:40:50,431 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:50,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:50,448 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:50,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:50,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:50,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552464507] [2021-03-24 13:40:50,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:50,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:50,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773045260] [2021-03-24 13:40:50,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:50,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:50,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:50,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:50,465 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:50,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 435 transitions, 17084 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:50,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:50,465 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:50,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:51,125 INFO L129 PetriNetUnfolder]: 230/2701 cut-off events. [2021-03-24 13:40:51,125 INFO L130 PetriNetUnfolder]: For 118183/118687 co-relation queries the response was YES. [2021-03-24 13:40:51,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21863 conditions, 2701 events. 230/2701 cut-off events. For 118183/118687 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 37855 event pairs, 53 based on Foata normal form. 19/2613 useless extension candidates. Maximal degree in co-relation 21729. Up to 435 conditions per place. [2021-03-24 13:40:51,155 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 289 selfloop transitions, 149 changer transitions 1/453 dead transitions. [2021-03-24 13:40:51,155 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 453 transitions, 18634 flow [2021-03-24 13:40:51,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:51,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:51,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:51,156 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:51,156 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:51,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:51,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:51,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:51,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:51,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:51,157 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:51,157 INFO L185 Difference]: Start difference. First operand has 368 places, 435 transitions, 17084 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:51,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 453 transitions, 18634 flow [2021-03-24 13:40:51,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 453 transitions, 18296 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-24 13:40:51,806 INFO L241 Difference]: Finished difference. Result has 372 places, 434 transitions, 17018 flow [2021-03-24 13:40:51,807 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=16764, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17018, PETRI_PLACES=372, PETRI_TRANSITIONS=434} [2021-03-24 13:40:51,807 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 334 predicate places. [2021-03-24 13:40:51,807 INFO L480 AbstractCegarLoop]: Abstraction has has 372 places, 434 transitions, 17018 flow [2021-03-24 13:40:51,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:51,807 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:51,807 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:51,807 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-03-24 13:40:51,807 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:51,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:51,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1076348288, now seen corresponding path program 66 times [2021-03-24 13:40:51,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:51,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954909624] [2021-03-24 13:40:51,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:51,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:51,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:51,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:51,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:51,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:51,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:51,824 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:40:51,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:40:51,832 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:40:51,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:40:51,844 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:51,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:51,860 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:51,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:51,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:51,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954909624] [2021-03-24 13:40:51,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:51,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:51,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370516620] [2021-03-24 13:40:51,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:51,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:51,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:51,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:51,881 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:51,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 434 transitions, 17018 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:51,881 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:51,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:51,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:52,577 INFO L129 PetriNetUnfolder]: 229/2692 cut-off events. [2021-03-24 13:40:52,578 INFO L130 PetriNetUnfolder]: For 121099/121597 co-relation queries the response was YES. [2021-03-24 13:40:52,599 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22092 conditions, 2692 events. 229/2692 cut-off events. For 121099/121597 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 37667 event pairs, 53 based on Foata normal form. 19/2604 useless extension candidates. Maximal degree in co-relation 21957. Up to 406 conditions per place. [2021-03-24 13:40:52,604 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 259 selfloop transitions, 170 changer transitions 0/443 dead transitions. [2021-03-24 13:40:52,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 443 transitions, 18202 flow [2021-03-24 13:40:52,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:52,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:52,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:52,605 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:52,605 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:52,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:52,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:52,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:52,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:52,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:52,607 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:52,607 INFO L185 Difference]: Start difference. First operand has 372 places, 434 transitions, 17018 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:52,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 443 transitions, 18202 flow [2021-03-24 13:40:53,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 443 transitions, 18068 flow, removed 24 selfloop flow, removed 3 redundant places. [2021-03-24 13:40:53,203 INFO L241 Difference]: Finished difference. Result has 377 places, 437 transitions, 17454 flow [2021-03-24 13:40:53,204 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=16892, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17454, PETRI_PLACES=377, PETRI_TRANSITIONS=437} [2021-03-24 13:40:53,204 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 339 predicate places. [2021-03-24 13:40:53,204 INFO L480 AbstractCegarLoop]: Abstraction has has 377 places, 437 transitions, 17454 flow [2021-03-24 13:40:53,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:53,204 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:53,204 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:53,204 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-03-24 13:40:53,204 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:53,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:53,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1902461704, now seen corresponding path program 67 times [2021-03-24 13:40:53,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:53,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557295406] [2021-03-24 13:40:53,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:53,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:53,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:53,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:53,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:53,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:53,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:53,220 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:40:53,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:40:53,229 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:40:53,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:40:53,241 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:53,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:53,258 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:53,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:53,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:53,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557295406] [2021-03-24 13:40:53,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:53,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:53,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299173170] [2021-03-24 13:40:53,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:53,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:53,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:53,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:53,275 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:53,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 437 transitions, 17454 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:53,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:53,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:53,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:53,940 INFO L129 PetriNetUnfolder]: 229/2691 cut-off events. [2021-03-24 13:40:53,940 INFO L130 PetriNetUnfolder]: For 123712/124210 co-relation queries the response was YES. [2021-03-24 13:40:53,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22357 conditions, 2691 events. 229/2691 cut-off events. For 123712/124210 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 37651 event pairs, 53 based on Foata normal form. 18/2603 useless extension candidates. Maximal degree in co-relation 22222. Up to 406 conditions per place. [2021-03-24 13:40:53,971 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 260 selfloop transitions, 169 changer transitions 0/443 dead transitions. [2021-03-24 13:40:53,971 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 443 transitions, 18498 flow [2021-03-24 13:40:53,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:53,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:53,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:53,972 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:53,972 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:53,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:53,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:53,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:53,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:53,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:53,973 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:53,973 INFO L185 Difference]: Start difference. First operand has 377 places, 437 transitions, 17454 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:53,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 443 transitions, 18498 flow [2021-03-24 13:40:54,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 443 transitions, 18233 flow, removed 14 selfloop flow, removed 3 redundant places. [2021-03-24 13:40:54,638 INFO L241 Difference]: Finished difference. Result has 382 places, 437 transitions, 17530 flow [2021-03-24 13:40:54,639 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=17189, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17530, PETRI_PLACES=382, PETRI_TRANSITIONS=437} [2021-03-24 13:40:54,639 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 344 predicate places. [2021-03-24 13:40:54,639 INFO L480 AbstractCegarLoop]: Abstraction has has 382 places, 437 transitions, 17530 flow [2021-03-24 13:40:54,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:54,639 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:54,639 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:54,639 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-03-24 13:40:54,639 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:54,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:54,639 INFO L82 PathProgramCache]: Analyzing trace with hash -2059821630, now seen corresponding path program 68 times [2021-03-24 13:40:54,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:54,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651764759] [2021-03-24 13:40:54,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:54,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:54,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:54,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:54,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:54,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:54,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:54,655 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:40:54,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:40:54,665 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:40:54,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:40:54,680 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:54,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:54,697 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:54,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:54,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651764759] [2021-03-24 13:40:54,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:54,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:54,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079177228] [2021-03-24 13:40:54,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:54,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:54,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:54,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:54,715 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:54,715 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 437 transitions, 17530 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:54,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:54,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:54,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:55,395 INFO L129 PetriNetUnfolder]: 229/2690 cut-off events. [2021-03-24 13:40:55,395 INFO L130 PetriNetUnfolder]: For 126698/127196 co-relation queries the response was YES. [2021-03-24 13:40:55,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22670 conditions, 2690 events. 229/2690 cut-off events. For 126698/127196 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 37601 event pairs, 53 based on Foata normal form. 18/2601 useless extension candidates. Maximal degree in co-relation 22534. Up to 406 conditions per place. [2021-03-24 13:40:55,426 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 250 selfloop transitions, 165 changer transitions 14/443 dead transitions. [2021-03-24 13:40:55,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 443 transitions, 18582 flow [2021-03-24 13:40:55,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:55,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:55,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:55,427 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:55,427 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:55,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:55,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:55,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:55,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:55,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:55,428 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:55,428 INFO L185 Difference]: Start difference. First operand has 382 places, 437 transitions, 17530 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:55,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 443 transitions, 18582 flow [2021-03-24 13:40:56,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 443 transitions, 18272 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 13:40:56,118 INFO L241 Difference]: Finished difference. Result has 386 places, 423 transitions, 16831 flow [2021-03-24 13:40:56,118 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=17220, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16831, PETRI_PLACES=386, PETRI_TRANSITIONS=423} [2021-03-24 13:40:56,118 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 348 predicate places. [2021-03-24 13:40:56,118 INFO L480 AbstractCegarLoop]: Abstraction has has 386 places, 423 transitions, 16831 flow [2021-03-24 13:40:56,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:56,118 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:56,118 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:56,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-03-24 13:40:56,119 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:56,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:56,119 INFO L82 PathProgramCache]: Analyzing trace with hash 222700006, now seen corresponding path program 69 times [2021-03-24 13:40:56,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:56,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768991050] [2021-03-24 13:40:56,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:56,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:56,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:56,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:56,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:56,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:56,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:56,136 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:40:56,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:40:56,152 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:40:56,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:40:56,172 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:40:56,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:40:56,189 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:56,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:56,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:56,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768991050] [2021-03-24 13:40:56,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:56,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:56,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873443232] [2021-03-24 13:40:56,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:56,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:56,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:56,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:56,207 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:56,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 423 transitions, 16831 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:56,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:56,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:56,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:56,855 INFO L129 PetriNetUnfolder]: 228/2648 cut-off events. [2021-03-24 13:40:56,856 INFO L130 PetriNetUnfolder]: For 127173/127668 co-relation queries the response was YES. [2021-03-24 13:40:56,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22474 conditions, 2648 events. 228/2648 cut-off events. For 127173/127668 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 36878 event pairs, 53 based on Foata normal form. 18/2562 useless extension candidates. Maximal degree in co-relation 22337. Up to 406 conditions per place. [2021-03-24 13:40:56,886 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 268 selfloop transitions, 144 changer transitions 3/429 dead transitions. [2021-03-24 13:40:56,886 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 429 transitions, 17863 flow [2021-03-24 13:40:56,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:56,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:56,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:56,887 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:56,887 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:56,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:56,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:56,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:56,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:56,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:56,888 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:56,888 INFO L185 Difference]: Start difference. First operand has 386 places, 423 transitions, 16831 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:56,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 429 transitions, 17863 flow [2021-03-24 13:40:57,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 429 transitions, 17403 flow, removed 31 selfloop flow, removed 11 redundant places. [2021-03-24 13:40:57,545 INFO L241 Difference]: Finished difference. Result has 377 places, 420 transitions, 16574 flow [2021-03-24 13:40:57,545 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=16419, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16574, PETRI_PLACES=377, PETRI_TRANSITIONS=420} [2021-03-24 13:40:57,545 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 339 predicate places. [2021-03-24 13:40:57,545 INFO L480 AbstractCegarLoop]: Abstraction has has 377 places, 420 transitions, 16574 flow [2021-03-24 13:40:57,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:57,546 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:57,546 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:57,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-03-24 13:40:57,546 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:57,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:57,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1799376378, now seen corresponding path program 70 times [2021-03-24 13:40:57,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:57,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37205327] [2021-03-24 13:40:57,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:57,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:57,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:57,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:57,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:57,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:57,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:57,565 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:40:57,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:40:57,582 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:40:57,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:40:57,595 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:40:57,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:40:57,611 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:57,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:57,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:57,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37205327] [2021-03-24 13:40:57,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:57,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:57,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719684062] [2021-03-24 13:40:57,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:57,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:57,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:57,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:57,629 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:57,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 420 transitions, 16574 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:57,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:57,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:57,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:58,233 INFO L129 PetriNetUnfolder]: 227/2636 cut-off events. [2021-03-24 13:40:58,233 INFO L130 PetriNetUnfolder]: For 108801/109296 co-relation queries the response was YES. [2021-03-24 13:40:58,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21035 conditions, 2636 events. 227/2636 cut-off events. For 108801/109296 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 36638 event pairs, 53 based on Foata normal form. 19/2551 useless extension candidates. Maximal degree in co-relation 20903. Up to 406 conditions per place. [2021-03-24 13:40:58,262 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 260 selfloop transitions, 152 changer transitions 0/426 dead transitions. [2021-03-24 13:40:58,262 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 426 transitions, 17560 flow [2021-03-24 13:40:58,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:58,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:58,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:58,263 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:58,263 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:58,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:58,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:58,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:58,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:58,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:58,264 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:58,264 INFO L185 Difference]: Start difference. First operand has 377 places, 420 transitions, 16574 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:58,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 426 transitions, 17560 flow [2021-03-24 13:40:58,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 426 transitions, 17403 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-03-24 13:40:58,868 INFO L241 Difference]: Finished difference. Result has 380 places, 420 transitions, 16732 flow [2021-03-24 13:40:58,868 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=16425, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16732, PETRI_PLACES=380, PETRI_TRANSITIONS=420} [2021-03-24 13:40:58,868 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 342 predicate places. [2021-03-24 13:40:58,868 INFO L480 AbstractCegarLoop]: Abstraction has has 380 places, 420 transitions, 16732 flow [2021-03-24 13:40:58,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:58,868 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:58,868 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:58,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-03-24 13:40:58,868 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:40:58,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:58,869 INFO L82 PathProgramCache]: Analyzing trace with hash -259402748, now seen corresponding path program 71 times [2021-03-24 13:40:58,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:58,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154784767] [2021-03-24 13:40:58,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:58,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:58,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:40:58,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:58,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:58,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:58,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:58,885 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:40:58,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:40:58,901 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:40:58,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:40:58,923 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:40:58,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:40:58,940 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:40:58,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:40:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:58,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154784767] [2021-03-24 13:40:58,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:58,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:58,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717379680] [2021-03-24 13:40:58,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:40:58,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:58,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:40:58,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:40:58,958 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:40:58,958 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 420 transitions, 16732 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:58,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:58,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:40:58,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:59,579 INFO L129 PetriNetUnfolder]: 227/2635 cut-off events. [2021-03-24 13:40:59,580 INFO L130 PetriNetUnfolder]: For 109137/109632 co-relation queries the response was YES. [2021-03-24 13:40:59,604 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21264 conditions, 2635 events. 227/2635 cut-off events. For 109137/109632 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 36660 event pairs, 53 based on Foata normal form. 19/2551 useless extension candidates. Maximal degree in co-relation 21133. Up to 406 conditions per place. [2021-03-24 13:40:59,610 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 260 selfloop transitions, 148 changer transitions 4/426 dead transitions. [2021-03-24 13:40:59,610 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 426 transitions, 17718 flow [2021-03-24 13:40:59,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:40:59,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:40:59,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:40:59,610 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:40:59,611 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:40:59,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:40:59,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:59,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:40:59,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:59,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:59,612 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:59,612 INFO L185 Difference]: Start difference. First operand has 380 places, 420 transitions, 16732 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:40:59,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 426 transitions, 17718 flow [2021-03-24 13:41:00,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 426 transitions, 17391 flow, removed 18 selfloop flow, removed 5 redundant places. [2021-03-24 13:41:00,251 INFO L241 Difference]: Finished difference. Result has 383 places, 416 transitions, 16482 flow [2021-03-24 13:41:00,251 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=16405, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16482, PETRI_PLACES=383, PETRI_TRANSITIONS=416} [2021-03-24 13:41:00,252 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 345 predicate places. [2021-03-24 13:41:00,252 INFO L480 AbstractCegarLoop]: Abstraction has has 383 places, 416 transitions, 16482 flow [2021-03-24 13:41:00,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:00,252 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:00,252 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:00,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-03-24 13:41:00,252 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:00,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:00,252 INFO L82 PathProgramCache]: Analyzing trace with hash 190516096, now seen corresponding path program 72 times [2021-03-24 13:41:00,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:00,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085163745] [2021-03-24 13:41:00,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:00,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:00,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:00,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:00,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:00,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:00,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:00,270 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:41:00,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:41:00,284 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-24 13:41:00,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 13:41:00,306 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:00,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:00,328 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:00,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:00,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:00,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085163745] [2021-03-24 13:41:00,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:00,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:00,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633528199] [2021-03-24 13:41:00,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:00,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:00,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:00,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:00,346 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:00,346 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 416 transitions, 16482 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:00,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:00,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:00,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:00,953 INFO L129 PetriNetUnfolder]: 226/2620 cut-off events. [2021-03-24 13:41:00,953 INFO L130 PetriNetUnfolder]: For 109010/109503 co-relation queries the response was YES. [2021-03-24 13:41:00,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21401 conditions, 2620 events. 226/2620 cut-off events. For 109010/109503 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 36367 event pairs, 53 based on Foata normal form. 18/2536 useless extension candidates. Maximal degree in co-relation 21271. Up to 406 conditions per place. [2021-03-24 13:41:00,981 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 262 selfloop transitions, 144 changer transitions 2/422 dead transitions. [2021-03-24 13:41:00,981 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 422 transitions, 17468 flow [2021-03-24 13:41:00,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:00,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:00,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:00,982 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:00,982 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:00,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:00,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:00,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:00,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:00,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:00,983 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:00,983 INFO L185 Difference]: Start difference. First operand has 383 places, 416 transitions, 16482 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:00,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 422 transitions, 17468 flow [2021-03-24 13:41:01,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 422 transitions, 17228 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-03-24 13:41:01,601 INFO L241 Difference]: Finished difference. Result has 385 places, 415 transitions, 16535 flow [2021-03-24 13:41:01,601 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=16258, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16535, PETRI_PLACES=385, PETRI_TRANSITIONS=415} [2021-03-24 13:41:01,602 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 347 predicate places. [2021-03-24 13:41:01,602 INFO L480 AbstractCegarLoop]: Abstraction has has 385 places, 415 transitions, 16535 flow [2021-03-24 13:41:01,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:01,602 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:01,602 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:01,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-03-24 13:41:01,602 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:01,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:01,602 INFO L82 PathProgramCache]: Analyzing trace with hash -775394714, now seen corresponding path program 73 times [2021-03-24 13:41:01,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:01,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4514068] [2021-03-24 13:41:01,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:01,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:01,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:01,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:01,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:01,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:01,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:01,620 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:41:01,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:41:01,636 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-24 13:41:01,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 13:41:01,657 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:01,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:01,674 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:01,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:01,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:01,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4514068] [2021-03-24 13:41:01,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:01,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:01,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246177118] [2021-03-24 13:41:01,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:01,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:01,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:01,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:01,691 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:01,691 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 415 transitions, 16535 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:01,691 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:01,691 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:01,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:02,308 INFO L129 PetriNetUnfolder]: 225/2610 cut-off events. [2021-03-24 13:41:02,308 INFO L130 PetriNetUnfolder]: For 107478/107973 co-relation queries the response was YES. [2021-03-24 13:41:02,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21180 conditions, 2610 events. 225/2610 cut-off events. For 107478/107973 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 36190 event pairs, 53 based on Foata normal form. 19/2526 useless extension candidates. Maximal degree in co-relation 21050. Up to 406 conditions per place. [2021-03-24 13:41:02,336 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 261 selfloop transitions, 143 changer transitions 2/420 dead transitions. [2021-03-24 13:41:02,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 420 transitions, 17465 flow [2021-03-24 13:41:02,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:02,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:02,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:02,337 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:02,337 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:02,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:02,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:02,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:02,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:02,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:02,338 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:02,339 INFO L185 Difference]: Start difference. First operand has 385 places, 415 transitions, 16535 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:02,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 420 transitions, 17465 flow [2021-03-24 13:41:02,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 420 transitions, 17229 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-03-24 13:41:02,976 INFO L241 Difference]: Finished difference. Result has 388 places, 413 transitions, 16488 flow [2021-03-24 13:41:02,976 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=16307, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16488, PETRI_PLACES=388, PETRI_TRANSITIONS=413} [2021-03-24 13:41:02,976 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 350 predicate places. [2021-03-24 13:41:02,976 INFO L480 AbstractCegarLoop]: Abstraction has has 388 places, 413 transitions, 16488 flow [2021-03-24 13:41:02,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:02,976 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:02,976 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:02,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-03-24 13:41:02,977 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:02,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:02,977 INFO L82 PathProgramCache]: Analyzing trace with hash -323408046, now seen corresponding path program 74 times [2021-03-24 13:41:02,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:02,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107995245] [2021-03-24 13:41:02,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:02,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:02,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:02,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:02,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:02,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:02,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:02,993 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:41:02,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:41:03,009 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:41:03,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:41:03,035 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:41:03,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:41:03,055 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:03,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:03,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107995245] [2021-03-24 13:41:03,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:03,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:03,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491607924] [2021-03-24 13:41:03,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:03,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:03,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:03,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:03,076 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:03,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 413 transitions, 16488 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:03,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:03,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:03,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:03,684 INFO L129 PetriNetUnfolder]: 224/2600 cut-off events. [2021-03-24 13:41:03,684 INFO L130 PetriNetUnfolder]: For 106882/107377 co-relation queries the response was YES. [2021-03-24 13:41:03,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21177 conditions, 2600 events. 224/2600 cut-off events. For 106882/107377 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 36049 event pairs, 53 based on Foata normal form. 19/2516 useless extension candidates. Maximal degree in co-relation 21047. Up to 427 conditions per place. [2021-03-24 13:41:03,713 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 272 selfloop transitions, 141 changer transitions 0/427 dead transitions. [2021-03-24 13:41:03,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 427 transitions, 17792 flow [2021-03-24 13:41:03,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:03,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:03,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:03,713 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:03,714 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:03,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:03,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:03,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:03,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:03,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:03,715 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:03,715 INFO L185 Difference]: Start difference. First operand has 388 places, 413 transitions, 16488 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:03,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 427 transitions, 17792 flow [2021-03-24 13:41:04,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 427 transitions, 17416 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-03-24 13:41:04,332 INFO L241 Difference]: Finished difference. Result has 390 places, 422 transitions, 16829 flow [2021-03-24 13:41:04,333 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=16120, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16829, PETRI_PLACES=390, PETRI_TRANSITIONS=422} [2021-03-24 13:41:04,333 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 352 predicate places. [2021-03-24 13:41:04,333 INFO L480 AbstractCegarLoop]: Abstraction has has 390 places, 422 transitions, 16829 flow [2021-03-24 13:41:04,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:04,333 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:04,333 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:04,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-03-24 13:41:04,333 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:04,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:04,333 INFO L82 PathProgramCache]: Analyzing trace with hash 723540934, now seen corresponding path program 75 times [2021-03-24 13:41:04,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:04,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744785880] [2021-03-24 13:41:04,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:04,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:04,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:04,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:04,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:04,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:04,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:04,351 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:41:04,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:41:04,365 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:41:04,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:41:04,383 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:41:04,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:41:04,406 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:04,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:04,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744785880] [2021-03-24 13:41:04,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:04,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:04,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201138161] [2021-03-24 13:41:04,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:04,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:04,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:04,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:04,427 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:04,427 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 422 transitions, 16829 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:04,427 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:04,427 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:04,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:05,092 INFO L129 PetriNetUnfolder]: 224/2599 cut-off events. [2021-03-24 13:41:05,093 INFO L130 PetriNetUnfolder]: For 107192/107687 co-relation queries the response was YES. [2021-03-24 13:41:05,118 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21038 conditions, 2599 events. 224/2599 cut-off events. For 107192/107687 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 36034 event pairs, 53 based on Foata normal form. 19/2515 useless extension candidates. Maximal degree in co-relation 20907. Up to 427 conditions per place. [2021-03-24 13:41:05,122 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 276 selfloop transitions, 135 changer transitions 2/427 dead transitions. [2021-03-24 13:41:05,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 427 transitions, 17773 flow [2021-03-24 13:41:05,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:05,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:05,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:05,123 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:05,123 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:05,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:05,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:05,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:05,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:05,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:05,124 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:05,125 INFO L185 Difference]: Start difference. First operand has 390 places, 422 transitions, 16829 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:05,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 427 transitions, 17773 flow [2021-03-24 13:41:05,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 427 transitions, 17549 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-24 13:41:05,736 INFO L241 Difference]: Finished difference. Result has 395 places, 420 transitions, 16780 flow [2021-03-24 13:41:05,736 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=16605, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16780, PETRI_PLACES=395, PETRI_TRANSITIONS=420} [2021-03-24 13:41:05,736 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 357 predicate places. [2021-03-24 13:41:05,736 INFO L480 AbstractCegarLoop]: Abstraction has has 395 places, 420 transitions, 16780 flow [2021-03-24 13:41:05,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:05,736 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:05,736 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:05,736 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-03-24 13:41:05,736 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:05,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:05,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1524776512, now seen corresponding path program 76 times [2021-03-24 13:41:05,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:05,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370101215] [2021-03-24 13:41:05,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:05,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:05,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:05,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:05,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:05,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:05,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:05,754 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:41:05,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:41:05,772 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:41:05,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:41:05,787 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:05,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:05,807 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:05,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:05,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:05,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370101215] [2021-03-24 13:41:05,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:05,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:05,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717277723] [2021-03-24 13:41:05,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:05,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:05,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:05,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:05,825 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:05,826 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 420 transitions, 16780 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:05,826 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:05,826 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:05,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:06,465 INFO L129 PetriNetUnfolder]: 223/2589 cut-off events. [2021-03-24 13:41:06,466 INFO L130 PetriNetUnfolder]: For 109395/109888 co-relation queries the response was YES. [2021-03-24 13:41:06,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21280 conditions, 2589 events. 223/2589 cut-off events. For 109395/109888 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 35887 event pairs, 53 based on Foata normal form. 18/2504 useless extension candidates. Maximal degree in co-relation 21148. Up to 427 conditions per place. [2021-03-24 13:41:06,495 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 279 selfloop transitions, 132 changer transitions 1/426 dead transitions. [2021-03-24 13:41:06,495 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 426 transitions, 17772 flow [2021-03-24 13:41:06,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:06,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:06,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:06,496 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:06,496 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:06,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:06,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:06,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:06,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:06,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:06,497 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:06,497 INFO L185 Difference]: Start difference. First operand has 395 places, 420 transitions, 16780 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:06,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 426 transitions, 17772 flow [2021-03-24 13:41:07,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 426 transitions, 17501 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-24 13:41:07,115 INFO L241 Difference]: Finished difference. Result has 398 places, 420 transitions, 16787 flow [2021-03-24 13:41:07,115 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=16518, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16787, PETRI_PLACES=398, PETRI_TRANSITIONS=420} [2021-03-24 13:41:07,115 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 360 predicate places. [2021-03-24 13:41:07,115 INFO L480 AbstractCegarLoop]: Abstraction has has 398 places, 420 transitions, 16787 flow [2021-03-24 13:41:07,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:07,115 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:07,115 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:07,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-03-24 13:41:07,116 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:07,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:07,116 INFO L82 PathProgramCache]: Analyzing trace with hash 946021150, now seen corresponding path program 77 times [2021-03-24 13:41:07,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:07,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552005596] [2021-03-24 13:41:07,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:07,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:07,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:07,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:07,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:07,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:07,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:07,133 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:41:07,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:41:07,148 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:41:07,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:41:07,169 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:07,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:07,187 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:07,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:07,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:07,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552005596] [2021-03-24 13:41:07,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:07,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:07,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723624641] [2021-03-24 13:41:07,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:07,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:07,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:07,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:07,206 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:07,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 420 transitions, 16787 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:07,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:07,206 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:07,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:07,825 INFO L129 PetriNetUnfolder]: 222/2580 cut-off events. [2021-03-24 13:41:07,825 INFO L130 PetriNetUnfolder]: For 109360/109853 co-relation queries the response was YES. [2021-03-24 13:41:07,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21252 conditions, 2580 events. 222/2580 cut-off events. For 109360/109853 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 35695 event pairs, 53 based on Foata normal form. 18/2495 useless extension candidates. Maximal degree in co-relation 21119. Up to 427 conditions per place. [2021-03-24 13:41:07,854 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 273 selfloop transitions, 134 changer transitions 4/425 dead transitions. [2021-03-24 13:41:07,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 425 transitions, 17735 flow [2021-03-24 13:41:07,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:07,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:07,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:07,855 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:07,855 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:07,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:07,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:07,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:07,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:07,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:07,856 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:07,856 INFO L185 Difference]: Start difference. First operand has 398 places, 420 transitions, 16787 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:07,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 425 transitions, 17735 flow [2021-03-24 13:41:08,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 425 transitions, 17473 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 13:41:08,463 INFO L241 Difference]: Finished difference. Result has 400 places, 416 transitions, 16595 flow [2021-03-24 13:41:08,463 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=16533, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16595, PETRI_PLACES=400, PETRI_TRANSITIONS=416} [2021-03-24 13:41:08,464 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 362 predicate places. [2021-03-24 13:41:08,464 INFO L480 AbstractCegarLoop]: Abstraction has has 400 places, 416 transitions, 16595 flow [2021-03-24 13:41:08,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:08,464 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:08,464 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:08,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-03-24 13:41:08,464 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:08,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:08,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1610800874, now seen corresponding path program 78 times [2021-03-24 13:41:08,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:08,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86145107] [2021-03-24 13:41:08,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:08,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:08,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:08,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:08,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:08,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:08,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:08,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:08,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:41:08,487 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-24 13:41:08,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 13:41:08,506 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:08,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:08,527 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:08,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:08,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:08,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86145107] [2021-03-24 13:41:08,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:08,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:08,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623890216] [2021-03-24 13:41:08,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:08,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:08,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:08,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:08,544 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:08,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 416 transitions, 16595 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:08,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:08,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:08,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:09,200 INFO L129 PetriNetUnfolder]: 224/2727 cut-off events. [2021-03-24 13:41:09,200 INFO L130 PetriNetUnfolder]: For 114617/115112 co-relation queries the response was YES. [2021-03-24 13:41:09,225 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22288 conditions, 2727 events. 224/2727 cut-off events. For 114617/115112 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 38368 event pairs, 53 based on Foata normal form. 16/2640 useless extension candidates. Maximal degree in co-relation 22155. Up to 428 conditions per place. [2021-03-24 13:41:09,230 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 327 selfloop transitions, 132 changer transitions 2/475 dead transitions. [2021-03-24 13:41:09,230 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 475 transitions, 20031 flow [2021-03-24 13:41:09,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:09,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:09,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:09,231 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:09,231 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:09,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:09,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:09,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:09,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:09,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:09,232 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:09,232 INFO L185 Difference]: Start difference. First operand has 400 places, 416 transitions, 16595 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:09,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 475 transitions, 20031 flow [2021-03-24 13:41:09,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 475 transitions, 19694 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-03-24 13:41:09,881 INFO L241 Difference]: Finished difference. Result has 404 places, 434 transitions, 17612 flow [2021-03-24 13:41:09,881 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=16328, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17612, PETRI_PLACES=404, PETRI_TRANSITIONS=434} [2021-03-24 13:41:09,881 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 366 predicate places. [2021-03-24 13:41:09,881 INFO L480 AbstractCegarLoop]: Abstraction has has 404 places, 434 transitions, 17612 flow [2021-03-24 13:41:09,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:09,881 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:09,881 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:09,881 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-03-24 13:41:09,881 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:09,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:09,882 INFO L82 PathProgramCache]: Analyzing trace with hash -321503262, now seen corresponding path program 79 times [2021-03-24 13:41:09,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:09,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551751028] [2021-03-24 13:41:09,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:09,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:09,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:09,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:09,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:09,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:09,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:09,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:09,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:41:09,904 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-24 13:41:09,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 13:41:09,926 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:09,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:09,945 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:09,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:09,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551751028] [2021-03-24 13:41:09,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:09,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:09,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320575526] [2021-03-24 13:41:09,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:09,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:09,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:09,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:09,962 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:09,963 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 434 transitions, 17612 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:09,963 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:09,963 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:09,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:10,625 INFO L129 PetriNetUnfolder]: 223/2717 cut-off events. [2021-03-24 13:41:10,625 INFO L130 PetriNetUnfolder]: For 116507/117041 co-relation queries the response was YES. [2021-03-24 13:41:10,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22124 conditions, 2717 events. 223/2717 cut-off events. For 116507/117041 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 38173 event pairs, 53 based on Foata normal form. 19/2640 useless extension candidates. Maximal degree in co-relation 21988. Up to 448 conditions per place. [2021-03-24 13:41:10,655 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 300 selfloop transitions, 143 changer transitions 2/459 dead transitions. [2021-03-24 13:41:10,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 459 transitions, 19486 flow [2021-03-24 13:41:10,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:10,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:10,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:10,656 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:10,656 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:10,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:10,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:10,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:10,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:10,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:10,657 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:10,657 INFO L185 Difference]: Start difference. First operand has 404 places, 434 transitions, 17612 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:10,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 459 transitions, 19486 flow [2021-03-24 13:41:11,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 459 transitions, 19339 flow, removed 15 selfloop flow, removed 4 redundant places. [2021-03-24 13:41:11,332 INFO L241 Difference]: Finished difference. Result has 410 places, 438 transitions, 18067 flow [2021-03-24 13:41:11,332 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=17474, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18067, PETRI_PLACES=410, PETRI_TRANSITIONS=438} [2021-03-24 13:41:11,332 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 372 predicate places. [2021-03-24 13:41:11,332 INFO L480 AbstractCegarLoop]: Abstraction has has 410 places, 438 transitions, 18067 flow [2021-03-24 13:41:11,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:11,332 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:11,333 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:11,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-03-24 13:41:11,333 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:11,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:11,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1127740514, now seen corresponding path program 80 times [2021-03-24 13:41:11,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:11,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456529386] [2021-03-24 13:41:11,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:11,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:11,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:11,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:11,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:11,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:11,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:11,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:11,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:41:11,358 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-24 13:41:11,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 13:41:11,380 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:11,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:11,397 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:11,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:11,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:11,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456529386] [2021-03-24 13:41:11,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:11,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:11,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701334090] [2021-03-24 13:41:11,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:11,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:11,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:11,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:11,415 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:11,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 438 transitions, 18067 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:11,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:11,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:11,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:12,096 INFO L129 PetriNetUnfolder]: 222/2707 cut-off events. [2021-03-24 13:41:12,096 INFO L130 PetriNetUnfolder]: For 120106/120681 co-relation queries the response was YES. [2021-03-24 13:41:12,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22348 conditions, 2707 events. 222/2707 cut-off events. For 120106/120681 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 38011 event pairs, 53 based on Foata normal form. 22/2632 useless extension candidates. Maximal degree in co-relation 22210. Up to 448 conditions per place. [2021-03-24 13:41:12,127 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 300 selfloop transitions, 141 changer transitions 2/457 dead transitions. [2021-03-24 13:41:12,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 457 transitions, 19645 flow [2021-03-24 13:41:12,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:12,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:12,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:12,128 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:12,128 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:12,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:12,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:12,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:12,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:12,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:12,129 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:12,129 INFO L185 Difference]: Start difference. First operand has 410 places, 438 transitions, 18067 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:12,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 457 transitions, 19645 flow [2021-03-24 13:41:12,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 457 transitions, 19423 flow, removed 17 selfloop flow, removed 5 redundant places. [2021-03-24 13:41:12,819 INFO L241 Difference]: Finished difference. Result has 413 places, 439 transitions, 18212 flow [2021-03-24 13:41:12,820 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=17853, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18212, PETRI_PLACES=413, PETRI_TRANSITIONS=439} [2021-03-24 13:41:12,820 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 375 predicate places. [2021-03-24 13:41:12,820 INFO L480 AbstractCegarLoop]: Abstraction has has 413 places, 439 transitions, 18212 flow [2021-03-24 13:41:12,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:12,820 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:12,820 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:12,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-03-24 13:41:12,820 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:12,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:12,820 INFO L82 PathProgramCache]: Analyzing trace with hash -807282246, now seen corresponding path program 81 times [2021-03-24 13:41:12,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:12,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645578570] [2021-03-24 13:41:12,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:12,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:12,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:12,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:12,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:12,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:12,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:12,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:12,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:41:12,845 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:41:12,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:41:12,861 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:12,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:12,879 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:12,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:12,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:12,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645578570] [2021-03-24 13:41:12,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:12,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:12,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294530583] [2021-03-24 13:41:12,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:12,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:12,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:12,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:12,897 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:12,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 439 transitions, 18212 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:12,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:12,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:12,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:13,583 INFO L129 PetriNetUnfolder]: 221/2697 cut-off events. [2021-03-24 13:41:13,583 INFO L130 PetriNetUnfolder]: For 118776/119344 co-relation queries the response was YES. [2021-03-24 13:41:13,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22466 conditions, 2697 events. 221/2697 cut-off events. For 118776/119344 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 37852 event pairs, 53 based on Foata normal form. 22/2622 useless extension candidates. Maximal degree in co-relation 22329. Up to 448 conditions per place. [2021-03-24 13:41:13,614 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 296 selfloop transitions, 145 changer transitions 0/455 dead transitions. [2021-03-24 13:41:13,614 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 455 transitions, 19626 flow [2021-03-24 13:41:13,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:13,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:13,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:13,615 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:13,615 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:13,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:13,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:13,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:13,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:13,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:13,616 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:13,616 INFO L185 Difference]: Start difference. First operand has 413 places, 439 transitions, 18212 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:13,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 455 transitions, 19626 flow [2021-03-24 13:41:14,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 455 transitions, 19344 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-03-24 13:41:14,319 INFO L241 Difference]: Finished difference. Result has 416 places, 447 transitions, 18592 flow [2021-03-24 13:41:14,320 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=17938, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18592, PETRI_PLACES=416, PETRI_TRANSITIONS=447} [2021-03-24 13:41:14,320 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 378 predicate places. [2021-03-24 13:41:14,320 INFO L480 AbstractCegarLoop]: Abstraction has has 416 places, 447 transitions, 18592 flow [2021-03-24 13:41:14,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:14,320 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:14,320 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:14,320 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-03-24 13:41:14,320 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:14,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:14,320 INFO L82 PathProgramCache]: Analyzing trace with hash -2123439550, now seen corresponding path program 82 times [2021-03-24 13:41:14,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:14,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422034462] [2021-03-24 13:41:14,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:14,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:14,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:14,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:14,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:14,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:14,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:14,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:14,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:41:14,347 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:41:14,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:41:14,360 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:14,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:14,377 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:14,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:14,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:14,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422034462] [2021-03-24 13:41:14,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:14,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:14,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725448447] [2021-03-24 13:41:14,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:14,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:14,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:14,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:14,396 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:14,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 447 transitions, 18592 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:14,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:14,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:14,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:15,080 INFO L129 PetriNetUnfolder]: 221/2696 cut-off events. [2021-03-24 13:41:15,080 INFO L130 PetriNetUnfolder]: For 119811/120377 co-relation queries the response was YES. [2021-03-24 13:41:15,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22494 conditions, 2696 events. 221/2696 cut-off events. For 119811/120377 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 37880 event pairs, 53 based on Foata normal form. 21/2620 useless extension candidates. Maximal degree in co-relation 22356. Up to 448 conditions per place. [2021-03-24 13:41:15,115 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 297 selfloop transitions, 139 changer transitions 5/455 dead transitions. [2021-03-24 13:41:15,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 455 transitions, 19704 flow [2021-03-24 13:41:15,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:15,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:15,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:15,116 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:15,116 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:15,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:15,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:15,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:15,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:15,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:15,117 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:15,117 INFO L185 Difference]: Start difference. First operand has 416 places, 447 transitions, 18592 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:15,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 455 transitions, 19704 flow [2021-03-24 13:41:15,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 455 transitions, 19570 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-24 13:41:15,869 INFO L241 Difference]: Finished difference. Result has 423 places, 444 transitions, 18573 flow [2021-03-24 13:41:15,869 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18458, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18573, PETRI_PLACES=423, PETRI_TRANSITIONS=444} [2021-03-24 13:41:15,869 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 385 predicate places. [2021-03-24 13:41:15,869 INFO L480 AbstractCegarLoop]: Abstraction has has 423 places, 444 transitions, 18573 flow [2021-03-24 13:41:15,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:15,869 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:15,869 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:15,869 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-03-24 13:41:15,870 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:15,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:15,870 INFO L82 PathProgramCache]: Analyzing trace with hash -390962630, now seen corresponding path program 83 times [2021-03-24 13:41:15,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:15,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958744437] [2021-03-24 13:41:15,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:15,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:15,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:15,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:15,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:15,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:15,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:15,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:15,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:41:15,895 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:41:15,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:41:15,907 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:15,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:15,925 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:15,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:15,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:15,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958744437] [2021-03-24 13:41:15,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:15,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:15,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36339207] [2021-03-24 13:41:15,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:15,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:15,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:15,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:15,942 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:15,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 444 transitions, 18573 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:15,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:15,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:15,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:16,654 INFO L129 PetriNetUnfolder]: 220/2679 cut-off events. [2021-03-24 13:41:16,654 INFO L130 PetriNetUnfolder]: For 122358/122924 co-relation queries the response was YES. [2021-03-24 13:41:16,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22820 conditions, 2679 events. 220/2679 cut-off events. For 122358/122924 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 37574 event pairs, 53 based on Foata normal form. 21/2603 useless extension candidates. Maximal degree in co-relation 22680. Up to 448 conditions per place. [2021-03-24 13:41:16,688 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 300 selfloop transitions, 135 changer transitions 1/450 dead transitions. [2021-03-24 13:41:16,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 450 transitions, 19599 flow [2021-03-24 13:41:16,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:16,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:16,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:16,689 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:16,689 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:16,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:16,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:16,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:16,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:16,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:16,690 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:16,690 INFO L185 Difference]: Start difference. First operand has 423 places, 444 transitions, 18573 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:16,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 450 transitions, 19599 flow [2021-03-24 13:41:17,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 450 transitions, 19314 flow, removed 11 selfloop flow, removed 6 redundant places. [2021-03-24 13:41:17,432 INFO L241 Difference]: Finished difference. Result has 424 places, 445 transitions, 18625 flow [2021-03-24 13:41:17,433 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18304, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18625, PETRI_PLACES=424, PETRI_TRANSITIONS=445} [2021-03-24 13:41:17,433 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 386 predicate places. [2021-03-24 13:41:17,433 INFO L480 AbstractCegarLoop]: Abstraction has has 424 places, 445 transitions, 18625 flow [2021-03-24 13:41:17,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:17,433 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:17,433 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:17,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-03-24 13:41:17,433 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:17,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:17,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1098442366, now seen corresponding path program 84 times [2021-03-24 13:41:17,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:17,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450026019] [2021-03-24 13:41:17,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:17,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:17,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:17,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:17,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:17,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:17,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:17,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:17,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:41:17,458 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:41:17,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:41:17,471 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:17,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:17,491 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:17,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:17,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450026019] [2021-03-24 13:41:17,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:17,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:17,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438493997] [2021-03-24 13:41:17,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:17,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:17,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:17,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:17,508 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:17,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 445 transitions, 18625 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:17,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:17,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:17,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:18,214 INFO L129 PetriNetUnfolder]: 219/2670 cut-off events. [2021-03-24 13:41:18,215 INFO L130 PetriNetUnfolder]: For 120663/121229 co-relation queries the response was YES. [2021-03-24 13:41:18,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22535 conditions, 2670 events. 219/2670 cut-off events. For 120663/121229 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 37427 event pairs, 53 based on Foata normal form. 21/2594 useless extension candidates. Maximal degree in co-relation 22395. Up to 448 conditions per place. [2021-03-24 13:41:18,251 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 299 selfloop transitions, 134 changer transitions 2/449 dead transitions. [2021-03-24 13:41:18,251 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 449 transitions, 19575 flow [2021-03-24 13:41:18,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:18,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:18,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:18,252 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:18,252 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:18,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:18,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:18,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:18,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:18,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:18,253 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:18,253 INFO L185 Difference]: Start difference. First operand has 424 places, 445 transitions, 18625 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:18,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 449 transitions, 19575 flow [2021-03-24 13:41:18,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 449 transitions, 19334 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 13:41:18,984 INFO L241 Difference]: Finished difference. Result has 426 places, 443 transitions, 18551 flow [2021-03-24 13:41:18,984 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18392, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18551, PETRI_PLACES=426, PETRI_TRANSITIONS=443} [2021-03-24 13:41:18,985 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 388 predicate places. [2021-03-24 13:41:18,985 INFO L480 AbstractCegarLoop]: Abstraction has has 426 places, 443 transitions, 18551 flow [2021-03-24 13:41:18,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:18,985 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:18,985 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:18,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-03-24 13:41:18,985 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:18,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:18,985 INFO L82 PathProgramCache]: Analyzing trace with hash -404992948, now seen corresponding path program 85 times [2021-03-24 13:41:18,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:18,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818431958] [2021-03-24 13:41:18,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:18,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:18,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:18,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:18,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:18,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:18,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:19,000 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:41:19,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:41:19,009 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:41:19,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:41:19,021 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:19,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:19,038 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:19,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:19,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818431958] [2021-03-24 13:41:19,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:19,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:19,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774409678] [2021-03-24 13:41:19,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:19,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:19,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:19,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:19,056 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:19,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 443 transitions, 18551 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:19,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:19,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:19,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:19,745 INFO L129 PetriNetUnfolder]: 218/2660 cut-off events. [2021-03-24 13:41:19,746 INFO L130 PetriNetUnfolder]: For 119980/120548 co-relation queries the response was YES. [2021-03-24 13:41:19,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22518 conditions, 2660 events. 218/2660 cut-off events. For 119980/120548 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 37248 event pairs, 53 based on Foata normal form. 17/2582 useless extension candidates. Maximal degree in co-relation 22379. Up to 430 conditions per place. [2021-03-24 13:41:19,778 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 255 selfloop transitions, 186 changer transitions 0/455 dead transitions. [2021-03-24 13:41:19,778 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 455 transitions, 19914 flow [2021-03-24 13:41:19,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:19,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:19,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:19,779 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:19,779 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:19,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:19,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:19,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:19,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:19,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:19,780 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:19,780 INFO L185 Difference]: Start difference. First operand has 426 places, 443 transitions, 18551 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:19,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 455 transitions, 19914 flow [2021-03-24 13:41:20,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 455 transitions, 19640 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 13:41:20,515 INFO L241 Difference]: Finished difference. Result has 429 places, 448 transitions, 19012 flow [2021-03-24 13:41:20,515 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18291, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19012, PETRI_PLACES=429, PETRI_TRANSITIONS=448} [2021-03-24 13:41:20,515 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 391 predicate places. [2021-03-24 13:41:20,515 INFO L480 AbstractCegarLoop]: Abstraction has has 429 places, 448 transitions, 19012 flow [2021-03-24 13:41:20,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:20,515 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:20,515 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:20,515 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-03-24 13:41:20,516 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:20,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:20,516 INFO L82 PathProgramCache]: Analyzing trace with hash -659693220, now seen corresponding path program 86 times [2021-03-24 13:41:20,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:20,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145858874] [2021-03-24 13:41:20,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:20,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:20,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:20,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:20,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:20,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:20,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:20,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:20,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:41:20,542 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:41:20,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:41:20,555 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:20,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:20,572 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:20,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:20,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:20,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145858874] [2021-03-24 13:41:20,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:20,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:20,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181408838] [2021-03-24 13:41:20,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:20,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:20,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:20,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:20,589 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:20,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 448 transitions, 19012 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:20,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:20,589 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:20,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:21,288 INFO L129 PetriNetUnfolder]: 218/2659 cut-off events. [2021-03-24 13:41:21,288 INFO L130 PetriNetUnfolder]: For 121484/122068 co-relation queries the response was YES. [2021-03-24 13:41:21,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22552 conditions, 2659 events. 218/2659 cut-off events. For 121484/122068 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 37285 event pairs, 53 based on Foata normal form. 17/2581 useless extension candidates. Maximal degree in co-relation 22412. Up to 430 conditions per place. [2021-03-24 13:41:21,319 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 270 selfloop transitions, 171 changer transitions 0/455 dead transitions. [2021-03-24 13:41:21,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 455 transitions, 20112 flow [2021-03-24 13:41:21,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:21,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:21,320 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:21,320 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:21,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:21,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:21,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:21,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:21,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:21,321 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:21,321 INFO L185 Difference]: Start difference. First operand has 429 places, 448 transitions, 19012 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:21,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 455 transitions, 20112 flow [2021-03-24 13:41:22,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 455 transitions, 19785 flow, removed 25 selfloop flow, removed 4 redundant places. [2021-03-24 13:41:22,061 INFO L241 Difference]: Finished difference. Result has 433 places, 448 transitions, 19030 flow [2021-03-24 13:41:22,061 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18685, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19030, PETRI_PLACES=433, PETRI_TRANSITIONS=448} [2021-03-24 13:41:22,061 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 395 predicate places. [2021-03-24 13:41:22,061 INFO L480 AbstractCegarLoop]: Abstraction has has 433 places, 448 transitions, 19030 flow [2021-03-24 13:41:22,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:22,061 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:22,061 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:22,061 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-03-24 13:41:22,061 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:22,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:22,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1100896414, now seen corresponding path program 87 times [2021-03-24 13:41:22,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:22,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509924855] [2021-03-24 13:41:22,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:22,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:22,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:22,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:22,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:22,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:22,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:22,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:22,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:41:22,084 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:41:22,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:41:22,107 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:41:22,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:41:22,124 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:22,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:22,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509924855] [2021-03-24 13:41:22,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:22,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:22,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732495319] [2021-03-24 13:41:22,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:22,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:22,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:22,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:22,144 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:22,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 448 transitions, 19030 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:22,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:22,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:22,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:22,854 INFO L129 PetriNetUnfolder]: 218/2658 cut-off events. [2021-03-24 13:41:22,854 INFO L130 PetriNetUnfolder]: For 123110/123682 co-relation queries the response was YES. [2021-03-24 13:41:22,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22852 conditions, 2658 events. 218/2658 cut-off events. For 123110/123682 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 37247 event pairs, 53 based on Foata normal form. 16/2579 useless extension candidates. Maximal degree in co-relation 22712. Up to 430 conditions per place. [2021-03-24 13:41:22,885 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 274 selfloop transitions, 165 changer transitions 2/455 dead transitions. [2021-03-24 13:41:22,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 455 transitions, 20138 flow [2021-03-24 13:41:22,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:22,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:22,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:22,886 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:22,886 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:22,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:22,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:22,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:22,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:22,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:22,887 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:22,887 INFO L185 Difference]: Start difference. First operand has 433 places, 448 transitions, 19030 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:22,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 455 transitions, 20138 flow [2021-03-24 13:41:23,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 455 transitions, 19851 flow, removed 21 selfloop flow, removed 3 redundant places. [2021-03-24 13:41:23,615 INFO L241 Difference]: Finished difference. Result has 438 places, 446 transitions, 18969 flow [2021-03-24 13:41:23,615 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18743, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18969, PETRI_PLACES=438, PETRI_TRANSITIONS=446} [2021-03-24 13:41:23,615 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 400 predicate places. [2021-03-24 13:41:23,615 INFO L480 AbstractCegarLoop]: Abstraction has has 438 places, 446 transitions, 18969 flow [2021-03-24 13:41:23,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:23,615 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:23,615 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:23,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-03-24 13:41:23,615 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:23,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:23,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1102592360, now seen corresponding path program 88 times [2021-03-24 13:41:23,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:23,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300553346] [2021-03-24 13:41:23,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:23,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:23,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:23,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:23,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:23,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:23,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:23,631 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:41:23,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:41:23,640 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:41:23,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:41:23,653 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:23,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:23,673 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:23,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:23,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:23,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300553346] [2021-03-24 13:41:23,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:23,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:23,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478928156] [2021-03-24 13:41:23,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:23,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:23,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:23,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:23,692 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:23,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 446 transitions, 18969 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:23,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:23,692 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:23,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:24,423 INFO L129 PetriNetUnfolder]: 217/2648 cut-off events. [2021-03-24 13:41:24,423 INFO L130 PetriNetUnfolder]: For 125384/125966 co-relation queries the response was YES. [2021-03-24 13:41:24,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23112 conditions, 2648 events. 217/2648 cut-off events. For 125384/125966 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 37043 event pairs, 53 based on Foata normal form. 16/2569 useless extension candidates. Maximal degree in co-relation 22971. Up to 430 conditions per place. [2021-03-24 13:41:24,456 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 248 selfloop transitions, 191 changer transitions 0/453 dead transitions. [2021-03-24 13:41:24,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 453 transitions, 20081 flow [2021-03-24 13:41:24,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:24,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:24,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:24,457 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:24,457 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:24,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:24,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:24,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:24,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:24,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:24,458 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:24,458 INFO L185 Difference]: Start difference. First operand has 438 places, 446 transitions, 18969 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:24,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 453 transitions, 20081 flow [2021-03-24 13:41:25,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 453 transitions, 19766 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 13:41:25,264 INFO L241 Difference]: Finished difference. Result has 440 places, 446 transitions, 19047 flow [2021-03-24 13:41:25,265 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18662, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19047, PETRI_PLACES=440, PETRI_TRANSITIONS=446} [2021-03-24 13:41:25,265 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 402 predicate places. [2021-03-24 13:41:25,265 INFO L480 AbstractCegarLoop]: Abstraction has has 440 places, 446 transitions, 19047 flow [2021-03-24 13:41:25,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:25,265 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:25,265 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:25,265 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-03-24 13:41:25,265 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:25,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:25,266 INFO L82 PathProgramCache]: Analyzing trace with hash -828247792, now seen corresponding path program 89 times [2021-03-24 13:41:25,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:25,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065477752] [2021-03-24 13:41:25,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:25,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:25,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:25,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:25,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:25,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:25,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:25,281 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:41:25,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:41:25,299 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:41:25,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:41:25,323 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:25,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:25,341 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:25,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:25,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:25,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065477752] [2021-03-24 13:41:25,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:25,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:25,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152677234] [2021-03-24 13:41:25,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:25,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:25,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:25,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:25,358 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:25,359 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 446 transitions, 19047 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:25,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:25,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:25,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:26,071 INFO L129 PetriNetUnfolder]: 217/2647 cut-off events. [2021-03-24 13:41:26,071 INFO L130 PetriNetUnfolder]: For 125324/125920 co-relation queries the response was YES. [2021-03-24 13:41:26,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23121 conditions, 2647 events. 217/2647 cut-off events. For 125324/125920 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 37008 event pairs, 53 based on Foata normal form. 17/2569 useless extension candidates. Maximal degree in co-relation 22980. Up to 430 conditions per place. [2021-03-24 13:41:26,104 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 254 selfloop transitions, 185 changer transitions 0/453 dead transitions. [2021-03-24 13:41:26,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 453 transitions, 20159 flow [2021-03-24 13:41:26,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:26,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:26,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:26,105 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:26,105 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:26,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:26,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:26,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:26,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:26,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:26,106 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:26,106 INFO L185 Difference]: Start difference. First operand has 440 places, 446 transitions, 19047 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:26,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 453 transitions, 20159 flow [2021-03-24 13:41:26,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 453 transitions, 19621 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-03-24 13:41:26,868 INFO L241 Difference]: Finished difference. Result has 443 places, 446 transitions, 18882 flow [2021-03-24 13:41:26,868 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18509, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18882, PETRI_PLACES=443, PETRI_TRANSITIONS=446} [2021-03-24 13:41:26,869 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 405 predicate places. [2021-03-24 13:41:26,869 INFO L480 AbstractCegarLoop]: Abstraction has has 443 places, 446 transitions, 18882 flow [2021-03-24 13:41:26,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:26,869 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:26,869 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:26,869 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-03-24 13:41:26,869 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:26,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:26,869 INFO L82 PathProgramCache]: Analyzing trace with hash 761602482, now seen corresponding path program 90 times [2021-03-24 13:41:26,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:26,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962179920] [2021-03-24 13:41:26,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:26,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:26,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:26,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:26,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:26,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:26,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:26,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:26,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:41:26,893 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:41:26,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:41:26,906 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:26,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:26,923 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:26,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:26,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:26,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962179920] [2021-03-24 13:41:26,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:26,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:26,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451126378] [2021-03-24 13:41:26,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:26,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:26,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:26,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:26,941 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:26,941 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 446 transitions, 18882 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:26,941 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:26,941 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:26,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:27,624 INFO L129 PetriNetUnfolder]: 217/2646 cut-off events. [2021-03-24 13:41:27,625 INFO L130 PetriNetUnfolder]: For 126688/127274 co-relation queries the response was YES. [2021-03-24 13:41:27,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23294 conditions, 2646 events. 217/2646 cut-off events. For 126688/127274 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 36976 event pairs, 53 based on Foata normal form. 17/2568 useless extension candidates. Maximal degree in co-relation 23153. Up to 430 conditions per place. [2021-03-24 13:41:27,655 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 277 selfloop transitions, 160 changer transitions 2/453 dead transitions. [2021-03-24 13:41:27,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 453 transitions, 20002 flow [2021-03-24 13:41:27,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:27,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:27,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:27,656 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:27,656 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:27,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:27,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:27,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:27,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:27,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:27,657 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:27,657 INFO L185 Difference]: Start difference. First operand has 443 places, 446 transitions, 18882 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:27,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 453 transitions, 20002 flow [2021-03-24 13:41:28,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 453 transitions, 19656 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 13:41:28,424 INFO L241 Difference]: Finished difference. Result has 448 places, 445 transitions, 18865 flow [2021-03-24 13:41:28,425 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18536, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18865, PETRI_PLACES=448, PETRI_TRANSITIONS=445} [2021-03-24 13:41:28,425 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 410 predicate places. [2021-03-24 13:41:28,425 INFO L480 AbstractCegarLoop]: Abstraction has has 448 places, 445 transitions, 18865 flow [2021-03-24 13:41:28,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:28,425 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:28,425 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:28,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-03-24 13:41:28,425 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:28,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:28,425 INFO L82 PathProgramCache]: Analyzing trace with hash -2064237220, now seen corresponding path program 91 times [2021-03-24 13:41:28,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:28,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103351480] [2021-03-24 13:41:28,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:28,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:28,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:28,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:28,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:28,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:28,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:28,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:28,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:41:28,450 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:41:28,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:41:28,463 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:28,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:28,480 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:28,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:28,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:28,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103351480] [2021-03-24 13:41:28,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:28,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:28,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401403702] [2021-03-24 13:41:28,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:28,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:28,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:28,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:28,498 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:28,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 445 transitions, 18865 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:28,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:28,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:28,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:29,188 INFO L129 PetriNetUnfolder]: 216/2636 cut-off events. [2021-03-24 13:41:29,188 INFO L130 PetriNetUnfolder]: For 131168/131762 co-relation queries the response was YES. [2021-03-24 13:41:29,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23531 conditions, 2636 events. 216/2636 cut-off events. For 131168/131762 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 36801 event pairs, 53 based on Foata normal form. 16/2557 useless extension candidates. Maximal degree in co-relation 23388. Up to 430 conditions per place. [2021-03-24 13:41:29,271 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 278 selfloop transitions, 157 changer transitions 2/451 dead transitions. [2021-03-24 13:41:29,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 451 transitions, 19941 flow [2021-03-24 13:41:29,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:29,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:29,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:29,272 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:29,272 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:29,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:29,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:29,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:29,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:29,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:29,273 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:29,273 INFO L185 Difference]: Start difference. First operand has 448 places, 445 transitions, 18865 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:29,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 451 transitions, 19941 flow [2021-03-24 13:41:30,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 451 transitions, 19786 flow, removed 9 selfloop flow, removed 3 redundant places. [2021-03-24 13:41:30,013 INFO L241 Difference]: Finished difference. Result has 452 places, 443 transitions, 18930 flow [2021-03-24 13:41:30,014 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18718, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18930, PETRI_PLACES=452, PETRI_TRANSITIONS=443} [2021-03-24 13:41:30,014 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 414 predicate places. [2021-03-24 13:41:30,014 INFO L480 AbstractCegarLoop]: Abstraction has has 452 places, 443 transitions, 18930 flow [2021-03-24 13:41:30,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:30,014 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:30,014 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:30,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-03-24 13:41:30,014 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:30,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:30,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1829114546, now seen corresponding path program 92 times [2021-03-24 13:41:30,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:30,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433129218] [2021-03-24 13:41:30,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:30,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:30,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:30,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:30,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:30,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:30,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:30,030 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:41:30,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:41:30,040 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:41:30,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:41:30,053 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:30,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:30,070 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:30,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:30,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:30,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433129218] [2021-03-24 13:41:30,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:30,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:30,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970356153] [2021-03-24 13:41:30,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:30,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:30,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:30,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:30,088 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:30,088 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 443 transitions, 18930 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:30,088 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:30,088 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:30,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:30,778 INFO L129 PetriNetUnfolder]: 215/2626 cut-off events. [2021-03-24 13:41:30,778 INFO L130 PetriNetUnfolder]: For 131334/131918 co-relation queries the response was YES. [2021-03-24 13:41:30,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23648 conditions, 2626 events. 215/2626 cut-off events. For 131334/131918 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 36654 event pairs, 53 based on Foata normal form. 16/2547 useless extension candidates. Maximal degree in co-relation 23505. Up to 430 conditions per place. [2021-03-24 13:41:30,809 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 254 selfloop transitions, 181 changer transitions 0/449 dead transitions. [2021-03-24 13:41:30,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 449 transitions, 20002 flow [2021-03-24 13:41:30,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:30,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:30,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:30,810 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:30,810 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:30,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:30,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:30,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:30,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:30,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:30,811 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:30,811 INFO L185 Difference]: Start difference. First operand has 452 places, 443 transitions, 18930 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:30,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 449 transitions, 20002 flow [2021-03-24 13:41:31,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 449 transitions, 19745 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-24 13:41:31,616 INFO L241 Difference]: Finished difference. Result has 455 places, 443 transitions, 19046 flow [2021-03-24 13:41:31,616 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18681, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19046, PETRI_PLACES=455, PETRI_TRANSITIONS=443} [2021-03-24 13:41:31,616 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 417 predicate places. [2021-03-24 13:41:31,616 INFO L480 AbstractCegarLoop]: Abstraction has has 455 places, 443 transitions, 19046 flow [2021-03-24 13:41:31,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:31,616 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:31,616 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:31,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-03-24 13:41:31,616 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:31,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:31,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1559176176, now seen corresponding path program 93 times [2021-03-24 13:41:31,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:31,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251560783] [2021-03-24 13:41:31,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:31,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:31,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:31,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:31,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:31,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:31,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:31,634 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:41:31,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:41:31,643 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:41:31,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:41:31,657 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:41:31,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:41:31,675 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:31,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:31,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:31,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251560783] [2021-03-24 13:41:31,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:31,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:31,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214987802] [2021-03-24 13:41:31,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:31,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:31,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:31,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:31,694 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:31,694 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 443 transitions, 19046 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:31,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:31,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:31,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:32,441 INFO L129 PetriNetUnfolder]: 215/2625 cut-off events. [2021-03-24 13:41:32,441 INFO L130 PetriNetUnfolder]: For 131262/131850 co-relation queries the response was YES. [2021-03-24 13:41:32,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23720 conditions, 2625 events. 215/2625 cut-off events. For 131262/131850 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 36664 event pairs, 53 based on Foata normal form. 17/2548 useless extension candidates. Maximal degree in co-relation 23577. Up to 430 conditions per place. [2021-03-24 13:41:32,468 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 244 selfloop transitions, 180 changer transitions 11/449 dead transitions. [2021-03-24 13:41:32,468 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 449 transitions, 20118 flow [2021-03-24 13:41:32,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:32,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:32,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:32,469 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:32,469 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:32,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:32,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:32,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:32,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:32,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:32,470 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:32,470 INFO L185 Difference]: Start difference. First operand has 455 places, 443 transitions, 19046 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:32,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 449 transitions, 20118 flow [2021-03-24 13:41:33,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 449 transitions, 19853 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 13:41:33,208 INFO L241 Difference]: Finished difference. Result has 460 places, 432 transitions, 18455 flow [2021-03-24 13:41:33,208 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18781, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18455, PETRI_PLACES=460, PETRI_TRANSITIONS=432} [2021-03-24 13:41:33,208 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 422 predicate places. [2021-03-24 13:41:33,208 INFO L480 AbstractCegarLoop]: Abstraction has has 460 places, 432 transitions, 18455 flow [2021-03-24 13:41:33,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:33,208 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:33,208 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:33,208 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-03-24 13:41:33,208 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:33,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:33,209 INFO L82 PathProgramCache]: Analyzing trace with hash 725537740, now seen corresponding path program 94 times [2021-03-24 13:41:33,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:33,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136199446] [2021-03-24 13:41:33,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:33,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:33,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:33,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:33,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:33,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:33,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:33,227 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:41:33,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:41:33,243 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:41:33,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:41:33,266 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:41:33,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:41:33,284 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:33,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:33,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:33,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136199446] [2021-03-24 13:41:33,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:33,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:33,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796917524] [2021-03-24 13:41:33,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:33,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:33,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:33,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:33,302 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:33,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 432 transitions, 18455 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:33,302 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:33,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:33,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:33,980 INFO L129 PetriNetUnfolder]: 214/2582 cut-off events. [2021-03-24 13:41:33,980 INFO L130 PetriNetUnfolder]: For 131332/131928 co-relation queries the response was YES. [2021-03-24 13:41:34,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23501 conditions, 2582 events. 214/2582 cut-off events. For 131332/131928 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 35827 event pairs, 53 based on Foata normal form. 17/2506 useless extension candidates. Maximal degree in co-relation 23357. Up to 430 conditions per place. [2021-03-24 13:41:34,013 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 269 selfloop transitions, 153 changer transitions 2/438 dead transitions. [2021-03-24 13:41:34,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 438 transitions, 19513 flow [2021-03-24 13:41:34,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:34,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:34,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:34,014 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:34,014 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:34,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:34,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:34,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:34,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:34,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:34,015 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:34,015 INFO L185 Difference]: Start difference. First operand has 460 places, 432 transitions, 18455 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:34,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 438 transitions, 19513 flow [2021-03-24 13:41:34,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 438 transitions, 19021 flow, removed 33 selfloop flow, removed 13 redundant places. [2021-03-24 13:41:34,813 INFO L241 Difference]: Finished difference. Result has 449 places, 430 transitions, 18203 flow [2021-03-24 13:41:34,814 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18011, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18203, PETRI_PLACES=449, PETRI_TRANSITIONS=430} [2021-03-24 13:41:34,814 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 411 predicate places. [2021-03-24 13:41:34,814 INFO L480 AbstractCegarLoop]: Abstraction has has 449 places, 430 transitions, 18203 flow [2021-03-24 13:41:34,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:34,814 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:34,814 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:34,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-03-24 13:41:34,814 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:34,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:34,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1316103308, now seen corresponding path program 95 times [2021-03-24 13:41:34,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:34,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420336754] [2021-03-24 13:41:34,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:34,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:34,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:34,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:34,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:34,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:34,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:34,834 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:41:34,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:41:34,851 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:41:34,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:41:34,874 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:41:34,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:41:34,892 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:34,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:34,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420336754] [2021-03-24 13:41:34,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:34,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:34,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062742320] [2021-03-24 13:41:34,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:34,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:34,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:34,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:34,911 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:34,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 430 transitions, 18203 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:34,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:34,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:34,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:35,614 INFO L129 PetriNetUnfolder]: 213/2572 cut-off events. [2021-03-24 13:41:35,615 INFO L130 PetriNetUnfolder]: For 115421/116007 co-relation queries the response was YES. [2021-03-24 13:41:35,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22089 conditions, 2572 events. 213/2572 cut-off events. For 115421/116007 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 35616 event pairs, 53 based on Foata normal form. 17/2496 useless extension candidates. Maximal degree in co-relation 21951. Up to 430 conditions per place. [2021-03-24 13:41:35,642 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 261 selfloop transitions, 161 changer transitions 0/436 dead transitions. [2021-03-24 13:41:35,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 436 transitions, 19217 flow [2021-03-24 13:41:35,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:35,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:35,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:35,643 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:35,643 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:35,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:35,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:35,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:35,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:35,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:35,645 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:35,645 INFO L185 Difference]: Start difference. First operand has 449 places, 430 transitions, 18203 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:35,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 436 transitions, 19217 flow [2021-03-24 13:41:36,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 436 transitions, 19062 flow, removed 9 selfloop flow, removed 3 redundant places. [2021-03-24 13:41:36,339 INFO L241 Difference]: Finished difference. Result has 453 places, 430 transitions, 18381 flow [2021-03-24 13:41:36,339 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18056, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18381, PETRI_PLACES=453, PETRI_TRANSITIONS=430} [2021-03-24 13:41:36,339 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 415 predicate places. [2021-03-24 13:41:36,339 INFO L480 AbstractCegarLoop]: Abstraction has has 453 places, 430 transitions, 18381 flow [2021-03-24 13:41:36,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:36,339 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:36,339 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:36,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-03-24 13:41:36,340 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:36,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:36,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1402081080, now seen corresponding path program 96 times [2021-03-24 13:41:36,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:36,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174464340] [2021-03-24 13:41:36,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:36,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:36,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:36,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:36,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:36,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:36,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:36,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:36,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:41:36,367 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:41:36,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:41:36,381 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:41:36,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:41:36,398 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:36,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:36,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:36,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174464340] [2021-03-24 13:41:36,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:36,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:36,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472122215] [2021-03-24 13:41:36,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:36,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:36,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:36,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:36,416 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:36,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 430 transitions, 18381 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:36,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:36,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:36,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:37,061 INFO L129 PetriNetUnfolder]: 213/2571 cut-off events. [2021-03-24 13:41:37,061 INFO L130 PetriNetUnfolder]: For 116099/116693 co-relation queries the response was YES. [2021-03-24 13:41:37,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22286 conditions, 2571 events. 213/2571 cut-off events. For 116099/116693 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 35620 event pairs, 53 based on Foata normal form. 16/2494 useless extension candidates. Maximal degree in co-relation 22148. Up to 430 conditions per place. [2021-03-24 13:41:37,090 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 261 selfloop transitions, 158 changer transitions 3/436 dead transitions. [2021-03-24 13:41:37,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 436 transitions, 19395 flow [2021-03-24 13:41:37,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:37,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:37,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:37,093 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:37,093 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:37,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:37,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:37,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:37,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:37,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:37,094 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:37,094 INFO L185 Difference]: Start difference. First operand has 453 places, 430 transitions, 18381 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:37,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 436 transitions, 19395 flow [2021-03-24 13:41:37,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 436 transitions, 19079 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-03-24 13:41:37,776 INFO L241 Difference]: Finished difference. Result has 456 places, 427 transitions, 18198 flow [2021-03-24 13:41:37,776 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18065, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18198, PETRI_PLACES=456, PETRI_TRANSITIONS=427} [2021-03-24 13:41:37,776 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 418 predicate places. [2021-03-24 13:41:37,776 INFO L480 AbstractCegarLoop]: Abstraction has has 456 places, 427 transitions, 18198 flow [2021-03-24 13:41:37,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:37,776 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:37,776 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:37,776 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-03-24 13:41:37,777 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:37,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:37,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1800513136, now seen corresponding path program 97 times [2021-03-24 13:41:37,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:37,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260811553] [2021-03-24 13:41:37,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:37,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:37,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:37,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:37,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:37,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:37,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:37,792 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:41:37,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:41:37,808 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:41:37,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:41:37,821 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:37,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:37,838 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:37,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:37,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:37,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260811553] [2021-03-24 13:41:37,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:37,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:37,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233530475] [2021-03-24 13:41:37,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:37,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:37,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:37,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:37,855 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:37,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 427 transitions, 18198 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:37,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:37,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:37,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:38,491 INFO L129 PetriNetUnfolder]: 212/2555 cut-off events. [2021-03-24 13:41:38,492 INFO L130 PetriNetUnfolder]: For 116404/117002 co-relation queries the response was YES. [2021-03-24 13:41:38,516 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22410 conditions, 2555 events. 212/2555 cut-off events. For 116404/117002 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 35373 event pairs, 53 based on Foata normal form. 17/2481 useless extension candidates. Maximal degree in co-relation 22273. Up to 430 conditions per place. [2021-03-24 13:41:38,521 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 270 selfloop transitions, 147 changer transitions 2/433 dead transitions. [2021-03-24 13:41:38,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 433 transitions, 19214 flow [2021-03-24 13:41:38,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:38,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:38,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:38,522 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:38,522 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:38,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:38,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:38,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:38,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:38,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:38,523 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:38,523 INFO L185 Difference]: Start difference. First operand has 456 places, 427 transitions, 18198 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:38,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 433 transitions, 19214 flow [2021-03-24 13:41:39,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 433 transitions, 18899 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-03-24 13:41:39,204 INFO L241 Difference]: Finished difference. Result has 457 places, 426 transitions, 18173 flow [2021-03-24 13:41:39,204 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=17899, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18173, PETRI_PLACES=457, PETRI_TRANSITIONS=426} [2021-03-24 13:41:39,204 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 419 predicate places. [2021-03-24 13:41:39,204 INFO L480 AbstractCegarLoop]: Abstraction has has 457 places, 426 transitions, 18173 flow [2021-03-24 13:41:39,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:39,205 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:39,205 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:39,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-03-24 13:41:39,205 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:39,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:39,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1520729992, now seen corresponding path program 98 times [2021-03-24 13:41:39,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:39,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690564506] [2021-03-24 13:41:39,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:39,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:39,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:39,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:39,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:39,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:39,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:39,220 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:41:39,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:41:39,235 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:41:39,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:41:39,246 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:39,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:39,267 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:39,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:39,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:39,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690564506] [2021-03-24 13:41:39,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:39,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:39,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461159981] [2021-03-24 13:41:39,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:39,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:39,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:39,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:39,289 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:39,289 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 426 transitions, 18173 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:39,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:39,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:39,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:39,919 INFO L129 PetriNetUnfolder]: 211/2545 cut-off events. [2021-03-24 13:41:39,920 INFO L130 PetriNetUnfolder]: For 114436/115022 co-relation queries the response was YES. [2021-03-24 13:41:39,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22107 conditions, 2545 events. 211/2545 cut-off events. For 114436/115022 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 35228 event pairs, 53 based on Foata normal form. 17/2470 useless extension candidates. Maximal degree in co-relation 21970. Up to 430 conditions per place. [2021-03-24 13:41:39,948 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 270 selfloop transitions, 145 changer transitions 2/431 dead transitions. [2021-03-24 13:41:39,948 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 431 transitions, 19129 flow [2021-03-24 13:41:39,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:39,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:39,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:39,949 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:39,949 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:39,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:39,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:39,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:39,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:39,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:39,950 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:39,950 INFO L185 Difference]: Start difference. First operand has 457 places, 426 transitions, 18173 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:39,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 431 transitions, 19129 flow [2021-03-24 13:41:40,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 431 transitions, 18879 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-03-24 13:41:40,602 INFO L241 Difference]: Finished difference. Result has 460 places, 424 transitions, 18105 flow [2021-03-24 13:41:40,602 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=17931, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18105, PETRI_PLACES=460, PETRI_TRANSITIONS=424} [2021-03-24 13:41:40,602 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 422 predicate places. [2021-03-24 13:41:40,602 INFO L480 AbstractCegarLoop]: Abstraction has has 460 places, 424 transitions, 18105 flow [2021-03-24 13:41:40,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:40,603 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:40,603 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:40,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-03-24 13:41:40,603 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:40,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:40,603 INFO L82 PathProgramCache]: Analyzing trace with hash 844136788, now seen corresponding path program 99 times [2021-03-24 13:41:40,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:40,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048383788] [2021-03-24 13:41:40,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:40,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:40,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:40,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:40,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:40,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:40,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:40,626 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:41:40,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:41:40,644 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:41:40,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:41:40,667 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:40,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:40,687 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:40,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:40,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048383788] [2021-03-24 13:41:40,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:40,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:40,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597572512] [2021-03-24 13:41:40,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:40,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:40,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:40,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:40,705 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:40,705 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 424 transitions, 18105 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:40,705 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:40,705 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:40,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:41,331 INFO L129 PetriNetUnfolder]: 210/2535 cut-off events. [2021-03-24 13:41:41,331 INFO L130 PetriNetUnfolder]: For 113902/114498 co-relation queries the response was YES. [2021-03-24 13:41:41,355 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22095 conditions, 2535 events. 210/2535 cut-off events. For 113902/114498 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 35007 event pairs, 53 based on Foata normal form. 17/2460 useless extension candidates. Maximal degree in co-relation 21958. Up to 430 conditions per place. [2021-03-24 13:41:41,360 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 259 selfloop transitions, 152 changer transitions 4/429 dead transitions. [2021-03-24 13:41:41,360 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 429 transitions, 19057 flow [2021-03-24 13:41:41,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:41,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:41,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:41,361 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:41,361 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:41,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:41,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:41,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:41,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:41,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:41,362 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:41,362 INFO L185 Difference]: Start difference. First operand has 460 places, 424 transitions, 18105 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:41,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 429 transitions, 19057 flow [2021-03-24 13:41:42,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 429 transitions, 18667 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 13:41:42,014 INFO L241 Difference]: Finished difference. Result has 461 places, 420 transitions, 17776 flow [2021-03-24 13:41:42,014 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=17723, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17776, PETRI_PLACES=461, PETRI_TRANSITIONS=420} [2021-03-24 13:41:42,014 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 423 predicate places. [2021-03-24 13:41:42,014 INFO L480 AbstractCegarLoop]: Abstraction has has 461 places, 420 transitions, 17776 flow [2021-03-24 13:41:42,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:42,014 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:42,014 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:42,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-03-24 13:41:42,015 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:42,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:42,015 INFO L82 PathProgramCache]: Analyzing trace with hash 694686612, now seen corresponding path program 100 times [2021-03-24 13:41:42,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:42,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456689394] [2021-03-24 13:41:42,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:42,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:42,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:42,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:42,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:42,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:42,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:42,036 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:41:42,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:41:42,045 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:41:42,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:41:42,057 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:42,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:42,075 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:42,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:42,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:42,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456689394] [2021-03-24 13:41:42,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:42,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:42,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004086473] [2021-03-24 13:41:42,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:42,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:42,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:42,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:42,095 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:42,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 420 transitions, 17776 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:42,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:42,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:42,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:42,728 INFO L129 PetriNetUnfolder]: 209/2518 cut-off events. [2021-03-24 13:41:42,728 INFO L130 PetriNetUnfolder]: For 112012/112596 co-relation queries the response was YES. [2021-03-24 13:41:42,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21797 conditions, 2518 events. 209/2518 cut-off events. For 112012/112596 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 34719 event pairs, 53 based on Foata normal form. 16/2442 useless extension candidates. Maximal degree in co-relation 21660. Up to 430 conditions per place. [2021-03-24 13:41:42,757 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 280 selfloop transitions, 142 changer transitions 2/438 dead transitions. [2021-03-24 13:41:42,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 438 transitions, 19415 flow [2021-03-24 13:41:42,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:42,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:42,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:42,758 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:42,758 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:42,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:42,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:42,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:42,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:42,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:42,759 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:42,759 INFO L185 Difference]: Start difference. First operand has 461 places, 420 transitions, 17776 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:42,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 438 transitions, 19415 flow [2021-03-24 13:41:43,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 438 transitions, 19086 flow, removed 10 selfloop flow, removed 7 redundant places. [2021-03-24 13:41:43,462 INFO L241 Difference]: Finished difference. Result has 463 places, 427 transitions, 18253 flow [2021-03-24 13:41:43,462 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=17477, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18253, PETRI_PLACES=463, PETRI_TRANSITIONS=427} [2021-03-24 13:41:43,462 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 425 predicate places. [2021-03-24 13:41:43,462 INFO L480 AbstractCegarLoop]: Abstraction has has 463 places, 427 transitions, 18253 flow [2021-03-24 13:41:43,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:43,462 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:43,462 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:43,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-03-24 13:41:43,462 INFO L428 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:43,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:43,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1657388968, now seen corresponding path program 101 times [2021-03-24 13:41:43,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:43,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762946526] [2021-03-24 13:41:43,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:43,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:43,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:43,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:43,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:43,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:43,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:43,479 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:41:43,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:41:43,488 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:41:43,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:41:43,502 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:43,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:43,519 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:43,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:43,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:43,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762946526] [2021-03-24 13:41:43,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:43,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:43,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868726866] [2021-03-24 13:41:43,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:43,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:43,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:43,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:43,537 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:43,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 427 transitions, 18253 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:43,537 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:43,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:43,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:44,198 INFO L129 PetriNetUnfolder]: 208/2508 cut-off events. [2021-03-24 13:41:44,198 INFO L130 PetriNetUnfolder]: For 112698/113284 co-relation queries the response was YES. [2021-03-24 13:41:44,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21558 conditions, 2508 events. 208/2508 cut-off events. For 112698/113284 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 34591 event pairs, 53 based on Foata normal form. 16/2427 useless extension candidates. Maximal degree in co-relation 21419. Up to 430 conditions per place. [2021-03-24 13:41:44,229 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 277 selfloop transitions, 145 changer transitions 0/436 dead transitions. [2021-03-24 13:41:44,230 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 436 transitions, 19417 flow [2021-03-24 13:41:44,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:44,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:44,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:44,230 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:44,230 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:44,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:44,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:44,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:44,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:44,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:44,231 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:44,231 INFO L185 Difference]: Start difference. First operand has 463 places, 427 transitions, 18253 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:44,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 436 transitions, 19417 flow [2021-03-24 13:41:44,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 436 transitions, 19255 flow, removed 11 selfloop flow, removed 4 redundant places. [2021-03-24 13:41:45,003 INFO L241 Difference]: Finished difference. Result has 467 places, 428 transitions, 18463 flow [2021-03-24 13:41:45,003 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18099, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18463, PETRI_PLACES=467, PETRI_TRANSITIONS=428} [2021-03-24 13:41:45,004 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 429 predicate places. [2021-03-24 13:41:45,004 INFO L480 AbstractCegarLoop]: Abstraction has has 467 places, 428 transitions, 18463 flow [2021-03-24 13:41:45,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:45,004 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:45,004 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:45,004 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-03-24 13:41:45,004 INFO L428 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:45,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:45,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1912850298, now seen corresponding path program 102 times [2021-03-24 13:41:45,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:45,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119159497] [2021-03-24 13:41:45,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:45,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:45,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:45,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:45,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:45,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:45,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:45,020 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:41:45,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:41:45,028 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:41:45,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:41:45,042 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:45,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:45,062 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:45,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:45,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:45,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119159497] [2021-03-24 13:41:45,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:45,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:45,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14633085] [2021-03-24 13:41:45,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:45,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:45,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:45,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:45,083 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:45,083 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 428 transitions, 18463 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:45,083 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:45,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:45,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:45,751 INFO L129 PetriNetUnfolder]: 208/2507 cut-off events. [2021-03-24 13:41:45,751 INFO L130 PetriNetUnfolder]: For 113224/113822 co-relation queries the response was YES. [2021-03-24 13:41:45,777 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21733 conditions, 2507 events. 208/2507 cut-off events. For 113224/113822 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 34598 event pairs, 53 based on Foata normal form. 17/2427 useless extension candidates. Maximal degree in co-relation 21594. Up to 430 conditions per place. [2021-03-24 13:41:45,782 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 280 selfloop transitions, 141 changer transitions 1/436 dead transitions. [2021-03-24 13:41:45,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 436 transitions, 19562 flow [2021-03-24 13:41:45,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:45,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:45,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:45,783 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:45,783 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:45,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:45,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:45,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:45,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:45,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:45,784 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:45,784 INFO L185 Difference]: Start difference. First operand has 467 places, 428 transitions, 18463 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:45,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 436 transitions, 19562 flow [2021-03-24 13:41:46,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 436 transitions, 19184 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-24 13:41:46,496 INFO L241 Difference]: Finished difference. Result has 471 places, 428 transitions, 18381 flow [2021-03-24 13:41:46,497 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18089, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18381, PETRI_PLACES=471, PETRI_TRANSITIONS=428} [2021-03-24 13:41:46,497 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 433 predicate places. [2021-03-24 13:41:46,497 INFO L480 AbstractCegarLoop]: Abstraction has has 471 places, 428 transitions, 18381 flow [2021-03-24 13:41:46,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:46,497 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:46,497 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:46,497 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-03-24 13:41:46,497 INFO L428 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:46,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:46,497 INFO L82 PathProgramCache]: Analyzing trace with hash -905440104, now seen corresponding path program 103 times [2021-03-24 13:41:46,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:46,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076735745] [2021-03-24 13:41:46,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:46,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:46,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:46,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:46,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:46,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:46,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:46,516 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:41:46,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:41:46,526 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:41:46,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:41:46,539 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:46,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:46,556 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:46,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:46,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:46,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076735745] [2021-03-24 13:41:46,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:46,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:46,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042170219] [2021-03-24 13:41:46,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:46,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:46,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:46,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:46,574 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:46,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 428 transitions, 18381 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:46,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:46,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:46,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:47,234 INFO L129 PetriNetUnfolder]: 207/2498 cut-off events. [2021-03-24 13:41:47,235 INFO L130 PetriNetUnfolder]: For 115098/115691 co-relation queries the response was YES. [2021-03-24 13:41:47,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21786 conditions, 2498 events. 207/2498 cut-off events. For 115098/115691 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 34444 event pairs, 53 based on Foata normal form. 17/2418 useless extension candidates. Maximal degree in co-relation 21645. Up to 430 conditions per place. [2021-03-24 13:41:47,264 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 277 selfloop transitions, 140 changer transitions 4/435 dead transitions. [2021-03-24 13:41:47,264 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 435 transitions, 19432 flow [2021-03-24 13:41:47,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:47,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:47,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:47,265 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:47,265 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:47,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:47,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:47,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:47,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:47,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:47,266 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:47,266 INFO L185 Difference]: Start difference. First operand has 471 places, 428 transitions, 18381 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:47,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 435 transitions, 19432 flow [2021-03-24 13:41:47,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 435 transitions, 19285 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-03-24 13:41:47,979 INFO L241 Difference]: Finished difference. Result has 476 places, 426 transitions, 18405 flow [2021-03-24 13:41:47,979 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18242, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18405, PETRI_PLACES=476, PETRI_TRANSITIONS=426} [2021-03-24 13:41:47,979 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 438 predicate places. [2021-03-24 13:41:47,979 INFO L480 AbstractCegarLoop]: Abstraction has has 476 places, 426 transitions, 18405 flow [2021-03-24 13:41:47,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:47,979 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:47,979 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:47,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-03-24 13:41:47,980 INFO L428 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:47,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:47,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1374994720, now seen corresponding path program 104 times [2021-03-24 13:41:47,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:47,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237246697] [2021-03-24 13:41:47,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:47,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:47,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:47,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:47,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:47,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:47,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:47,996 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:41:47,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:41:48,005 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:41:48,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:41:48,017 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:48,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:48,034 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:48,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:48,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237246697] [2021-03-24 13:41:48,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:48,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:48,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38649905] [2021-03-24 13:41:48,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:48,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:48,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:48,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:48,052 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:48,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 426 transitions, 18405 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:48,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:48,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:48,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:48,674 INFO L129 PetriNetUnfolder]: 206/2481 cut-off events. [2021-03-24 13:41:48,674 INFO L130 PetriNetUnfolder]: For 114866/115469 co-relation queries the response was YES. [2021-03-24 13:41:48,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21796 conditions, 2481 events. 206/2481 cut-off events. For 114866/115469 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 34159 event pairs, 53 based on Foata normal form. 17/2401 useless extension candidates. Maximal degree in co-relation 21654. Up to 430 conditions per place. [2021-03-24 13:41:48,703 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 278 selfloop transitions, 137 changer transitions 2/431 dead transitions. [2021-03-24 13:41:48,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 431 transitions, 19358 flow [2021-03-24 13:41:48,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:48,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:48,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:48,704 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:48,704 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:48,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:48,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:48,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:48,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:48,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:48,704 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:48,705 INFO L185 Difference]: Start difference. First operand has 476 places, 426 transitions, 18405 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:48,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 431 transitions, 19358 flow [2021-03-24 13:41:49,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 431 transitions, 19006 flow, removed 11 selfloop flow, removed 8 redundant places. [2021-03-24 13:41:49,390 INFO L241 Difference]: Finished difference. Result has 475 places, 425 transitions, 18311 flow [2021-03-24 13:41:49,390 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18069, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18311, PETRI_PLACES=475, PETRI_TRANSITIONS=425} [2021-03-24 13:41:49,390 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 437 predicate places. [2021-03-24 13:41:49,390 INFO L480 AbstractCegarLoop]: Abstraction has has 475 places, 425 transitions, 18311 flow [2021-03-24 13:41:49,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:49,391 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:49,391 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:49,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-03-24 13:41:49,391 INFO L428 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:49,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:49,391 INFO L82 PathProgramCache]: Analyzing trace with hash 167645276, now seen corresponding path program 105 times [2021-03-24 13:41:49,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:49,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634234692] [2021-03-24 13:41:49,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:49,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:49,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:49,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:49,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:49,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:49,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:49,410 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:41:49,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:41:49,419 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:41:49,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:41:49,431 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:49,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:49,448 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:49,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:49,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:49,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634234692] [2021-03-24 13:41:49,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:49,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:49,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550682008] [2021-03-24 13:41:49,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:49,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:49,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:49,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:49,466 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:49,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 425 transitions, 18311 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:49,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:49,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:49,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:50,111 INFO L129 PetriNetUnfolder]: 205/2471 cut-off events. [2021-03-24 13:41:50,111 INFO L130 PetriNetUnfolder]: For 113225/113816 co-relation queries the response was YES. [2021-03-24 13:41:50,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21448 conditions, 2471 events. 205/2471 cut-off events. For 113225/113816 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 33960 event pairs, 53 based on Foata normal form. 16/2390 useless extension candidates. Maximal degree in co-relation 21307. Up to 430 conditions per place. [2021-03-24 13:41:50,140 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 277 selfloop transitions, 136 changer transitions 2/429 dead transitions. [2021-03-24 13:41:50,140 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 429 transitions, 19213 flow [2021-03-24 13:41:50,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:50,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:50,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:50,141 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:50,141 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:50,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:50,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:50,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:50,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:50,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:50,142 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:50,142 INFO L185 Difference]: Start difference. First operand has 475 places, 425 transitions, 18311 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:50,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 429 transitions, 19213 flow [2021-03-24 13:41:50,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 429 transitions, 18974 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-03-24 13:41:50,845 INFO L241 Difference]: Finished difference. Result has 478 places, 423 transitions, 18240 flow [2021-03-24 13:41:50,845 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18080, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18240, PETRI_PLACES=478, PETRI_TRANSITIONS=423} [2021-03-24 13:41:50,845 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 440 predicate places. [2021-03-24 13:41:50,845 INFO L480 AbstractCegarLoop]: Abstraction has has 478 places, 423 transitions, 18240 flow [2021-03-24 13:41:50,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:50,846 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:50,846 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:50,846 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-03-24 13:41:50,846 INFO L428 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:50,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:50,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1101702052, now seen corresponding path program 106 times [2021-03-24 13:41:50,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:50,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362288228] [2021-03-24 13:41:50,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:50,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:50,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:50,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:50,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:50,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:50,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:50,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:50,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:41:50,870 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-24 13:41:50,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 13:41:50,892 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:50,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:50,909 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:50,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:50,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:50,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362288228] [2021-03-24 13:41:50,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:50,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:50,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072877677] [2021-03-24 13:41:50,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:50,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:50,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:50,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:50,927 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:50,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 423 transitions, 18240 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:50,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:50,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:50,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:51,578 INFO L129 PetriNetUnfolder]: 204/2461 cut-off events. [2021-03-24 13:41:51,579 INFO L130 PetriNetUnfolder]: For 112831/113432 co-relation queries the response was YES. [2021-03-24 13:41:51,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21429 conditions, 2461 events. 204/2461 cut-off events. For 112831/113432 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 33848 event pairs, 53 based on Foata normal form. 16/2380 useless extension candidates. Maximal degree in co-relation 21288. Up to 417 conditions per place. [2021-03-24 13:41:51,607 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 288 selfloop transitions, 138 changer transitions 2/442 dead transitions. [2021-03-24 13:41:51,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 442 transitions, 19838 flow [2021-03-24 13:41:51,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:51,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:51,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:51,607 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:51,607 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:51,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:51,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:51,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:51,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:51,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:51,608 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:51,608 INFO L185 Difference]: Start difference. First operand has 478 places, 423 transitions, 18240 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:51,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 442 transitions, 19838 flow [2021-03-24 13:41:52,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 442 transitions, 19498 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 13:41:52,242 INFO L241 Difference]: Finished difference. Result has 479 places, 421 transitions, 18109 flow [2021-03-24 13:41:52,242 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=17938, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18109, PETRI_PLACES=479, PETRI_TRANSITIONS=421} [2021-03-24 13:41:52,242 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 441 predicate places. [2021-03-24 13:41:52,242 INFO L480 AbstractCegarLoop]: Abstraction has has 479 places, 421 transitions, 18109 flow [2021-03-24 13:41:52,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:52,243 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:52,243 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:52,243 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-03-24 13:41:52,244 INFO L428 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:52,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:52,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1253941404, now seen corresponding path program 107 times [2021-03-24 13:41:52,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:52,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005579272] [2021-03-24 13:41:52,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:52,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:52,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:52,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:52,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:52,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:52,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:52,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:52,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:41:52,271 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:41:52,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:41:52,283 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:52,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:52,299 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:52,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:52,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:52,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005579272] [2021-03-24 13:41:52,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:52,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:52,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059159446] [2021-03-24 13:41:52,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:52,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:52,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:52,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:52,317 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:52,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 421 transitions, 18109 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:52,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:52,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:52,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:52,958 INFO L129 PetriNetUnfolder]: 203/2451 cut-off events. [2021-03-24 13:41:52,958 INFO L130 PetriNetUnfolder]: For 112828/113442 co-relation queries the response was YES. [2021-03-24 13:41:52,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21332 conditions, 2451 events. 203/2451 cut-off events. For 112828/113442 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 33690 event pairs, 53 based on Foata normal form. 17/2371 useless extension candidates. Maximal degree in co-relation 21191. Up to 417 conditions per place. [2021-03-24 13:41:52,992 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 289 selfloop transitions, 135 changer transitions 2/440 dead transitions. [2021-03-24 13:41:52,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 440 transitions, 19673 flow [2021-03-24 13:41:52,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:52,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:52,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:52,993 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:52,993 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:52,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:52,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:52,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:52,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:52,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:52,994 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:52,994 INFO L185 Difference]: Start difference. First operand has 479 places, 421 transitions, 18109 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:52,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 440 transitions, 19673 flow [2021-03-24 13:41:53,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 440 transitions, 19461 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-03-24 13:41:53,757 INFO L241 Difference]: Finished difference. Result has 483 places, 424 transitions, 18365 flow [2021-03-24 13:41:53,758 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=17905, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18365, PETRI_PLACES=483, PETRI_TRANSITIONS=424} [2021-03-24 13:41:53,758 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 445 predicate places. [2021-03-24 13:41:53,758 INFO L480 AbstractCegarLoop]: Abstraction has has 483 places, 424 transitions, 18365 flow [2021-03-24 13:41:53,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:53,758 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:53,758 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:53,758 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-03-24 13:41:53,758 INFO L428 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:53,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:53,758 INFO L82 PathProgramCache]: Analyzing trace with hash -456671904, now seen corresponding path program 108 times [2021-03-24 13:41:53,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:53,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057247616] [2021-03-24 13:41:53,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:53,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:53,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:53,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:53,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:53,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:53,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:53,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:53,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:41:53,791 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:41:53,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:41:53,804 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:53,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:53,821 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:53,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:53,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:53,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057247616] [2021-03-24 13:41:53,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:53,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:53,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436394394] [2021-03-24 13:41:53,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:53,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:53,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:53,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:53,839 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:53,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 424 transitions, 18365 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:53,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:53,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:53,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:54,521 INFO L129 PetriNetUnfolder]: 202/2441 cut-off events. [2021-03-24 13:41:54,521 INFO L130 PetriNetUnfolder]: For 113818/114429 co-relation queries the response was YES. [2021-03-24 13:41:54,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21360 conditions, 2441 events. 202/2441 cut-off events. For 113818/114429 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 33492 event pairs, 53 based on Foata normal form. 17/2366 useless extension candidates. Maximal degree in co-relation 21218. Up to 417 conditions per place. [2021-03-24 13:41:54,549 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 286 selfloop transitions, 136 changer transitions 2/438 dead transitions. [2021-03-24 13:41:54,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 438 transitions, 19691 flow [2021-03-24 13:41:54,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:54,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:54,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:54,550 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:54,550 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:54,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:54,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:54,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:54,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:54,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:54,551 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:54,551 INFO L185 Difference]: Start difference. First operand has 483 places, 424 transitions, 18365 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:54,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 438 transitions, 19691 flow [2021-03-24 13:41:55,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 438 transitions, 19554 flow, removed 11 selfloop flow, removed 3 redundant places. [2021-03-24 13:41:55,261 INFO L241 Difference]: Finished difference. Result has 487 places, 422 transitions, 18403 flow [2021-03-24 13:41:55,261 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18236, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18403, PETRI_PLACES=487, PETRI_TRANSITIONS=422} [2021-03-24 13:41:55,261 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 449 predicate places. [2021-03-24 13:41:55,261 INFO L480 AbstractCegarLoop]: Abstraction has has 487 places, 422 transitions, 18403 flow [2021-03-24 13:41:55,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:55,261 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:55,261 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:55,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-03-24 13:41:55,261 INFO L428 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:55,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:55,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1967940512, now seen corresponding path program 109 times [2021-03-24 13:41:55,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:55,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439339119] [2021-03-24 13:41:55,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:55,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:55,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:55,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:55,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:55,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:55,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:55,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:55,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:41:55,285 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:41:55,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:41:55,299 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:55,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:55,316 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:55,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:55,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:55,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439339119] [2021-03-24 13:41:55,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:55,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:55,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412698847] [2021-03-24 13:41:55,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:55,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:55,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:55,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:55,334 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:55,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 422 transitions, 18403 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:55,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:55,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:55,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:55,974 INFO L129 PetriNetUnfolder]: 201/2431 cut-off events. [2021-03-24 13:41:55,975 INFO L130 PetriNetUnfolder]: For 114214/114849 co-relation queries the response was YES. [2021-03-24 13:41:56,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21471 conditions, 2431 events. 201/2431 cut-off events. For 114214/114849 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 33355 event pairs, 53 based on Foata normal form. 17/2361 useless extension candidates. Maximal degree in co-relation 21329. Up to 417 conditions per place. [2021-03-24 13:41:56,005 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 284 selfloop transitions, 138 changer transitions 0/436 dead transitions. [2021-03-24 13:41:56,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 436 transitions, 19725 flow [2021-03-24 13:41:56,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:56,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:56,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:56,006 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:56,006 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:56,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:56,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:56,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:56,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:56,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:56,007 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:56,007 INFO L185 Difference]: Start difference. First operand has 487 places, 422 transitions, 18403 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:56,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 436 transitions, 19725 flow [2021-03-24 13:41:56,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 436 transitions, 19463 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 13:41:56,790 INFO L241 Difference]: Finished difference. Result has 489 places, 422 transitions, 18428 flow [2021-03-24 13:41:56,790 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18149, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18428, PETRI_PLACES=489, PETRI_TRANSITIONS=422} [2021-03-24 13:41:56,790 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 451 predicate places. [2021-03-24 13:41:56,790 INFO L480 AbstractCegarLoop]: Abstraction has has 489 places, 422 transitions, 18428 flow [2021-03-24 13:41:56,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:56,791 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:56,791 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:56,791 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-03-24 13:41:56,791 INFO L428 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:56,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:56,791 INFO L82 PathProgramCache]: Analyzing trace with hash 109113996, now seen corresponding path program 110 times [2021-03-24 13:41:56,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:56,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448410306] [2021-03-24 13:41:56,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:56,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:56,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:56,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:56,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:56,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:56,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:56,810 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:41:56,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:41:56,820 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:41:56,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:41:56,833 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:56,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:56,855 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:56,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:56,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:56,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448410306] [2021-03-24 13:41:56,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:56,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:56,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461980450] [2021-03-24 13:41:56,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:56,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:56,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:56,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:56,873 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:56,873 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 422 transitions, 18428 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:56,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:56,873 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:56,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:57,579 INFO L129 PetriNetUnfolder]: 201/2430 cut-off events. [2021-03-24 13:41:57,579 INFO L130 PetriNetUnfolder]: For 114034/114634 co-relation queries the response was YES. [2021-03-24 13:41:57,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21481 conditions, 2430 events. 201/2430 cut-off events. For 114034/114634 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 33314 event pairs, 53 based on Foata normal form. 16/2350 useless extension candidates. Maximal degree in co-relation 21339. Up to 417 conditions per place. [2021-03-24 13:41:57,605 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 284 selfloop transitions, 137 changer transitions 1/436 dead transitions. [2021-03-24 13:41:57,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 436 transitions, 19750 flow [2021-03-24 13:41:57,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:57,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:57,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:57,606 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:57,606 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:57,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:57,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:57,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:57,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:57,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:57,607 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:57,607 INFO L185 Difference]: Start difference. First operand has 489 places, 422 transitions, 18428 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:57,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 436 transitions, 19750 flow [2021-03-24 13:41:58,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 436 transitions, 19498 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-03-24 13:41:58,272 INFO L241 Difference]: Finished difference. Result has 494 places, 431 transitions, 18905 flow [2021-03-24 13:41:58,272 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18176, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18905, PETRI_PLACES=494, PETRI_TRANSITIONS=431} [2021-03-24 13:41:58,273 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 456 predicate places. [2021-03-24 13:41:58,273 INFO L480 AbstractCegarLoop]: Abstraction has has 494 places, 431 transitions, 18905 flow [2021-03-24 13:41:58,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:58,273 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:58,273 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:58,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-03-24 13:41:58,273 INFO L428 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:58,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:58,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1919120356, now seen corresponding path program 111 times [2021-03-24 13:41:58,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:58,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171485691] [2021-03-24 13:41:58,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:58,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:58,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:58,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:58,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:58,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:58,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:58,290 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:41:58,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:41:58,299 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:41:58,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:41:58,312 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:58,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:58,330 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:58,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:58,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:58,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171485691] [2021-03-24 13:41:58,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:58,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:58,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351459948] [2021-03-24 13:41:58,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:58,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:58,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:58,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:58,348 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:58,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 431 transitions, 18905 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:58,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:58,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:58,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:59,023 INFO L129 PetriNetUnfolder]: 200/2421 cut-off events. [2021-03-24 13:41:59,023 INFO L130 PetriNetUnfolder]: For 117598/118207 co-relation queries the response was YES. [2021-03-24 13:41:59,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21809 conditions, 2421 events. 200/2421 cut-off events. For 117598/118207 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 33204 event pairs, 53 based on Foata normal form. 16/2349 useless extension candidates. Maximal degree in co-relation 21666. Up to 417 conditions per place. [2021-03-24 13:41:59,055 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 284 selfloop transitions, 135 changer transitions 2/435 dead transitions. [2021-03-24 13:41:59,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 435 transitions, 19827 flow [2021-03-24 13:41:59,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:59,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:59,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:41:59,056 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:41:59,056 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:41:59,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:41:59,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:59,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:41:59,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:59,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:59,057 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:59,057 INFO L185 Difference]: Start difference. First operand has 494 places, 431 transitions, 18905 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:41:59,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 435 transitions, 19827 flow [2021-03-24 13:41:59,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 435 transitions, 19628 flow, removed 20 selfloop flow, removed 5 redundant places. [2021-03-24 13:41:59,780 INFO L241 Difference]: Finished difference. Result has 496 places, 429 transitions, 18871 flow [2021-03-24 13:41:59,781 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18714, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18871, PETRI_PLACES=496, PETRI_TRANSITIONS=429} [2021-03-24 13:41:59,781 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 458 predicate places. [2021-03-24 13:41:59,781 INFO L480 AbstractCegarLoop]: Abstraction has has 496 places, 429 transitions, 18871 flow [2021-03-24 13:41:59,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:59,781 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:59,781 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:59,781 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-03-24 13:41:59,781 INFO L428 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:41:59,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:59,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1582324286, now seen corresponding path program 112 times [2021-03-24 13:41:59,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:59,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27048255] [2021-03-24 13:41:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:59,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:59,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:41:59,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:59,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:59,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:59,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:59,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:59,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:41:59,806 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:41:59,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:41:59,820 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:41:59,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:41:59,838 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:41:59,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:41:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:59,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27048255] [2021-03-24 13:41:59,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:59,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:59,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139961323] [2021-03-24 13:41:59,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:59,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:59,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:59,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:59,857 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:41:59,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 429 transitions, 18871 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:59,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:59,857 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:41:59,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:00,518 INFO L129 PetriNetUnfolder]: 199/2411 cut-off events. [2021-03-24 13:42:00,518 INFO L130 PetriNetUnfolder]: For 116166/116780 co-relation queries the response was YES. [2021-03-24 13:42:00,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21880 conditions, 2411 events. 199/2411 cut-off events. For 116166/116780 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 32996 event pairs, 53 based on Foata normal form. 17/2331 useless extension candidates. Maximal degree in co-relation 21739. Up to 417 conditions per place. [2021-03-24 13:42:00,550 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 283 selfloop transitions, 133 changer transitions 3/433 dead transitions. [2021-03-24 13:42:00,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 433 transitions, 19789 flow [2021-03-24 13:42:00,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:00,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:00,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:00,551 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:00,551 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:00,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:00,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:00,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:00,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:00,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:00,552 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:00,552 INFO L185 Difference]: Start difference. First operand has 496 places, 429 transitions, 18871 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:00,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 433 transitions, 19789 flow [2021-03-24 13:42:01,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 433 transitions, 19527 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 13:42:01,294 INFO L241 Difference]: Finished difference. Result has 498 places, 426 transitions, 18704 flow [2021-03-24 13:42:01,294 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18617, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18704, PETRI_PLACES=498, PETRI_TRANSITIONS=426} [2021-03-24 13:42:01,294 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 460 predicate places. [2021-03-24 13:42:01,294 INFO L480 AbstractCegarLoop]: Abstraction has has 498 places, 426 transitions, 18704 flow [2021-03-24 13:42:01,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:01,295 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:01,295 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:01,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-03-24 13:42:01,295 INFO L428 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:01,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:01,295 INFO L82 PathProgramCache]: Analyzing trace with hash 308179398, now seen corresponding path program 113 times [2021-03-24 13:42:01,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:01,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478268881] [2021-03-24 13:42:01,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:01,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:01,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:01,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:01,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:01,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:01,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:01,314 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:01,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:01,323 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:01,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:01,337 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:01,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:01,364 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:01,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:01,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:01,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478268881] [2021-03-24 13:42:01,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:01,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:01,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025042338] [2021-03-24 13:42:01,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:01,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:01,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:01,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:01,382 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:01,382 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 426 transitions, 18704 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:01,382 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:01,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:01,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:02,019 INFO L129 PetriNetUnfolder]: 198/2395 cut-off events. [2021-03-24 13:42:02,019 INFO L130 PetriNetUnfolder]: For 115088/115696 co-relation queries the response was YES. [2021-03-24 13:42:02,043 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21717 conditions, 2395 events. 198/2395 cut-off events. For 115088/115696 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 32767 event pairs, 53 based on Foata normal form. 17/2317 useless extension candidates. Maximal degree in co-relation 21576. Up to 417 conditions per place. [2021-03-24 13:42:02,048 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 280 selfloop transitions, 136 changer transitions 0/430 dead transitions. [2021-03-24 13:42:02,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 430 transitions, 19616 flow [2021-03-24 13:42:02,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:02,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:02,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:02,049 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:02,049 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:02,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:02,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:02,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:02,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:02,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:02,049 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:02,049 INFO L185 Difference]: Start difference. First operand has 498 places, 426 transitions, 18704 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:02,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 430 transitions, 19616 flow [2021-03-24 13:42:02,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 430 transitions, 19343 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-03-24 13:42:02,794 INFO L241 Difference]: Finished difference. Result has 498 places, 426 transitions, 18722 flow [2021-03-24 13:42:02,794 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18447, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18722, PETRI_PLACES=498, PETRI_TRANSITIONS=426} [2021-03-24 13:42:02,794 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 460 predicate places. [2021-03-24 13:42:02,794 INFO L480 AbstractCegarLoop]: Abstraction has has 498 places, 426 transitions, 18722 flow [2021-03-24 13:42:02,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:02,794 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:02,794 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:02,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-03-24 13:42:02,794 INFO L428 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:02,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:02,795 INFO L82 PathProgramCache]: Analyzing trace with hash -852842716, now seen corresponding path program 114 times [2021-03-24 13:42:02,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:02,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601567118] [2021-03-24 13:42:02,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:02,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:02,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:02,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:02,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:02,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:02,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:02,810 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:02,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:02,820 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:42:02,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:42:02,832 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:02,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:02,849 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:02,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:02,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:02,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601567118] [2021-03-24 13:42:02,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:02,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:02,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169312239] [2021-03-24 13:42:02,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:02,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:02,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:02,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:02,866 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:02,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 426 transitions, 18722 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:02,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:02,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:02,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:03,503 INFO L129 PetriNetUnfolder]: 198/2394 cut-off events. [2021-03-24 13:42:03,503 INFO L130 PetriNetUnfolder]: For 112880/113513 co-relation queries the response was YES. [2021-03-24 13:42:03,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21482 conditions, 2394 events. 198/2394 cut-off events. For 112880/113513 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 32691 event pairs, 53 based on Foata normal form. 16/2314 useless extension candidates. Maximal degree in co-relation 21342. Up to 417 conditions per place. [2021-03-24 13:42:03,531 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 279 selfloop transitions, 135 changer transitions 2/430 dead transitions. [2021-03-24 13:42:03,532 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 430 transitions, 19626 flow [2021-03-24 13:42:03,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:03,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:03,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:03,532 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:03,532 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:03,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:03,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:03,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:03,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:03,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:03,533 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:03,533 INFO L185 Difference]: Start difference. First operand has 498 places, 426 transitions, 18722 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:03,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 430 transitions, 19626 flow [2021-03-24 13:42:04,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 430 transitions, 19509 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-24 13:42:04,288 INFO L241 Difference]: Finished difference. Result has 504 places, 424 transitions, 18761 flow [2021-03-24 13:42:04,288 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18605, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18761, PETRI_PLACES=504, PETRI_TRANSITIONS=424} [2021-03-24 13:42:04,288 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 466 predicate places. [2021-03-24 13:42:04,288 INFO L480 AbstractCegarLoop]: Abstraction has has 504 places, 424 transitions, 18761 flow [2021-03-24 13:42:04,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:04,289 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:04,289 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:04,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-03-24 13:42:04,289 INFO L428 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:04,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:04,289 INFO L82 PathProgramCache]: Analyzing trace with hash -108140218, now seen corresponding path program 115 times [2021-03-24 13:42:04,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:04,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112991574] [2021-03-24 13:42:04,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:04,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:04,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:04,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:04,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:04,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:04,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:04,305 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:04,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:04,314 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:42:04,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:42:04,327 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:04,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:04,344 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:04,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:04,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112991574] [2021-03-24 13:42:04,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:04,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:04,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000560303] [2021-03-24 13:42:04,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:04,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:04,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:04,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:04,362 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:04,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 424 transitions, 18761 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:04,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:04,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:04,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:04,998 INFO L129 PetriNetUnfolder]: 197/2384 cut-off events. [2021-03-24 13:42:04,998 INFO L130 PetriNetUnfolder]: For 115165/115765 co-relation queries the response was YES. [2021-03-24 13:42:05,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21823 conditions, 2384 events. 197/2384 cut-off events. For 115165/115765 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 32535 event pairs, 53 based on Foata normal form. 16/2313 useless extension candidates. Maximal degree in co-relation 21682. Up to 417 conditions per place. [2021-03-24 13:42:05,027 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 277 selfloop transitions, 135 changer transitions 2/428 dead transitions. [2021-03-24 13:42:05,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 428 transitions, 19669 flow [2021-03-24 13:42:05,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:05,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:05,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:05,028 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:05,028 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:05,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:05,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:05,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:05,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:05,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:05,029 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:05,029 INFO L185 Difference]: Start difference. First operand has 504 places, 424 transitions, 18761 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:05,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 428 transitions, 19669 flow [2021-03-24 13:42:05,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 428 transitions, 19410 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-03-24 13:42:05,727 INFO L241 Difference]: Finished difference. Result has 505 places, 422 transitions, 18667 flow [2021-03-24 13:42:05,727 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18510, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18667, PETRI_PLACES=505, PETRI_TRANSITIONS=422} [2021-03-24 13:42:05,727 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 467 predicate places. [2021-03-24 13:42:05,728 INFO L480 AbstractCegarLoop]: Abstraction has has 505 places, 422 transitions, 18667 flow [2021-03-24 13:42:05,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:05,728 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:05,728 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:05,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-03-24 13:42:05,728 INFO L428 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:05,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:05,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1925928096, now seen corresponding path program 116 times [2021-03-24 13:42:05,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:05,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578115703] [2021-03-24 13:42:05,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:05,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:05,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:05,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:05,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:05,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:05,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:05,743 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:05,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:05,753 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:05,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:05,766 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:05,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:05,783 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:05,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:05,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:05,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578115703] [2021-03-24 13:42:05,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:05,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:05,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794192183] [2021-03-24 13:42:05,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:05,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:05,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:05,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:05,801 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:05,801 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 422 transitions, 18667 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:05,801 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:05,801 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:05,801 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:06,442 INFO L129 PetriNetUnfolder]: 196/2374 cut-off events. [2021-03-24 13:42:06,442 INFO L130 PetriNetUnfolder]: For 113643/114254 co-relation queries the response was YES. [2021-03-24 13:42:06,469 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21793 conditions, 2374 events. 196/2374 cut-off events. For 113643/114254 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 32429 event pairs, 53 based on Foata normal form. 17/2295 useless extension candidates. Maximal degree in co-relation 21654. Up to 417 conditions per place. [2021-03-24 13:42:06,474 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 277 selfloop transitions, 131 changer transitions 4/426 dead transitions. [2021-03-24 13:42:06,474 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 426 transitions, 19571 flow [2021-03-24 13:42:06,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:06,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:06,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:06,475 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:06,475 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:06,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:06,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:06,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:06,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,476 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,476 INFO L185 Difference]: Start difference. First operand has 505 places, 422 transitions, 18667 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:06,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 426 transitions, 19571 flow [2021-03-24 13:42:07,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 426 transitions, 19311 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 13:42:07,227 INFO L241 Difference]: Finished difference. Result has 507 places, 418 transitions, 18437 flow [2021-03-24 13:42:07,228 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18415, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18437, PETRI_PLACES=507, PETRI_TRANSITIONS=418} [2021-03-24 13:42:07,228 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 469 predicate places. [2021-03-24 13:42:07,228 INFO L480 AbstractCegarLoop]: Abstraction has has 507 places, 418 transitions, 18437 flow [2021-03-24 13:42:07,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:07,228 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:07,228 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:07,228 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-03-24 13:42:07,228 INFO L428 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:07,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:07,228 INFO L82 PathProgramCache]: Analyzing trace with hash 2030153214, now seen corresponding path program 117 times [2021-03-24 13:42:07,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:07,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886692076] [2021-03-24 13:42:07,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:07,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:07,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:07,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:07,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:07,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:07,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:07,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:07,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:42:07,254 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:07,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:07,268 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:07,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:07,288 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:07,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:07,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886692076] [2021-03-24 13:42:07,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:07,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:07,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012314620] [2021-03-24 13:42:07,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:07,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:07,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:07,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:07,310 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:07,310 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 418 transitions, 18437 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:07,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:07,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:07,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:07,918 INFO L129 PetriNetUnfolder]: 195/2357 cut-off events. [2021-03-24 13:42:07,918 INFO L130 PetriNetUnfolder]: For 112504/113118 co-relation queries the response was YES. [2021-03-24 13:42:07,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21621 conditions, 2357 events. 195/2357 cut-off events. For 112504/113118 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 32145 event pairs, 53 based on Foata normal form. 17/2279 useless extension candidates. Maximal degree in co-relation 21482. Up to 417 conditions per place. [2021-03-24 13:42:07,945 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 280 selfloop transitions, 127 changer transitions 1/422 dead transitions. [2021-03-24 13:42:07,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 422 transitions, 19333 flow [2021-03-24 13:42:07,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:07,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:07,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:07,946 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:07,946 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:07,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:07,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:07,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:07,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:07,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:07,947 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:07,947 INFO L185 Difference]: Start difference. First operand has 507 places, 418 transitions, 18437 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:07,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 422 transitions, 19333 flow [2021-03-24 13:42:08,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 422 transitions, 19116 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-03-24 13:42:08,630 INFO L241 Difference]: Finished difference. Result has 508 places, 417 transitions, 18427 flow [2021-03-24 13:42:08,630 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18236, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18427, PETRI_PLACES=508, PETRI_TRANSITIONS=417} [2021-03-24 13:42:08,630 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 470 predicate places. [2021-03-24 13:42:08,630 INFO L480 AbstractCegarLoop]: Abstraction has has 508 places, 417 transitions, 18427 flow [2021-03-24 13:42:08,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:08,630 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:08,630 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:08,631 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-03-24 13:42:08,631 INFO L428 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:08,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:08,631 INFO L82 PathProgramCache]: Analyzing trace with hash 297676294, now seen corresponding path program 118 times [2021-03-24 13:42:08,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:08,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302863273] [2021-03-24 13:42:08,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:08,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:08,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:08,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:08,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:08,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:08,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:08,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:08,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:42:08,655 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:42:08,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:42:08,667 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:08,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:08,684 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:08,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:08,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:08,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302863273] [2021-03-24 13:42:08,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:08,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:08,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365203565] [2021-03-24 13:42:08,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:08,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:08,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:08,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:08,701 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:08,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 417 transitions, 18427 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:08,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:08,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:08,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:09,301 INFO L129 PetriNetUnfolder]: 194/2348 cut-off events. [2021-03-24 13:42:09,301 INFO L130 PetriNetUnfolder]: For 110130/110730 co-relation queries the response was YES. [2021-03-24 13:42:09,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21411 conditions, 2348 events. 194/2348 cut-off events. For 110130/110730 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 31937 event pairs, 53 based on Foata normal form. 16/2268 useless extension candidates. Maximal degree in co-relation 21273. Up to 417 conditions per place. [2021-03-24 13:42:09,328 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 281 selfloop transitions, 126 changer transitions 0/421 dead transitions. [2021-03-24 13:42:09,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 421 transitions, 19313 flow [2021-03-24 13:42:09,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:09,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:09,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:09,329 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:09,330 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:09,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:09,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:09,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:09,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:09,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:09,330 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:09,330 INFO L185 Difference]: Start difference. First operand has 508 places, 417 transitions, 18427 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:09,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 421 transitions, 19313 flow [2021-03-24 13:42:10,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 421 transitions, 19020 flow, removed 11 selfloop flow, removed 6 redundant places. [2021-03-24 13:42:10,042 INFO L241 Difference]: Finished difference. Result has 509 places, 417 transitions, 18397 flow [2021-03-24 13:42:10,042 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18142, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18397, PETRI_PLACES=509, PETRI_TRANSITIONS=417} [2021-03-24 13:42:10,042 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 471 predicate places. [2021-03-24 13:42:10,042 INFO L480 AbstractCegarLoop]: Abstraction has has 509 places, 417 transitions, 18397 flow [2021-03-24 13:42:10,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:10,042 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:10,042 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:10,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-03-24 13:42:10,043 INFO L428 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:10,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:10,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1613833598, now seen corresponding path program 119 times [2021-03-24 13:42:10,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:10,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662234395] [2021-03-24 13:42:10,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:10,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:10,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:10,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:10,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:10,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:10,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:10,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:10,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:42:10,067 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:42:10,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:42:10,079 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:10,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:10,097 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:10,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:10,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:10,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662234395] [2021-03-24 13:42:10,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:10,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:10,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114595799] [2021-03-24 13:42:10,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:10,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:10,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:10,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:10,117 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:10,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 417 transitions, 18397 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:10,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:10,118 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:10,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:10,725 INFO L129 PetriNetUnfolder]: 194/2347 cut-off events. [2021-03-24 13:42:10,725 INFO L130 PetriNetUnfolder]: For 109073/109682 co-relation queries the response was YES. [2021-03-24 13:42:10,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21396 conditions, 2347 events. 194/2347 cut-off events. For 109073/109682 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 32008 event pairs, 53 based on Foata normal form. 16/2276 useless extension candidates. Maximal degree in co-relation 21259. Up to 417 conditions per place. [2021-03-24 13:42:10,752 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 280 selfloop transitions, 122 changer transitions 5/421 dead transitions. [2021-03-24 13:42:10,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 421 transitions, 19283 flow [2021-03-24 13:42:10,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:10,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:10,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:10,753 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:10,753 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:10,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:10,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:10,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:10,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:10,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:10,754 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:10,754 INFO L185 Difference]: Start difference. First operand has 509 places, 417 transitions, 18397 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:10,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 421 transitions, 19283 flow [2021-03-24 13:42:11,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 421 transitions, 19030 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-03-24 13:42:11,429 INFO L241 Difference]: Finished difference. Result has 512 places, 412 transitions, 18093 flow [2021-03-24 13:42:11,429 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18144, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18093, PETRI_PLACES=512, PETRI_TRANSITIONS=412} [2021-03-24 13:42:11,429 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 474 predicate places. [2021-03-24 13:42:11,429 INFO L480 AbstractCegarLoop]: Abstraction has has 512 places, 412 transitions, 18093 flow [2021-03-24 13:42:11,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:11,429 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:11,429 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:11,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-03-24 13:42:11,429 INFO L428 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:11,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:11,429 INFO L82 PathProgramCache]: Analyzing trace with hash -775409086, now seen corresponding path program 120 times [2021-03-24 13:42:11,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:11,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132236823] [2021-03-24 13:42:11,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:11,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:11,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:11,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:11,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:11,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:11,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:11,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:11,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:42:11,453 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:11,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:11,468 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:11,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:11,485 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:11,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:11,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132236823] [2021-03-24 13:42:11,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:11,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:11,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305737944] [2021-03-24 13:42:11,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:11,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:11,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:11,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:11,502 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:11,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 412 transitions, 18093 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:11,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:11,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:11,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:12,091 INFO L129 PetriNetUnfolder]: 193/2330 cut-off events. [2021-03-24 13:42:12,091 INFO L130 PetriNetUnfolder]: For 109040/109682 co-relation queries the response was YES. [2021-03-24 13:42:12,113 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21479 conditions, 2330 events. 193/2330 cut-off events. For 109040/109682 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 31695 event pairs, 53 based on Foata normal form. 17/2251 useless extension candidates. Maximal degree in co-relation 21343. Up to 417 conditions per place. [2021-03-24 13:42:12,118 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 278 selfloop transitions, 122 changer transitions 2/416 dead transitions. [2021-03-24 13:42:12,118 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 416 transitions, 18977 flow [2021-03-24 13:42:12,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:12,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:12,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:12,119 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:12,119 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:12,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:12,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:12,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:12,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:12,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:12,120 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:12,120 INFO L185 Difference]: Start difference. First operand has 512 places, 412 transitions, 18093 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:12,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 416 transitions, 18977 flow [2021-03-24 13:42:12,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 416 transitions, 18728 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-03-24 13:42:12,805 INFO L241 Difference]: Finished difference. Result has 512 places, 410 transitions, 17980 flow [2021-03-24 13:42:12,805 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=17860, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17980, PETRI_PLACES=512, PETRI_TRANSITIONS=410} [2021-03-24 13:42:12,806 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 474 predicate places. [2021-03-24 13:42:12,806 INFO L480 AbstractCegarLoop]: Abstraction has has 512 places, 410 transitions, 17980 flow [2021-03-24 13:42:12,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:12,806 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:12,806 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:12,806 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-03-24 13:42:12,806 INFO L428 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:12,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:12,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1381899694, now seen corresponding path program 121 times [2021-03-24 13:42:12,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:12,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969422628] [2021-03-24 13:42:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:12,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:12,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:12,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:12,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:12,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:12,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:12,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:12,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:42:12,832 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-24 13:42:12,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 13:42:12,854 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:12,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:12,871 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:12,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:12,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:12,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969422628] [2021-03-24 13:42:12,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:12,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:12,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035088916] [2021-03-24 13:42:12,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:12,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:12,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:12,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:12,888 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:12,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 410 transitions, 17980 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:12,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:12,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:12,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:13,502 INFO L129 PetriNetUnfolder]: 192/2320 cut-off events. [2021-03-24 13:42:13,503 INFO L130 PetriNetUnfolder]: For 106359/106974 co-relation queries the response was YES. [2021-03-24 13:42:13,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21178 conditions, 2320 events. 192/2320 cut-off events. For 106359/106974 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 31533 event pairs, 53 based on Foata normal form. 17/2242 useless extension candidates. Maximal degree in co-relation 21043. Up to 417 conditions per place. [2021-03-24 13:42:13,526 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 278 selfloop transitions, 120 changer transitions 2/414 dead transitions. [2021-03-24 13:42:13,526 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 414 transitions, 18852 flow [2021-03-24 13:42:13,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:13,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:13,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:13,527 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:13,527 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:13,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:13,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:13,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:13,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:13,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:13,528 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:13,528 INFO L185 Difference]: Start difference. First operand has 512 places, 410 transitions, 17980 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:13,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 414 transitions, 18852 flow [2021-03-24 13:42:14,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 414 transitions, 18654 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-03-24 13:42:14,180 INFO L241 Difference]: Finished difference. Result has 515 places, 408 transitions, 17903 flow [2021-03-24 13:42:14,180 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=17790, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17903, PETRI_PLACES=515, PETRI_TRANSITIONS=408} [2021-03-24 13:42:14,180 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 477 predicate places. [2021-03-24 13:42:14,180 INFO L480 AbstractCegarLoop]: Abstraction has has 515 places, 408 transitions, 17903 flow [2021-03-24 13:42:14,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:14,180 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:14,181 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:14,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-03-24 13:42:14,181 INFO L428 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:14,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:14,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1112061114, now seen corresponding path program 122 times [2021-03-24 13:42:14,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:14,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721152607] [2021-03-24 13:42:14,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:14,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:14,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:14,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:14,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:14,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:14,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:14,197 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:14,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:14,206 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:14,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:14,220 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:14,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:14,237 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:14,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:14,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:14,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721152607] [2021-03-24 13:42:14,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:14,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:14,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674543609] [2021-03-24 13:42:14,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:14,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:14,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:14,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:14,255 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:14,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 408 transitions, 17903 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:14,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:14,255 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:14,255 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:14,840 INFO L129 PetriNetUnfolder]: 191/2310 cut-off events. [2021-03-24 13:42:14,840 INFO L130 PetriNetUnfolder]: For 106059/106699 co-relation queries the response was YES. [2021-03-24 13:42:14,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21158 conditions, 2310 events. 191/2310 cut-off events. For 106059/106699 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 31398 event pairs, 53 based on Foata normal form. 16/2230 useless extension candidates. Maximal degree in co-relation 21023. Up to 417 conditions per place. [2021-03-24 13:42:14,867 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 256 selfloop transitions, 142 changer transitions 0/412 dead transitions. [2021-03-24 13:42:14,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 412 transitions, 18771 flow [2021-03-24 13:42:14,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:14,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:14,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:14,868 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:14,868 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:14,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:14,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:14,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:14,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:14,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:14,869 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:14,869 INFO L185 Difference]: Start difference. First operand has 515 places, 408 transitions, 17903 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:14,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 412 transitions, 18771 flow [2021-03-24 13:42:15,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 412 transitions, 18533 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 13:42:15,569 INFO L241 Difference]: Finished difference. Result has 517 places, 408 transitions, 17960 flow [2021-03-24 13:42:15,569 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=17673, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17960, PETRI_PLACES=517, PETRI_TRANSITIONS=408} [2021-03-24 13:42:15,569 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 479 predicate places. [2021-03-24 13:42:15,569 INFO L480 AbstractCegarLoop]: Abstraction has has 517 places, 408 transitions, 17960 flow [2021-03-24 13:42:15,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:15,569 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:15,569 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:15,569 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-03-24 13:42:15,569 INFO L428 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:15,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:15,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1034109646, now seen corresponding path program 123 times [2021-03-24 13:42:15,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:15,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735908982] [2021-03-24 13:42:15,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:15,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:15,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:15,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:15,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:15,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:15,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:15,586 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:15,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:15,595 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:15,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:15,608 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:15,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:15,626 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:15,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:15,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735908982] [2021-03-24 13:42:15,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:15,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:15,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943281] [2021-03-24 13:42:15,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:15,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:15,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:15,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:15,643 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:15,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 408 transitions, 17960 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:15,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:15,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:15,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:16,264 INFO L129 PetriNetUnfolder]: 191/2309 cut-off events. [2021-03-24 13:42:16,265 INFO L130 PetriNetUnfolder]: For 105819/106426 co-relation queries the response was YES. [2021-03-24 13:42:16,288 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21158 conditions, 2309 events. 191/2309 cut-off events. For 105819/106426 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 31351 event pairs, 53 based on Foata normal form. 16/2238 useless extension candidates. Maximal degree in co-relation 21023. Up to 417 conditions per place. [2021-03-24 13:42:16,293 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 258 selfloop transitions, 140 changer transitions 0/412 dead transitions. [2021-03-24 13:42:16,293 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 412 transitions, 18828 flow [2021-03-24 13:42:16,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:16,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:16,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:16,294 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:16,294 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:16,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:16,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:16,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:16,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:16,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:16,295 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:16,295 INFO L185 Difference]: Start difference. First operand has 517 places, 408 transitions, 17960 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:16,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 412 transitions, 18828 flow [2021-03-24 13:42:17,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 412 transitions, 18562 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-03-24 13:42:17,010 INFO L241 Difference]: Finished difference. Result has 521 places, 408 transitions, 17977 flow [2021-03-24 13:42:17,010 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=17694, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17977, PETRI_PLACES=521, PETRI_TRANSITIONS=408} [2021-03-24 13:42:17,010 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 483 predicate places. [2021-03-24 13:42:17,010 INFO L480 AbstractCegarLoop]: Abstraction has has 521 places, 408 transitions, 17977 flow [2021-03-24 13:42:17,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:17,010 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:17,010 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:17,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-03-24 13:42:17,011 INFO L428 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:17,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:17,011 INFO L82 PathProgramCache]: Analyzing trace with hash -785912190, now seen corresponding path program 124 times [2021-03-24 13:42:17,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:17,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867283571] [2021-03-24 13:42:17,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:17,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:17,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:17,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:17,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:17,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:17,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:17,028 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:17,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:17,038 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:17,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:17,052 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:17,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:17,070 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:17,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:17,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867283571] [2021-03-24 13:42:17,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:17,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:17,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177254211] [2021-03-24 13:42:17,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:17,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:17,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:17,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:17,089 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:17,089 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 408 transitions, 17977 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:17,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:17,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:17,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:17,703 INFO L129 PetriNetUnfolder]: 191/2308 cut-off events. [2021-03-24 13:42:17,703 INFO L130 PetriNetUnfolder]: For 107845/108463 co-relation queries the response was YES. [2021-03-24 13:42:17,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21388 conditions, 2308 events. 191/2308 cut-off events. For 107845/108463 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 31363 event pairs, 53 based on Foata normal form. 17/2229 useless extension candidates. Maximal degree in co-relation 21252. Up to 417 conditions per place. [2021-03-24 13:42:17,730 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 259 selfloop transitions, 139 changer transitions 0/412 dead transitions. [2021-03-24 13:42:17,730 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 412 transitions, 18853 flow [2021-03-24 13:42:17,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:17,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:17,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:17,731 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:17,731 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:17,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:17,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:17,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:17,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:17,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:17,732 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:17,732 INFO L185 Difference]: Start difference. First operand has 521 places, 408 transitions, 17977 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:17,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 412 transitions, 18853 flow [2021-03-24 13:42:18,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 412 transitions, 18643 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-03-24 13:42:18,437 INFO L241 Difference]: Finished difference. Result has 526 places, 408 transitions, 18048 flow [2021-03-24 13:42:18,437 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=17767, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18048, PETRI_PLACES=526, PETRI_TRANSITIONS=408} [2021-03-24 13:42:18,437 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 488 predicate places. [2021-03-24 13:42:18,437 INFO L480 AbstractCegarLoop]: Abstraction has has 526 places, 408 transitions, 18048 flow [2021-03-24 13:42:18,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:18,437 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:18,437 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:18,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-03-24 13:42:18,438 INFO L428 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:18,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:18,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1080695844, now seen corresponding path program 125 times [2021-03-24 13:42:18,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:18,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508214702] [2021-03-24 13:42:18,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:18,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:18,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:18,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:18,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:18,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:18,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:18,453 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:18,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:18,461 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:42:18,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:42:18,473 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:18,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:18,489 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:18,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:18,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:18,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508214702] [2021-03-24 13:42:18,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:18,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:18,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030638667] [2021-03-24 13:42:18,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:18,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:18,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:18,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:18,513 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:18,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 408 transitions, 18048 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:18,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:18,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:18,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:19,117 INFO L129 PetriNetUnfolder]: 191/2307 cut-off events. [2021-03-24 13:42:19,117 INFO L130 PetriNetUnfolder]: For 110210/110852 co-relation queries the response was YES. [2021-03-24 13:42:19,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21657 conditions, 2307 events. 191/2307 cut-off events. For 110210/110852 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 31310 event pairs, 53 based on Foata normal form. 17/2229 useless extension candidates. Maximal degree in co-relation 21520. Up to 417 conditions per place. [2021-03-24 13:42:19,144 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 260 selfloop transitions, 138 changer transitions 0/412 dead transitions. [2021-03-24 13:42:19,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 412 transitions, 18932 flow [2021-03-24 13:42:19,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:19,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:19,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:19,144 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:19,145 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:19,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:19,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:19,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:19,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:19,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:19,145 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:19,145 INFO L185 Difference]: Start difference. First operand has 526 places, 408 transitions, 18048 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:19,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 412 transitions, 18932 flow [2021-03-24 13:42:19,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 412 transitions, 18672 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-03-24 13:42:19,865 INFO L241 Difference]: Finished difference. Result has 530 places, 408 transitions, 18067 flow [2021-03-24 13:42:19,866 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=17788, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18067, PETRI_PLACES=530, PETRI_TRANSITIONS=408} [2021-03-24 13:42:19,866 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 492 predicate places. [2021-03-24 13:42:19,866 INFO L480 AbstractCegarLoop]: Abstraction has has 530 places, 408 transitions, 18067 flow [2021-03-24 13:42:19,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:19,866 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:19,866 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:19,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-03-24 13:42:19,866 INFO L428 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:19,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:19,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1898114148, now seen corresponding path program 126 times [2021-03-24 13:42:19,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:19,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823784656] [2021-03-24 13:42:19,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:19,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:19,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:19,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:19,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:19,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:19,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:19,882 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:19,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:19,892 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:42:19,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:42:19,904 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:19,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:19,922 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:19,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:19,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823784656] [2021-03-24 13:42:19,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:19,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:19,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620370287] [2021-03-24 13:42:19,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:19,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:19,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:19,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:19,940 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:19,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 408 transitions, 18067 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:19,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:19,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:19,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:20,521 INFO L129 PetriNetUnfolder]: 191/2306 cut-off events. [2021-03-24 13:42:20,522 INFO L130 PetriNetUnfolder]: For 112439/113046 co-relation queries the response was YES. [2021-03-24 13:42:20,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21884 conditions, 2306 events. 191/2306 cut-off events. For 112439/113046 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 31307 event pairs, 53 based on Foata normal form. 16/2226 useless extension candidates. Maximal degree in co-relation 21746. Up to 417 conditions per place. [2021-03-24 13:42:20,551 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 255 selfloop transitions, 129 changer transitions 14/412 dead transitions. [2021-03-24 13:42:20,551 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 412 transitions, 18959 flow [2021-03-24 13:42:20,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:20,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:20,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:20,552 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:20,552 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:20,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:20,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:20,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:20,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:20,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:20,553 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:20,553 INFO L185 Difference]: Start difference. First operand has 530 places, 408 transitions, 18067 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:20,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 412 transitions, 18959 flow [2021-03-24 13:42:21,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 412 transitions, 18753 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-03-24 13:42:21,253 INFO L241 Difference]: Finished difference. Result has 535 places, 394 transitions, 17230 flow [2021-03-24 13:42:21,254 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=17861, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17230, PETRI_PLACES=535, PETRI_TRANSITIONS=394} [2021-03-24 13:42:21,254 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 497 predicate places. [2021-03-24 13:42:21,254 INFO L480 AbstractCegarLoop]: Abstraction has has 535 places, 394 transitions, 17230 flow [2021-03-24 13:42:21,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:21,254 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:21,254 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:21,254 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-03-24 13:42:21,254 INFO L428 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:21,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:21,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1316046012, now seen corresponding path program 127 times [2021-03-24 13:42:21,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:21,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226841619] [2021-03-24 13:42:21,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:21,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:21,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:21,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:21,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:21,264 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:21,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:21,272 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:21,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:21,281 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:42:21,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:42:21,293 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:21,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:21,315 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:21,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:21,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:21,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226841619] [2021-03-24 13:42:21,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:21,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:21,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873889405] [2021-03-24 13:42:21,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:21,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:21,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:21,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:21,335 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:21,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 394 transitions, 17230 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:21,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:21,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:21,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:21,886 INFO L129 PetriNetUnfolder]: 190/2228 cut-off events. [2021-03-24 13:42:21,886 INFO L130 PetriNetUnfolder]: For 103308/103562 co-relation queries the response was YES. [2021-03-24 13:42:21,907 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20333 conditions, 2228 events. 190/2228 cut-off events. For 103308/103562 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 30120 event pairs, 17 based on Foata normal form. 19/2176 useless extension candidates. Maximal degree in co-relation 20194. Up to 501 conditions per place. [2021-03-24 13:42:21,912 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 243 selfloop transitions, 170 changer transitions 0/427 dead transitions. [2021-03-24 13:42:21,912 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 427 transitions, 19363 flow [2021-03-24 13:42:21,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:21,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:21,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:21,913 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:21,913 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:21,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:21,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:21,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:21,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:21,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:21,914 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:21,914 INFO L185 Difference]: Start difference. First operand has 535 places, 394 transitions, 17230 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:21,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 427 transitions, 19363 flow [2021-03-24 13:42:22,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 427 transitions, 18888 flow, removed 30 selfloop flow, removed 11 redundant places. [2021-03-24 13:42:22,538 INFO L241 Difference]: Finished difference. Result has 529 places, 408 transitions, 17891 flow [2021-03-24 13:42:22,538 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=16821, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17891, PETRI_PLACES=529, PETRI_TRANSITIONS=408} [2021-03-24 13:42:22,538 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 491 predicate places. [2021-03-24 13:42:22,538 INFO L480 AbstractCegarLoop]: Abstraction has has 529 places, 408 transitions, 17891 flow [2021-03-24 13:42:22,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:22,539 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:22,539 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:22,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-03-24 13:42:22,539 INFO L428 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:22,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:22,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1564582166, now seen corresponding path program 128 times [2021-03-24 13:42:22,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:22,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678655571] [2021-03-24 13:42:22,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:22,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:22,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:22,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:22,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:22,551 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:22,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:22,557 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:22,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:22,566 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:42:22,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:42:22,580 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:42:22,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:42:22,597 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:22,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:22,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678655571] [2021-03-24 13:42:22,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:22,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:22,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370245697] [2021-03-24 13:42:22,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:22,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:22,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:22,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:22,615 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:22,615 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 408 transitions, 17891 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:22,615 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:22,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:22,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:23,177 INFO L129 PetriNetUnfolder]: 190/2227 cut-off events. [2021-03-24 13:42:23,177 INFO L130 PetriNetUnfolder]: For 92409/92640 co-relation queries the response was YES. [2021-03-24 13:42:23,196 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19318 conditions, 2227 events. 190/2227 cut-off events. For 92409/92640 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 30161 event pairs, 17 based on Foata normal form. 16/2172 useless extension candidates. Maximal degree in co-relation 19181. Up to 501 conditions per place. [2021-03-24 13:42:23,200 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 242 selfloop transitions, 171 changer transitions 0/427 dead transitions. [2021-03-24 13:42:23,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 427 transitions, 19351 flow [2021-03-24 13:42:23,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:23,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:23,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:23,201 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:23,201 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:23,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:23,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:23,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:23,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:23,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:23,202 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:23,202 INFO L185 Difference]: Start difference. First operand has 529 places, 408 transitions, 17891 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:23,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 427 transitions, 19351 flow [2021-03-24 13:42:23,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 427 transitions, 18942 flow, removed 75 selfloop flow, removed 3 redundant places. [2021-03-24 13:42:23,817 INFO L241 Difference]: Finished difference. Result has 534 places, 408 transitions, 17827 flow [2021-03-24 13:42:23,817 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=17482, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17827, PETRI_PLACES=534, PETRI_TRANSITIONS=408} [2021-03-24 13:42:23,817 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 496 predicate places. [2021-03-24 13:42:23,817 INFO L480 AbstractCegarLoop]: Abstraction has has 534 places, 408 transitions, 17827 flow [2021-03-24 13:42:23,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:23,817 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:23,817 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:23,817 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-03-24 13:42:23,818 INFO L428 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:23,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:23,818 INFO L82 PathProgramCache]: Analyzing trace with hash 102568800, now seen corresponding path program 129 times [2021-03-24 13:42:23,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:23,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871504099] [2021-03-24 13:42:23,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:23,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:23,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:23,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:23,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:23,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:23,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:23,837 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:23,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:23,854 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:42:23,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:42:23,868 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:42:23,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:42:23,886 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:23,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:23,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:23,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871504099] [2021-03-24 13:42:23,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:23,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:23,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288356508] [2021-03-24 13:42:23,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:23,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:23,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:23,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:23,904 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:23,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 408 transitions, 17827 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:23,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:23,905 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:23,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:24,554 INFO L129 PetriNetUnfolder]: 221/2581 cut-off events. [2021-03-24 13:42:24,555 INFO L130 PetriNetUnfolder]: For 102195/102426 co-relation queries the response was YES. [2021-03-24 13:42:24,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21615 conditions, 2581 events. 221/2581 cut-off events. For 102195/102426 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 35765 event pairs, 17 based on Foata normal form. 4/2512 useless extension candidates. Maximal degree in co-relation 21477. Up to 470 conditions per place. [2021-03-24 13:42:24,585 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 300 selfloop transitions, 184 changer transitions 2/500 dead transitions. [2021-03-24 13:42:24,585 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 500 transitions, 22155 flow [2021-03-24 13:42:24,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:24,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:24,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:24,586 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:24,586 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:24,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:24,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:24,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:24,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:24,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:24,587 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:24,587 INFO L185 Difference]: Start difference. First operand has 534 places, 408 transitions, 17827 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:24,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 500 transitions, 22155 flow [2021-03-24 13:42:25,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 500 transitions, 21836 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 13:42:25,310 INFO L241 Difference]: Finished difference. Result has 544 places, 438 transitions, 19511 flow [2021-03-24 13:42:25,310 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=17567, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19511, PETRI_PLACES=544, PETRI_TRANSITIONS=438} [2021-03-24 13:42:25,310 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 506 predicate places. [2021-03-24 13:42:25,310 INFO L480 AbstractCegarLoop]: Abstraction has has 544 places, 438 transitions, 19511 flow [2021-03-24 13:42:25,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:25,310 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:25,310 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:25,310 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-03-24 13:42:25,310 INFO L428 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:25,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:25,311 INFO L82 PathProgramCache]: Analyzing trace with hash 75720428, now seen corresponding path program 130 times [2021-03-24 13:42:25,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:25,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161286709] [2021-03-24 13:42:25,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:25,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:25,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:25,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:25,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:25,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:25,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:25,327 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:25,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:25,342 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:25,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:25,362 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:42:25,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:42:25,381 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:25,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:25,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:25,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161286709] [2021-03-24 13:42:25,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:25,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:25,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722457316] [2021-03-24 13:42:25,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:25,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:25,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:25,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:25,400 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:25,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 438 transitions, 19511 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:25,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:25,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:25,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:26,213 INFO L129 PetriNetUnfolder]: 241/2939 cut-off events. [2021-03-24 13:42:26,213 INFO L130 PetriNetUnfolder]: For 124453/124699 co-relation queries the response was YES. [2021-03-24 13:42:26,240 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24726 conditions, 2939 events. 241/2939 cut-off events. For 124453/124699 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 42155 event pairs, 14 based on Foata normal form. 4/2858 useless extension candidates. Maximal degree in co-relation 24582. Up to 541 conditions per place. [2021-03-24 13:42:26,245 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 314 selfloop transitions, 213 changer transitions 2/543 dead transitions. [2021-03-24 13:42:26,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 543 transitions, 24518 flow [2021-03-24 13:42:26,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:26,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:26,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:26,246 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:26,246 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:26,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:26,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:26,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:26,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:26,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:26,247 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:26,247 INFO L185 Difference]: Start difference. First operand has 544 places, 438 transitions, 19511 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:26,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 543 transitions, 24518 flow [2021-03-24 13:42:27,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 543 transitions, 24234 flow, removed 87 selfloop flow, removed 3 redundant places. [2021-03-24 13:42:27,074 INFO L241 Difference]: Finished difference. Result has 553 places, 462 transitions, 20981 flow [2021-03-24 13:42:27,074 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=19296, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=20981, PETRI_PLACES=553, PETRI_TRANSITIONS=462} [2021-03-24 13:42:27,074 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 515 predicate places. [2021-03-24 13:42:27,074 INFO L480 AbstractCegarLoop]: Abstraction has has 553 places, 462 transitions, 20981 flow [2021-03-24 13:42:27,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:27,074 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:27,074 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:27,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-03-24 13:42:27,074 INFO L428 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:27,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:27,074 INFO L82 PathProgramCache]: Analyzing trace with hash -827442216, now seen corresponding path program 131 times [2021-03-24 13:42:27,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:27,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814372383] [2021-03-24 13:42:27,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:27,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:27,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:27,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:27,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:27,088 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:27,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:27,094 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:27,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:27,104 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:27,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:27,118 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:27,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:27,134 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:27,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:27,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:27,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814372383] [2021-03-24 13:42:27,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:27,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:27,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497513014] [2021-03-24 13:42:27,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:27,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:27,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:27,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:27,152 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:27,152 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 462 transitions, 20981 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:27,152 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:27,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:27,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:27,947 INFO L129 PetriNetUnfolder]: 240/2934 cut-off events. [2021-03-24 13:42:27,947 INFO L130 PetriNetUnfolder]: For 130891/131145 co-relation queries the response was YES. [2021-03-24 13:42:27,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25213 conditions, 2934 events. 240/2934 cut-off events. For 130891/131145 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 42062 event pairs, 15 based on Foata normal form. 19/2861 useless extension candidates. Maximal degree in co-relation 25065. Up to 584 conditions per place. [2021-03-24 13:42:27,983 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 279 selfloop transitions, 195 changer transitions 0/488 dead transitions. [2021-03-24 13:42:27,983 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 488 transitions, 22838 flow [2021-03-24 13:42:27,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:27,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:27,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:27,984 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:27,984 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:27,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:27,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:27,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:27,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:27,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:27,985 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:27,985 INFO L185 Difference]: Start difference. First operand has 553 places, 462 transitions, 20981 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:27,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 488 transitions, 22838 flow [2021-03-24 13:42:28,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 488 transitions, 22682 flow, removed 41 selfloop flow, removed 3 redundant places. [2021-03-24 13:42:28,920 INFO L241 Difference]: Finished difference. Result has 558 places, 463 transitions, 21315 flow [2021-03-24 13:42:28,921 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=20839, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=21315, PETRI_PLACES=558, PETRI_TRANSITIONS=463} [2021-03-24 13:42:28,921 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 520 predicate places. [2021-03-24 13:42:28,921 INFO L480 AbstractCegarLoop]: Abstraction has has 558 places, 463 transitions, 21315 flow [2021-03-24 13:42:28,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:28,921 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:28,921 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:28,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-03-24 13:42:28,921 INFO L428 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:28,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:28,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1282858920, now seen corresponding path program 132 times [2021-03-24 13:42:28,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:28,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466597232] [2021-03-24 13:42:28,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:28,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:28,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:28,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:28,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:28,931 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:28,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:28,938 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:28,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:28,947 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:28,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:28,961 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:42:28,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:42:28,978 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:28,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:28,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:28,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466597232] [2021-03-24 13:42:28,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:28,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:28,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389988145] [2021-03-24 13:42:28,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:28,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:28,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:28,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:28,996 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:28,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 463 transitions, 21315 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:28,997 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:28,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:28,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:29,789 INFO L129 PetriNetUnfolder]: 240/2933 cut-off events. [2021-03-24 13:42:29,790 INFO L130 PetriNetUnfolder]: For 131469/131823 co-relation queries the response was YES. [2021-03-24 13:42:29,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25460 conditions, 2933 events. 240/2933 cut-off events. For 131469/131823 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 42083 event pairs, 15 based on Foata normal form. 19/2855 useless extension candidates. Maximal degree in co-relation 25312. Up to 584 conditions per place. [2021-03-24 13:42:29,826 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 280 selfloop transitions, 194 changer transitions 0/488 dead transitions. [2021-03-24 13:42:29,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 488 transitions, 23108 flow [2021-03-24 13:42:29,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:29,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:29,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:29,827 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:29,827 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:29,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:29,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:29,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:29,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:29,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:29,828 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:29,828 INFO L185 Difference]: Start difference. First operand has 558 places, 463 transitions, 21315 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:29,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 488 transitions, 23108 flow [2021-03-24 13:42:30,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 488 transitions, 22721 flow, removed 14 selfloop flow, removed 5 redundant places. [2021-03-24 13:42:30,732 INFO L241 Difference]: Finished difference. Result has 561 places, 463 transitions, 21319 flow [2021-03-24 13:42:30,732 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=20928, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=21319, PETRI_PLACES=561, PETRI_TRANSITIONS=463} [2021-03-24 13:42:30,732 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 523 predicate places. [2021-03-24 13:42:30,732 INFO L480 AbstractCegarLoop]: Abstraction has has 561 places, 463 transitions, 21319 flow [2021-03-24 13:42:30,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:30,732 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:30,732 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:30,732 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-03-24 13:42:30,732 INFO L428 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:30,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:30,732 INFO L82 PathProgramCache]: Analyzing trace with hash -766335344, now seen corresponding path program 133 times [2021-03-24 13:42:30,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:30,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695283897] [2021-03-24 13:42:30,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:30,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:30,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:30,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:30,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:30,748 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:30,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:30,754 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:30,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:30,764 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:30,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:30,778 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:30,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:30,795 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:30,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:30,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:30,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695283897] [2021-03-24 13:42:30,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:30,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:30,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577049619] [2021-03-24 13:42:30,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:30,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:30,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:30,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:30,813 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:30,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 463 transitions, 21319 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:30,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:30,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:30,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:31,613 INFO L129 PetriNetUnfolder]: 240/2932 cut-off events. [2021-03-24 13:42:31,613 INFO L130 PetriNetUnfolder]: For 134094/134438 co-relation queries the response was YES. [2021-03-24 13:42:31,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25746 conditions, 2932 events. 240/2932 cut-off events. For 134094/134438 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 42078 event pairs, 15 based on Foata normal form. 16/2851 useless extension candidates. Maximal degree in co-relation 25597. Up to 584 conditions per place. [2021-03-24 13:42:31,653 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 284 selfloop transitions, 190 changer transitions 0/488 dead transitions. [2021-03-24 13:42:31,653 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 488 transitions, 23120 flow [2021-03-24 13:42:31,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:31,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:31,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:31,654 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:31,654 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:31,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:31,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:31,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:31,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:31,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:31,655 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:31,655 INFO L185 Difference]: Start difference. First operand has 561 places, 463 transitions, 21319 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:31,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 488 transitions, 23120 flow [2021-03-24 13:42:32,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 488 transitions, 22752 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-24 13:42:32,603 INFO L241 Difference]: Finished difference. Result has 565 places, 466 transitions, 21542 flow [2021-03-24 13:42:32,603 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=20951, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=21542, PETRI_PLACES=565, PETRI_TRANSITIONS=466} [2021-03-24 13:42:32,603 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 527 predicate places. [2021-03-24 13:42:32,603 INFO L480 AbstractCegarLoop]: Abstraction has has 565 places, 466 transitions, 21542 flow [2021-03-24 13:42:32,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:32,603 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:32,603 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:32,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-03-24 13:42:32,603 INFO L428 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:32,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:32,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1503569646, now seen corresponding path program 134 times [2021-03-24 13:42:32,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:32,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837023453] [2021-03-24 13:42:32,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:32,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:32,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:32,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:32,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:32,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:32,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:32,619 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:42:32,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:42:32,634 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:32,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:32,652 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:42:32,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:42:32,669 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:32,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:32,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:32,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837023453] [2021-03-24 13:42:32,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:32,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:32,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932215378] [2021-03-24 13:42:32,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:32,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:32,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:32,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:32,687 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:32,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 466 transitions, 21542 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:32,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:32,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:32,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:33,493 INFO L129 PetriNetUnfolder]: 245/2994 cut-off events. [2021-03-24 13:42:33,493 INFO L130 PetriNetUnfolder]: For 141348/141761 co-relation queries the response was YES. [2021-03-24 13:42:33,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26565 conditions, 2994 events. 245/2994 cut-off events. For 141348/141761 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 43081 event pairs, 14 based on Foata normal form. 7/2911 useless extension candidates. Maximal degree in co-relation 26414. Up to 594 conditions per place. [2021-03-24 13:42:33,536 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 322 selfloop transitions, 224 changer transitions 2/562 dead transitions. [2021-03-24 13:42:33,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 562 transitions, 26254 flow [2021-03-24 13:42:33,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:33,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:33,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:33,537 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:33,537 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:33,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:33,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:33,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:33,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:33,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:33,538 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:33,538 INFO L185 Difference]: Start difference. First operand has 565 places, 466 transitions, 21542 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:33,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 562 transitions, 26254 flow [2021-03-24 13:42:34,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 562 transitions, 25835 flow, removed 16 selfloop flow, removed 4 redundant places. [2021-03-24 13:42:34,570 INFO L241 Difference]: Finished difference. Result has 574 places, 504 transitions, 23400 flow [2021-03-24 13:42:34,570 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=21189, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=23400, PETRI_PLACES=574, PETRI_TRANSITIONS=504} [2021-03-24 13:42:34,570 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 536 predicate places. [2021-03-24 13:42:34,570 INFO L480 AbstractCegarLoop]: Abstraction has has 574 places, 504 transitions, 23400 flow [2021-03-24 13:42:34,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:34,570 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:34,570 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:34,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-03-24 13:42:34,570 INFO L428 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:34,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:34,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1479225812, now seen corresponding path program 135 times [2021-03-24 13:42:34,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:34,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771388052] [2021-03-24 13:42:34,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:34,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:34,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:34,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:34,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:34,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:34,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:34,587 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:34,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:34,604 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:34,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:34,624 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:42:34,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:42:34,643 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:34,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:34,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:34,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771388052] [2021-03-24 13:42:34,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:34,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:34,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833906465] [2021-03-24 13:42:34,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:34,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:34,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:34,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:34,661 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:34,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 504 transitions, 23400 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:34,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:34,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:34,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:35,536 INFO L129 PetriNetUnfolder]: 248/3035 cut-off events. [2021-03-24 13:42:35,536 INFO L130 PetriNetUnfolder]: For 154245/154591 co-relation queries the response was YES. [2021-03-24 13:42:35,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27591 conditions, 3035 events. 248/3035 cut-off events. For 154245/154591 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 43781 event pairs, 17 based on Foata normal form. 16/2968 useless extension candidates. Maximal degree in co-relation 27434. Up to 582 conditions per place. [2021-03-24 13:42:35,575 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 321 selfloop transitions, 251 changer transitions 2/588 dead transitions. [2021-03-24 13:42:35,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 588 transitions, 27646 flow [2021-03-24 13:42:35,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:35,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:35,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:35,576 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:35,576 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:35,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:35,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:35,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:35,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:35,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:35,577 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:35,577 INFO L185 Difference]: Start difference. First operand has 574 places, 504 transitions, 23400 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:35,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 588 transitions, 27646 flow [2021-03-24 13:42:36,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 588 transitions, 27399 flow, removed 71 selfloop flow, removed 3 redundant places. [2021-03-24 13:42:36,672 INFO L241 Difference]: Finished difference. Result has 583 places, 532 transitions, 25284 flow [2021-03-24 13:42:36,672 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=23195, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=25284, PETRI_PLACES=583, PETRI_TRANSITIONS=532} [2021-03-24 13:42:36,672 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 545 predicate places. [2021-03-24 13:42:36,672 INFO L480 AbstractCegarLoop]: Abstraction has has 583 places, 532 transitions, 25284 flow [2021-03-24 13:42:36,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:36,672 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:36,672 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:36,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-03-24 13:42:36,672 INFO L428 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:36,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:36,673 INFO L82 PathProgramCache]: Analyzing trace with hash -806306608, now seen corresponding path program 136 times [2021-03-24 13:42:36,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:36,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920020329] [2021-03-24 13:42:36,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:36,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:36,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:36,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:36,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:36,683 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:36,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:36,689 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:36,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:36,698 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:36,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:36,711 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:36,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:36,731 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:36,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:36,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920020329] [2021-03-24 13:42:36,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:36,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:36,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117969844] [2021-03-24 13:42:36,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:36,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:36,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:36,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:36,752 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:36,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 532 transitions, 25284 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:36,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:36,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:36,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:37,682 INFO L129 PetriNetUnfolder]: 247/3025 cut-off events. [2021-03-24 13:42:37,682 INFO L130 PetriNetUnfolder]: For 161258/161592 co-relation queries the response was YES. [2021-03-24 13:42:37,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28108 conditions, 3025 events. 247/3025 cut-off events. For 161258/161592 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 43640 event pairs, 28 based on Foata normal form. 34/2982 useless extension candidates. Maximal degree in co-relation 27947. Up to 592 conditions per place. [2021-03-24 13:42:37,721 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 319 selfloop transitions, 217 changer transitions 0/550 dead transitions. [2021-03-24 13:42:37,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 550 transitions, 26935 flow [2021-03-24 13:42:37,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:37,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:37,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:37,722 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:37,722 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:37,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:37,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:37,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:37,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:37,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:37,723 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:37,723 INFO L185 Difference]: Start difference. First operand has 583 places, 532 transitions, 25284 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:37,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 550 transitions, 26935 flow [2021-03-24 13:42:38,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 550 transitions, 26601 flow, removed 71 selfloop flow, removed 4 redundant places. [2021-03-24 13:42:38,927 INFO L241 Difference]: Finished difference. Result has 586 places, 532 transitions, 25395 flow [2021-03-24 13:42:38,927 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=24958, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=25395, PETRI_PLACES=586, PETRI_TRANSITIONS=532} [2021-03-24 13:42:38,927 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 548 predicate places. [2021-03-24 13:42:38,927 INFO L480 AbstractCegarLoop]: Abstraction has has 586 places, 532 transitions, 25395 flow [2021-03-24 13:42:38,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:38,927 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:38,929 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:38,929 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-03-24 13:42:38,929 INFO L428 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:38,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:38,929 INFO L82 PathProgramCache]: Analyzing trace with hash -2079182480, now seen corresponding path program 137 times [2021-03-24 13:42:38,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:38,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343379340] [2021-03-24 13:42:38,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:38,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:38,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:38,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:38,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:38,939 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:38,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:38,945 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:38,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:38,954 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:42:38,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:42:38,974 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:38,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:38,997 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:38,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:39,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:39,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343379340] [2021-03-24 13:42:39,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:39,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:39,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391934524] [2021-03-24 13:42:39,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:39,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:39,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:39,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:39,018 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:39,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 532 transitions, 25395 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:39,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:39,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:39,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:39,955 INFO L129 PetriNetUnfolder]: 247/3038 cut-off events. [2021-03-24 13:42:39,955 INFO L130 PetriNetUnfolder]: For 159797/160011 co-relation queries the response was YES. [2021-03-24 13:42:39,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28285 conditions, 3038 events. 247/3038 cut-off events. For 159797/160011 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 43933 event pairs, 17 based on Foata normal form. 23/2989 useless extension candidates. Maximal degree in co-relation 28126. Up to 592 conditions per place. [2021-03-24 13:42:39,998 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 331 selfloop transitions, 205 changer transitions 0/550 dead transitions. [2021-03-24 13:42:39,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 550 transitions, 27046 flow [2021-03-24 13:42:39,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:39,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:39,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:39,999 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:39,999 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:39,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:39,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:39,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:39,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:40,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:40,000 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:40,000 INFO L185 Difference]: Start difference. First operand has 586 places, 532 transitions, 25395 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:40,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 550 transitions, 27046 flow [2021-03-24 13:42:41,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 550 transitions, 26628 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-24 13:42:41,216 INFO L241 Difference]: Finished difference. Result has 590 places, 533 transitions, 25467 flow [2021-03-24 13:42:41,216 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=24977, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=25467, PETRI_PLACES=590, PETRI_TRANSITIONS=533} [2021-03-24 13:42:41,216 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 552 predicate places. [2021-03-24 13:42:41,216 INFO L480 AbstractCegarLoop]: Abstraction has has 590 places, 533 transitions, 25467 flow [2021-03-24 13:42:41,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:41,216 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:41,216 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:41,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-03-24 13:42:41,216 INFO L428 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:41,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:41,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1032176724, now seen corresponding path program 138 times [2021-03-24 13:42:41,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:41,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426654301] [2021-03-24 13:42:41,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:41,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:41,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:41,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:41,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:41,228 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:41,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:41,238 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:41,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:41,253 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:41,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:41,273 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:42:41,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:42:41,290 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:41,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:41,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:41,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426654301] [2021-03-24 13:42:41,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:41,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:41,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892894946] [2021-03-24 13:42:41,308 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:41,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:41,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:41,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:41,308 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:41,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 533 transitions, 25467 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:41,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:41,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:41,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:42,317 INFO L129 PetriNetUnfolder]: 266/3307 cut-off events. [2021-03-24 13:42:42,317 INFO L130 PetriNetUnfolder]: For 177102/177354 co-relation queries the response was YES. [2021-03-24 13:42:42,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30863 conditions, 3307 events. 266/3307 cut-off events. For 177102/177354 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 48607 event pairs, 17 based on Foata normal form. 17/3242 useless extension candidates. Maximal degree in co-relation 30702. Up to 615 conditions per place. [2021-03-24 13:42:42,361 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 338 selfloop transitions, 268 changer transitions 2/622 dead transitions. [2021-03-24 13:42:42,361 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 622 transitions, 30258 flow [2021-03-24 13:42:42,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:42,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:42,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:42,362 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:42,362 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:42,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:42,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:42,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:42,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:42,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:42,363 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:42,363 INFO L185 Difference]: Start difference. First operand has 590 places, 533 transitions, 25467 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:42,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 622 transitions, 30258 flow [2021-03-24 13:42:43,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 622 transitions, 29775 flow, removed 49 selfloop flow, removed 4 redundant places. [2021-03-24 13:42:43,716 INFO L241 Difference]: Finished difference. Result has 599 places, 562 transitions, 27264 flow [2021-03-24 13:42:43,716 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=25072, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27264, PETRI_PLACES=599, PETRI_TRANSITIONS=562} [2021-03-24 13:42:43,716 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 561 predicate places. [2021-03-24 13:42:43,716 INFO L480 AbstractCegarLoop]: Abstraction has has 599 places, 562 transitions, 27264 flow [2021-03-24 13:42:43,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:43,717 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:43,717 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:43,717 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-03-24 13:42:43,717 INFO L428 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:43,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:43,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1771496192, now seen corresponding path program 139 times [2021-03-24 13:42:43,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:43,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936601091] [2021-03-24 13:42:43,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:43,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:43,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:43,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:43,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:43,727 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:43,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:43,733 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:43,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:43,743 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:42:43,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:42:43,767 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:42:43,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:42:43,786 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:43,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:43,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:43,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936601091] [2021-03-24 13:42:43,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:43,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:43,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484918540] [2021-03-24 13:42:43,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:43,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:43,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:43,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:43,804 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:43,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 562 transitions, 27264 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:43,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:43,804 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:43,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:44,875 INFO L129 PetriNetUnfolder]: 265/3299 cut-off events. [2021-03-24 13:42:44,875 INFO L130 PetriNetUnfolder]: For 190484/190959 co-relation queries the response was YES. [2021-03-24 13:42:44,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31562 conditions, 3299 events. 265/3299 cut-off events. For 190484/190959 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 48556 event pairs, 18 based on Foata normal form. 24/3221 useless extension candidates. Maximal degree in co-relation 31395. Up to 610 conditions per place. [2021-03-24 13:42:44,921 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 345 selfloop transitions, 220 changer transitions 0/579 dead transitions. [2021-03-24 13:42:44,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 579 transitions, 28952 flow [2021-03-24 13:42:44,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:44,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:44,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:44,922 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:44,922 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:44,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:44,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:44,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:44,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:44,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:44,923 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:44,923 INFO L185 Difference]: Start difference. First operand has 599 places, 562 transitions, 27264 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:44,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 579 transitions, 28952 flow [2021-03-24 13:42:46,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 602 places, 579 transitions, 28743 flow, removed 51 selfloop flow, removed 3 redundant places. [2021-03-24 13:42:46,327 INFO L241 Difference]: Finished difference. Result has 603 places, 562 transitions, 27508 flow [2021-03-24 13:42:46,327 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=27065, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27508, PETRI_PLACES=603, PETRI_TRANSITIONS=562} [2021-03-24 13:42:46,328 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 565 predicate places. [2021-03-24 13:42:46,328 INFO L480 AbstractCegarLoop]: Abstraction has has 603 places, 562 transitions, 27508 flow [2021-03-24 13:42:46,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:46,328 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:46,328 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:46,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-03-24 13:42:46,328 INFO L428 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:46,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:46,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1230006316, now seen corresponding path program 140 times [2021-03-24 13:42:46,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:46,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101220023] [2021-03-24 13:42:46,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:46,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:46,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:46,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:46,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:46,338 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:46,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:46,344 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:46,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:46,354 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:42:46,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:42:46,368 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:46,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:46,385 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:46,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:46,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101220023] [2021-03-24 13:42:46,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:46,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:46,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512888607] [2021-03-24 13:42:46,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:46,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:46,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:46,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:46,403 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:46,403 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 562 transitions, 27508 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:46,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:46,403 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:46,403 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:47,424 INFO L129 PetriNetUnfolder]: 265/3298 cut-off events. [2021-03-24 13:42:47,424 INFO L130 PetriNetUnfolder]: For 190841/191338 co-relation queries the response was YES. [2021-03-24 13:42:47,462 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31810 conditions, 3298 events. 265/3298 cut-off events. For 190841/191338 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 48546 event pairs, 18 based on Foata normal form. 31/3227 useless extension candidates. Maximal degree in co-relation 31644. Up to 610 conditions per place. [2021-03-24 13:42:47,469 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 352 selfloop transitions, 213 changer transitions 0/579 dead transitions. [2021-03-24 13:42:47,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 579 transitions, 29194 flow [2021-03-24 13:42:47,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:47,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:47,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:47,470 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:47,470 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:47,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:47,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:47,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:47,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:47,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:47,471 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:47,471 INFO L185 Difference]: Start difference. First operand has 603 places, 562 transitions, 27508 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:47,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 579 transitions, 29194 flow [2021-03-24 13:42:48,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 579 transitions, 28673 flow, removed 0 selfloop flow, removed 7 redundant places. [2021-03-24 13:42:48,922 INFO L241 Difference]: Finished difference. Result has 604 places, 562 transitions, 27416 flow [2021-03-24 13:42:48,922 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=26987, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27416, PETRI_PLACES=604, PETRI_TRANSITIONS=562} [2021-03-24 13:42:48,922 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 566 predicate places. [2021-03-24 13:42:48,922 INFO L480 AbstractCegarLoop]: Abstraction has has 604 places, 562 transitions, 27416 flow [2021-03-24 13:42:48,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:48,922 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:48,922 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:48,922 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-03-24 13:42:48,923 INFO L428 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:48,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:48,923 INFO L82 PathProgramCache]: Analyzing trace with hash 271654616, now seen corresponding path program 141 times [2021-03-24 13:42:48,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:48,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655269920] [2021-03-24 13:42:48,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:48,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:48,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:48,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:48,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:48,932 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:48,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:48,938 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:48,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:48,947 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:42:48,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:42:48,959 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:48,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:48,976 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:48,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:48,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:48,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655269920] [2021-03-24 13:42:48,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:48,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:48,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747735616] [2021-03-24 13:42:48,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:48,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:48,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:48,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:48,993 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:48,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 562 transitions, 27416 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:48,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:48,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:48,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:50,085 INFO L129 PetriNetUnfolder]: 265/3297 cut-off events. [2021-03-24 13:42:50,085 INFO L130 PetriNetUnfolder]: For 195461/195958 co-relation queries the response was YES. [2021-03-24 13:42:50,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32030 conditions, 3297 events. 265/3297 cut-off events. For 195461/195958 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 48510 event pairs, 18 based on Foata normal form. 31/3226 useless extension candidates. Maximal degree in co-relation 31863. Up to 610 conditions per place. [2021-03-24 13:42:50,126 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 352 selfloop transitions, 213 changer transitions 0/579 dead transitions. [2021-03-24 13:42:50,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 579 transitions, 29110 flow [2021-03-24 13:42:50,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:50,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:50,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:50,127 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:50,127 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:50,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:50,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:50,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:50,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:50,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:50,128 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:50,128 INFO L185 Difference]: Start difference. First operand has 604 places, 562 transitions, 27416 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:50,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 579 transitions, 29110 flow [2021-03-24 13:42:51,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 579 transitions, 28799 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 13:42:51,405 INFO L241 Difference]: Finished difference. Result has 610 places, 564 transitions, 27679 flow [2021-03-24 13:42:51,405 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=27105, PETRI_DIFFERENCE_MINUEND_PLACES=601, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27679, PETRI_PLACES=610, PETRI_TRANSITIONS=564} [2021-03-24 13:42:51,405 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 572 predicate places. [2021-03-24 13:42:51,405 INFO L480 AbstractCegarLoop]: Abstraction has has 610 places, 564 transitions, 27679 flow [2021-03-24 13:42:51,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:51,405 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:51,405 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:51,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-03-24 13:42:51,405 INFO L428 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:51,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:51,405 INFO L82 PathProgramCache]: Analyzing trace with hash 405570734, now seen corresponding path program 142 times [2021-03-24 13:42:51,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:51,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753924124] [2021-03-24 13:42:51,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:51,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:51,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:51,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:51,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:51,416 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:51,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:51,423 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:51,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:51,432 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:42:51,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:42:51,446 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:42:51,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:42:51,473 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:51,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:51,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:51,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753924124] [2021-03-24 13:42:51,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:51,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:51,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548374284] [2021-03-24 13:42:51,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:51,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:51,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:51,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:51,490 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:51,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 564 transitions, 27679 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:51,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:51,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:51,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:52,505 INFO L129 PetriNetUnfolder]: 265/3284 cut-off events. [2021-03-24 13:42:52,506 INFO L130 PetriNetUnfolder]: For 203099/203574 co-relation queries the response was YES. [2021-03-24 13:42:52,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32531 conditions, 3284 events. 265/3284 cut-off events. For 203099/203574 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 48186 event pairs, 30 based on Foata normal form. 24/3205 useless extension candidates. Maximal degree in co-relation 32362. Up to 610 conditions per place. [2021-03-24 13:42:52,550 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 351 selfloop transitions, 214 changer transitions 0/579 dead transitions. [2021-03-24 13:42:52,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 579 transitions, 29285 flow [2021-03-24 13:42:52,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:52,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:52,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:52,551 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:52,551 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:52,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:52,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:52,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:52,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:52,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:52,551 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:52,552 INFO L185 Difference]: Start difference. First operand has 610 places, 564 transitions, 27679 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:52,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 579 transitions, 29285 flow [2021-03-24 13:42:54,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 579 transitions, 28900 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-03-24 13:42:54,097 INFO L241 Difference]: Finished difference. Result has 614 places, 564 transitions, 27725 flow [2021-03-24 13:42:54,098 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=27294, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27725, PETRI_PLACES=614, PETRI_TRANSITIONS=564} [2021-03-24 13:42:54,098 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 576 predicate places. [2021-03-24 13:42:54,098 INFO L480 AbstractCegarLoop]: Abstraction has has 614 places, 564 transitions, 27725 flow [2021-03-24 13:42:54,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:54,098 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:54,098 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:54,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-03-24 13:42:54,098 INFO L428 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:54,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:54,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1131673878, now seen corresponding path program 143 times [2021-03-24 13:42:54,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:54,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699478977] [2021-03-24 13:42:54,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:54,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:54,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:54,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:54,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:54,110 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:54,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:54,121 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:42:54,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:42:54,140 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:54,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:54,159 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:42:54,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:42:54,178 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:54,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:54,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:54,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699478977] [2021-03-24 13:42:54,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:54,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:54,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538899421] [2021-03-24 13:42:54,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:54,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:54,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:54,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:54,198 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:54,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 564 transitions, 27725 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:54,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:54,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:54,198 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:55,279 INFO L129 PetriNetUnfolder]: 266/3324 cut-off events. [2021-03-24 13:42:55,279 INFO L130 PetriNetUnfolder]: For 208545/209020 co-relation queries the response was YES. [2021-03-24 13:42:55,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33067 conditions, 3324 events. 266/3324 cut-off events. For 208545/209020 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 49074 event pairs, 15 based on Foata normal form. 21/3246 useless extension candidates. Maximal degree in co-relation 32897. Up to 642 conditions per place. [2021-03-24 13:42:55,333 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 317 selfloop transitions, 290 changer transitions 2/623 dead transitions. [2021-03-24 13:42:55,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 623 transitions, 31236 flow [2021-03-24 13:42:55,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:55,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:55,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:55,334 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:55,334 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:55,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:55,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:55,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:55,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:55,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:55,335 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:55,335 INFO L185 Difference]: Start difference. First operand has 614 places, 564 transitions, 27725 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:55,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 623 transitions, 31236 flow [2021-03-24 13:42:56,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 623 transitions, 30832 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 13:42:56,878 INFO L241 Difference]: Finished difference. Result has 623 places, 578 transitions, 28963 flow [2021-03-24 13:42:56,878 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=27360, PETRI_DIFFERENCE_MINUEND_PLACES=610, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=28963, PETRI_PLACES=623, PETRI_TRANSITIONS=578} [2021-03-24 13:42:56,878 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 585 predicate places. [2021-03-24 13:42:56,878 INFO L480 AbstractCegarLoop]: Abstraction has has 623 places, 578 transitions, 28963 flow [2021-03-24 13:42:56,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:56,879 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:56,879 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:56,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-03-24 13:42:56,879 INFO L428 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:56,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:56,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1557411738, now seen corresponding path program 144 times [2021-03-24 13:42:56,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:56,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771004003] [2021-03-24 13:42:56,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:56,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:56,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:56,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:56,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:56,889 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:56,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:56,901 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:56,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:56,911 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:56,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:56,924 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:42:56,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:42:56,942 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:56,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:56,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:56,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771004003] [2021-03-24 13:42:56,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:56,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:56,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651607733] [2021-03-24 13:42:56,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:56,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:56,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:56,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:56,972 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:56,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 623 places, 578 transitions, 28963 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:56,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:56,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:56,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:57,997 INFO L129 PetriNetUnfolder]: 265/3314 cut-off events. [2021-03-24 13:42:57,997 INFO L130 PetriNetUnfolder]: For 223042/223548 co-relation queries the response was YES. [2021-03-24 13:42:58,036 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33716 conditions, 3314 events. 265/3314 cut-off events. For 223042/223548 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 48816 event pairs, 16 based on Foata normal form. 32/3252 useless extension candidates. Maximal degree in co-relation 33540. Up to 642 conditions per place. [2021-03-24 13:42:58,043 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 343 selfloop transitions, 256 changer transitions 0/613 dead transitions. [2021-03-24 13:42:58,043 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 613 transitions, 31487 flow [2021-03-24 13:42:58,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:42:58,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:42:58,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:42:58,044 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:42:58,044 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:42:58,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:42:58,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:58,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:42:58,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:58,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:58,045 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:58,045 INFO L185 Difference]: Start difference. First operand has 623 places, 578 transitions, 28963 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:42:58,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 613 transitions, 31487 flow [2021-03-24 13:42:59,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 613 transitions, 31118 flow, removed 57 selfloop flow, removed 5 redundant places. [2021-03-24 13:42:59,747 INFO L241 Difference]: Finished difference. Result has 627 places, 589 transitions, 29679 flow [2021-03-24 13:42:59,747 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=28616, PETRI_DIFFERENCE_MINUEND_PLACES=617, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=29679, PETRI_PLACES=627, PETRI_TRANSITIONS=589} [2021-03-24 13:42:59,747 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 589 predicate places. [2021-03-24 13:42:59,748 INFO L480 AbstractCegarLoop]: Abstraction has has 627 places, 589 transitions, 29679 flow [2021-03-24 13:42:59,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:59,748 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:59,748 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:59,748 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-03-24 13:42:59,748 INFO L428 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:59,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:59,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1054613808, now seen corresponding path program 145 times [2021-03-24 13:42:59,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:59,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052398731] [2021-03-24 13:42:59,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:59,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:59,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:59,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:59,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:59,757 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:59,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:59,768 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:59,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:59,782 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:42:59,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:42:59,794 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:59,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:59,815 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:42:59,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:59,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052398731] [2021-03-24 13:42:59,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:59,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:59,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214212130] [2021-03-24 13:42:59,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:42:59,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:59,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:42:59,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:42:59,834 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:42:59,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 589 transitions, 29679 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:59,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:59,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:42:59,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:00,975 INFO L129 PetriNetUnfolder]: 265/3313 cut-off events. [2021-03-24 13:43:00,976 INFO L130 PetriNetUnfolder]: For 225851/226364 co-relation queries the response was YES. [2021-03-24 13:43:01,015 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33854 conditions, 3313 events. 265/3313 cut-off events. For 225851/226364 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 48844 event pairs, 16 based on Foata normal form. 34/3245 useless extension candidates. Maximal degree in co-relation 33677. Up to 642 conditions per place. [2021-03-24 13:43:01,021 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 346 selfloop transitions, 253 changer transitions 0/613 dead transitions. [2021-03-24 13:43:01,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 634 places, 613 transitions, 31766 flow [2021-03-24 13:43:01,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:43:01,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:43:01,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:43:01,022 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:43:01,022 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:43:01,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:43:01,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:01,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:43:01,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:01,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:01,023 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:01,023 INFO L185 Difference]: Start difference. First operand has 627 places, 589 transitions, 29679 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:43:01,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 634 places, 613 transitions, 31766 flow [2021-03-24 13:43:02,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 632 places, 613 transitions, 31350 flow, removed 24 selfloop flow, removed 2 redundant places. [2021-03-24 13:43:02,498 INFO L241 Difference]: Finished difference. Result has 635 places, 594 transitions, 30040 flow [2021-03-24 13:43:02,498 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=29263, PETRI_DIFFERENCE_MINUEND_PLACES=625, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=30040, PETRI_PLACES=635, PETRI_TRANSITIONS=594} [2021-03-24 13:43:02,498 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 597 predicate places. [2021-03-24 13:43:02,498 INFO L480 AbstractCegarLoop]: Abstraction has has 635 places, 594 transitions, 30040 flow [2021-03-24 13:43:02,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:02,498 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:02,498 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:02,498 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-03-24 13:43:02,498 INFO L428 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:02,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:02,498 INFO L82 PathProgramCache]: Analyzing trace with hash 997720932, now seen corresponding path program 146 times [2021-03-24 13:43:02,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:02,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065017201] [2021-03-24 13:43:02,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:02,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:02,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:02,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:02,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:02,508 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:02,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:02,514 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:02,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:02,524 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:43:02,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:43:02,536 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:02,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:02,552 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:43:02,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:43:02,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:02,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065017201] [2021-03-24 13:43:02,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:02,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:43:02,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449454261] [2021-03-24 13:43:02,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:43:02,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:02,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:43:02,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:43:02,570 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:43:02,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 635 places, 594 transitions, 30040 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:02,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:02,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:43:02,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:03,773 INFO L129 PetriNetUnfolder]: 265/3312 cut-off events. [2021-03-24 13:43:03,773 INFO L130 PetriNetUnfolder]: For 232411/232900 co-relation queries the response was YES. [2021-03-24 13:43:03,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34324 conditions, 3312 events. 265/3312 cut-off events. For 232411/232900 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 48762 event pairs, 16 based on Foata normal form. 26/3234 useless extension candidates. Maximal degree in co-relation 34144. Up to 611 conditions per place. [2021-03-24 13:43:03,817 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 357 selfloop transitions, 236 changer transitions 0/607 dead transitions. [2021-03-24 13:43:03,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 642 places, 607 transitions, 31668 flow [2021-03-24 13:43:03,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:43:03,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:43:03,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:43:03,818 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:43:03,818 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:43:03,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:43:03,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:03,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:43:03,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:03,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:03,818 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:03,818 INFO L185 Difference]: Start difference. First operand has 635 places, 594 transitions, 30040 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:43:03,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 642 places, 607 transitions, 31668 flow [2021-03-24 13:43:05,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 607 transitions, 31137 flow, removed 32 selfloop flow, removed 3 redundant places. [2021-03-24 13:43:05,377 INFO L241 Difference]: Finished difference. Result has 640 places, 594 transitions, 29984 flow [2021-03-24 13:43:05,377 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=29509, PETRI_DIFFERENCE_MINUEND_PLACES=632, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=29984, PETRI_PLACES=640, PETRI_TRANSITIONS=594} [2021-03-24 13:43:05,378 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 602 predicate places. [2021-03-24 13:43:05,378 INFO L480 AbstractCegarLoop]: Abstraction has has 640 places, 594 transitions, 29984 flow [2021-03-24 13:43:05,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:05,378 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:05,378 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:05,378 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-03-24 13:43:05,378 INFO L428 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:05,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:05,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1881379822, now seen corresponding path program 147 times [2021-03-24 13:43:05,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:05,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309715767] [2021-03-24 13:43:05,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:05,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:05,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:05,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:05,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:05,389 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:05,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:05,395 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:05,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:05,404 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:05,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:05,418 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:43:05,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:43:05,436 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:43:05,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:43:05,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:05,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309715767] [2021-03-24 13:43:05,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:05,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:43:05,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041243570] [2021-03-24 13:43:05,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:43:05,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:05,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:43:05,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:43:05,454 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:43:05,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 594 transitions, 29984 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:05,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:05,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:43:05,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:06,619 INFO L129 PetriNetUnfolder]: 265/3311 cut-off events. [2021-03-24 13:43:06,619 INFO L130 PetriNetUnfolder]: For 237528/238017 co-relation queries the response was YES. [2021-03-24 13:43:06,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34635 conditions, 3311 events. 265/3311 cut-off events. For 237528/238017 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 48821 event pairs, 16 based on Foata normal form. 26/3233 useless extension candidates. Maximal degree in co-relation 34454. Up to 611 conditions per place. [2021-03-24 13:43:06,670 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 346 selfloop transitions, 247 changer transitions 0/607 dead transitions. [2021-03-24 13:43:06,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 647 places, 607 transitions, 31620 flow [2021-03-24 13:43:06,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:43:06,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:43:06,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:43:06,671 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:43:06,671 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:43:06,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:43:06,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:06,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:43:06,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:06,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:06,672 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:06,672 INFO L185 Difference]: Start difference. First operand has 640 places, 594 transitions, 29984 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:43:06,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 647 places, 607 transitions, 31620 flow [2021-03-24 13:43:08,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 642 places, 607 transitions, 31169 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-24 13:43:08,307 INFO L241 Difference]: Finished difference. Result has 643 places, 594 transitions, 30030 flow [2021-03-24 13:43:08,307 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=29533, PETRI_DIFFERENCE_MINUEND_PLACES=635, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=30030, PETRI_PLACES=643, PETRI_TRANSITIONS=594} [2021-03-24 13:43:08,307 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 605 predicate places. [2021-03-24 13:43:08,308 INFO L480 AbstractCegarLoop]: Abstraction has has 643 places, 594 transitions, 30030 flow [2021-03-24 13:43:08,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:08,308 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:08,308 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:08,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-03-24 13:43:08,308 INFO L428 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:08,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:08,308 INFO L82 PathProgramCache]: Analyzing trace with hash -789112250, now seen corresponding path program 148 times [2021-03-24 13:43:08,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:08,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357791800] [2021-03-24 13:43:08,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:08,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:08,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:08,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:08,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:08,320 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:08,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:08,332 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:08,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:08,348 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:08,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:08,369 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:43:08,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:43:08,388 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:43:08,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:43:08,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:08,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357791800] [2021-03-24 13:43:08,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:08,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:43:08,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026070567] [2021-03-24 13:43:08,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:43:08,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:08,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:43:08,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:43:08,407 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:43:08,407 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 594 transitions, 30030 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:08,407 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:08,407 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:43:08,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:09,578 INFO L129 PetriNetUnfolder]: 265/3298 cut-off events. [2021-03-24 13:43:09,578 INFO L130 PetriNetUnfolder]: For 244857/245370 co-relation queries the response was YES. [2021-03-24 13:43:09,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34932 conditions, 3298 events. 265/3298 cut-off events. For 244857/245370 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 48472 event pairs, 20 based on Foata normal form. 29/3224 useless extension candidates. Maximal degree in co-relation 34750. Up to 642 conditions per place. [2021-03-24 13:43:09,624 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 334 selfloop transitions, 280 changer transitions 2/630 dead transitions. [2021-03-24 13:43:09,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 630 transitions, 32693 flow [2021-03-24 13:43:09,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:43:09,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:43:09,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:43:09,625 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:43:09,625 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:43:09,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:43:09,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:09,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:43:09,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:09,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:09,626 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:09,626 INFO L185 Difference]: Start difference. First operand has 643 places, 594 transitions, 30030 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:43:09,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 630 transitions, 32693 flow [2021-03-24 13:43:11,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 630 transitions, 32269 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 13:43:11,228 INFO L241 Difference]: Finished difference. Result has 651 places, 601 transitions, 30657 flow [2021-03-24 13:43:11,228 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=29623, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=30657, PETRI_PLACES=651, PETRI_TRANSITIONS=601} [2021-03-24 13:43:11,228 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 613 predicate places. [2021-03-24 13:43:11,228 INFO L480 AbstractCegarLoop]: Abstraction has has 651 places, 601 transitions, 30657 flow [2021-03-24 13:43:11,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:11,228 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:11,229 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:11,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-03-24 13:43:11,229 INFO L428 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:11,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:11,229 INFO L82 PathProgramCache]: Analyzing trace with hash 550977936, now seen corresponding path program 149 times [2021-03-24 13:43:11,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:11,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679163245] [2021-03-24 13:43:11,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:11,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:11,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:11,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:11,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:11,238 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:11,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:11,244 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:11,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:11,254 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:11,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:11,266 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:11,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:11,283 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:43:11,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:43:11,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:11,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679163245] [2021-03-24 13:43:11,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:11,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:43:11,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416708944] [2021-03-24 13:43:11,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:43:11,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:11,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:43:11,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:43:11,300 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:43:11,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 601 transitions, 30657 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:11,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:11,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:43:11,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:12,442 INFO L129 PetriNetUnfolder]: 264/3288 cut-off events. [2021-03-24 13:43:12,443 INFO L130 PetriNetUnfolder]: For 256916/257429 co-relation queries the response was YES. [2021-03-24 13:43:12,484 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35386 conditions, 3288 events. 264/3288 cut-off events. For 256916/257429 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 48293 event pairs, 28 based on Foata normal form. 35/3219 useless extension candidates. Maximal degree in co-relation 35199. Up to 611 conditions per place. [2021-03-24 13:43:12,490 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 345 selfloop transitions, 255 changer transitions 0/614 dead transitions. [2021-03-24 13:43:12,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 614 transitions, 32325 flow [2021-03-24 13:43:12,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:43:12,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:43:12,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:43:12,491 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:43:12,491 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:43:12,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:43:12,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:12,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:43:12,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:12,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:12,492 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:12,492 INFO L185 Difference]: Start difference. First operand has 651 places, 601 transitions, 30657 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:43:12,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 614 transitions, 32325 flow [2021-03-24 13:43:14,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 614 transitions, 31833 flow, removed 25 selfloop flow, removed 5 redundant places. [2021-03-24 13:43:14,639 INFO L241 Difference]: Finished difference. Result has 654 places, 602 transitions, 30822 flow [2021-03-24 13:43:14,640 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=30175, PETRI_DIFFERENCE_MINUEND_PLACES=645, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=30822, PETRI_PLACES=654, PETRI_TRANSITIONS=602} [2021-03-24 13:43:14,640 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 616 predicate places. [2021-03-24 13:43:14,640 INFO L480 AbstractCegarLoop]: Abstraction has has 654 places, 602 transitions, 30822 flow [2021-03-24 13:43:14,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:14,640 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:14,640 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:14,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-03-24 13:43:14,640 INFO L428 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:14,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:14,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1610121208, now seen corresponding path program 150 times [2021-03-24 13:43:14,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:14,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774278712] [2021-03-24 13:43:14,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:14,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:14,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:14,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:14,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:14,650 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:14,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:14,656 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:14,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:14,665 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:14,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:14,677 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:14,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:14,694 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:43:14,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:43:14,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:14,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774278712] [2021-03-24 13:43:14,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:14,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:43:14,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075089262] [2021-03-24 13:43:14,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:43:14,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:14,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:43:14,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:43:14,711 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:43:14,711 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 654 places, 602 transitions, 30822 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:14,711 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:14,711 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:43:14,711 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:15,918 INFO L129 PetriNetUnfolder]: 264/3299 cut-off events. [2021-03-24 13:43:15,918 INFO L130 PetriNetUnfolder]: For 255531/256044 co-relation queries the response was YES. [2021-03-24 13:43:15,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35445 conditions, 3299 events. 264/3299 cut-off events. For 255531/256044 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 48517 event pairs, 16 based on Foata normal form. 35/3231 useless extension candidates. Maximal degree in co-relation 35258. Up to 611 conditions per place. [2021-03-24 13:43:15,966 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 345 selfloop transitions, 255 changer transitions 0/614 dead transitions. [2021-03-24 13:43:15,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 614 transitions, 32430 flow [2021-03-24 13:43:15,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:43:15,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:43:15,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:43:15,967 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:43:15,967 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:43:15,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:43:15,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:15,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:43:15,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:15,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:15,968 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:15,968 INFO L185 Difference]: Start difference. First operand has 654 places, 602 transitions, 30822 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:43:15,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 614 transitions, 32430 flow [2021-03-24 13:43:17,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 657 places, 614 transitions, 31984 flow, removed 16 selfloop flow, removed 4 redundant places. [2021-03-24 13:43:17,728 INFO L241 Difference]: Finished difference. Result has 658 places, 602 transitions, 30889 flow [2021-03-24 13:43:17,729 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=30376, PETRI_DIFFERENCE_MINUEND_PLACES=650, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=30889, PETRI_PLACES=658, PETRI_TRANSITIONS=602} [2021-03-24 13:43:17,729 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 620 predicate places. [2021-03-24 13:43:17,729 INFO L480 AbstractCegarLoop]: Abstraction has has 658 places, 602 transitions, 30889 flow [2021-03-24 13:43:17,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:17,729 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:17,729 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:17,729 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-03-24 13:43:17,729 INFO L428 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:17,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:17,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1987246676, now seen corresponding path program 151 times [2021-03-24 13:43:17,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:17,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397930245] [2021-03-24 13:43:17,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:17,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:17,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:17,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:17,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:17,739 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:17,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:17,745 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:17,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:17,753 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:17,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:17,765 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:17,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:17,782 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:43:17,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:43:17,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:17,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397930245] [2021-03-24 13:43:17,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:17,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:43:17,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151170459] [2021-03-24 13:43:17,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:43:17,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:17,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:43:17,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:43:17,799 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:43:17,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 658 places, 602 transitions, 30889 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:17,799 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:17,799 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:43:17,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:18,955 INFO L129 PetriNetUnfolder]: 264/3298 cut-off events. [2021-03-24 13:43:18,955 INFO L130 PetriNetUnfolder]: For 261565/262076 co-relation queries the response was YES. [2021-03-24 13:43:18,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35765 conditions, 3298 events. 264/3298 cut-off events. For 261565/262076 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 48496 event pairs, 16 based on Foata normal form. 35/3230 useless extension candidates. Maximal degree in co-relation 35577. Up to 611 conditions per place. [2021-03-24 13:43:19,003 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 349 selfloop transitions, 251 changer transitions 0/614 dead transitions. [2021-03-24 13:43:19,003 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 665 places, 614 transitions, 32505 flow [2021-03-24 13:43:19,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:43:19,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:43:19,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:43:19,004 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:43:19,004 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:43:19,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:43:19,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:19,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:43:19,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:19,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:19,005 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:19,005 INFO L185 Difference]: Start difference. First operand has 658 places, 602 transitions, 30889 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:43:19,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 665 places, 614 transitions, 32505 flow [2021-03-24 13:43:20,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 614 transitions, 32180 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 13:43:20,789 INFO L241 Difference]: Finished difference. Result has 663 places, 602 transitions, 31069 flow [2021-03-24 13:43:20,789 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=30564, PETRI_DIFFERENCE_MINUEND_PLACES=655, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=31069, PETRI_PLACES=663, PETRI_TRANSITIONS=602} [2021-03-24 13:43:20,789 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 625 predicate places. [2021-03-24 13:43:20,789 INFO L480 AbstractCegarLoop]: Abstraction has has 663 places, 602 transitions, 31069 flow [2021-03-24 13:43:20,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:20,789 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:20,789 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:20,789 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-03-24 13:43:20,789 INFO L428 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:20,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:20,790 INFO L82 PathProgramCache]: Analyzing trace with hash -152298350, now seen corresponding path program 152 times [2021-03-24 13:43:20,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:20,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534325129] [2021-03-24 13:43:20,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:20,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:20,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:20,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:20,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:20,799 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:20,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:20,806 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:20,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:20,815 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:43:20,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:43:20,838 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:43:20,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:43:20,855 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:43:20,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:43:20,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:20,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534325129] [2021-03-24 13:43:20,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:20,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:43:20,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220911443] [2021-03-24 13:43:20,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:43:20,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:20,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:43:20,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:43:20,872 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:43:20,873 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 602 transitions, 31069 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:20,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:20,873 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:43:20,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:22,005 INFO L129 PetriNetUnfolder]: 264/3297 cut-off events. [2021-03-24 13:43:22,005 INFO L130 PetriNetUnfolder]: For 269954/270441 co-relation queries the response was YES. [2021-03-24 13:43:22,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36228 conditions, 3297 events. 264/3297 cut-off events. For 269954/270441 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 48500 event pairs, 16 based on Foata normal form. 26/3220 useless extension candidates. Maximal degree in co-relation 36039. Up to 611 conditions per place. [2021-03-24 13:43:22,054 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 349 selfloop transitions, 251 changer transitions 0/614 dead transitions. [2021-03-24 13:43:22,054 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 614 transitions, 32693 flow [2021-03-24 13:43:22,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:43:22,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:43:22,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:43:22,055 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:43:22,055 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:43:22,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:43:22,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:22,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:43:22,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:22,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:22,055 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:22,055 INFO L185 Difference]: Start difference. First operand has 663 places, 602 transitions, 31069 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:43:22,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 614 transitions, 32693 flow [2021-03-24 13:43:23,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 665 places, 614 transitions, 32209 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-24 13:43:23,982 INFO L241 Difference]: Finished difference. Result has 666 places, 602 transitions, 31090 flow [2021-03-24 13:43:23,983 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=30585, PETRI_DIFFERENCE_MINUEND_PLACES=658, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=31090, PETRI_PLACES=666, PETRI_TRANSITIONS=602} [2021-03-24 13:43:23,983 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 628 predicate places. [2021-03-24 13:43:23,983 INFO L480 AbstractCegarLoop]: Abstraction has has 666 places, 602 transitions, 31090 flow [2021-03-24 13:43:23,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:23,983 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:23,983 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:23,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-03-24 13:43:23,983 INFO L428 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:23,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:23,983 INFO L82 PathProgramCache]: Analyzing trace with hash -822436972, now seen corresponding path program 153 times [2021-03-24 13:43:23,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:23,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224828159] [2021-03-24 13:43:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:23,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:23,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:23,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:23,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:23,993 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:23,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:24,000 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:24,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:24,009 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:43:24,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:43:24,022 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:24,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:24,040 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:43:24,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:43:24,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:24,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224828159] [2021-03-24 13:43:24,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:24,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:43:24,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477165750] [2021-03-24 13:43:24,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:43:24,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:24,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:43:24,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:43:24,058 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:43:24,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 666 places, 602 transitions, 31090 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:24,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:24,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:43:24,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:25,356 INFO L129 PetriNetUnfolder]: 264/3296 cut-off events. [2021-03-24 13:43:25,356 INFO L130 PetriNetUnfolder]: For 277429/277916 co-relation queries the response was YES. [2021-03-24 13:43:25,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36531 conditions, 3296 events. 264/3296 cut-off events. For 277429/277916 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 48494 event pairs, 16 based on Foata normal form. 26/3219 useless extension candidates. Maximal degree in co-relation 36341. Up to 611 conditions per place. [2021-03-24 13:43:25,401 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 365 selfloop transitions, 235 changer transitions 0/614 dead transitions. [2021-03-24 13:43:25,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 673 places, 614 transitions, 32722 flow [2021-03-24 13:43:25,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:43:25,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:43:25,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:43:25,402 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:43:25,402 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:43:25,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:43:25,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:25,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:43:25,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:25,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:25,403 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:25,403 INFO L185 Difference]: Start difference. First operand has 666 places, 602 transitions, 31090 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:43:25,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 673 places, 614 transitions, 32722 flow [2021-03-24 13:43:27,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 668 places, 614 transitions, 32238 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-24 13:43:27,233 INFO L241 Difference]: Finished difference. Result has 670 places, 604 transitions, 31245 flow [2021-03-24 13:43:27,233 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=30606, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=31245, PETRI_PLACES=670, PETRI_TRANSITIONS=604} [2021-03-24 13:43:27,233 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 632 predicate places. [2021-03-24 13:43:27,233 INFO L480 AbstractCegarLoop]: Abstraction has has 670 places, 604 transitions, 31245 flow [2021-03-24 13:43:27,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:27,233 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:27,233 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:27,233 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-03-24 13:43:27,233 INFO L428 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:27,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:27,233 INFO L82 PathProgramCache]: Analyzing trace with hash 843741566, now seen corresponding path program 154 times [2021-03-24 13:43:27,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:27,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632798702] [2021-03-24 13:43:27,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:27,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:27,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:27,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:27,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:27,249 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:27,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:27,260 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:43:27,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:43:27,270 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:43:27,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:43:27,283 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:43:27,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:43:27,301 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:43:27,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:43:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:27,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632798702] [2021-03-24 13:43:27,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:27,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:43:27,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877433973] [2021-03-24 13:43:27,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:43:27,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:27,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:43:27,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:43:27,318 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:43:27,319 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 670 places, 604 transitions, 31245 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:27,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:27,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:43:27,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:28,485 INFO L129 PetriNetUnfolder]: 264/3295 cut-off events. [2021-03-24 13:43:28,486 INFO L130 PetriNetUnfolder]: For 288453/289069 co-relation queries the response was YES. [2021-03-24 13:43:28,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36937 conditions, 3295 events. 264/3295 cut-off events. For 288453/289069 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 48428 event pairs, 17 based on Foata normal form. 38/3233 useless extension candidates. Maximal degree in co-relation 36745. Up to 642 conditions per place. [2021-03-24 13:43:28,534 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 351 selfloop transitions, 254 changer transitions 0/619 dead transitions. [2021-03-24 13:43:28,535 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 677 places, 619 transitions, 33001 flow [2021-03-24 13:43:28,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:43:28,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:43:28,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:43:28,535 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:43:28,535 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:43:28,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:43:28,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:28,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:43:28,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:28,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:28,536 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:28,536 INFO L185 Difference]: Start difference. First operand has 670 places, 604 transitions, 31245 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:43:28,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 677 places, 619 transitions, 33001 flow [2021-03-24 13:43:30,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 619 transitions, 32619 flow, removed 29 selfloop flow, removed 3 redundant places. [2021-03-24 13:43:30,801 INFO L241 Difference]: Finished difference. Result has 675 places, 604 transitions, 31394 flow [2021-03-24 13:43:30,801 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=30883, PETRI_DIFFERENCE_MINUEND_PLACES=667, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=31394, PETRI_PLACES=675, PETRI_TRANSITIONS=604} [2021-03-24 13:43:30,801 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 637 predicate places. [2021-03-24 13:43:30,801 INFO L480 AbstractCegarLoop]: Abstraction has has 675 places, 604 transitions, 31394 flow [2021-03-24 13:43:30,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:30,802 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:30,802 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:30,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-03-24 13:43:30,802 INFO L428 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:30,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:30,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1887388230, now seen corresponding path program 155 times [2021-03-24 13:43:30,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:30,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925103180] [2021-03-24 13:43:30,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:30,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:30,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:30,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:30,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:30,812 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:30,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:30,819 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:30,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:30,828 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:30,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:30,842 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:30,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:30,859 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:43:30,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:43:30,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:30,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925103180] [2021-03-24 13:43:30,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:30,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:43:30,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171316178] [2021-03-24 13:43:30,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:43:30,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:30,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:43:30,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:43:30,877 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:43:30,877 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 604 transitions, 31394 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:30,877 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:30,877 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:43:30,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:32,075 INFO L129 PetriNetUnfolder]: 264/3294 cut-off events. [2021-03-24 13:43:32,075 INFO L130 PetriNetUnfolder]: For 293610/294231 co-relation queries the response was YES. [2021-03-24 13:43:32,118 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37201 conditions, 3294 events. 264/3294 cut-off events. For 293610/294231 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 48419 event pairs, 16 based on Foata normal form. 38/3230 useless extension candidates. Maximal degree in co-relation 37008. Up to 611 conditions per place. [2021-03-24 13:43:32,125 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 362 selfloop transitions, 238 changer transitions 0/614 dead transitions. [2021-03-24 13:43:32,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 614 transitions, 32946 flow [2021-03-24 13:43:32,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:43:32,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:43:32,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:43:32,126 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:43:32,126 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:43:32,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:43:32,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:32,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:43:32,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:32,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:32,127 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:32,127 INFO L185 Difference]: Start difference. First operand has 675 places, 604 transitions, 31394 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:43:32,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 682 places, 614 transitions, 32946 flow [2021-03-24 13:43:34,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 678 places, 614 transitions, 32457 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 13:43:34,506 INFO L241 Difference]: Finished difference. Result has 679 places, 604 transitions, 31384 flow [2021-03-24 13:43:34,506 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=30905, PETRI_DIFFERENCE_MINUEND_PLACES=671, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=31384, PETRI_PLACES=679, PETRI_TRANSITIONS=604} [2021-03-24 13:43:34,506 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 641 predicate places. [2021-03-24 13:43:34,506 INFO L480 AbstractCegarLoop]: Abstraction has has 679 places, 604 transitions, 31384 flow [2021-03-24 13:43:34,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:34,506 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:34,507 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:34,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-03-24 13:43:34,507 INFO L428 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:34,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:34,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1533206484, now seen corresponding path program 156 times [2021-03-24 13:43:34,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:34,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52718057] [2021-03-24 13:43:34,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:34,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:34,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:34,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:34,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:34,517 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:34,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:34,525 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:34,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:34,534 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:34,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:34,548 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:34,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:34,566 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:43:34,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:43:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:34,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52718057] [2021-03-24 13:43:34,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:34,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:43:34,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803169274] [2021-03-24 13:43:34,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:43:34,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:34,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:43:34,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:43:34,585 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:43:34,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 679 places, 604 transitions, 31384 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:34,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:34,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:43:34,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:35,811 INFO L129 PetriNetUnfolder]: 264/3293 cut-off events. [2021-03-24 13:43:35,811 INFO L130 PetriNetUnfolder]: For 301179/301772 co-relation queries the response was YES. [2021-03-24 13:43:35,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37528 conditions, 3293 events. 264/3293 cut-off events. For 301179/301772 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 48394 event pairs, 16 based on Foata normal form. 29/3227 useless extension candidates. Maximal degree in co-relation 37334. Up to 611 conditions per place. [2021-03-24 13:43:35,862 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 362 selfloop transitions, 238 changer transitions 0/614 dead transitions. [2021-03-24 13:43:35,862 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 686 places, 614 transitions, 32944 flow [2021-03-24 13:43:35,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:43:35,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:43:35,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:43:35,863 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:43:35,863 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:43:35,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:43:35,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:35,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:43:35,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:35,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:35,864 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:35,864 INFO L185 Difference]: Start difference. First operand has 679 places, 604 transitions, 31384 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:43:35,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 686 places, 614 transitions, 32944 flow [2021-03-24 13:43:38,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 682 places, 614 transitions, 32553 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 13:43:38,331 INFO L241 Difference]: Finished difference. Result has 683 places, 604 transitions, 31472 flow [2021-03-24 13:43:38,331 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=30993, PETRI_DIFFERENCE_MINUEND_PLACES=675, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=31472, PETRI_PLACES=683, PETRI_TRANSITIONS=604} [2021-03-24 13:43:38,331 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 645 predicate places. [2021-03-24 13:43:38,332 INFO L480 AbstractCegarLoop]: Abstraction has has 683 places, 604 transitions, 31472 flow [2021-03-24 13:43:38,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:38,332 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:38,332 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:38,332 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-03-24 13:43:38,332 INFO L428 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:38,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:38,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1640453678, now seen corresponding path program 157 times [2021-03-24 13:43:38,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:38,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215864473] [2021-03-24 13:43:38,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:38,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:38,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:38,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:38,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:38,342 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:38,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:38,354 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:43:38,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:43:38,363 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:38,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:38,376 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:38,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:38,392 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:43:38,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:43:38,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:38,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215864473] [2021-03-24 13:43:38,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:38,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:43:38,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973822074] [2021-03-24 13:43:38,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:43:38,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:38,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:43:38,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:43:38,409 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:43:38,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 683 places, 604 transitions, 31472 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:38,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:38,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:43:38,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:39,659 INFO L129 PetriNetUnfolder]: 264/3292 cut-off events. [2021-03-24 13:43:39,659 INFO L130 PetriNetUnfolder]: For 310018/310613 co-relation queries the response was YES. [2021-03-24 13:43:39,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37907 conditions, 3292 events. 264/3292 cut-off events. For 310018/310613 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 48431 event pairs, 16 based on Foata normal form. 33/3225 useless extension candidates. Maximal degree in co-relation 37712. Up to 642 conditions per place. [2021-03-24 13:43:39,703 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 343 selfloop transitions, 262 changer transitions 0/619 dead transitions. [2021-03-24 13:43:39,704 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 619 transitions, 33241 flow [2021-03-24 13:43:39,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:43:39,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:43:39,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:43:39,704 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:43:39,704 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:43:39,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:43:39,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:39,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:43:39,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:39,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:39,705 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:39,705 INFO L185 Difference]: Start difference. First operand has 683 places, 604 transitions, 31472 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:43:39,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 690 places, 619 transitions, 33241 flow [2021-03-24 13:43:41,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 619 transitions, 32916 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 13:43:41,757 INFO L241 Difference]: Finished difference. Result has 689 places, 605 transitions, 31752 flow [2021-03-24 13:43:41,758 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=31147, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=31752, PETRI_PLACES=689, PETRI_TRANSITIONS=605} [2021-03-24 13:43:41,758 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 651 predicate places. [2021-03-24 13:43:41,758 INFO L480 AbstractCegarLoop]: Abstraction has has 689 places, 605 transitions, 31752 flow [2021-03-24 13:43:41,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:41,758 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:41,758 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:41,758 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-03-24 13:43:41,758 INFO L428 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:41,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:41,758 INFO L82 PathProgramCache]: Analyzing trace with hash 731374018, now seen corresponding path program 158 times [2021-03-24 13:43:41,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:41,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67354238] [2021-03-24 13:43:41,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:41,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:41,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:41,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:41,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:41,769 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:41,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:41,781 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:43:41,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:43:41,791 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:41,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:41,804 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:41,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:41,822 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:43:41,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:43:41,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:41,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67354238] [2021-03-24 13:43:41,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:41,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:43:41,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026122376] [2021-03-24 13:43:41,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:43:41,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:41,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:43:41,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:43:41,840 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:43:41,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 689 places, 605 transitions, 31752 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:41,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:41,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:43:41,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:43,050 INFO L129 PetriNetUnfolder]: 264/3279 cut-off events. [2021-03-24 13:43:43,051 INFO L130 PetriNetUnfolder]: For 321233/321852 co-relation queries the response was YES. [2021-03-24 13:43:43,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38352 conditions, 3279 events. 264/3279 cut-off events. For 321233/321852 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 48171 event pairs, 21 based on Foata normal form. 38/3216 useless extension candidates. Maximal degree in co-relation 38155. Up to 642 conditions per place. [2021-03-24 13:43:43,101 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 347 selfloop transitions, 258 changer transitions 0/619 dead transitions. [2021-03-24 13:43:43,101 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 696 places, 619 transitions, 33474 flow [2021-03-24 13:43:43,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:43:43,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:43:43,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:43:43,102 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:43:43,102 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:43:43,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:43:43,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:43,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:43:43,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:43,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:43,103 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:43,103 INFO L185 Difference]: Start difference. First operand has 689 places, 605 transitions, 31752 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:43:43,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 696 places, 619 transitions, 33474 flow [2021-03-24 13:43:45,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 692 places, 619 transitions, 32960 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-03-24 13:43:45,419 INFO L241 Difference]: Finished difference. Result has 694 places, 607 transitions, 31872 flow [2021-03-24 13:43:45,420 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=31238, PETRI_DIFFERENCE_MINUEND_PLACES=685, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=31872, PETRI_PLACES=694, PETRI_TRANSITIONS=607} [2021-03-24 13:43:45,420 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 656 predicate places. [2021-03-24 13:43:45,420 INFO L480 AbstractCegarLoop]: Abstraction has has 694 places, 607 transitions, 31872 flow [2021-03-24 13:43:45,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:45,420 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:45,420 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:45,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-03-24 13:43:45,420 INFO L428 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:45,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:45,420 INFO L82 PathProgramCache]: Analyzing trace with hash -2138594276, now seen corresponding path program 159 times [2021-03-24 13:43:45,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:45,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792593759] [2021-03-24 13:43:45,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:45,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:45,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:45,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:45,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:45,440 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:45,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:45,448 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:45,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:45,459 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:43:45,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:43:45,473 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:45,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:45,493 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:43:45,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:43:45,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:45,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792593759] [2021-03-24 13:43:45,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:45,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:43:45,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281546439] [2021-03-24 13:43:45,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:43:45,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:45,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:43:45,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:43:45,512 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:43:45,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 694 places, 607 transitions, 31872 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:45,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:45,512 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:43:45,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:46,742 INFO L129 PetriNetUnfolder]: 264/3290 cut-off events. [2021-03-24 13:43:46,743 INFO L130 PetriNetUnfolder]: For 331314/332033 co-relation queries the response was YES. [2021-03-24 13:43:46,787 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38689 conditions, 3290 events. 264/3290 cut-off events. For 331314/332033 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 48320 event pairs, 16 based on Foata normal form. 40/3236 useless extension candidates. Maximal degree in co-relation 38490. Up to 611 conditions per place. [2021-03-24 13:43:46,794 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 364 selfloop transitions, 239 changer transitions 0/617 dead transitions. [2021-03-24 13:43:46,795 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 701 places, 617 transitions, 33462 flow [2021-03-24 13:43:46,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:43:46,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:43:46,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:43:46,795 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:43:46,796 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:43:46,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:43:46,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:46,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:43:46,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:46,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:46,796 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:46,796 INFO L185 Difference]: Start difference. First operand has 694 places, 607 transitions, 31872 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:43:46,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 701 places, 617 transitions, 33462 flow [2021-03-24 13:43:49,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 698 places, 617 transitions, 32970 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-03-24 13:43:49,093 INFO L241 Difference]: Finished difference. Result has 699 places, 607 transitions, 31861 flow [2021-03-24 13:43:49,093 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=31380, PETRI_DIFFERENCE_MINUEND_PLACES=691, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=31861, PETRI_PLACES=699, PETRI_TRANSITIONS=607} [2021-03-24 13:43:49,093 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 661 predicate places. [2021-03-24 13:43:49,093 INFO L480 AbstractCegarLoop]: Abstraction has has 699 places, 607 transitions, 31861 flow [2021-03-24 13:43:49,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:49,093 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:49,093 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:49,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-03-24 13:43:49,094 INFO L428 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:49,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:49,094 INFO L82 PathProgramCache]: Analyzing trace with hash -615590052, now seen corresponding path program 160 times [2021-03-24 13:43:49,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:49,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670055068] [2021-03-24 13:43:49,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:49,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:49,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:49,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:49,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:49,103 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:49,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:49,110 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:49,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:49,119 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:49,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:49,132 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:49,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:49,149 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:43:49,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:43:49,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:49,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670055068] [2021-03-24 13:43:49,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:49,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:43:49,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034556399] [2021-03-24 13:43:49,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:43:49,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:49,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:43:49,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:43:49,167 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:43:49,167 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 699 places, 607 transitions, 31861 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:49,167 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:49,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:43:49,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:50,342 INFO L129 PetriNetUnfolder]: 264/3289 cut-off events. [2021-03-24 13:43:50,343 INFO L130 PetriNetUnfolder]: For 339704/340445 co-relation queries the response was YES. [2021-03-24 13:43:50,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38994 conditions, 3289 events. 264/3289 cut-off events. For 339704/340445 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 48339 event pairs, 16 based on Foata normal form. 40/3228 useless extension candidates. Maximal degree in co-relation 38794. Up to 611 conditions per place. [2021-03-24 13:43:50,393 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 365 selfloop transitions, 238 changer transitions 0/617 dead transitions. [2021-03-24 13:43:50,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 706 places, 617 transitions, 33459 flow [2021-03-24 13:43:50,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:43:50,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:43:50,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:43:50,394 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:43:50,394 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:43:50,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:43:50,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:50,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:43:50,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:50,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:50,394 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:50,395 INFO L185 Difference]: Start difference. First operand has 699 places, 607 transitions, 31861 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:43:50,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 706 places, 617 transitions, 33459 flow [2021-03-24 13:43:52,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 701 places, 617 transitions, 33007 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-24 13:43:52,467 INFO L241 Difference]: Finished difference. Result has 702 places, 607 transitions, 31888 flow [2021-03-24 13:43:52,467 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=31409, PETRI_DIFFERENCE_MINUEND_PLACES=694, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=31888, PETRI_PLACES=702, PETRI_TRANSITIONS=607} [2021-03-24 13:43:52,467 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 664 predicate places. [2021-03-24 13:43:52,467 INFO L480 AbstractCegarLoop]: Abstraction has has 702 places, 607 transitions, 31888 flow [2021-03-24 13:43:52,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:52,467 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:52,467 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:52,467 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-03-24 13:43:52,467 INFO L428 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:52,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:52,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1360292550, now seen corresponding path program 161 times [2021-03-24 13:43:52,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:52,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30648101] [2021-03-24 13:43:52,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:52,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:52,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:52,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:52,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:52,477 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:52,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:52,483 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:52,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:52,491 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:52,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:52,504 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:52,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:52,521 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:43:52,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:43:52,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:52,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30648101] [2021-03-24 13:43:52,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:52,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:43:52,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815295278] [2021-03-24 13:43:52,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:43:52,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:52,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:43:52,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:43:52,539 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:43:52,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 607 transitions, 31888 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:52,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:52,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:43:52,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:53,819 INFO L129 PetriNetUnfolder]: 264/3288 cut-off events. [2021-03-24 13:43:53,819 INFO L130 PetriNetUnfolder]: For 349100/349817 co-relation queries the response was YES. [2021-03-24 13:43:53,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39282 conditions, 3288 events. 264/3288 cut-off events. For 349100/349817 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 48319 event pairs, 16 based on Foata normal form. 31/3217 useless extension candidates. Maximal degree in co-relation 39081. Up to 611 conditions per place. [2021-03-24 13:43:53,867 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 347 selfloop transitions, 211 changer transitions 45/617 dead transitions. [2021-03-24 13:43:53,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 709 places, 617 transitions, 33494 flow [2021-03-24 13:43:53,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:43:53,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:43:53,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:43:53,867 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:43:53,867 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:43:53,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:43:53,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:53,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:43:53,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:53,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:53,868 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:53,868 INFO L185 Difference]: Start difference. First operand has 702 places, 607 transitions, 31888 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:43:53,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 709 places, 617 transitions, 33494 flow [2021-03-24 13:43:56,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 705 places, 617 transitions, 33100 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 13:43:56,053 INFO L241 Difference]: Finished difference. Result has 706 places, 562 transitions, 28456 flow [2021-03-24 13:43:56,053 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=31494, PETRI_DIFFERENCE_MINUEND_PLACES=698, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=28456, PETRI_PLACES=706, PETRI_TRANSITIONS=562} [2021-03-24 13:43:56,054 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 668 predicate places. [2021-03-24 13:43:56,054 INFO L480 AbstractCegarLoop]: Abstraction has has 706 places, 562 transitions, 28456 flow [2021-03-24 13:43:56,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:56,054 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:56,054 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:56,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-03-24 13:43:56,054 INFO L428 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:56,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:56,054 INFO L82 PathProgramCache]: Analyzing trace with hash 2013043110, now seen corresponding path program 162 times [2021-03-24 13:43:56,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:56,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700761901] [2021-03-24 13:43:56,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:56,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:56,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:56,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:56,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:56,064 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:56,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:56,076 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:43:56,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:43:56,092 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:56,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:56,108 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:56,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:56,129 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:43:56,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:43:56,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:56,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700761901] [2021-03-24 13:43:56,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:56,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:43:56,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882908805] [2021-03-24 13:43:56,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:43:56,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:56,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:43:56,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:43:56,148 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:43:56,148 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 706 places, 562 transitions, 28456 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:56,148 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:56,148 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:43:56,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:57,287 INFO L129 PetriNetUnfolder]: 263/3121 cut-off events. [2021-03-24 13:43:57,287 INFO L130 PetriNetUnfolder]: For 338502/338832 co-relation queries the response was YES. [2021-03-24 13:43:57,329 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36901 conditions, 3121 events. 263/3121 cut-off events. For 338502/338832 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 45145 event pairs, 21 based on Foata normal form. 27/3066 useless extension candidates. Maximal degree in co-relation 36699. Up to 626 conditions per place. [2021-03-24 13:43:57,336 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 310 selfloop transitions, 239 changer transitions 11/574 dead transitions. [2021-03-24 13:43:57,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 665 places, 574 transitions, 30032 flow [2021-03-24 13:43:57,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:43:57,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:43:57,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:43:57,336 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:43:57,337 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:43:57,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:43:57,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:57,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:43:57,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:57,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:57,337 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:57,337 INFO L185 Difference]: Start difference. First operand has 706 places, 562 transitions, 28456 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:43:57,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 665 places, 574 transitions, 30032 flow [2021-03-24 13:43:58,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 629 places, 574 transitions, 29235 flow, removed 258 selfloop flow, removed 36 redundant places. [2021-03-24 13:43:58,984 INFO L241 Difference]: Finished difference. Result has 630 places, 551 transitions, 27647 flow [2021-03-24 13:43:58,984 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=27859, PETRI_DIFFERENCE_MINUEND_PLACES=622, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27647, PETRI_PLACES=630, PETRI_TRANSITIONS=551} [2021-03-24 13:43:58,984 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 592 predicate places. [2021-03-24 13:43:58,984 INFO L480 AbstractCegarLoop]: Abstraction has has 630 places, 551 transitions, 27647 flow [2021-03-24 13:43:58,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:58,984 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:58,984 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:58,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-03-24 13:43:58,984 INFO L428 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:58,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:58,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1859515920, now seen corresponding path program 163 times [2021-03-24 13:43:58,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:58,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024381636] [2021-03-24 13:43:58,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:58,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:58,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:58,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:58,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:58,994 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:58,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:59,006 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:59,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:59,020 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:43:59,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:43:59,034 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:59,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:59,052 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:43:59,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:43:59,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:59,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024381636] [2021-03-24 13:43:59,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:59,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:43:59,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125373670] [2021-03-24 13:43:59,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:43:59,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:59,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:43:59,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:43:59,082 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:43:59,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 551 transitions, 27647 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:59,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:59,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:43:59,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:00,084 INFO L129 PetriNetUnfolder]: 262/3095 cut-off events. [2021-03-24 13:44:00,084 INFO L130 PetriNetUnfolder]: For 168661/168727 co-relation queries the response was YES. [2021-03-24 13:44:00,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29246 conditions, 3095 events. 262/3095 cut-off events. For 168661/168727 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 44624 event pairs, 15 based on Foata normal form. 12/3054 useless extension candidates. Maximal degree in co-relation 29076. Up to 626 conditions per place. [2021-03-24 13:44:00,131 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 303 selfloop transitions, 253 changer transitions 0/570 dead transitions. [2021-03-24 13:44:00,131 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 570 transitions, 29357 flow [2021-03-24 13:44:00,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:44:00,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:44:00,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:44:00,132 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:44:00,132 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:44:00,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:44:00,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:00,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:44:00,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:00,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:00,133 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:00,133 INFO L185 Difference]: Start difference. First operand has 630 places, 551 transitions, 27647 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:44:00,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 570 transitions, 29357 flow [2021-03-24 13:44:01,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 616 places, 570 transitions, 28791 flow, removed 31 selfloop flow, removed 15 redundant places. [2021-03-24 13:44:01,426 INFO L241 Difference]: Finished difference. Result has 619 places, 557 transitions, 27998 flow [2021-03-24 13:44:01,426 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=27141, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27998, PETRI_PLACES=619, PETRI_TRANSITIONS=557} [2021-03-24 13:44:01,426 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 581 predicate places. [2021-03-24 13:44:01,426 INFO L480 AbstractCegarLoop]: Abstraction has has 619 places, 557 transitions, 27998 flow [2021-03-24 13:44:01,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:01,427 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:01,427 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:01,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-03-24 13:44:01,427 INFO L428 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:01,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:01,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1671105896, now seen corresponding path program 164 times [2021-03-24 13:44:01,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:01,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889809639] [2021-03-24 13:44:01,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:01,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:01,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:01,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:01,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:01,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:01,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:44:01,442 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:44:01,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:44:01,462 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:44:01,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:44:01,482 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:44:01,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:44:01,501 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:44:01,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:44:01,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:01,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889809639] [2021-03-24 13:44:01,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:01,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:44:01,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683726233] [2021-03-24 13:44:01,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:44:01,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:01,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:44:01,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:44:01,520 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:44:01,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 557 transitions, 27998 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:01,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:01,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:44:01,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:02,675 INFO L129 PetriNetUnfolder]: 292/3581 cut-off events. [2021-03-24 13:44:02,675 INFO L130 PetriNetUnfolder]: For 178610/178676 co-relation queries the response was YES. [2021-03-24 13:44:02,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31497 conditions, 3581 events. 292/3581 cut-off events. For 178610/178676 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 53215 event pairs, 7 based on Foata normal form. 1/3521 useless extension candidates. Maximal degree in co-relation 31334. Up to 634 conditions per place. [2021-03-24 13:44:02,718 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 423 selfloop transitions, 255 changer transitions 2/694 dead transitions. [2021-03-24 13:44:02,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 694 transitions, 35266 flow [2021-03-24 13:44:02,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:44:02,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:44:02,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:44:02,719 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:44:02,719 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:44:02,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:44:02,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:02,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:44:02,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:02,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:02,720 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:02,720 INFO L185 Difference]: Start difference. First operand has 619 places, 557 transitions, 27998 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:44:02,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 694 transitions, 35266 flow [2021-03-24 13:44:04,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 694 transitions, 34686 flow, removed 13 selfloop flow, removed 3 redundant places. [2021-03-24 13:44:04,080 INFO L241 Difference]: Finished difference. Result has 629 places, 596 transitions, 30364 flow [2021-03-24 13:44:04,080 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=27513, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=30364, PETRI_PLACES=629, PETRI_TRANSITIONS=596} [2021-03-24 13:44:04,080 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 591 predicate places. [2021-03-24 13:44:04,080 INFO L480 AbstractCegarLoop]: Abstraction has has 629 places, 596 transitions, 30364 flow [2021-03-24 13:44:04,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:04,080 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:04,080 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:04,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-03-24 13:44:04,080 INFO L428 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:04,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:04,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1907288762, now seen corresponding path program 165 times [2021-03-24 13:44:04,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:04,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495203363] [2021-03-24 13:44:04,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:04,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:04,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:04,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:04,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:04,096 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:44:04,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:44:04,107 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:44:04,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:44:04,121 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:44:04,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:44:04,139 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:44:04,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:44:04,156 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:44:04,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:44:04,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:04,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495203363] [2021-03-24 13:44:04,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:04,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:44:04,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306094573] [2021-03-24 13:44:04,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:44:04,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:04,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:44:04,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:44:04,173 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:44:04,174 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 596 transitions, 30364 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:04,174 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:04,174 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:44:04,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:05,376 INFO L129 PetriNetUnfolder]: 291/3571 cut-off events. [2021-03-24 13:44:05,377 INFO L130 PetriNetUnfolder]: For 188739/188823 co-relation queries the response was YES. [2021-03-24 13:44:05,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32169 conditions, 3571 events. 291/3571 cut-off events. For 188739/188823 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 53115 event pairs, 20 based on Foata normal form. 10/3525 useless extension candidates. Maximal degree in co-relation 32000. Up to 692 conditions per place. [2021-03-24 13:44:05,425 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 305 selfloop transitions, 289 changer transitions 3/611 dead transitions. [2021-03-24 13:44:05,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 611 transitions, 31921 flow [2021-03-24 13:44:05,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:44:05,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:44:05,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:44:05,426 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:44:05,426 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:44:05,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:44:05,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:05,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:44:05,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:05,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:05,427 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:05,427 INFO L185 Difference]: Start difference. First operand has 629 places, 596 transitions, 30364 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:44:05,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 611 transitions, 31921 flow [2021-03-24 13:44:06,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 632 places, 611 transitions, 31813 flow, removed 15 selfloop flow, removed 3 redundant places. [2021-03-24 13:44:06,938 INFO L241 Difference]: Finished difference. Result has 635 places, 595 transitions, 30846 flow [2021-03-24 13:44:06,939 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=30272, PETRI_DIFFERENCE_MINUEND_PLACES=625, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=30846, PETRI_PLACES=635, PETRI_TRANSITIONS=595} [2021-03-24 13:44:06,939 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 597 predicate places. [2021-03-24 13:44:06,939 INFO L480 AbstractCegarLoop]: Abstraction has has 635 places, 595 transitions, 30846 flow [2021-03-24 13:44:06,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:06,939 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:06,939 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:06,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-03-24 13:44:06,939 INFO L428 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:06,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:06,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1122740500, now seen corresponding path program 166 times [2021-03-24 13:44:06,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:06,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194456851] [2021-03-24 13:44:06,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:06,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:06,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:06,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:06,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:06,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:06,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:44:06,962 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:44:06,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:44:06,979 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:44:06,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:44:06,998 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:44:06,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:44:07,016 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:44:07,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:44:07,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:07,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194456851] [2021-03-24 13:44:07,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:07,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:44:07,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787411586] [2021-03-24 13:44:07,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:44:07,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:07,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:44:07,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:44:07,034 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:44:07,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 635 places, 595 transitions, 30846 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:07,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:07,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:44:07,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:08,220 INFO L129 PetriNetUnfolder]: 297/3697 cut-off events. [2021-03-24 13:44:08,220 INFO L130 PetriNetUnfolder]: For 197728/197816 co-relation queries the response was YES. [2021-03-24 13:44:08,267 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33435 conditions, 3697 events. 297/3697 cut-off events. For 197728/197816 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 55430 event pairs, 14 based on Foata normal form. 8/3647 useless extension candidates. Maximal degree in co-relation 33265. Up to 689 conditions per place. [2021-03-24 13:44:08,274 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 420 selfloop transitions, 257 changer transitions 2/693 dead transitions. [2021-03-24 13:44:08,274 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 693 transitions, 36350 flow [2021-03-24 13:44:08,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:44:08,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:44:08,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:44:08,275 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:44:08,275 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:44:08,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:44:08,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:08,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:44:08,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:08,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:08,276 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:08,276 INFO L185 Difference]: Start difference. First operand has 635 places, 595 transitions, 30846 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:44:08,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 693 transitions, 36350 flow [2021-03-24 13:44:09,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 693 transitions, 35712 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-24 13:44:09,872 INFO L241 Difference]: Finished difference. Result has 641 places, 622 transitions, 32444 flow [2021-03-24 13:44:09,873 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=30275, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=32444, PETRI_PLACES=641, PETRI_TRANSITIONS=622} [2021-03-24 13:44:09,873 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 603 predicate places. [2021-03-24 13:44:09,873 INFO L480 AbstractCegarLoop]: Abstraction has has 641 places, 622 transitions, 32444 flow [2021-03-24 13:44:09,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:09,873 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:09,873 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:09,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-03-24 13:44:09,873 INFO L428 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:09,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:09,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1678057242, now seen corresponding path program 167 times [2021-03-24 13:44:09,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:09,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064304164] [2021-03-24 13:44:09,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:09,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:09,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:09,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:09,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:09,884 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:44:09,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:44:09,895 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:44:09,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:44:09,910 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:44:09,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:44:09,929 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:44:09,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:44:09,947 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:44:09,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:44:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:09,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064304164] [2021-03-24 13:44:09,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:09,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:44:09,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957761731] [2021-03-24 13:44:09,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:44:09,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:09,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:44:09,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:44:09,964 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:44:09,965 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 622 transitions, 32444 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:09,965 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:09,965 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:44:09,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:11,285 INFO L129 PetriNetUnfolder]: 297/3716 cut-off events. [2021-03-24 13:44:11,285 INFO L130 PetriNetUnfolder]: For 206000/206143 co-relation queries the response was YES. [2021-03-24 13:44:11,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33806 conditions, 3716 events. 297/3716 cut-off events. For 206000/206143 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 55722 event pairs, 20 based on Foata normal form. 15/3674 useless extension candidates. Maximal degree in co-relation 33632. Up to 692 conditions per place. [2021-03-24 13:44:11,332 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 312 selfloop transitions, 311 changer transitions 2/639 dead transitions. [2021-03-24 13:44:11,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 647 places, 639 transitions, 34245 flow [2021-03-24 13:44:11,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:44:11,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:44:11,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:44:11,332 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:44:11,333 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:44:11,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:44:11,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:11,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:44:11,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:11,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:11,333 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:11,333 INFO L185 Difference]: Start difference. First operand has 641 places, 622 transitions, 32444 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:44:11,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 647 places, 639 transitions, 34245 flow [2021-03-24 13:44:12,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 644 places, 639 transitions, 33992 flow, removed 52 selfloop flow, removed 3 redundant places. [2021-03-24 13:44:13,010 INFO L241 Difference]: Finished difference. Result has 648 places, 625 transitions, 33014 flow [2021-03-24 13:44:13,010 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=32201, PETRI_DIFFERENCE_MINUEND_PLACES=637, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=33014, PETRI_PLACES=648, PETRI_TRANSITIONS=625} [2021-03-24 13:44:13,011 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 610 predicate places. [2021-03-24 13:44:13,011 INFO L480 AbstractCegarLoop]: Abstraction has has 648 places, 625 transitions, 33014 flow [2021-03-24 13:44:13,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:13,011 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:13,011 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:13,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-03-24 13:44:13,011 INFO L428 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:13,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:13,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1416545170, now seen corresponding path program 168 times [2021-03-24 13:44:13,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:13,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092524224] [2021-03-24 13:44:13,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:13,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:13,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:13,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:13,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:13,021 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:44:13,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:44:13,033 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:44:13,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:44:13,050 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:44:13,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:44:13,070 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:44:13,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:44:13,088 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:44:13,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:44:13,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:13,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092524224] [2021-03-24 13:44:13,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:13,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:44:13,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809502135] [2021-03-24 13:44:13,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:44:13,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:13,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:44:13,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:44:13,105 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:44:13,106 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 625 transitions, 33014 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:13,106 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:13,106 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:44:13,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:14,435 INFO L129 PetriNetUnfolder]: 296/3706 cut-off events. [2021-03-24 13:44:14,435 INFO L130 PetriNetUnfolder]: For 208934/209077 co-relation queries the response was YES. [2021-03-24 13:44:14,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34086 conditions, 3706 events. 296/3706 cut-off events. For 208934/209077 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 55600 event pairs, 20 based on Foata normal form. 15/3664 useless extension candidates. Maximal degree in co-relation 33910. Up to 692 conditions per place. [2021-03-24 13:44:14,496 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 346 selfloop transitions, 295 changer transitions 2/657 dead transitions. [2021-03-24 13:44:14,496 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 654 places, 657 transitions, 35566 flow [2021-03-24 13:44:14,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:44:14,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:44:14,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:44:14,497 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:44:14,497 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:44:14,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:44:14,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:14,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:44:14,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:14,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:14,498 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:14,498 INFO L185 Difference]: Start difference. First operand has 648 places, 625 transitions, 33014 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:44:14,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 654 places, 657 transitions, 35566 flow [2021-03-24 13:44:16,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 657 transitions, 34977 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-03-24 13:44:16,242 INFO L241 Difference]: Finished difference. Result has 653 places, 631 transitions, 33487 flow [2021-03-24 13:44:16,242 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=32438, PETRI_DIFFERENCE_MINUEND_PLACES=642, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=33487, PETRI_PLACES=653, PETRI_TRANSITIONS=631} [2021-03-24 13:44:16,242 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 615 predicate places. [2021-03-24 13:44:16,243 INFO L480 AbstractCegarLoop]: Abstraction has has 653 places, 631 transitions, 33487 flow [2021-03-24 13:44:16,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:16,243 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:16,243 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:16,243 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-03-24 13:44:16,243 INFO L428 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:16,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:16,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1872207556, now seen corresponding path program 169 times [2021-03-24 13:44:16,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:16,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298820678] [2021-03-24 13:44:16,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:16,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:16,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:16,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:16,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:16,260 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:44:16,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:44:16,272 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:44:16,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:44:16,287 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:44:16,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:44:16,307 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:44:16,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:44:16,326 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:44:16,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:44:16,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:16,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298820678] [2021-03-24 13:44:16,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:16,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:44:16,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639778732] [2021-03-24 13:44:16,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:44:16,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:16,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:44:16,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:44:16,346 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:44:16,346 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 653 places, 631 transitions, 33487 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:16,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:16,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:44:16,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:17,741 INFO L129 PetriNetUnfolder]: 295/3696 cut-off events. [2021-03-24 13:44:17,741 INFO L130 PetriNetUnfolder]: For 213316/213508 co-relation queries the response was YES. [2021-03-24 13:44:17,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34155 conditions, 3696 events. 295/3696 cut-off events. For 213316/213508 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 55443 event pairs, 20 based on Foata normal form. 18/3657 useless extension candidates. Maximal degree in co-relation 33977. Up to 692 conditions per place. [2021-03-24 13:44:17,792 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 310 selfloop transitions, 316 changer transitions 2/642 dead transitions. [2021-03-24 13:44:17,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 642 transitions, 35058 flow [2021-03-24 13:44:17,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:44:17,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:44:17,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:44:17,793 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:44:17,793 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:44:17,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:44:17,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:17,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:44:17,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:17,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:17,794 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:17,794 INFO L185 Difference]: Start difference. First operand has 653 places, 631 transitions, 33487 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:44:17,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 642 transitions, 35058 flow [2021-03-24 13:44:19,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 642 transitions, 34602 flow, removed 27 selfloop flow, removed 3 redundant places. [2021-03-24 13:44:19,536 INFO L241 Difference]: Finished difference. Result has 658 places, 632 transitions, 33751 flow [2021-03-24 13:44:19,536 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=33039, PETRI_DIFFERENCE_MINUEND_PLACES=649, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=314, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=33751, PETRI_PLACES=658, PETRI_TRANSITIONS=632} [2021-03-24 13:44:19,536 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 620 predicate places. [2021-03-24 13:44:19,536 INFO L480 AbstractCegarLoop]: Abstraction has has 658 places, 632 transitions, 33751 flow [2021-03-24 13:44:19,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:19,536 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:19,536 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:19,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-03-24 13:44:19,536 INFO L428 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:19,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:19,537 INFO L82 PathProgramCache]: Analyzing trace with hash 187039396, now seen corresponding path program 170 times [2021-03-24 13:44:19,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:19,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908263954] [2021-03-24 13:44:19,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:19,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:19,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:19,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:19,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:19,548 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:44:19,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:44:19,559 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:44:19,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:44:19,573 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:44:19,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:44:19,587 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:44:19,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:44:19,604 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:44:19,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:44:19,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:19,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908263954] [2021-03-24 13:44:19,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:19,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:44:19,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689054905] [2021-03-24 13:44:19,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:44:19,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:19,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:44:19,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:44:19,621 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:44:19,621 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 658 places, 632 transitions, 33751 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:19,621 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:19,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:44:19,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:20,900 INFO L129 PetriNetUnfolder]: 294/3686 cut-off events. [2021-03-24 13:44:20,900 INFO L130 PetriNetUnfolder]: For 212797/212989 co-relation queries the response was YES. [2021-03-24 13:44:20,944 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34244 conditions, 3686 events. 294/3686 cut-off events. For 212797/212989 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 55241 event pairs, 20 based on Foata normal form. 18/3647 useless extension candidates. Maximal degree in co-relation 34065. Up to 692 conditions per place. [2021-03-24 13:44:20,951 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 304 selfloop transitions, 316 changer transitions 6/640 dead transitions. [2021-03-24 13:44:20,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 640 transitions, 35147 flow [2021-03-24 13:44:20,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:44:20,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:44:20,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:44:20,952 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:44:20,952 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:44:20,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:44:20,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:20,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:44:20,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:20,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:20,953 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:20,953 INFO L185 Difference]: Start difference. First operand has 658 places, 632 transitions, 33751 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:44:20,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 640 transitions, 35147 flow [2021-03-24 13:44:22,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 658 places, 640 transitions, 34502 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-24 13:44:22,653 INFO L241 Difference]: Finished difference. Result has 659 places, 626 transitions, 33435 flow [2021-03-24 13:44:22,653 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=33114, PETRI_DIFFERENCE_MINUEND_PLACES=651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=316, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=33435, PETRI_PLACES=659, PETRI_TRANSITIONS=626} [2021-03-24 13:44:22,653 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 621 predicate places. [2021-03-24 13:44:22,653 INFO L480 AbstractCegarLoop]: Abstraction has has 659 places, 626 transitions, 33435 flow [2021-03-24 13:44:22,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:22,653 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:22,653 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:22,653 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-03-24 13:44:22,653 INFO L428 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:22,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:22,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1425626012, now seen corresponding path program 171 times [2021-03-24 13:44:22,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:22,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680346744] [2021-03-24 13:44:22,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:22,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:22,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:22,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:22,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:22,663 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:44:22,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:44:22,674 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:44:22,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:44:22,691 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:44:22,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:44:22,713 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:44:22,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:44:22,730 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:44:22,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:44:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:22,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680346744] [2021-03-24 13:44:22,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:22,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:44:22,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20778692] [2021-03-24 13:44:22,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:44:22,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:22,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:44:22,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:44:22,747 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:44:22,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 659 places, 626 transitions, 33435 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:22,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:22,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:44:22,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:24,116 INFO L129 PetriNetUnfolder]: 293/3669 cut-off events. [2021-03-24 13:44:24,116 INFO L130 PetriNetUnfolder]: For 211520/211708 co-relation queries the response was YES. [2021-03-24 13:44:24,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34036 conditions, 3669 events. 293/3669 cut-off events. For 211520/211708 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 54940 event pairs, 20 based on Foata normal form. 16/3630 useless extension candidates. Maximal degree in co-relation 33857. Up to 692 conditions per place. [2021-03-24 13:44:24,166 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 319 selfloop transitions, 309 changer transitions 2/644 dead transitions. [2021-03-24 13:44:24,166 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 662 places, 644 transitions, 35328 flow [2021-03-24 13:44:24,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:44:24,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:44:24,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:44:24,167 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:44:24,167 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:44:24,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:44:24,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:24,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:44:24,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:24,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:24,168 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:24,168 INFO L185 Difference]: Start difference. First operand has 659 places, 626 transitions, 33435 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:44:24,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 662 places, 644 transitions, 35328 flow [2021-03-24 13:44:25,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 654 places, 644 transitions, 34651 flow, removed 19 selfloop flow, removed 8 redundant places. [2021-03-24 13:44:25,790 INFO L241 Difference]: Finished difference. Result has 658 places, 629 transitions, 33623 flow [2021-03-24 13:44:25,790 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=32781, PETRI_DIFFERENCE_MINUEND_PLACES=647, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=33623, PETRI_PLACES=658, PETRI_TRANSITIONS=629} [2021-03-24 13:44:25,790 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 620 predicate places. [2021-03-24 13:44:25,790 INFO L480 AbstractCegarLoop]: Abstraction has has 658 places, 629 transitions, 33623 flow [2021-03-24 13:44:25,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:25,790 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:25,790 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:25,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-03-24 13:44:25,790 INFO L428 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:25,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:25,790 INFO L82 PathProgramCache]: Analyzing trace with hash -115841564, now seen corresponding path program 172 times [2021-03-24 13:44:25,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:25,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841718417] [2021-03-24 13:44:25,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:25,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:25,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:25,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:25,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:25,800 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:44:25,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:44:25,812 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:44:25,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:44:25,829 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:44:25,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:44:25,852 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:44:25,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:44:25,870 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:44:25,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:44:25,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:25,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841718417] [2021-03-24 13:44:25,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:25,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:44:25,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111098465] [2021-03-24 13:44:25,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:44:25,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:25,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:44:25,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:44:25,888 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:44:25,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 658 places, 629 transitions, 33623 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:25,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:25,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:44:25,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:27,206 INFO L129 PetriNetUnfolder]: 292/3657 cut-off events. [2021-03-24 13:44:27,206 INFO L130 PetriNetUnfolder]: For 209463/209651 co-relation queries the response was YES. [2021-03-24 13:44:27,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33611 conditions, 3657 events. 292/3657 cut-off events. For 209463/209651 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 54709 event pairs, 21 based on Foata normal form. 16/3617 useless extension candidates. Maximal degree in co-relation 33432. Up to 692 conditions per place. [2021-03-24 13:44:27,257 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 318 selfloop transitions, 307 changer transitions 3/642 dead transitions. [2021-03-24 13:44:27,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 642 transitions, 35251 flow [2021-03-24 13:44:27,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:44:27,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:44:27,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:44:27,258 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:44:27,258 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:44:27,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:44:27,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:27,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:44:27,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:27,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:27,259 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:27,259 INFO L185 Difference]: Start difference. First operand has 658 places, 629 transitions, 33623 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:44:27,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 642 transitions, 35251 flow [2021-03-24 13:44:28,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 659 places, 642 transitions, 34675 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-03-24 13:44:28,978 INFO L241 Difference]: Finished difference. Result has 661 places, 627 transitions, 33589 flow [2021-03-24 13:44:28,978 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=33055, PETRI_DIFFERENCE_MINUEND_PLACES=652, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=33589, PETRI_PLACES=661, PETRI_TRANSITIONS=627} [2021-03-24 13:44:28,978 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 623 predicate places. [2021-03-24 13:44:28,978 INFO L480 AbstractCegarLoop]: Abstraction has has 661 places, 627 transitions, 33589 flow [2021-03-24 13:44:28,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:28,978 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:28,978 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:28,978 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-03-24 13:44:28,978 INFO L428 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:28,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:28,978 INFO L82 PathProgramCache]: Analyzing trace with hash -781931664, now seen corresponding path program 173 times [2021-03-24 13:44:28,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:28,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367353203] [2021-03-24 13:44:28,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:28,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:28,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:28,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:28,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:28,988 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:44:28,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:44:29,007 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:44:29,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:44:29,024 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:44:29,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:44:29,042 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:44:29,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:44:29,059 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:44:29,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:44:29,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:29,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367353203] [2021-03-24 13:44:29,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:29,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:44:29,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174205707] [2021-03-24 13:44:29,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:44:29,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:29,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:44:29,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:44:29,077 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:44:29,077 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 661 places, 627 transitions, 33589 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:29,077 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:29,077 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:44:29,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:30,379 INFO L129 PetriNetUnfolder]: 291/3648 cut-off events. [2021-03-24 13:44:30,380 INFO L130 PetriNetUnfolder]: For 208965/209153 co-relation queries the response was YES. [2021-03-24 13:44:30,423 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33593 conditions, 3648 events. 291/3648 cut-off events. For 208965/209153 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 54567 event pairs, 20 based on Foata normal form. 16/3609 useless extension candidates. Maximal degree in co-relation 33414. Up to 692 conditions per place. [2021-03-24 13:44:30,430 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 311 selfloop transitions, 311 changer transitions 3/639 dead transitions. [2021-03-24 13:44:30,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 667 places, 639 transitions, 35181 flow [2021-03-24 13:44:30,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:44:30,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:44:30,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:44:30,432 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:44:30,432 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:44:30,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:44:30,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:30,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:44:30,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:30,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:30,433 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:30,433 INFO L185 Difference]: Start difference. First operand has 661 places, 627 transitions, 33589 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:44:30,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 667 places, 639 transitions, 35181 flow [2021-03-24 13:44:32,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 639 transitions, 34569 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 13:44:32,116 INFO L241 Difference]: Finished difference. Result has 663 places, 624 transitions, 33481 flow [2021-03-24 13:44:32,117 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=32985, PETRI_DIFFERENCE_MINUEND_PLACES=655, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=33481, PETRI_PLACES=663, PETRI_TRANSITIONS=624} [2021-03-24 13:44:32,117 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 625 predicate places. [2021-03-24 13:44:32,117 INFO L480 AbstractCegarLoop]: Abstraction has has 663 places, 624 transitions, 33481 flow [2021-03-24 13:44:32,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:32,117 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:32,117 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:32,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-03-24 13:44:32,117 INFO L428 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:32,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:32,117 INFO L82 PathProgramCache]: Analyzing trace with hash -2063953880, now seen corresponding path program 174 times [2021-03-24 13:44:32,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:32,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087822882] [2021-03-24 13:44:32,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:32,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:32,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:32,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:32,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:32,127 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:44:32,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:44:32,138 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:44:32,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:44:32,155 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:44:32,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:44:32,168 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:44:32,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:44:32,186 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:44:32,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:44:32,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:32,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087822882] [2021-03-24 13:44:32,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:32,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:44:32,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537831154] [2021-03-24 13:44:32,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:44:32,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:32,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:44:32,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:44:32,203 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:44:32,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 624 transitions, 33481 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:32,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:32,204 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:44:32,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:33,479 INFO L129 PetriNetUnfolder]: 290/3637 cut-off events. [2021-03-24 13:44:33,480 INFO L130 PetriNetUnfolder]: For 208570/208762 co-relation queries the response was YES. [2021-03-24 13:44:33,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33523 conditions, 3637 events. 290/3637 cut-off events. For 208570/208762 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 54345 event pairs, 20 based on Foata normal form. 18/3600 useless extension candidates. Maximal degree in co-relation 33344. Up to 692 conditions per place. [2021-03-24 13:44:33,530 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 313 selfloop transitions, 309 changer transitions 0/636 dead transitions. [2021-03-24 13:44:33,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 636 transitions, 35067 flow [2021-03-24 13:44:33,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:44:33,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:44:33,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:44:33,531 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:44:33,531 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:44:33,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:44:33,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:33,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:44:33,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:33,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:33,532 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:33,532 INFO L185 Difference]: Start difference. First operand has 663 places, 624 transitions, 33481 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:44:33,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 636 transitions, 35067 flow [2021-03-24 13:44:35,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 636 transitions, 34434 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-03-24 13:44:35,285 INFO L241 Difference]: Finished difference. Result has 664 places, 628 transitions, 33738 flow [2021-03-24 13:44:35,285 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=32858, PETRI_DIFFERENCE_MINUEND_PLACES=655, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=305, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=33738, PETRI_PLACES=664, PETRI_TRANSITIONS=628} [2021-03-24 13:44:35,285 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 626 predicate places. [2021-03-24 13:44:35,285 INFO L480 AbstractCegarLoop]: Abstraction has has 664 places, 628 transitions, 33738 flow [2021-03-24 13:44:35,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:35,285 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:35,285 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:35,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-03-24 13:44:35,286 INFO L428 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:35,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:35,286 INFO L82 PathProgramCache]: Analyzing trace with hash 728479540, now seen corresponding path program 175 times [2021-03-24 13:44:35,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:35,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019897990] [2021-03-24 13:44:35,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:35,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:35,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:35,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:35,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:35,296 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:44:35,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:44:35,308 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:44:35,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:44:35,325 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:44:35,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:44:35,339 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:44:35,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:44:35,356 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:44:35,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:44:35,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:35,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019897990] [2021-03-24 13:44:35,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:35,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:44:35,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691720460] [2021-03-24 13:44:35,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:44:35,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:35,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:44:35,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:44:35,374 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:44:35,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 628 transitions, 33738 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:35,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:35,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:44:35,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:36,718 INFO L129 PetriNetUnfolder]: 290/3636 cut-off events. [2021-03-24 13:44:36,718 INFO L130 PetriNetUnfolder]: For 209734/209926 co-relation queries the response was YES. [2021-03-24 13:44:36,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33560 conditions, 3636 events. 290/3636 cut-off events. For 209734/209926 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 54362 event pairs, 20 based on Foata normal form. 18/3599 useless extension candidates. Maximal degree in co-relation 33381. Up to 692 conditions per place. [2021-03-24 13:44:36,853 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 313 selfloop transitions, 303 changer transitions 6/636 dead transitions. [2021-03-24 13:44:36,853 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 671 places, 636 transitions, 35118 flow [2021-03-24 13:44:36,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:44:36,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:44:36,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:44:36,854 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:44:36,854 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:44:36,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:44:36,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:36,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:44:36,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:36,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:36,855 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:36,855 INFO L185 Difference]: Start difference. First operand has 664 places, 628 transitions, 33738 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:44:36,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 671 places, 636 transitions, 35118 flow [2021-03-24 13:44:38,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 636 transitions, 34517 flow, removed 17 selfloop flow, removed 4 redundant places. [2021-03-24 13:44:38,456 INFO L241 Difference]: Finished difference. Result has 668 places, 622 transitions, 33431 flow [2021-03-24 13:44:38,456 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=33137, PETRI_DIFFERENCE_MINUEND_PLACES=660, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=303, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=33431, PETRI_PLACES=668, PETRI_TRANSITIONS=622} [2021-03-24 13:44:38,456 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 630 predicate places. [2021-03-24 13:44:38,456 INFO L480 AbstractCegarLoop]: Abstraction has has 668 places, 622 transitions, 33431 flow [2021-03-24 13:44:38,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:38,456 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:38,457 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:38,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-03-24 13:44:38,457 INFO L428 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:38,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:38,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1832864786, now seen corresponding path program 176 times [2021-03-24 13:44:38,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:38,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50094319] [2021-03-24 13:44:38,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:38,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:38,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:38,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:38,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:38,466 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:44:38,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:44:38,477 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:44:38,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:44:38,493 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:44:38,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:44:38,505 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:44:38,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:44:38,523 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:44:38,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:44:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:38,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50094319] [2021-03-24 13:44:38,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:38,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:44:38,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523058640] [2021-03-24 13:44:38,541 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:44:38,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:38,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:44:38,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:44:38,541 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:44:38,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 668 places, 622 transitions, 33431 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:38,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:38,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:44:38,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:39,850 INFO L129 PetriNetUnfolder]: 289/3619 cut-off events. [2021-03-24 13:44:39,850 INFO L130 PetriNetUnfolder]: For 210675/210857 co-relation queries the response was YES. [2021-03-24 13:44:39,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33748 conditions, 3619 events. 289/3619 cut-off events. For 210675/210857 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 53992 event pairs, 20 based on Foata normal form. 16/3581 useless extension candidates. Maximal degree in co-relation 33568. Up to 692 conditions per place. [2021-03-24 13:44:39,900 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 337 selfloop transitions, 294 changer transitions 0/645 dead transitions. [2021-03-24 13:44:39,900 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 671 places, 645 transitions, 35603 flow [2021-03-24 13:44:39,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:44:39,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:44:39,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:44:39,901 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:44:39,901 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:44:39,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:44:39,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:39,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:44:39,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:39,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:39,902 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:39,902 INFO L185 Difference]: Start difference. First operand has 668 places, 622 transitions, 33431 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:44:39,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 671 places, 645 transitions, 35603 flow [2021-03-24 13:44:41,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 664 places, 645 transitions, 34955 flow, removed 16 selfloop flow, removed 7 redundant places. [2021-03-24 13:44:41,704 INFO L241 Difference]: Finished difference. Result has 667 places, 634 transitions, 34137 flow [2021-03-24 13:44:41,705 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=32811, PETRI_DIFFERENCE_MINUEND_PLACES=657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=34137, PETRI_PLACES=667, PETRI_TRANSITIONS=634} [2021-03-24 13:44:41,705 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 629 predicate places. [2021-03-24 13:44:41,705 INFO L480 AbstractCegarLoop]: Abstraction has has 667 places, 634 transitions, 34137 flow [2021-03-24 13:44:41,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:41,705 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:41,705 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:41,705 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-03-24 13:44:41,705 INFO L428 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:41,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:41,705 INFO L82 PathProgramCache]: Analyzing trace with hash -2046671878, now seen corresponding path program 177 times [2021-03-24 13:44:41,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:41,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015625522] [2021-03-24 13:44:41,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:41,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:41,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:41,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:41,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:41,719 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:44:41,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:44:41,731 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:44:41,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:44:41,749 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:44:41,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:44:41,772 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:44:41,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:44:41,789 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:44:41,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:44:41,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:41,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015625522] [2021-03-24 13:44:41,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:41,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:44:41,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987783543] [2021-03-24 13:44:41,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:44:41,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:41,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:44:41,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:44:41,806 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:44:41,806 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 634 transitions, 34137 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:41,806 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:41,806 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:44:41,806 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:43,140 INFO L129 PetriNetUnfolder]: 289/3616 cut-off events. [2021-03-24 13:44:43,140 INFO L130 PetriNetUnfolder]: For 209718/209896 co-relation queries the response was YES. [2021-03-24 13:44:43,183 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33432 conditions, 3616 events. 289/3616 cut-off events. For 209718/209896 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 53967 event pairs, 21 based on Foata normal form. 14/3575 useless extension candidates. Maximal degree in co-relation 33252. Up to 692 conditions per place. [2021-03-24 13:44:43,190 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 336 selfloop transitions, 293 changer transitions 2/645 dead transitions. [2021-03-24 13:44:43,190 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 645 transitions, 35625 flow [2021-03-24 13:44:43,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:44:43,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:44:43,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:44:43,191 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:44:43,191 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:44:43,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:44:43,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:43,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:44:43,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:43,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:43,192 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:43,192 INFO L185 Difference]: Start difference. First operand has 667 places, 634 transitions, 34137 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:44:43,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 645 transitions, 35625 flow [2021-03-24 13:44:44,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 670 places, 645 transitions, 34997 flow, removed 20 selfloop flow, removed 4 redundant places. [2021-03-24 13:44:44,960 INFO L241 Difference]: Finished difference. Result has 672 places, 635 transitions, 34122 flow [2021-03-24 13:44:44,960 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=33512, PETRI_DIFFERENCE_MINUEND_PLACES=663, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=290, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=34122, PETRI_PLACES=672, PETRI_TRANSITIONS=635} [2021-03-24 13:44:44,961 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 634 predicate places. [2021-03-24 13:44:44,961 INFO L480 AbstractCegarLoop]: Abstraction has has 672 places, 635 transitions, 34122 flow [2021-03-24 13:44:44,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:44,961 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:44,961 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:44,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-03-24 13:44:44,961 INFO L428 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:44,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:44,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1088162288, now seen corresponding path program 178 times [2021-03-24 13:44:44,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:44,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470103043] [2021-03-24 13:44:44,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:44,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:44,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:44,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:44,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:44,971 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:44:44,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:44:44,982 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:44:44,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:44:45,000 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:44:45,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:44:45,013 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:44:45,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:44:45,031 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:44:45,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:44:45,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:45,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470103043] [2021-03-24 13:44:45,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:45,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:44:45,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487984493] [2021-03-24 13:44:45,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:44:45,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:45,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:44:45,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:44:45,049 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:44:45,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 672 places, 635 transitions, 34122 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:45,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:45,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:44:45,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:46,396 INFO L129 PetriNetUnfolder]: 288/3608 cut-off events. [2021-03-24 13:44:46,397 INFO L130 PetriNetUnfolder]: For 211935/212113 co-relation queries the response was YES. [2021-03-24 13:44:46,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33708 conditions, 3608 events. 288/3608 cut-off events. For 211935/212113 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 53860 event pairs, 20 based on Foata normal form. 14/3568 useless extension candidates. Maximal degree in co-relation 33526. Up to 692 conditions per place. [2021-03-24 13:44:46,448 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 337 selfloop transitions, 287 changer transitions 5/643 dead transitions. [2021-03-24 13:44:46,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 678 places, 643 transitions, 35524 flow [2021-03-24 13:44:46,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:44:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:44:46,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:44:46,449 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:44:46,449 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:44:46,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:44:46,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:46,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:44:46,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:46,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:46,449 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:46,449 INFO L185 Difference]: Start difference. First operand has 672 places, 635 transitions, 34122 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:44:46,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 678 places, 643 transitions, 35524 flow [2021-03-24 13:44:48,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 643 transitions, 34980 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-03-24 13:44:48,161 INFO L241 Difference]: Finished difference. Result has 675 places, 630 transitions, 33863 flow [2021-03-24 13:44:48,161 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=33586, PETRI_DIFFERENCE_MINUEND_PLACES=667, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=33863, PETRI_PLACES=675, PETRI_TRANSITIONS=630} [2021-03-24 13:44:48,161 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 637 predicate places. [2021-03-24 13:44:48,162 INFO L480 AbstractCegarLoop]: Abstraction has has 675 places, 630 transitions, 33863 flow [2021-03-24 13:44:48,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:48,162 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:48,162 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:48,162 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-03-24 13:44:48,162 INFO L428 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:48,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:48,162 INFO L82 PathProgramCache]: Analyzing trace with hash -2133719628, now seen corresponding path program 179 times [2021-03-24 13:44:48,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:48,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061413537] [2021-03-24 13:44:48,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:48,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:48,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:48,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:48,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:48,172 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:44:48,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:44:48,182 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:44:48,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:44:48,201 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:44:48,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:44:48,224 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:44:48,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:44:48,242 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:44:48,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:44:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:48,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061413537] [2021-03-24 13:44:48,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:48,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:44:48,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386705658] [2021-03-24 13:44:48,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:44:48,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:48,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:44:48,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:44:48,260 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:44:48,260 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 630 transitions, 33863 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:48,260 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:48,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:44:48,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:49,590 INFO L129 PetriNetUnfolder]: 287/3592 cut-off events. [2021-03-24 13:44:49,590 INFO L130 PetriNetUnfolder]: For 210931/211113 co-relation queries the response was YES. [2021-03-24 13:44:49,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33577 conditions, 3592 events. 287/3592 cut-off events. For 210931/211113 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 53572 event pairs, 20 based on Foata normal form. 16/3555 useless extension candidates. Maximal degree in co-relation 33395. Up to 692 conditions per place. [2021-03-24 13:44:49,642 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 335 selfloop transitions, 286 changer transitions 3/638 dead transitions. [2021-03-24 13:44:49,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 680 places, 638 transitions, 35255 flow [2021-03-24 13:44:49,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:44:49,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:44:49,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-03-24 13:44:49,643 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2021-03-24 13:44:49,643 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-03-24 13:44:49,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-03-24 13:44:49,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:49,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-03-24 13:44:49,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:49,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:49,644 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:49,644 INFO L185 Difference]: Start difference. First operand has 675 places, 630 transitions, 33863 flow. Second operand 8 states and 466 transitions. [2021-03-24 13:44:49,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 680 places, 638 transitions, 35255 flow [2021-03-24 13:44:51,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 638 transitions, 34669 flow, removed 11 selfloop flow, removed 6 redundant places. [2021-03-24 13:44:51,455 INFO L241 Difference]: Finished difference. Result has 675 places, 627 transitions, 33713 flow [2021-03-24 13:44:51,456 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=33293, PETRI_DIFFERENCE_MINUEND_PLACES=667, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=33713, PETRI_PLACES=675, PETRI_TRANSITIONS=627} [2021-03-24 13:44:51,456 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 637 predicate places. [2021-03-24 13:44:51,456 INFO L480 AbstractCegarLoop]: Abstraction has has 675 places, 627 transitions, 33713 flow [2021-03-24 13:44:51,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:51,456 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:51,456 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:51,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-03-24 13:44:51,456 INFO L428 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:51,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:51,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1267481168, now seen corresponding path program 180 times [2021-03-24 13:44:51,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:51,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858477751] [2021-03-24 13:44:51,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:51,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:51,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:51,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:51,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:51,468 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:44:51,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:44:51,480 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:44:51,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:44:51,497 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:44:51,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:44:51,521 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:44:51,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:44:51,538 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:44:51,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:44:51,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:51,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858477751] [2021-03-24 13:44:51,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:51,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:44:51,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866243236] [2021-03-24 13:44:51,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:44:51,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:51,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:44:51,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:44:51,556 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:44:51,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 627 transitions, 33713 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:51,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:51,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:44:51,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:52,882 INFO L129 PetriNetUnfolder]: 286/3581 cut-off events. [2021-03-24 13:44:52,883 INFO L130 PetriNetUnfolder]: For 207238/207384 co-relation queries the response was YES. [2021-03-24 13:44:52,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33133 conditions, 3581 events. 286/3581 cut-off events. For 207238/207384 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 53328 event pairs, 20 based on Foata normal form. 16/3544 useless extension candidates. Maximal degree in co-relation 32952. Up to 692 conditions per place. [2021-03-24 13:44:52,936 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 330 selfloop transitions, 286 changer transitions 4/634 dead transitions. [2021-03-24 13:44:52,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 680 places, 634 transitions, 35075 flow [2021-03-24 13:44:52,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:44:52,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:44:52,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-03-24 13:44:52,937 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2021-03-24 13:44:52,937 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-03-24 13:44:52,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-03-24 13:44:52,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:52,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-03-24 13:44:52,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:52,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:52,938 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:52,938 INFO L185 Difference]: Start difference. First operand has 675 places, 627 transitions, 33713 flow. Second operand 8 states and 466 transitions. [2021-03-24 13:44:52,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 680 places, 634 transitions, 35075 flow [2021-03-24 13:44:54,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 634 transitions, 34619 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-24 13:44:54,776 INFO L241 Difference]: Finished difference. Result has 675 places, 623 transitions, 33664 flow [2021-03-24 13:44:54,776 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=33263, PETRI_DIFFERENCE_MINUEND_PLACES=667, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=33664, PETRI_PLACES=675, PETRI_TRANSITIONS=623} [2021-03-24 13:44:54,777 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 637 predicate places. [2021-03-24 13:44:54,777 INFO L480 AbstractCegarLoop]: Abstraction has has 675 places, 623 transitions, 33664 flow [2021-03-24 13:44:54,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:54,777 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:54,777 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:54,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-03-24 13:44:54,777 INFO L428 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:54,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:54,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1603833174, now seen corresponding path program 181 times [2021-03-24 13:44:54,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:54,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982532476] [2021-03-24 13:44:54,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:54,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:54,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:54,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:54,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:54,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:54,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:44:54,801 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:44:54,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:44:54,825 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:44:54,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:44:54,845 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:44:54,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:44:54,865 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:44:54,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:44:54,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:54,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982532476] [2021-03-24 13:44:54,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:54,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:44:54,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554526509] [2021-03-24 13:44:54,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:44:54,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:54,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:44:54,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:44:54,883 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:44:54,883 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 623 transitions, 33664 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:54,884 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:54,884 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:44:54,884 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:56,204 INFO L129 PetriNetUnfolder]: 303/3838 cut-off events. [2021-03-24 13:44:56,204 INFO L130 PetriNetUnfolder]: For 223128/223229 co-relation queries the response was YES. [2021-03-24 13:44:56,252 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35769 conditions, 3838 events. 303/3838 cut-off events. For 223128/223229 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 58027 event pairs, 10 based on Foata normal form. 3/3782 useless extension candidates. Maximal degree in co-relation 35590. Up to 685 conditions per place. [2021-03-24 13:44:56,259 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 429 selfloop transitions, 304 changer transitions 2/749 dead transitions. [2021-03-24 13:44:56,260 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 680 places, 749 transitions, 41405 flow [2021-03-24 13:44:56,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:44:56,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:44:56,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:44:56,260 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:44:56,261 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:44:56,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:44:56,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:56,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:44:56,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:56,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:56,261 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:56,261 INFO L185 Difference]: Start difference. First operand has 675 places, 623 transitions, 33664 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:44:56,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 680 places, 749 transitions, 41405 flow [2021-03-24 13:44:58,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 675 places, 749 transitions, 40718 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-03-24 13:44:58,222 INFO L241 Difference]: Finished difference. Result has 681 places, 664 transitions, 36377 flow [2021-03-24 13:44:58,223 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=33089, PETRI_DIFFERENCE_MINUEND_PLACES=668, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=36377, PETRI_PLACES=681, PETRI_TRANSITIONS=664} [2021-03-24 13:44:58,223 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 643 predicate places. [2021-03-24 13:44:58,223 INFO L480 AbstractCegarLoop]: Abstraction has has 681 places, 664 transitions, 36377 flow [2021-03-24 13:44:58,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:58,223 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:58,223 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:58,223 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-03-24 13:44:58,223 INFO L428 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:58,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:58,223 INFO L82 PathProgramCache]: Analyzing trace with hash -2009725322, now seen corresponding path program 182 times [2021-03-24 13:44:58,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:58,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708763457] [2021-03-24 13:44:58,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:58,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:58,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:58,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:58,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:58,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:58,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:44:58,241 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:44:58,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:44:58,256 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:44:58,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:44:58,269 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:44:58,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:44:58,286 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:44:58,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:44:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:58,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708763457] [2021-03-24 13:44:58,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:58,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:44:58,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766132219] [2021-03-24 13:44:58,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:44:58,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:58,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:44:58,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:44:58,303 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:44:58,303 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 664 transitions, 36377 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:58,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:58,303 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:44:58,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:59,831 INFO L129 PetriNetUnfolder]: 308/3928 cut-off events. [2021-03-24 13:44:59,831 INFO L130 PetriNetUnfolder]: For 236841/236947 co-relation queries the response was YES. [2021-03-24 13:44:59,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36844 conditions, 3928 events. 308/3928 cut-off events. For 236841/236947 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 59687 event pairs, 13 based on Foata normal form. 10/3882 useless extension candidates. Maximal degree in co-relation 36660. Up to 681 conditions per place. [2021-03-24 13:44:59,888 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 397 selfloop transitions, 316 changer transitions 2/729 dead transitions. [2021-03-24 13:44:59,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 729 transitions, 40734 flow [2021-03-24 13:44:59,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:44:59,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:44:59,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:44:59,889 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:44:59,889 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:44:59,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:44:59,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:59,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:44:59,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:59,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:59,890 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:59,890 INFO L185 Difference]: Start difference. First operand has 681 places, 664 transitions, 36377 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:44:59,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 687 places, 729 transitions, 40734 flow [2021-03-24 13:45:01,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 684 places, 729 transitions, 40467 flow, removed 74 selfloop flow, removed 3 redundant places. [2021-03-24 13:45:01,872 INFO L241 Difference]: Finished difference. Result has 689 places, 678 transitions, 37692 flow [2021-03-24 13:45:01,872 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=36131, PETRI_DIFFERENCE_MINUEND_PLACES=677, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=302, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=37692, PETRI_PLACES=689, PETRI_TRANSITIONS=678} [2021-03-24 13:45:01,873 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 651 predicate places. [2021-03-24 13:45:01,873 INFO L480 AbstractCegarLoop]: Abstraction has has 689 places, 678 transitions, 37692 flow [2021-03-24 13:45:01,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:01,873 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:45:01,873 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:45:01,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-03-24 13:45:01,873 INFO L428 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:45:01,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:45:01,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1139899074, now seen corresponding path program 183 times [2021-03-24 13:45:01,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:45:01,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475125614] [2021-03-24 13:45:01,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:45:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:45:01,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:01,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:45:01,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:01,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:45:01,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:01,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:45:01,888 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:45:01,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:45:01,898 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:45:01,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:45:01,911 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:45:01,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:45:01,928 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:45:01,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:45:01,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:45:01,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475125614] [2021-03-24 13:45:01,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:45:01,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:45:01,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075207524] [2021-03-24 13:45:01,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:45:01,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:45:01,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:45:01,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:45:01,945 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:45:01,945 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 689 places, 678 transitions, 37692 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:01,945 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:45:01,945 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:45:01,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:45:03,582 INFO L129 PetriNetUnfolder]: 308/3947 cut-off events. [2021-03-24 13:45:03,582 INFO L130 PetriNetUnfolder]: For 245900/246003 co-relation queries the response was YES. [2021-03-24 13:45:03,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37428 conditions, 3947 events. 308/3947 cut-off events. For 245900/246003 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 60016 event pairs, 17 based on Foata normal form. 7/3897 useless extension candidates. Maximal degree in co-relation 37241. Up to 732 conditions per place. [2021-03-24 13:45:03,637 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 438 selfloop transitions, 306 changer transitions 2/760 dead transitions. [2021-03-24 13:45:03,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 695 places, 760 transitions, 43079 flow [2021-03-24 13:45:03,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:45:03,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:45:03,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:45:03,638 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:45:03,638 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:45:03,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:45:03,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:45:03,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:45:03,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:03,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:03,638 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:03,638 INFO L185 Difference]: Start difference. First operand has 689 places, 678 transitions, 37692 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:45:03,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 695 places, 760 transitions, 43079 flow [2021-03-24 13:45:05,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 691 places, 760 transitions, 42583 flow, removed 35 selfloop flow, removed 4 redundant places. [2021-03-24 13:45:05,794 INFO L241 Difference]: Finished difference. Result has 697 places, 704 transitions, 39599 flow [2021-03-24 13:45:05,794 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=37220, PETRI_DIFFERENCE_MINUEND_PLACES=684, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=39599, PETRI_PLACES=697, PETRI_TRANSITIONS=704} [2021-03-24 13:45:05,795 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 659 predicate places. [2021-03-24 13:45:05,795 INFO L480 AbstractCegarLoop]: Abstraction has has 697 places, 704 transitions, 39599 flow [2021-03-24 13:45:05,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:05,795 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:45:05,795 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:45:05,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-03-24 13:45:05,795 INFO L428 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:45:05,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:45:05,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1482690900, now seen corresponding path program 184 times [2021-03-24 13:45:05,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:45:05,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664788500] [2021-03-24 13:45:05,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:45:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:45:05,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:05,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:45:05,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:05,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:45:05,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:05,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:45:05,811 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:45:05,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:45:05,820 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:45:05,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:45:05,833 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:45:05,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:45:05,850 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:45:05,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:45:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:45:05,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664788500] [2021-03-24 13:45:05,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:45:05,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:45:05,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306563927] [2021-03-24 13:45:05,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:45:05,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:45:05,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:45:05,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:45:05,868 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:45:05,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 704 transitions, 39599 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:05,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:45:05,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:45:05,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:45:07,535 INFO L129 PetriNetUnfolder]: 307/3937 cut-off events. [2021-03-24 13:45:07,536 INFO L130 PetriNetUnfolder]: For 255386/255497 co-relation queries the response was YES. [2021-03-24 13:45:07,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37877 conditions, 3937 events. 307/3937 cut-off events. For 255386/255497 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 59792 event pairs, 13 based on Foata normal form. 13/3893 useless extension candidates. Maximal degree in co-relation 37686. Up to 681 conditions per place. [2021-03-24 13:45:07,593 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 395 selfloop transitions, 331 changer transitions 0/740 dead transitions. [2021-03-24 13:45:07,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 703 places, 740 transitions, 42732 flow [2021-03-24 13:45:07,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:45:07,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:45:07,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:45:07,594 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:45:07,595 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:45:07,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:45:07,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:45:07,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:45:07,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:07,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:07,595 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:07,595 INFO L185 Difference]: Start difference. First operand has 697 places, 704 transitions, 39599 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:45:07,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 703 places, 740 transitions, 42732 flow [2021-03-24 13:45:09,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 699 places, 740 transitions, 42400 flow, removed 59 selfloop flow, removed 4 redundant places. [2021-03-24 13:45:09,787 INFO L241 Difference]: Finished difference. Result has 702 places, 731 transitions, 41636 flow [2021-03-24 13:45:09,787 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=39304, PETRI_DIFFERENCE_MINUEND_PLACES=692, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=41636, PETRI_PLACES=702, PETRI_TRANSITIONS=731} [2021-03-24 13:45:09,787 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 664 predicate places. [2021-03-24 13:45:09,787 INFO L480 AbstractCegarLoop]: Abstraction has has 702 places, 731 transitions, 41636 flow [2021-03-24 13:45:09,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:09,787 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:45:09,788 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:45:09,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-03-24 13:45:09,788 INFO L428 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:45:09,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:45:09,788 INFO L82 PathProgramCache]: Analyzing trace with hash 797139098, now seen corresponding path program 185 times [2021-03-24 13:45:09,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:45:09,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784731687] [2021-03-24 13:45:09,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:45:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:45:09,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:09,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:45:09,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:09,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:45:09,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:09,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:45:09,803 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:45:09,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:45:09,820 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:45:09,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:45:09,843 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:45:09,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:45:09,860 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:45:09,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:45:09,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:45:09,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784731687] [2021-03-24 13:45:09,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:45:09,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:45:09,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538768465] [2021-03-24 13:45:09,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:45:09,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:45:09,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:45:09,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:45:09,878 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:45:09,878 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 731 transitions, 41636 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:09,878 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:45:09,878 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:45:09,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:45:11,569 INFO L129 PetriNetUnfolder]: 307/3936 cut-off events. [2021-03-24 13:45:11,569 INFO L130 PetriNetUnfolder]: For 263701/263812 co-relation queries the response was YES. [2021-03-24 13:45:11,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38302 conditions, 3936 events. 307/3936 cut-off events. For 263701/263812 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 59764 event pairs, 17 based on Foata normal form. 11/3889 useless extension candidates. Maximal degree in co-relation 38110. Up to 732 conditions per place. [2021-03-24 13:45:11,628 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 459 selfloop transitions, 319 changer transitions 0/792 dead transitions. [2021-03-24 13:45:11,628 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 709 places, 792 transitions, 46191 flow [2021-03-24 13:45:11,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:45:11,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:45:11,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:45:11,632 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:45:11,632 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:45:11,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:45:11,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:45:11,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:45:11,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:11,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:11,633 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:11,633 INFO L185 Difference]: Start difference. First operand has 702 places, 731 transitions, 41636 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:45:11,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 709 places, 792 transitions, 46191 flow [2021-03-24 13:45:14,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 707 places, 792 transitions, 45690 flow, removed 95 selfloop flow, removed 2 redundant places. [2021-03-24 13:45:14,034 INFO L241 Difference]: Finished difference. Result has 711 places, 746 transitions, 42892 flow [2021-03-24 13:45:14,035 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=41191, PETRI_DIFFERENCE_MINUEND_PLACES=700, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=42892, PETRI_PLACES=711, PETRI_TRANSITIONS=746} [2021-03-24 13:45:14,035 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 673 predicate places. [2021-03-24 13:45:14,035 INFO L480 AbstractCegarLoop]: Abstraction has has 711 places, 746 transitions, 42892 flow [2021-03-24 13:45:14,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:14,035 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:45:14,035 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:45:14,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-03-24 13:45:14,035 INFO L428 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:45:14,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:45:14,035 INFO L82 PathProgramCache]: Analyzing trace with hash 2093644802, now seen corresponding path program 186 times [2021-03-24 13:45:14,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:45:14,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022580804] [2021-03-24 13:45:14,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:45:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:45:14,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:14,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:45:14,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:14,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:45:14,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:14,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:45:14,054 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:45:14,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:45:14,071 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:45:14,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:45:14,095 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:45:14,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:45:14,113 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:45:14,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:45:14,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:45:14,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022580804] [2021-03-24 13:45:14,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:45:14,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:45:14,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490763918] [2021-03-24 13:45:14,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:45:14,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:45:14,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:45:14,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:45:14,130 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:45:14,131 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 746 transitions, 42892 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:14,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:45:14,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:45:14,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:45:15,898 INFO L129 PetriNetUnfolder]: 307/3935 cut-off events. [2021-03-24 13:45:15,898 INFO L130 PetriNetUnfolder]: For 270753/270865 co-relation queries the response was YES. [2021-03-24 13:45:15,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38871 conditions, 3935 events. 307/3935 cut-off events. For 270753/270865 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 59817 event pairs, 13 based on Foata normal form. 13/3891 useless extension candidates. Maximal degree in co-relation 38675. Up to 681 conditions per place. [2021-03-24 13:45:15,957 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 423 selfloop transitions, 330 changer transitions 0/767 dead transitions. [2021-03-24 13:45:15,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 718 places, 767 transitions, 45280 flow [2021-03-24 13:45:15,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:45:15,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:45:15,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:45:15,958 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:45:15,958 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:45:15,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:45:15,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:45:15,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:45:15,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:15,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:15,959 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:15,959 INFO L185 Difference]: Start difference. First operand has 711 places, 746 transitions, 42892 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:45:15,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 718 places, 767 transitions, 45280 flow [2021-03-24 13:45:18,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 717 places, 767 transitions, 45014 flow, removed 56 selfloop flow, removed 1 redundant places. [2021-03-24 13:45:18,334 INFO L241 Difference]: Finished difference. Result has 719 places, 752 transitions, 43683 flow [2021-03-24 13:45:18,334 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=42626, PETRI_DIFFERENCE_MINUEND_PLACES=710, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=746, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=324, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=43683, PETRI_PLACES=719, PETRI_TRANSITIONS=752} [2021-03-24 13:45:18,334 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 681 predicate places. [2021-03-24 13:45:18,334 INFO L480 AbstractCegarLoop]: Abstraction has has 719 places, 752 transitions, 43683 flow [2021-03-24 13:45:18,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:18,335 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:45:18,335 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:45:18,335 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-03-24 13:45:18,335 INFO L428 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:45:18,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:45:18,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1438270516, now seen corresponding path program 187 times [2021-03-24 13:45:18,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:45:18,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100549572] [2021-03-24 13:45:18,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:45:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:45:18,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:18,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:45:18,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:18,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:45:18,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:18,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:45:18,355 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:45:18,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:45:18,370 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:45:18,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:45:18,383 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:45:18,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:45:18,401 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:45:18,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:45:18,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:45:18,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100549572] [2021-03-24 13:45:18,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:45:18,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:45:18,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81686850] [2021-03-24 13:45:18,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:45:18,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:45:18,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:45:18,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:45:18,419 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:45:18,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 719 places, 752 transitions, 43683 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:18,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:45:18,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:45:18,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:45:20,124 INFO L129 PetriNetUnfolder]: 307/3934 cut-off events. [2021-03-24 13:45:20,125 INFO L130 PetriNetUnfolder]: For 277341/277455 co-relation queries the response was YES. [2021-03-24 13:45:20,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39585 conditions, 3934 events. 307/3934 cut-off events. For 277341/277455 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 59785 event pairs, 13 based on Foata normal form. 14/3891 useless extension candidates. Maximal degree in co-relation 39387. Up to 681 conditions per place. [2021-03-24 13:45:20,184 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 424 selfloop transitions, 327 changer transitions 3/768 dead transitions. [2021-03-24 13:45:20,184 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 768 transitions, 45793 flow [2021-03-24 13:45:20,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:45:20,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:45:20,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:45:20,185 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:45:20,185 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:45:20,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:45:20,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:45:20,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:45:20,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:20,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:20,186 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:20,186 INFO L185 Difference]: Start difference. First operand has 719 places, 752 transitions, 43683 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:45:20,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 768 transitions, 45793 flow [2021-03-24 13:45:22,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 722 places, 768 transitions, 45138 flow, removed 34 selfloop flow, removed 4 redundant places. [2021-03-24 13:45:22,561 INFO L241 Difference]: Finished difference. Result has 724 places, 750 transitions, 43602 flow [2021-03-24 13:45:22,561 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=43028, PETRI_DIFFERENCE_MINUEND_PLACES=715, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=43602, PETRI_PLACES=724, PETRI_TRANSITIONS=750} [2021-03-24 13:45:22,561 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 686 predicate places. [2021-03-24 13:45:22,561 INFO L480 AbstractCegarLoop]: Abstraction has has 724 places, 750 transitions, 43602 flow [2021-03-24 13:45:22,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:22,561 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:45:22,561 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:45:22,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-03-24 13:45:22,562 INFO L428 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:45:22,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:45:22,562 INFO L82 PathProgramCache]: Analyzing trace with hash -22014620, now seen corresponding path program 188 times [2021-03-24 13:45:22,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:45:22,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813668529] [2021-03-24 13:45:22,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:45:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:45:22,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:22,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:45:22,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:22,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:45:22,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:22,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:45:22,578 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:45:22,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:45:22,587 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:45:22,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:45:22,601 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:45:22,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:45:22,619 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:45:22,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:45:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:45:22,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813668529] [2021-03-24 13:45:22,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:45:22,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:45:22,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379221369] [2021-03-24 13:45:22,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:45:22,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:45:22,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:45:22,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:45:22,636 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:45:22,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 724 places, 750 transitions, 43602 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:22,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:45:22,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:45:22,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:45:24,396 INFO L129 PetriNetUnfolder]: 306/3923 cut-off events. [2021-03-24 13:45:24,396 INFO L130 PetriNetUnfolder]: For 279510/279624 co-relation queries the response was YES. [2021-03-24 13:45:24,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39902 conditions, 3923 events. 306/3923 cut-off events. For 279510/279624 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 59595 event pairs, 13 based on Foata normal form. 14/3881 useless extension candidates. Maximal degree in co-relation 39703. Up to 681 conditions per place. [2021-03-24 13:45:24,459 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 398 selfloop transitions, 347 changer transitions 0/759 dead transitions. [2021-03-24 13:45:24,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 730 places, 759 transitions, 45364 flow [2021-03-24 13:45:24,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:45:24,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:45:24,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:45:24,460 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:45:24,460 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:45:24,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:45:24,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:45:24,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:45:24,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:24,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:24,461 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:24,461 INFO L185 Difference]: Start difference. First operand has 724 places, 750 transitions, 43602 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:45:24,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 730 places, 759 transitions, 45364 flow [2021-03-24 13:45:27,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 725 places, 759 transitions, 44703 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-03-24 13:45:27,039 INFO L241 Difference]: Finished difference. Result has 726 places, 750 transitions, 43646 flow [2021-03-24 13:45:27,039 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=42949, PETRI_DIFFERENCE_MINUEND_PLACES=718, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=43646, PETRI_PLACES=726, PETRI_TRANSITIONS=750} [2021-03-24 13:45:27,039 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 688 predicate places. [2021-03-24 13:45:27,039 INFO L480 AbstractCegarLoop]: Abstraction has has 726 places, 750 transitions, 43646 flow [2021-03-24 13:45:27,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:27,039 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:45:27,039 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:45:27,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-03-24 13:45:27,040 INFO L428 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:45:27,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:45:27,040 INFO L82 PathProgramCache]: Analyzing trace with hash 2126781916, now seen corresponding path program 189 times [2021-03-24 13:45:27,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:45:27,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330773654] [2021-03-24 13:45:27,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:45:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:45:27,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:27,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:45:27,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:27,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:45:27,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:27,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:45:27,056 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:45:27,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:45:27,065 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:45:27,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:45:27,087 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:45:27,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:45:27,105 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:45:27,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:45:27,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:45:27,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330773654] [2021-03-24 13:45:27,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:45:27,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:45:27,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140425357] [2021-03-24 13:45:27,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:45:27,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:45:27,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:45:27,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:45:27,124 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:45:27,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 726 places, 750 transitions, 43646 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:27,124 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:45:27,124 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:45:27,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:45:28,884 INFO L129 PetriNetUnfolder]: 306/3922 cut-off events. [2021-03-24 13:45:28,884 INFO L130 PetriNetUnfolder]: For 279379/279492 co-relation queries the response was YES. [2021-03-24 13:45:28,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39929 conditions, 3922 events. 306/3922 cut-off events. For 279379/279492 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 59581 event pairs, 13 based on Foata normal form. 14/3880 useless extension candidates. Maximal degree in co-relation 39730. Up to 681 conditions per place. [2021-03-24 13:45:28,947 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 401 selfloop transitions, 344 changer transitions 0/759 dead transitions. [2021-03-24 13:45:28,948 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 733 places, 759 transitions, 45408 flow [2021-03-24 13:45:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:45:28,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:45:28,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:45:28,948 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:45:28,949 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:45:28,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:45:28,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:45:28,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:45:28,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:28,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:28,949 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:28,949 INFO L185 Difference]: Start difference. First operand has 726 places, 750 transitions, 43646 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:45:28,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 733 places, 759 transitions, 45408 flow [2021-03-24 13:45:31,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 731 places, 759 transitions, 44948 flow, removed 18 selfloop flow, removed 2 redundant places. [2021-03-24 13:45:31,443 INFO L241 Difference]: Finished difference. Result has 732 places, 750 transitions, 43877 flow [2021-03-24 13:45:31,443 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=43186, PETRI_DIFFERENCE_MINUEND_PLACES=724, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=43877, PETRI_PLACES=732, PETRI_TRANSITIONS=750} [2021-03-24 13:45:31,443 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 694 predicate places. [2021-03-24 13:45:31,443 INFO L480 AbstractCegarLoop]: Abstraction has has 732 places, 750 transitions, 43877 flow [2021-03-24 13:45:31,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:31,443 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:45:31,443 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:45:31,443 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-03-24 13:45:31,443 INFO L428 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:45:31,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:45:31,444 INFO L82 PathProgramCache]: Analyzing trace with hash -2138277896, now seen corresponding path program 190 times [2021-03-24 13:45:31,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:45:31,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643442776] [2021-03-24 13:45:31,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:45:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:45:31,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:31,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:45:31,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:31,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:45:31,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:31,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:45:31,458 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:45:31,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:45:31,468 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:45:31,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:45:31,489 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:45:31,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:45:31,506 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:45:31,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:45:31,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:45:31,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643442776] [2021-03-24 13:45:31,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:45:31,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:45:31,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790485087] [2021-03-24 13:45:31,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:45:31,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:45:31,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:45:31,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:45:31,524 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:45:31,524 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 750 transitions, 43877 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:31,524 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:45:31,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:45:31,524 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:45:33,286 INFO L129 PetriNetUnfolder]: 306/3921 cut-off events. [2021-03-24 13:45:33,286 INFO L130 PetriNetUnfolder]: For 283703/283814 co-relation queries the response was YES. [2021-03-24 13:45:33,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40539 conditions, 3921 events. 306/3921 cut-off events. For 283703/283814 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 59505 event pairs, 13 based on Foata normal form. 13/3877 useless extension candidates. Maximal degree in co-relation 40339. Up to 681 conditions per place. [2021-03-24 13:45:33,349 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 401 selfloop transitions, 344 changer transitions 0/759 dead transitions. [2021-03-24 13:45:33,349 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 739 places, 759 transitions, 45647 flow [2021-03-24 13:45:33,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:45:33,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:45:33,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:45:33,350 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:45:33,350 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:45:33,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:45:33,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:45:33,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:45:33,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:33,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:33,351 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:33,351 INFO L185 Difference]: Start difference. First operand has 732 places, 750 transitions, 43877 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:45:33,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 739 places, 759 transitions, 45647 flow [2021-03-24 13:45:36,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 736 places, 759 transitions, 45040 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-03-24 13:45:36,030 INFO L241 Difference]: Finished difference. Result has 737 places, 750 transitions, 43961 flow [2021-03-24 13:45:36,030 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=43270, PETRI_DIFFERENCE_MINUEND_PLACES=729, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=43961, PETRI_PLACES=737, PETRI_TRANSITIONS=750} [2021-03-24 13:45:36,030 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 699 predicate places. [2021-03-24 13:45:36,030 INFO L480 AbstractCegarLoop]: Abstraction has has 737 places, 750 transitions, 43961 flow [2021-03-24 13:45:36,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:36,030 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:45:36,031 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:45:36,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-03-24 13:45:36,031 INFO L428 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:45:36,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:45:36,031 INFO L82 PathProgramCache]: Analyzing trace with hash 370728886, now seen corresponding path program 191 times [2021-03-24 13:45:36,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:45:36,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920068761] [2021-03-24 13:45:36,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:45:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:45:36,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:36,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:45:36,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:36,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:45:36,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:36,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:45:36,046 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:45:36,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:45:36,061 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:45:36,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:45:36,081 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:45:36,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:45:36,099 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:45:36,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:45:36,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:45:36,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920068761] [2021-03-24 13:45:36,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:45:36,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:45:36,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348945455] [2021-03-24 13:45:36,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:45:36,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:45:36,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:45:36,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:45:36,118 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:45:36,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 737 places, 750 transitions, 43961 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:36,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:45:36,118 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:45:36,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:45:37,918 INFO L129 PetriNetUnfolder]: 306/3920 cut-off events. [2021-03-24 13:45:37,918 INFO L130 PetriNetUnfolder]: For 288194/288305 co-relation queries the response was YES. [2021-03-24 13:45:37,970 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40994 conditions, 3920 events. 306/3920 cut-off events. For 288194/288305 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 59472 event pairs, 13 based on Foata normal form. 13/3876 useless extension candidates. Maximal degree in co-relation 40793. Up to 681 conditions per place. [2021-03-24 13:45:37,979 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 422 selfloop transitions, 324 changer transitions 5/765 dead transitions. [2021-03-24 13:45:37,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 744 places, 765 transitions, 46051 flow [2021-03-24 13:45:37,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:45:37,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:45:37,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:45:37,980 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:45:37,980 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:45:37,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:45:37,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:45:37,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:45:37,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:37,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:37,980 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:37,980 INFO L185 Difference]: Start difference. First operand has 737 places, 750 transitions, 43961 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:45:37,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 744 places, 765 transitions, 46051 flow [2021-03-24 13:45:40,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 739 places, 765 transitions, 45375 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-24 13:45:40,600 INFO L241 Difference]: Finished difference. Result has 741 places, 748 transitions, 43843 flow [2021-03-24 13:45:40,600 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=43285, PETRI_DIFFERENCE_MINUEND_PLACES=732, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=43843, PETRI_PLACES=741, PETRI_TRANSITIONS=748} [2021-03-24 13:45:40,600 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 703 predicate places. [2021-03-24 13:45:40,601 INFO L480 AbstractCegarLoop]: Abstraction has has 741 places, 748 transitions, 43843 flow [2021-03-24 13:45:40,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:40,601 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:45:40,601 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:45:40,601 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-03-24 13:45:40,601 INFO L428 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:45:40,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:45:40,601 INFO L82 PathProgramCache]: Analyzing trace with hash -2135869928, now seen corresponding path program 192 times [2021-03-24 13:45:40,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:45:40,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933728403] [2021-03-24 13:45:40,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:45:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:45:40,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:40,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:45:40,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:40,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:45:40,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:40,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:45:40,618 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:45:40,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:45:40,634 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:45:40,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:45:40,653 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:45:40,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:45:40,670 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:45:40,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:45:40,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:45:40,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933728403] [2021-03-24 13:45:40,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:45:40,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:45:40,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175625339] [2021-03-24 13:45:40,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:45:40,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:45:40,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:45:40,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:45:40,693 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:45:40,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 741 places, 748 transitions, 43843 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:40,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:45:40,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:45:40,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:45:42,407 INFO L129 PetriNetUnfolder]: 305/3903 cut-off events. [2021-03-24 13:45:42,408 INFO L130 PetriNetUnfolder]: For 291505/291618 co-relation queries the response was YES. [2021-03-24 13:45:42,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41179 conditions, 3903 events. 305/3903 cut-off events. For 291505/291618 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 59186 event pairs, 13 based on Foata normal form. 14/3861 useless extension candidates. Maximal degree in co-relation 40976. Up to 681 conditions per place. [2021-03-24 13:45:42,468 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 417 selfloop transitions, 327 changer transitions 2/760 dead transitions. [2021-03-24 13:45:42,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 746 places, 760 transitions, 45753 flow [2021-03-24 13:45:42,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:45:42,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:45:42,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:45:42,469 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:45:42,470 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:45:42,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:45:42,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:45:42,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:45:42,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:42,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:42,470 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:42,470 INFO L185 Difference]: Start difference. First operand has 741 places, 748 transitions, 43843 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:45:42,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 746 places, 760 transitions, 45753 flow [2021-03-24 13:45:45,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 739 places, 760 transitions, 44819 flow, removed 15 selfloop flow, removed 7 redundant places. [2021-03-24 13:45:45,157 INFO L241 Difference]: Finished difference. Result has 741 places, 749 transitions, 43653 flow [2021-03-24 13:45:45,157 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=42925, PETRI_DIFFERENCE_MINUEND_PLACES=732, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=324, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=43653, PETRI_PLACES=741, PETRI_TRANSITIONS=749} [2021-03-24 13:45:45,157 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 703 predicate places. [2021-03-24 13:45:45,157 INFO L480 AbstractCegarLoop]: Abstraction has has 741 places, 749 transitions, 43653 flow [2021-03-24 13:45:45,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:45,157 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:45:45,157 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:45:45,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-03-24 13:45:45,157 INFO L428 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:45:45,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:45:45,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1924203468, now seen corresponding path program 193 times [2021-03-24 13:45:45,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:45:45,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438085532] [2021-03-24 13:45:45,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:45:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:45:45,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:45,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:45:45,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:45,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:45:45,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:45,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:45:45,174 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:45:45,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:45:45,184 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:45:45,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:45:45,198 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:45:45,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:45:45,216 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:45:45,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:45:45,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:45:45,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438085532] [2021-03-24 13:45:45,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:45:45,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:45:45,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323899162] [2021-03-24 13:45:45,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:45:45,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:45:45,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:45:45,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:45:45,235 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:45:45,235 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 741 places, 749 transitions, 43653 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:45,235 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:45:45,235 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:45:45,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:45:47,042 INFO L129 PetriNetUnfolder]: 304/3893 cut-off events. [2021-03-24 13:45:47,042 INFO L130 PetriNetUnfolder]: For 284750/284863 co-relation queries the response was YES. [2021-03-24 13:45:47,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40589 conditions, 3893 events. 304/3893 cut-off events. For 284750/284863 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 58990 event pairs, 13 based on Foata normal form. 14/3850 useless extension candidates. Maximal degree in co-relation 40386. Up to 681 conditions per place. [2021-03-24 13:45:47,108 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 397 selfloop transitions, 347 changer transitions 0/758 dead transitions. [2021-03-24 13:45:47,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 746 places, 758 transitions, 45429 flow [2021-03-24 13:45:47,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:45:47,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:45:47,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:45:47,109 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:45:47,109 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:45:47,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:45:47,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:45:47,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:45:47,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:47,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:47,110 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:47,110 INFO L185 Difference]: Start difference. First operand has 741 places, 749 transitions, 43653 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:45:47,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 746 places, 758 transitions, 45429 flow [2021-03-24 13:45:49,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 740 places, 758 transitions, 44743 flow, removed 21 selfloop flow, removed 6 redundant places. [2021-03-24 13:45:49,648 INFO L241 Difference]: Finished difference. Result has 741 places, 749 transitions, 43672 flow [2021-03-24 13:45:49,648 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=42975, PETRI_DIFFERENCE_MINUEND_PLACES=733, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=43672, PETRI_PLACES=741, PETRI_TRANSITIONS=749} [2021-03-24 13:45:49,648 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 703 predicate places. [2021-03-24 13:45:49,648 INFO L480 AbstractCegarLoop]: Abstraction has has 741 places, 749 transitions, 43672 flow [2021-03-24 13:45:49,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:49,649 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:45:49,649 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:45:49,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-03-24 13:45:49,649 INFO L428 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:45:49,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:45:49,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1919369334, now seen corresponding path program 194 times [2021-03-24 13:45:49,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:45:49,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664176422] [2021-03-24 13:45:49,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:45:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:45:49,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:49,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:45:49,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:49,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:45:49,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:49,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:45:49,664 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:45:49,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:45:49,673 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:45:49,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:45:49,686 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:45:49,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:45:49,703 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:45:49,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:45:49,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:45:49,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664176422] [2021-03-24 13:45:49,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:45:49,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:45:49,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639064610] [2021-03-24 13:45:49,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:45:49,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:45:49,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:45:49,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:45:49,721 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:45:49,722 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 741 places, 749 transitions, 43672 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:49,722 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:45:49,722 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:45:49,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:45:51,454 INFO L129 PetriNetUnfolder]: 304/3892 cut-off events. [2021-03-24 13:45:51,454 INFO L130 PetriNetUnfolder]: For 284102/284215 co-relation queries the response was YES. [2021-03-24 13:45:51,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40590 conditions, 3892 events. 304/3892 cut-off events. For 284102/284215 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 59124 event pairs, 13 based on Foata normal form. 14/3849 useless extension candidates. Maximal degree in co-relation 40388. Up to 681 conditions per place. [2021-03-24 13:45:51,517 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 392 selfloop transitions, 337 changer transitions 15/758 dead transitions. [2021-03-24 13:45:51,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 748 places, 758 transitions, 45448 flow [2021-03-24 13:45:51,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:45:51,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:45:51,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:45:51,518 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:45:51,518 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:45:51,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:45:51,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:45:51,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:45:51,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:51,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:51,519 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:51,519 INFO L185 Difference]: Start difference. First operand has 741 places, 749 transitions, 43672 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:45:51,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 748 places, 758 transitions, 45448 flow [2021-03-24 13:45:53,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 744 places, 758 transitions, 44786 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 13:45:54,076 INFO L241 Difference]: Finished difference. Result has 745 places, 734 transitions, 42588 flow [2021-03-24 13:45:54,076 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=43010, PETRI_DIFFERENCE_MINUEND_PLACES=737, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=42588, PETRI_PLACES=745, PETRI_TRANSITIONS=734} [2021-03-24 13:45:54,076 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 707 predicate places. [2021-03-24 13:45:54,076 INFO L480 AbstractCegarLoop]: Abstraction has has 745 places, 734 transitions, 42588 flow [2021-03-24 13:45:54,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:54,076 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:45:54,076 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:45:54,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-03-24 13:45:54,077 INFO L428 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:45:54,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:45:54,077 INFO L82 PathProgramCache]: Analyzing trace with hash 108441218, now seen corresponding path program 195 times [2021-03-24 13:45:54,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:45:54,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733986858] [2021-03-24 13:45:54,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:45:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:45:54,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:54,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:45:54,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:54,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:45:54,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:54,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:45:54,093 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:45:54,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:45:54,107 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:45:54,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:45:54,128 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:45:54,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:45:54,146 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:45:54,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:45:54,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:45:54,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733986858] [2021-03-24 13:45:54,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:45:54,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:45:54,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268196691] [2021-03-24 13:45:54,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:45:54,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:45:54,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:45:54,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:45:54,164 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:45:54,164 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 745 places, 734 transitions, 42588 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:54,164 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:45:54,164 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:45:54,164 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:45:55,846 INFO L129 PetriNetUnfolder]: 303/3850 cut-off events. [2021-03-24 13:45:55,847 INFO L130 PetriNetUnfolder]: For 283253/283364 co-relation queries the response was YES. [2021-03-24 13:45:55,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40306 conditions, 3850 events. 303/3850 cut-off events. For 283253/283364 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 58192 event pairs, 13 based on Foata normal form. 13/3809 useless extension candidates. Maximal degree in co-relation 40103. Up to 681 conditions per place. [2021-03-24 13:45:55,908 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 389 selfloop transitions, 338 changer transitions 2/743 dead transitions. [2021-03-24 13:45:55,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 745 places, 743 transitions, 44342 flow [2021-03-24 13:45:55,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:45:55,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:45:55,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:45:55,909 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:45:55,909 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:45:55,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:45:55,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:45:55,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:45:55,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:55,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:55,909 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:55,910 INFO L185 Difference]: Start difference. First operand has 745 places, 734 transitions, 42588 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:45:55,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 745 places, 743 transitions, 44342 flow [2021-03-24 13:45:58,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 734 places, 743 transitions, 43616 flow, removed 32 selfloop flow, removed 11 redundant places. [2021-03-24 13:45:58,296 INFO L241 Difference]: Finished difference. Result has 736 places, 734 transitions, 42627 flow [2021-03-24 13:45:58,296 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=41910, PETRI_DIFFERENCE_MINUEND_PLACES=727, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=42627, PETRI_PLACES=736, PETRI_TRANSITIONS=734} [2021-03-24 13:45:58,296 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 698 predicate places. [2021-03-24 13:45:58,296 INFO L480 AbstractCegarLoop]: Abstraction has has 736 places, 734 transitions, 42627 flow [2021-03-24 13:45:58,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:58,296 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:45:58,296 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:45:58,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-03-24 13:45:58,296 INFO L428 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:45:58,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:45:58,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1079292340, now seen corresponding path program 196 times [2021-03-24 13:45:58,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:45:58,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666665561] [2021-03-24 13:45:58,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:45:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:45:58,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:58,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:45:58,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:58,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:45:58,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:58,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:45:58,314 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:45:58,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:45:58,329 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:45:58,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:45:58,349 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:45:58,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:45:58,368 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:45:58,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:45:58,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:45:58,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666665561] [2021-03-24 13:45:58,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:45:58,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:45:58,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025964662] [2021-03-24 13:45:58,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:45:58,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:45:58,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:45:58,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:45:58,386 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:45:58,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 736 places, 734 transitions, 42627 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:58,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:45:58,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:45:58,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:45:59,957 INFO L129 PetriNetUnfolder]: 302/3840 cut-off events. [2021-03-24 13:45:59,957 INFO L130 PetriNetUnfolder]: For 265047/265160 co-relation queries the response was YES. [2021-03-24 13:46:00,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38362 conditions, 3840 events. 302/3840 cut-off events. For 265047/265160 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 58030 event pairs, 13 based on Foata normal form. 14/3801 useless extension candidates. Maximal degree in co-relation 38164. Up to 681 conditions per place. [2021-03-24 13:46:00,016 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 388 selfloop transitions, 336 changer transitions 3/741 dead transitions. [2021-03-24 13:46:00,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 742 places, 741 transitions, 44251 flow [2021-03-24 13:46:00,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:46:00,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:46:00,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:46:00,017 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:46:00,017 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:46:00,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:46:00,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:46:00,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:46:00,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:00,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:00,018 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:00,018 INFO L185 Difference]: Start difference. First operand has 736 places, 734 transitions, 42627 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:46:00,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 742 places, 741 transitions, 44251 flow [2021-03-24 13:46:02,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 737 places, 741 transitions, 43604 flow, removed 18 selfloop flow, removed 5 redundant places. [2021-03-24 13:46:02,348 INFO L241 Difference]: Finished difference. Result has 738 places, 731 transitions, 42489 flow [2021-03-24 13:46:02,348 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=41988, PETRI_DIFFERENCE_MINUEND_PLACES=730, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=42489, PETRI_PLACES=738, PETRI_TRANSITIONS=731} [2021-03-24 13:46:02,348 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 700 predicate places. [2021-03-24 13:46:02,348 INFO L480 AbstractCegarLoop]: Abstraction has has 738 places, 731 transitions, 42489 flow [2021-03-24 13:46:02,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:02,349 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:46:02,349 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:46:02,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-03-24 13:46:02,349 INFO L428 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:46:02,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:46:02,349 INFO L82 PathProgramCache]: Analyzing trace with hash -945786664, now seen corresponding path program 197 times [2021-03-24 13:46:02,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:46:02,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921355056] [2021-03-24 13:46:02,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:46:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:46:02,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:02,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:46:02,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:02,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:46:02,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:02,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:46:02,366 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:46:02,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:46:02,380 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:46:02,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:46:02,393 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:46:02,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:46:02,410 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:46:02,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:46:02,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:46:02,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921355056] [2021-03-24 13:46:02,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:46:02,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:46:02,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310727250] [2021-03-24 13:46:02,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:46:02,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:46:02,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:46:02,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:46:02,428 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:46:02,428 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 738 places, 731 transitions, 42489 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:02,428 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:46:02,428 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:46:02,428 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:46:04,049 INFO L129 PetriNetUnfolder]: 301/3829 cut-off events. [2021-03-24 13:46:04,050 INFO L130 PetriNetUnfolder]: For 263678/263791 co-relation queries the response was YES. [2021-03-24 13:46:04,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38310 conditions, 3829 events. 301/3829 cut-off events. For 263678/263791 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 57869 event pairs, 13 based on Foata normal form. 14/3790 useless extension candidates. Maximal degree in co-relation 38113. Up to 681 conditions per place. [2021-03-24 13:46:04,108 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 381 selfloop transitions, 343 changer transitions 0/738 dead transitions. [2021-03-24 13:46:04,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 744 places, 738 transitions, 44107 flow [2021-03-24 13:46:04,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:46:04,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:46:04,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:46:04,109 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:46:04,109 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:46:04,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:46:04,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:46:04,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:46:04,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:04,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:04,110 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:04,110 INFO L185 Difference]: Start difference. First operand has 738 places, 731 transitions, 42489 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:46:04,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 744 places, 738 transitions, 44107 flow [2021-03-24 13:46:06,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 739 places, 738 transitions, 43437 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 13:46:06,325 INFO L241 Difference]: Finished difference. Result has 740 places, 731 transitions, 42516 flow [2021-03-24 13:46:06,325 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=41827, PETRI_DIFFERENCE_MINUEND_PLACES=732, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=343, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=42516, PETRI_PLACES=740, PETRI_TRANSITIONS=731} [2021-03-24 13:46:06,325 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 702 predicate places. [2021-03-24 13:46:06,325 INFO L480 AbstractCegarLoop]: Abstraction has has 740 places, 731 transitions, 42516 flow [2021-03-24 13:46:06,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:06,325 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:46:06,325 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:46:06,326 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-03-24 13:46:06,326 INFO L428 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:46:06,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:46:06,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1382576628, now seen corresponding path program 198 times [2021-03-24 13:46:06,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:46:06,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296715134] [2021-03-24 13:46:06,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:46:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:46:06,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:06,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:46:06,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:06,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:46:06,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:06,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:46:06,341 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:46:06,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:46:06,354 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:46:06,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:46:06,368 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:46:06,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:46:06,385 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:46:06,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:46:06,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:46:06,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296715134] [2021-03-24 13:46:06,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:46:06,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:46:06,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296114357] [2021-03-24 13:46:06,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:46:06,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:46:06,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:46:06,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:46:06,403 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:46:06,403 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 740 places, 731 transitions, 42516 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:06,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:46:06,403 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:46:06,403 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:46:08,023 INFO L129 PetriNetUnfolder]: 301/3828 cut-off events. [2021-03-24 13:46:08,023 INFO L130 PetriNetUnfolder]: For 263673/263786 co-relation queries the response was YES. [2021-03-24 13:46:08,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38326 conditions, 3828 events. 301/3828 cut-off events. For 263673/263786 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 57843 event pairs, 13 based on Foata normal form. 14/3788 useless extension candidates. Maximal degree in co-relation 38129. Up to 681 conditions per place. [2021-03-24 13:46:08,080 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 383 selfloop transitions, 336 changer transitions 5/738 dead transitions. [2021-03-24 13:46:08,080 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 747 places, 738 transitions, 44134 flow [2021-03-24 13:46:08,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:46:08,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:46:08,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:46:08,080 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:46:08,081 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:46:08,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:46:08,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:46:08,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:46:08,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:08,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:08,081 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:08,081 INFO L185 Difference]: Start difference. First operand has 740 places, 731 transitions, 42516 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:46:08,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 747 places, 738 transitions, 44134 flow [2021-03-24 13:46:10,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 742 places, 738 transitions, 43415 flow, removed 20 selfloop flow, removed 5 redundant places. [2021-03-24 13:46:10,256 INFO L241 Difference]: Finished difference. Result has 743 places, 726 transitions, 42123 flow [2021-03-24 13:46:10,256 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=41797, PETRI_DIFFERENCE_MINUEND_PLACES=735, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=42123, PETRI_PLACES=743, PETRI_TRANSITIONS=726} [2021-03-24 13:46:10,257 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 705 predicate places. [2021-03-24 13:46:10,257 INFO L480 AbstractCegarLoop]: Abstraction has has 743 places, 726 transitions, 42123 flow [2021-03-24 13:46:10,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:10,257 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:46:10,257 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:46:10,257 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-03-24 13:46:10,257 INFO L428 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:46:10,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:46:10,257 INFO L82 PathProgramCache]: Analyzing trace with hash -217016436, now seen corresponding path program 199 times [2021-03-24 13:46:10,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:46:10,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792756453] [2021-03-24 13:46:10,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:46:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:46:10,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:10,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:46:10,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:10,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:46:10,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:10,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:46:10,273 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:46:10,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:46:10,288 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:46:10,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:46:10,307 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:46:10,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:46:10,325 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:46:10,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:46:10,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:46:10,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792756453] [2021-03-24 13:46:10,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:46:10,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:46:10,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264671489] [2021-03-24 13:46:10,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:46:10,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:46:10,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:46:10,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:46:10,342 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:46:10,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 726 transitions, 42123 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:10,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:46:10,342 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:46:10,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:46:11,965 INFO L129 PetriNetUnfolder]: 300/3813 cut-off events. [2021-03-24 13:46:11,965 INFO L130 PetriNetUnfolder]: For 263032/263143 co-relation queries the response was YES. [2021-03-24 13:46:12,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38504 conditions, 3813 events. 300/3813 cut-off events. For 263032/263143 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 57503 event pairs, 13 based on Foata normal form. 13/3774 useless extension candidates. Maximal degree in co-relation 38307. Up to 681 conditions per place. [2021-03-24 13:46:12,018 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 403 selfloop transitions, 312 changer transitions 4/733 dead transitions. [2021-03-24 13:46:12,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 747 places, 733 transitions, 43739 flow [2021-03-24 13:46:12,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:46:12,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:46:12,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-03-24 13:46:12,019 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2021-03-24 13:46:12,019 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-03-24 13:46:12,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-03-24 13:46:12,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:46:12,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-03-24 13:46:12,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:12,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:12,020 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:12,020 INFO L185 Difference]: Start difference. First operand has 743 places, 726 transitions, 42123 flow. Second operand 8 states and 466 transitions. [2021-03-24 13:46:12,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 747 places, 733 transitions, 43739 flow [2021-03-24 13:46:14,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 741 places, 733 transitions, 43055 flow, removed 13 selfloop flow, removed 6 redundant places. [2021-03-24 13:46:14,072 INFO L241 Difference]: Finished difference. Result has 742 places, 722 transitions, 41886 flow [2021-03-24 13:46:14,073 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=41455, PETRI_DIFFERENCE_MINUEND_PLACES=734, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=312, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=41886, PETRI_PLACES=742, PETRI_TRANSITIONS=722} [2021-03-24 13:46:14,073 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 704 predicate places. [2021-03-24 13:46:14,073 INFO L480 AbstractCegarLoop]: Abstraction has has 742 places, 722 transitions, 41886 flow [2021-03-24 13:46:14,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:14,073 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:46:14,073 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:46:14,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-03-24 13:46:14,073 INFO L428 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:46:14,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:46:14,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1537631428, now seen corresponding path program 200 times [2021-03-24 13:46:14,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:46:14,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787205134] [2021-03-24 13:46:14,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:46:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:46:14,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:14,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:46:14,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:14,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:46:14,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:14,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:46:14,089 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:46:14,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:46:14,104 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:46:14,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:46:14,123 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:46:14,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:46:14,141 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:46:14,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:46:14,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:46:14,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787205134] [2021-03-24 13:46:14,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:46:14,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:46:14,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212922712] [2021-03-24 13:46:14,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:46:14,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:46:14,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:46:14,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:46:14,159 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:46:14,159 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 742 places, 722 transitions, 41886 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:14,160 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:46:14,160 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:46:14,160 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:46:15,767 INFO L129 PetriNetUnfolder]: 299/3801 cut-off events. [2021-03-24 13:46:15,767 INFO L130 PetriNetUnfolder]: For 259079/259190 co-relation queries the response was YES. [2021-03-24 13:46:15,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37994 conditions, 3801 events. 299/3801 cut-off events. For 259079/259190 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 57374 event pairs, 13 based on Foata normal form. 13/3762 useless extension candidates. Maximal degree in co-relation 37798. Up to 681 conditions per place. [2021-03-24 13:46:15,914 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 384 selfloop transitions, 327 changer transitions 4/729 dead transitions. [2021-03-24 13:46:15,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 747 places, 729 transitions, 43486 flow [2021-03-24 13:46:15,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:46:15,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:46:15,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-03-24 13:46:15,915 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2021-03-24 13:46:15,916 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-03-24 13:46:15,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-03-24 13:46:15,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:46:15,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-03-24 13:46:15,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:15,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:15,916 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:15,916 INFO L185 Difference]: Start difference. First operand has 742 places, 722 transitions, 41886 flow. Second operand 8 states and 466 transitions. [2021-03-24 13:46:15,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 747 places, 729 transitions, 43486 flow [2021-03-24 13:46:18,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 744 places, 729 transitions, 43050 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-24 13:46:18,075 INFO L241 Difference]: Finished difference. Result has 745 places, 718 transitions, 41901 flow [2021-03-24 13:46:18,076 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=41458, PETRI_DIFFERENCE_MINUEND_PLACES=737, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=41901, PETRI_PLACES=745, PETRI_TRANSITIONS=718} [2021-03-24 13:46:18,076 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 707 predicate places. [2021-03-24 13:46:18,076 INFO L480 AbstractCegarLoop]: Abstraction has has 745 places, 718 transitions, 41901 flow [2021-03-24 13:46:18,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:18,076 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:46:18,076 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:46:18,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-03-24 13:46:18,076 INFO L428 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:46:18,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:46:18,076 INFO L82 PathProgramCache]: Analyzing trace with hash 474942320, now seen corresponding path program 201 times [2021-03-24 13:46:18,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:46:18,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538289305] [2021-03-24 13:46:18,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:46:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:46:18,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:18,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:46:18,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:18,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:46:18,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:18,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:46:18,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:18,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:46:18,100 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:46:18,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:46:18,112 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:46:18,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:46:18,129 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:46:18,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:46:18,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:46:18,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538289305] [2021-03-24 13:46:18,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:46:18,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:46:18,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297136131] [2021-03-24 13:46:18,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:46:18,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:46:18,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:46:18,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:46:18,147 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:46:18,147 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 745 places, 718 transitions, 41901 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:18,147 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:46:18,147 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:46:18,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:46:19,789 INFO L129 PetriNetUnfolder]: 304/3898 cut-off events. [2021-03-24 13:46:19,789 INFO L130 PetriNetUnfolder]: For 265624/265737 co-relation queries the response was YES. [2021-03-24 13:46:19,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39003 conditions, 3898 events. 304/3898 cut-off events. For 265624/265737 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 59087 event pairs, 13 based on Foata normal form. 12/3857 useless extension candidates. Maximal degree in co-relation 38807. Up to 695 conditions per place. [2021-03-24 13:46:19,848 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 483 selfloop transitions, 319 changer transitions 0/816 dead transitions. [2021-03-24 13:46:19,848 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 750 places, 816 transitions, 48646 flow [2021-03-24 13:46:19,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:46:19,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:46:19,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:46:19,849 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:46:19,849 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:46:19,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:46:19,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:46:19,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:46:19,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:19,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:19,850 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:19,850 INFO L185 Difference]: Start difference. First operand has 745 places, 718 transitions, 41901 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:46:19,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 750 places, 816 transitions, 48646 flow [2021-03-24 13:46:22,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 744 places, 816 transitions, 47892 flow, removed 19 selfloop flow, removed 6 redundant places. [2021-03-24 13:46:22,162 INFO L241 Difference]: Finished difference. Result has 749 places, 754 transitions, 44126 flow [2021-03-24 13:46:22,162 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=41219, PETRI_DIFFERENCE_MINUEND_PLACES=737, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=44126, PETRI_PLACES=749, PETRI_TRANSITIONS=754} [2021-03-24 13:46:22,162 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 711 predicate places. [2021-03-24 13:46:22,163 INFO L480 AbstractCegarLoop]: Abstraction has has 749 places, 754 transitions, 44126 flow [2021-03-24 13:46:22,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:22,163 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:46:22,163 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:46:22,163 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-03-24 13:46:22,163 INFO L428 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:46:22,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:46:22,163 INFO L82 PathProgramCache]: Analyzing trace with hash -194105444, now seen corresponding path program 202 times [2021-03-24 13:46:22,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:46:22,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620968403] [2021-03-24 13:46:22,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:46:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:46:22,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:22,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:46:22,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:22,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:46:22,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:22,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:46:22,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:22,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:46:22,187 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:46:22,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:46:22,200 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:46:22,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:46:22,217 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:46:22,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:46:22,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:46:22,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620968403] [2021-03-24 13:46:22,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:46:22,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:46:22,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141191305] [2021-03-24 13:46:22,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:46:22,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:46:22,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:46:22,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:46:22,234 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:46:22,235 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 749 places, 754 transitions, 44126 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:22,235 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:46:22,235 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:46:22,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:46:23,945 INFO L129 PetriNetUnfolder]: 304/3897 cut-off events. [2021-03-24 13:46:23,945 INFO L130 PetriNetUnfolder]: For 269102/269204 co-relation queries the response was YES. [2021-03-24 13:46:23,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39091 conditions, 3897 events. 304/3897 cut-off events. For 269102/269204 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 59083 event pairs, 13 based on Foata normal form. 14/3859 useless extension candidates. Maximal degree in co-relation 38892. Up to 681 conditions per place. [2021-03-24 13:46:24,005 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 427 selfloop transitions, 345 changer transitions 0/786 dead transitions. [2021-03-24 13:46:24,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 756 places, 786 transitions, 47238 flow [2021-03-24 13:46:24,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:46:24,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:46:24,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:46:24,006 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:46:24,006 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:46:24,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:46:24,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:46:24,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:46:24,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:24,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:24,007 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:24,007 INFO L185 Difference]: Start difference. First operand has 749 places, 754 transitions, 44126 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:46:24,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 756 places, 786 transitions, 47238 flow [2021-03-24 13:46:26,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 754 places, 786 transitions, 46788 flow, removed 34 selfloop flow, removed 2 redundant places. [2021-03-24 13:46:26,410 INFO L241 Difference]: Finished difference. Result has 758 places, 772 transitions, 45643 flow [2021-03-24 13:46:26,410 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=43691, PETRI_DIFFERENCE_MINUEND_PLACES=747, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45643, PETRI_PLACES=758, PETRI_TRANSITIONS=772} [2021-03-24 13:46:26,410 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 720 predicate places. [2021-03-24 13:46:26,410 INFO L480 AbstractCegarLoop]: Abstraction has has 758 places, 772 transitions, 45643 flow [2021-03-24 13:46:26,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:26,410 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:46:26,410 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:46:26,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-03-24 13:46:26,410 INFO L428 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:46:26,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:46:26,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1996832766, now seen corresponding path program 203 times [2021-03-24 13:46:26,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:46:26,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750850420] [2021-03-24 13:46:26,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:46:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:46:26,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:26,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:46:26,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:26,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:46:26,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:26,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:46:26,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:26,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:46:26,439 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:46:26,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:46:26,459 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:46:26,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:46:26,478 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:46:26,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:46:26,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:46:26,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750850420] [2021-03-24 13:46:26,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:46:26,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:46:26,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033716384] [2021-03-24 13:46:26,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:46:26,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:46:26,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:46:26,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:46:26,497 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:46:26,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 758 places, 772 transitions, 45643 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:26,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:46:26,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:46:26,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:46:28,250 INFO L129 PetriNetUnfolder]: 304/3896 cut-off events. [2021-03-24 13:46:28,250 INFO L130 PetriNetUnfolder]: For 278211/278336 co-relation queries the response was YES. [2021-03-24 13:46:28,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39755 conditions, 3896 events. 304/3896 cut-off events. For 278211/278336 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 59102 event pairs, 13 based on Foata normal form. 17/3861 useless extension candidates. Maximal degree in co-relation 39552. Up to 681 conditions per place. [2021-03-24 13:46:28,310 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 430 selfloop transitions, 340 changer transitions 2/786 dead transitions. [2021-03-24 13:46:28,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 765 places, 786 transitions, 47752 flow [2021-03-24 13:46:28,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:46:28,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:46:28,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:46:28,311 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:46:28,311 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:46:28,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:46:28,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:46:28,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:46:28,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:28,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:28,312 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:28,312 INFO L185 Difference]: Start difference. First operand has 758 places, 772 transitions, 45643 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:46:28,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 765 places, 786 transitions, 47752 flow [2021-03-24 13:46:30,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 762 places, 786 transitions, 47210 flow, removed 37 selfloop flow, removed 3 redundant places. [2021-03-24 13:46:30,792 INFO L241 Difference]: Finished difference. Result has 765 places, 775 transitions, 45960 flow [2021-03-24 13:46:30,793 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=45101, PETRI_DIFFERENCE_MINUEND_PLACES=755, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45960, PETRI_PLACES=765, PETRI_TRANSITIONS=775} [2021-03-24 13:46:30,793 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 727 predicate places. [2021-03-24 13:46:30,793 INFO L480 AbstractCegarLoop]: Abstraction has has 765 places, 775 transitions, 45960 flow [2021-03-24 13:46:30,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:30,793 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:46:30,793 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:46:30,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-03-24 13:46:30,793 INFO L428 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:46:30,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:46:30,793 INFO L82 PathProgramCache]: Analyzing trace with hash 2003408706, now seen corresponding path program 204 times [2021-03-24 13:46:30,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:46:30,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878160718] [2021-03-24 13:46:30,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:46:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:46:30,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:30,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:46:30,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:30,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:46:30,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:30,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:46:30,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:30,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:46:30,817 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:46:30,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:46:30,829 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:46:30,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:46:30,846 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:46:30,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:46:30,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:46:30,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878160718] [2021-03-24 13:46:30,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:46:30,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:46:30,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850357526] [2021-03-24 13:46:30,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:46:30,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:46:30,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:46:30,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:46:30,863 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:46:30,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 765 places, 775 transitions, 45960 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:30,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:46:30,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:46:30,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:46:32,613 INFO L129 PetriNetUnfolder]: 303/3886 cut-off events. [2021-03-24 13:46:32,613 INFO L130 PetriNetUnfolder]: For 281039/281158 co-relation queries the response was YES. [2021-03-24 13:46:32,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40251 conditions, 3886 events. 303/3886 cut-off events. For 281039/281158 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 58935 event pairs, 13 based on Foata normal form. 17/3851 useless extension candidates. Maximal degree in co-relation 40046. Up to 681 conditions per place. [2021-03-24 13:46:32,676 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 427 selfloop transitions, 338 changer transitions 5/784 dead transitions. [2021-03-24 13:46:32,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 771 places, 784 transitions, 47823 flow [2021-03-24 13:46:32,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:46:32,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:46:32,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:46:32,677 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:46:32,677 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:46:32,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:46:32,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:46:32,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:46:32,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:32,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:32,677 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:32,678 INFO L185 Difference]: Start difference. First operand has 765 places, 775 transitions, 45960 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:46:32,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 771 places, 784 transitions, 47823 flow [2021-03-24 13:46:35,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 766 places, 784 transitions, 47195 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-24 13:46:35,298 INFO L241 Difference]: Finished difference. Result has 768 places, 772 transitions, 45830 flow [2021-03-24 13:46:35,299 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=45340, PETRI_DIFFERENCE_MINUEND_PLACES=759, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45830, PETRI_PLACES=768, PETRI_TRANSITIONS=772} [2021-03-24 13:46:35,299 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 730 predicate places. [2021-03-24 13:46:35,299 INFO L480 AbstractCegarLoop]: Abstraction has has 768 places, 772 transitions, 45830 flow [2021-03-24 13:46:35,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:35,299 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:46:35,299 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:46:35,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-03-24 13:46:35,299 INFO L428 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:46:35,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:46:35,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1252130268, now seen corresponding path program 205 times [2021-03-24 13:46:35,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:46:35,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036702477] [2021-03-24 13:46:35,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:46:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:46:35,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:35,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:46:35,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:35,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:46:35,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:35,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:46:35,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:35,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:46:35,324 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:46:35,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:46:35,344 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:46:35,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:46:35,361 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:46:35,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:46:35,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:46:35,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036702477] [2021-03-24 13:46:35,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:46:35,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:46:35,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539004904] [2021-03-24 13:46:35,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:46:35,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:46:35,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:46:35,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:46:35,379 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:46:35,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 768 places, 772 transitions, 45830 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:35,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:46:35,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:46:35,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:46:37,121 INFO L129 PetriNetUnfolder]: 302/3869 cut-off events. [2021-03-24 13:46:37,122 INFO L130 PetriNetUnfolder]: For 279820/279937 co-relation queries the response was YES. [2021-03-24 13:46:37,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40114 conditions, 3869 events. 302/3869 cut-off events. For 279820/279937 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 58604 event pairs, 13 based on Foata normal form. 16/3833 useless extension candidates. Maximal degree in co-relation 39909. Up to 681 conditions per place. [2021-03-24 13:46:37,184 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 428 selfloop transitions, 333 changer transitions 3/778 dead transitions. [2021-03-24 13:46:37,185 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 773 places, 778 transitions, 47539 flow [2021-03-24 13:46:37,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:46:37,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:46:37,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-03-24 13:46:37,185 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2021-03-24 13:46:37,185 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-03-24 13:46:37,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-03-24 13:46:37,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:46:37,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-03-24 13:46:37,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:37,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:37,186 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:37,186 INFO L185 Difference]: Start difference. First operand has 768 places, 772 transitions, 45830 flow. Second operand 8 states and 466 transitions. [2021-03-24 13:46:37,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 773 places, 778 transitions, 47539 flow [2021-03-24 13:46:39,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 767 places, 778 transitions, 47025 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-03-24 13:46:39,688 INFO L241 Difference]: Finished difference. Result has 769 places, 770 transitions, 45892 flow [2021-03-24 13:46:39,688 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=45328, PETRI_DIFFERENCE_MINUEND_PLACES=760, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=333, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45892, PETRI_PLACES=769, PETRI_TRANSITIONS=770} [2021-03-24 13:46:39,688 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 731 predicate places. [2021-03-24 13:46:39,688 INFO L480 AbstractCegarLoop]: Abstraction has has 769 places, 770 transitions, 45892 flow [2021-03-24 13:46:39,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:39,688 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:46:39,688 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:46:39,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-03-24 13:46:39,688 INFO L428 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:46:39,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:46:39,688 INFO L82 PathProgramCache]: Analyzing trace with hash -894040492, now seen corresponding path program 206 times [2021-03-24 13:46:39,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:46:39,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076096670] [2021-03-24 13:46:39,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:46:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:46:39,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:39,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:46:39,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:39,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:46:39,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:39,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:46:39,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:39,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:46:39,713 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:46:39,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:46:39,725 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:46:39,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:46:39,743 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:46:39,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:46:39,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:46:39,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076096670] [2021-03-24 13:46:39,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:46:39,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:46:39,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569801253] [2021-03-24 13:46:39,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:46:39,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:46:39,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:46:39,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:46:39,760 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:46:39,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 769 places, 770 transitions, 45892 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:39,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:46:39,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:46:39,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:46:41,466 INFO L129 PetriNetUnfolder]: 301/3858 cut-off events. [2021-03-24 13:46:41,466 INFO L130 PetriNetUnfolder]: For 276235/276352 co-relation queries the response was YES. [2021-03-24 13:46:41,518 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39806 conditions, 3858 events. 301/3858 cut-off events. For 276235/276352 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 58405 event pairs, 13 based on Foata normal form. 16/3822 useless extension candidates. Maximal degree in co-relation 39602. Up to 681 conditions per place. [2021-03-24 13:46:41,526 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 431 selfloop transitions, 329 changer transitions 2/776 dead transitions. [2021-03-24 13:46:41,526 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 774 places, 776 transitions, 47562 flow [2021-03-24 13:46:41,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:46:41,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:46:41,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:46:41,527 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:46:41,527 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:46:41,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:46:41,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:46:41,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:46:41,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:41,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:41,528 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:41,528 INFO L185 Difference]: Start difference. First operand has 769 places, 770 transitions, 45892 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:46:41,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 774 places, 776 transitions, 47562 flow [2021-03-24 13:46:44,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 769 places, 776 transitions, 46925 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-03-24 13:46:44,049 INFO L241 Difference]: Finished difference. Result has 771 places, 770 transitions, 45923 flow [2021-03-24 13:46:44,049 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=45263, PETRI_DIFFERENCE_MINUEND_PLACES=762, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45923, PETRI_PLACES=771, PETRI_TRANSITIONS=770} [2021-03-24 13:46:44,049 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 733 predicate places. [2021-03-24 13:46:44,049 INFO L480 AbstractCegarLoop]: Abstraction has has 771 places, 770 transitions, 45923 flow [2021-03-24 13:46:44,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:44,049 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:46:44,049 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:46:44,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-03-24 13:46:44,050 INFO L428 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:46:44,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:46:44,050 INFO L82 PathProgramCache]: Analyzing trace with hash 2088337376, now seen corresponding path program 207 times [2021-03-24 13:46:44,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:46:44,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124524938] [2021-03-24 13:46:44,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:46:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:46:44,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:44,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:46:44,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:44,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:46:44,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:44,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:46:44,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:44,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:46:44,074 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:46:44,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:46:44,087 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:46:44,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:46:44,104 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:46:44,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:46:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:46:44,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124524938] [2021-03-24 13:46:44,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:46:44,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:46:44,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95770304] [2021-03-24 13:46:44,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:46:44,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:46:44,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:46:44,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:46:44,122 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:46:44,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 771 places, 770 transitions, 45923 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:44,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:46:44,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:46:44,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:46:45,895 INFO L129 PetriNetUnfolder]: 300/3848 cut-off events. [2021-03-24 13:46:45,895 INFO L130 PetriNetUnfolder]: For 276498/276617 co-relation queries the response was YES. [2021-03-24 13:46:45,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39781 conditions, 3848 events. 300/3848 cut-off events. For 276498/276617 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 58241 event pairs, 13 based on Foata normal form. 17/3813 useless extension candidates. Maximal degree in co-relation 39577. Up to 681 conditions per place. [2021-03-24 13:46:45,956 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 429 selfloop transitions, 328 changer transitions 3/774 dead transitions. [2021-03-24 13:46:45,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 777 places, 774 transitions, 47515 flow [2021-03-24 13:46:45,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:46:45,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:46:45,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-03-24 13:46:45,957 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2021-03-24 13:46:45,957 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-03-24 13:46:45,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-03-24 13:46:45,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:46:45,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-03-24 13:46:45,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:45,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:45,958 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:45,958 INFO L185 Difference]: Start difference. First operand has 771 places, 770 transitions, 45923 flow. Second operand 8 states and 466 transitions. [2021-03-24 13:46:45,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 777 places, 774 transitions, 47515 flow [2021-03-24 13:46:48,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 773 places, 774 transitions, 46893 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-03-24 13:46:48,422 INFO L241 Difference]: Finished difference. Result has 774 places, 767 transitions, 45803 flow [2021-03-24 13:46:48,422 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=45309, PETRI_DIFFERENCE_MINUEND_PLACES=766, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45803, PETRI_PLACES=774, PETRI_TRANSITIONS=767} [2021-03-24 13:46:48,422 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 736 predicate places. [2021-03-24 13:46:48,422 INFO L480 AbstractCegarLoop]: Abstraction has has 774 places, 767 transitions, 45803 flow [2021-03-24 13:46:48,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:48,422 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:46:48,422 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:46:48,422 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-03-24 13:46:48,422 INFO L428 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:46:48,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:46:48,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1991101748, now seen corresponding path program 208 times [2021-03-24 13:46:48,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:46:48,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940920602] [2021-03-24 13:46:48,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:46:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:46:48,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:48,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:46:48,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:48,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:46:48,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:48,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:46:48,438 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:46:48,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:46:48,447 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:46:48,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:46:48,460 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:46:48,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:46:48,478 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:46:48,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:46:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:46:48,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940920602] [2021-03-24 13:46:48,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:46:48,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:46:48,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945666199] [2021-03-24 13:46:48,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:46:48,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:46:48,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:46:48,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:46:48,495 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:46:48,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 774 places, 767 transitions, 45803 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:48,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:46:48,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:46:48,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:46:50,202 INFO L129 PetriNetUnfolder]: 299/3837 cut-off events. [2021-03-24 13:46:50,202 INFO L130 PetriNetUnfolder]: For 275762/275881 co-relation queries the response was YES. [2021-03-24 13:46:50,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39724 conditions, 3837 events. 299/3837 cut-off events. For 275762/275881 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 58016 event pairs, 13 based on Foata normal form. 13/3798 useless extension candidates. Maximal degree in co-relation 39520. Up to 731 conditions per place. [2021-03-24 13:46:50,262 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 466 selfloop transitions, 319 changer transitions 0/799 dead transitions. [2021-03-24 13:46:50,262 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 779 places, 799 transitions, 48809 flow [2021-03-24 13:46:50,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:46:50,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:46:50,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:46:50,263 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:46:50,263 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:46:50,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:46:50,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:46:50,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:46:50,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:50,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:50,264 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:50,264 INFO L185 Difference]: Start difference. First operand has 774 places, 767 transitions, 45803 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:46:50,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 779 places, 799 transitions, 48809 flow [2021-03-24 13:46:52,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 774 places, 799 transitions, 48148 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 13:46:52,719 INFO L241 Difference]: Finished difference. Result has 777 places, 789 transitions, 47157 flow [2021-03-24 13:46:52,719 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=45150, PETRI_DIFFERENCE_MINUEND_PLACES=767, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=767, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47157, PETRI_PLACES=777, PETRI_TRANSITIONS=789} [2021-03-24 13:46:52,719 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 739 predicate places. [2021-03-24 13:46:52,719 INFO L480 AbstractCegarLoop]: Abstraction has has 777 places, 789 transitions, 47157 flow [2021-03-24 13:46:52,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:52,719 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:46:52,719 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:46:52,720 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-03-24 13:46:52,720 INFO L428 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:46:52,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:46:52,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1710119784, now seen corresponding path program 209 times [2021-03-24 13:46:52,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:46:52,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320487919] [2021-03-24 13:46:52,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:46:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:46:52,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:52,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:46:52,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:52,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:46:52,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:52,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:46:52,735 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:46:52,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:46:52,744 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:46:52,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:46:52,757 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:46:52,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:46:52,774 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:46:52,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:46:52,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:46:52,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320487919] [2021-03-24 13:46:52,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:46:52,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:46:52,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565019888] [2021-03-24 13:46:52,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:46:52,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:46:52,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:46:52,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:46:52,791 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:46:52,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 777 places, 789 transitions, 47157 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:52,791 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:46:52,791 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:46:52,791 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:46:54,560 INFO L129 PetriNetUnfolder]: 299/3836 cut-off events. [2021-03-24 13:46:54,560 INFO L130 PetriNetUnfolder]: For 281115/281234 co-relation queries the response was YES. [2021-03-24 13:46:54,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39847 conditions, 3836 events. 299/3836 cut-off events. For 281115/281234 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 57959 event pairs, 13 based on Foata normal form. 13/3797 useless extension candidates. Maximal degree in co-relation 39641. Up to 731 conditions per place. [2021-03-24 13:46:54,623 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 468 selfloop transitions, 317 changer transitions 0/799 dead transitions. [2021-03-24 13:46:54,623 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 784 places, 799 transitions, 49051 flow [2021-03-24 13:46:54,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:46:54,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:46:54,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:46:54,624 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:46:54,624 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:46:54,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:46:54,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:46:54,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:46:54,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:54,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:54,625 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:54,625 INFO L185 Difference]: Start difference. First operand has 777 places, 789 transitions, 47157 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:46:54,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 784 places, 799 transitions, 49051 flow [2021-03-24 13:46:57,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 781 places, 799 transitions, 48387 flow, removed 59 selfloop flow, removed 3 redundant places. [2021-03-24 13:46:57,152 INFO L241 Difference]: Finished difference. Result has 782 places, 789 transitions, 47130 flow [2021-03-24 13:46:57,152 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=46493, PETRI_DIFFERENCE_MINUEND_PLACES=774, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47130, PETRI_PLACES=782, PETRI_TRANSITIONS=789} [2021-03-24 13:46:57,152 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 744 predicate places. [2021-03-24 13:46:57,152 INFO L480 AbstractCegarLoop]: Abstraction has has 782 places, 789 transitions, 47130 flow [2021-03-24 13:46:57,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:57,153 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:46:57,153 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:46:57,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-03-24 13:46:57,153 INFO L428 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:46:57,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:46:57,153 INFO L82 PathProgramCache]: Analyzing trace with hash 371220452, now seen corresponding path program 210 times [2021-03-24 13:46:57,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:46:57,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386329547] [2021-03-24 13:46:57,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:46:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:46:57,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:57,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:46:57,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:57,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:46:57,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:57,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:46:57,168 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:46:57,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:46:57,178 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:46:57,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:46:57,193 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:46:57,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:46:57,214 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:46:57,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:46:57,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:46:57,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386329547] [2021-03-24 13:46:57,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:46:57,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:46:57,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281798510] [2021-03-24 13:46:57,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:46:57,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:46:57,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:46:57,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:46:57,235 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:46:57,235 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 782 places, 789 transitions, 47130 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:57,235 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:46:57,235 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:46:57,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:46:59,016 INFO L129 PetriNetUnfolder]: 299/3835 cut-off events. [2021-03-24 13:46:59,016 INFO L130 PetriNetUnfolder]: For 283074/283193 co-relation queries the response was YES. [2021-03-24 13:46:59,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40198 conditions, 3835 events. 299/3835 cut-off events. For 283074/283193 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 57956 event pairs, 13 based on Foata normal form. 13/3796 useless extension candidates. Maximal degree in co-relation 39991. Up to 731 conditions per place. [2021-03-24 13:46:59,077 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 474 selfloop transitions, 311 changer transitions 0/799 dead transitions. [2021-03-24 13:46:59,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 789 places, 799 transitions, 49032 flow [2021-03-24 13:46:59,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:46:59,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:46:59,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:46:59,078 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:46:59,078 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:46:59,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:46:59,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:46:59,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:46:59,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:59,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:59,079 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:59,079 INFO L185 Difference]: Start difference. First operand has 782 places, 789 transitions, 47130 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:46:59,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 789 places, 799 transitions, 49032 flow [2021-03-24 13:47:01,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 786 places, 799 transitions, 48552 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-03-24 13:47:01,657 INFO L241 Difference]: Finished difference. Result has 787 places, 789 transitions, 47275 flow [2021-03-24 13:47:01,657 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=46650, PETRI_DIFFERENCE_MINUEND_PLACES=779, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47275, PETRI_PLACES=787, PETRI_TRANSITIONS=789} [2021-03-24 13:47:01,657 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 749 predicate places. [2021-03-24 13:47:01,657 INFO L480 AbstractCegarLoop]: Abstraction has has 787 places, 789 transitions, 47275 flow [2021-03-24 13:47:01,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:01,657 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:47:01,657 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:47:01,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-03-24 13:47:01,657 INFO L428 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:47:01,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:47:01,658 INFO L82 PathProgramCache]: Analyzing trace with hash 363060258, now seen corresponding path program 211 times [2021-03-24 13:47:01,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:47:01,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513479668] [2021-03-24 13:47:01,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:47:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:47:01,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:01,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:47:01,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:01,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:47:01,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:01,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:47:01,673 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:47:01,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:47:01,682 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:47:01,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:47:01,695 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:47:01,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:47:01,712 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:47:01,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:47:01,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:47:01,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513479668] [2021-03-24 13:47:01,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:47:01,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:47:01,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747687073] [2021-03-24 13:47:01,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:47:01,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:47:01,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:47:01,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:47:01,729 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:47:01,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 787 places, 789 transitions, 47275 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:01,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:47:01,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:47:01,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:47:03,519 INFO L129 PetriNetUnfolder]: 299/3834 cut-off events. [2021-03-24 13:47:03,519 INFO L130 PetriNetUnfolder]: For 287448/287565 co-relation queries the response was YES. [2021-03-24 13:47:03,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40697 conditions, 3834 events. 299/3834 cut-off events. For 287448/287565 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 57973 event pairs, 13 based on Foata normal form. 12/3794 useless extension candidates. Maximal degree in co-relation 40489. Up to 731 conditions per place. [2021-03-24 13:47:03,581 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 474 selfloop transitions, 311 changer transitions 0/799 dead transitions. [2021-03-24 13:47:03,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 794 places, 799 transitions, 49185 flow [2021-03-24 13:47:03,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:47:03,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:47:03,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:47:03,582 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:47:03,582 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:47:03,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:47:03,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:47:03,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:47:03,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:03,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:03,583 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:03,583 INFO L185 Difference]: Start difference. First operand has 787 places, 789 transitions, 47275 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:47:03,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 794 places, 799 transitions, 49185 flow [2021-03-24 13:47:06,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 791 places, 799 transitions, 48611 flow, removed 21 selfloop flow, removed 3 redundant places. [2021-03-24 13:47:06,200 INFO L241 Difference]: Finished difference. Result has 792 places, 789 transitions, 47326 flow [2021-03-24 13:47:06,200 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=46701, PETRI_DIFFERENCE_MINUEND_PLACES=784, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47326, PETRI_PLACES=792, PETRI_TRANSITIONS=789} [2021-03-24 13:47:06,200 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 754 predicate places. [2021-03-24 13:47:06,200 INFO L480 AbstractCegarLoop]: Abstraction has has 792 places, 789 transitions, 47326 flow [2021-03-24 13:47:06,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:06,201 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:47:06,201 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:47:06,201 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-03-24 13:47:06,201 INFO L428 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:47:06,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:47:06,201 INFO L82 PathProgramCache]: Analyzing trace with hash -816166160, now seen corresponding path program 212 times [2021-03-24 13:47:06,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:47:06,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832744989] [2021-03-24 13:47:06,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:47:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:47:06,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:06,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:47:06,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:06,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:47:06,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:06,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:47:06,217 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:47:06,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:47:06,234 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:47:06,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:47:06,253 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:47:06,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:47:06,271 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:47:06,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:47:06,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:47:06,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832744989] [2021-03-24 13:47:06,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:47:06,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:47:06,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940078688] [2021-03-24 13:47:06,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:47:06,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:47:06,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:47:06,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:47:06,289 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:47:06,289 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 792 places, 789 transitions, 47326 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:06,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:47:06,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:47:06,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:47:08,107 INFO L129 PetriNetUnfolder]: 299/3833 cut-off events. [2021-03-24 13:47:08,107 INFO L130 PetriNetUnfolder]: For 290832/290951 co-relation queries the response was YES. [2021-03-24 13:47:08,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41108 conditions, 3833 events. 299/3833 cut-off events. For 290832/290951 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 58032 event pairs, 13 based on Foata normal form. 13/3794 useless extension candidates. Maximal degree in co-relation 40899. Up to 731 conditions per place. [2021-03-24 13:47:08,168 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 466 selfloop transitions, 317 changer transitions 2/799 dead transitions. [2021-03-24 13:47:08,169 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 799 places, 799 transitions, 49244 flow [2021-03-24 13:47:08,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:47:08,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:47:08,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:47:08,169 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:47:08,169 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:47:08,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:47:08,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:47:08,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:47:08,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:08,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:08,170 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:08,170 INFO L185 Difference]: Start difference. First operand has 792 places, 789 transitions, 47326 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:47:08,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 799 places, 799 transitions, 49244 flow [2021-03-24 13:47:10,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 795 places, 799 transitions, 48647 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 13:47:10,678 INFO L241 Difference]: Finished difference. Result has 797 places, 793 transitions, 47642 flow [2021-03-24 13:47:10,678 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=46729, PETRI_DIFFERENCE_MINUEND_PLACES=788, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47642, PETRI_PLACES=797, PETRI_TRANSITIONS=793} [2021-03-24 13:47:10,678 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 759 predicate places. [2021-03-24 13:47:10,678 INFO L480 AbstractCegarLoop]: Abstraction has has 797 places, 793 transitions, 47642 flow [2021-03-24 13:47:10,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:10,678 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:47:10,679 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:47:10,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-03-24 13:47:10,679 INFO L428 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:47:10,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:47:10,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1228018818, now seen corresponding path program 213 times [2021-03-24 13:47:10,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:47:10,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427857176] [2021-03-24 13:47:10,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:47:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:47:10,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:10,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:47:10,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:10,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:47:10,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:10,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:47:10,694 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:47:10,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:47:10,704 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:47:10,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:47:10,726 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:47:10,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:47:10,743 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:47:10,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:47:10,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:47:10,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427857176] [2021-03-24 13:47:10,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:47:10,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:47:10,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929023978] [2021-03-24 13:47:10,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:47:10,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:47:10,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:47:10,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:47:10,761 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:47:10,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 797 places, 793 transitions, 47642 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:10,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:47:10,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:47:10,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:47:12,527 INFO L129 PetriNetUnfolder]: 298/3823 cut-off events. [2021-03-24 13:47:12,527 INFO L130 PetriNetUnfolder]: For 297761/297880 co-relation queries the response was YES. [2021-03-24 13:47:12,581 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41476 conditions, 3823 events. 298/3823 cut-off events. For 297761/297880 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 57813 event pairs, 13 based on Foata normal form. 13/3784 useless extension candidates. Maximal degree in co-relation 41265. Up to 731 conditions per place. [2021-03-24 13:47:12,589 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 465 selfloop transitions, 318 changer transitions 0/797 dead transitions. [2021-03-24 13:47:12,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 803 places, 797 transitions, 49312 flow [2021-03-24 13:47:12,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:47:12,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:47:12,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:47:12,590 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:47:12,590 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:47:12,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:47:12,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:47:12,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:47:12,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:12,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:12,591 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:12,591 INFO L185 Difference]: Start difference. First operand has 797 places, 793 transitions, 47642 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:47:12,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 803 places, 797 transitions, 49312 flow [2021-03-24 13:47:15,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 800 places, 797 transitions, 49042 flow, removed 19 selfloop flow, removed 3 redundant places. [2021-03-24 13:47:15,184 INFO L241 Difference]: Finished difference. Result has 801 places, 793 transitions, 48019 flow [2021-03-24 13:47:15,185 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=47380, PETRI_DIFFERENCE_MINUEND_PLACES=793, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=318, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48019, PETRI_PLACES=801, PETRI_TRANSITIONS=793} [2021-03-24 13:47:15,185 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 763 predicate places. [2021-03-24 13:47:15,185 INFO L480 AbstractCegarLoop]: Abstraction has has 801 places, 793 transitions, 48019 flow [2021-03-24 13:47:15,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:15,185 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:47:15,185 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:47:15,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-03-24 13:47:15,185 INFO L428 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:47:15,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:47:15,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1564298844, now seen corresponding path program 214 times [2021-03-24 13:47:15,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:47:15,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281805523] [2021-03-24 13:47:15,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:47:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:47:15,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:15,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:47:15,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:15,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:47:15,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:15,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:47:15,201 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:47:15,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:47:15,210 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:47:15,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:47:15,234 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:47:15,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:47:15,252 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:47:15,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:47:15,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:47:15,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281805523] [2021-03-24 13:47:15,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:47:15,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:47:15,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475952262] [2021-03-24 13:47:15,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:47:15,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:47:15,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:47:15,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:47:15,269 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:47:15,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 801 places, 793 transitions, 48019 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:15,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:47:15,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:47:15,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:47:17,053 INFO L129 PetriNetUnfolder]: 298/3822 cut-off events. [2021-03-24 13:47:17,053 INFO L130 PetriNetUnfolder]: For 299519/299638 co-relation queries the response was YES. [2021-03-24 13:47:17,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41797 conditions, 3822 events. 298/3822 cut-off events. For 299519/299638 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 57724 event pairs, 13 based on Foata normal form. 13/3783 useless extension candidates. Maximal degree in co-relation 41587. Up to 731 conditions per place. [2021-03-24 13:47:17,116 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 461 selfloop transitions, 310 changer transitions 12/797 dead transitions. [2021-03-24 13:47:17,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 808 places, 797 transitions, 49689 flow [2021-03-24 13:47:17,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:47:17,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:47:17,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:47:17,117 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:47:17,117 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:47:17,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:47:17,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:47:17,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:47:17,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:17,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:17,117 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:17,117 INFO L185 Difference]: Start difference. First operand has 801 places, 793 transitions, 48019 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:47:17,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 808 places, 797 transitions, 49689 flow [2021-03-24 13:47:19,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 805 places, 797 transitions, 49102 flow, removed 28 selfloop flow, removed 3 redundant places. [2021-03-24 13:47:19,717 INFO L241 Difference]: Finished difference. Result has 806 places, 781 transitions, 47088 flow [2021-03-24 13:47:19,718 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=47432, PETRI_DIFFERENCE_MINUEND_PLACES=798, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47088, PETRI_PLACES=806, PETRI_TRANSITIONS=781} [2021-03-24 13:47:19,718 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 768 predicate places. [2021-03-24 13:47:19,718 INFO L480 AbstractCegarLoop]: Abstraction has has 806 places, 781 transitions, 47088 flow [2021-03-24 13:47:19,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:19,718 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:47:19,718 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:47:19,718 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-03-24 13:47:19,718 INFO L428 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:47:19,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:47:19,718 INFO L82 PathProgramCache]: Analyzing trace with hash 10160144, now seen corresponding path program 215 times [2021-03-24 13:47:19,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:47:19,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366254265] [2021-03-24 13:47:19,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:47:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:47:19,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:19,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:47:19,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:19,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:47:19,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:19,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:47:19,735 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:47:19,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:47:19,752 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:47:19,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:47:19,778 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:47:19,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:47:19,797 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:47:19,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:47:19,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:47:19,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366254265] [2021-03-24 13:47:19,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:47:19,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:47:19,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065265349] [2021-03-24 13:47:19,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:47:19,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:47:19,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:47:19,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:47:19,816 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:47:19,816 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 806 places, 781 transitions, 47088 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:19,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:47:19,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:47:19,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:47:21,571 INFO L129 PetriNetUnfolder]: 297/3779 cut-off events. [2021-03-24 13:47:21,571 INFO L130 PetriNetUnfolder]: For 298282/298399 co-relation queries the response was YES. [2021-03-24 13:47:21,623 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41480 conditions, 3779 events. 297/3779 cut-off events. For 298282/298399 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 56960 event pairs, 13 based on Foata normal form. 12/3741 useless extension candidates. Maximal degree in co-relation 41269. Up to 731 conditions per place. [2021-03-24 13:47:21,631 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 459 selfloop transitions, 309 changer transitions 3/785 dead transitions. [2021-03-24 13:47:21,631 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 807 places, 785 transitions, 48742 flow [2021-03-24 13:47:21,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:47:21,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:47:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:47:21,632 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:47:21,632 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:47:21,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:47:21,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:47:21,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:47:21,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:21,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:21,633 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:21,633 INFO L185 Difference]: Start difference. First operand has 806 places, 781 transitions, 47088 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:47:21,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 807 places, 785 transitions, 48742 flow [2021-03-24 13:47:24,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 797 places, 785 transitions, 48084 flow, removed 30 selfloop flow, removed 10 redundant places. [2021-03-24 13:47:24,287 INFO L241 Difference]: Finished difference. Result has 798 places, 778 transitions, 46906 flow [2021-03-24 13:47:24,287 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=46478, PETRI_DIFFERENCE_MINUEND_PLACES=790, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=781, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46906, PETRI_PLACES=798, PETRI_TRANSITIONS=778} [2021-03-24 13:47:24,288 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 760 predicate places. [2021-03-24 13:47:24,288 INFO L480 AbstractCegarLoop]: Abstraction has has 798 places, 778 transitions, 46906 flow [2021-03-24 13:47:24,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:24,288 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:47:24,288 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:47:24,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-03-24 13:47:24,288 INFO L428 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:47:24,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:47:24,288 INFO L82 PathProgramCache]: Analyzing trace with hash 370743798, now seen corresponding path program 216 times [2021-03-24 13:47:24,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:47:24,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018174005] [2021-03-24 13:47:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:47:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:47:24,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:24,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:47:24,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:24,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:47:24,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:24,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:47:24,318 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:47:24,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:47:24,336 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:47:24,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:47:24,350 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:47:24,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:47:24,368 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:47:24,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:47:24,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:47:24,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018174005] [2021-03-24 13:47:24,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:47:24,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:47:24,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801012846] [2021-03-24 13:47:24,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:47:24,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:47:24,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:47:24,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:47:24,386 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:47:24,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 798 places, 778 transitions, 46906 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:24,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:47:24,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:47:24,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:47:26,034 INFO L129 PetriNetUnfolder]: 296/3768 cut-off events. [2021-03-24 13:47:26,034 INFO L130 PetriNetUnfolder]: For 277048/277165 co-relation queries the response was YES. [2021-03-24 13:47:26,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39526 conditions, 3768 events. 296/3768 cut-off events. For 277048/277165 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 56729 event pairs, 13 based on Foata normal form. 12/3730 useless extension candidates. Maximal degree in co-relation 39320. Up to 731 conditions per place. [2021-03-24 13:47:26,096 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 454 selfloop transitions, 314 changer transitions 0/782 dead transitions. [2021-03-24 13:47:26,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 804 places, 782 transitions, 48514 flow [2021-03-24 13:47:26,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:47:26,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:47:26,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:47:26,097 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:47:26,097 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:47:26,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:47:26,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:47:26,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:47:26,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:26,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:26,098 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:26,098 INFO L185 Difference]: Start difference. First operand has 798 places, 778 transitions, 46906 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:47:26,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 804 places, 782 transitions, 48514 flow [2021-03-24 13:47:28,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 799 places, 782 transitions, 47906 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-24 13:47:28,480 INFO L241 Difference]: Finished difference. Result has 800 places, 778 transitions, 46937 flow [2021-03-24 13:47:28,480 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=46306, PETRI_DIFFERENCE_MINUEND_PLACES=792, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=778, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=314, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46937, PETRI_PLACES=800, PETRI_TRANSITIONS=778} [2021-03-24 13:47:28,480 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 762 predicate places. [2021-03-24 13:47:28,480 INFO L480 AbstractCegarLoop]: Abstraction has has 800 places, 778 transitions, 46937 flow [2021-03-24 13:47:28,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:28,480 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:47:28,480 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:47:28,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-03-24 13:47:28,480 INFO L428 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:47:28,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:47:28,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1191004318, now seen corresponding path program 217 times [2021-03-24 13:47:28,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:47:28,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857724963] [2021-03-24 13:47:28,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:47:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:47:28,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:28,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:47:28,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:28,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:47:28,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:28,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:47:28,496 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:47:28,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:47:28,513 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:47:28,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:47:28,537 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:47:28,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:47:28,555 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:47:28,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:47:28,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:47:28,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857724963] [2021-03-24 13:47:28,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:47:28,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:47:28,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262756633] [2021-03-24 13:47:28,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:47:28,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:47:28,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:47:28,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:47:28,582 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:47:28,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 800 places, 778 transitions, 46937 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:28,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:47:28,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:47:28,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:47:30,355 INFO L129 PetriNetUnfolder]: 296/3767 cut-off events. [2021-03-24 13:47:30,355 INFO L130 PetriNetUnfolder]: For 277020/277136 co-relation queries the response was YES. [2021-03-24 13:47:30,412 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39543 conditions, 3767 events. 296/3767 cut-off events. For 277020/277136 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 56730 event pairs, 13 based on Foata normal form. 13/3730 useless extension candidates. Maximal degree in co-relation 39337. Up to 731 conditions per place. [2021-03-24 13:47:30,420 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 451 selfloop transitions, 313 changer transitions 4/782 dead transitions. [2021-03-24 13:47:30,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 807 places, 782 transitions, 48545 flow [2021-03-24 13:47:30,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:47:30,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:47:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:47:30,421 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:47:30,421 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:47:30,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:47:30,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:47:30,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:47:30,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:30,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:30,422 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:30,422 INFO L185 Difference]: Start difference. First operand has 800 places, 778 transitions, 46937 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:47:30,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 807 places, 782 transitions, 48545 flow [2021-03-24 13:47:32,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 801 places, 782 transitions, 47497 flow, removed 11 selfloop flow, removed 6 redundant places. [2021-03-24 13:47:32,769 INFO L241 Difference]: Finished difference. Result has 802 places, 774 transitions, 46229 flow [2021-03-24 13:47:32,769 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=45889, PETRI_DIFFERENCE_MINUEND_PLACES=794, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=778, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=313, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46229, PETRI_PLACES=802, PETRI_TRANSITIONS=774} [2021-03-24 13:47:32,769 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 764 predicate places. [2021-03-24 13:47:32,769 INFO L480 AbstractCegarLoop]: Abstraction has has 802 places, 774 transitions, 46229 flow [2021-03-24 13:47:32,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:32,769 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:47:32,770 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:47:32,770 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-03-24 13:47:32,770 INFO L428 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:47:32,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:47:32,770 INFO L82 PathProgramCache]: Analyzing trace with hash 699467228, now seen corresponding path program 218 times [2021-03-24 13:47:32,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:47:32,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149403373] [2021-03-24 13:47:32,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:47:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:47:32,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:32,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:47:32,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:32,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:47:32,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:32,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:47:32,786 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:47:32,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:47:32,803 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:47:32,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:47:32,818 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:47:32,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:47:32,836 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:47:32,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:47:32,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:47:32,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149403373] [2021-03-24 13:47:32,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:47:32,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:47:32,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815023758] [2021-03-24 13:47:32,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:47:32,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:47:32,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:47:32,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:47:32,854 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:47:32,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 802 places, 774 transitions, 46229 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:32,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:47:32,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:47:32,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:47:34,576 INFO L129 PetriNetUnfolder]: 295/3750 cut-off events. [2021-03-24 13:47:34,576 INFO L130 PetriNetUnfolder]: For 273515/273631 co-relation queries the response was YES. [2021-03-24 13:47:34,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39411 conditions, 3750 events. 295/3750 cut-off events. For 273515/273631 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 56404 event pairs, 13 based on Foata normal form. 13/3713 useless extension candidates. Maximal degree in co-relation 39204. Up to 731 conditions per place. [2021-03-24 13:47:34,637 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 463 selfloop transitions, 299 changer transitions 2/778 dead transitions. [2021-03-24 13:47:34,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 807 places, 778 transitions, 47837 flow [2021-03-24 13:47:34,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:47:34,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:47:34,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:47:34,638 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:47:34,638 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:47:34,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:47:34,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:47:34,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:47:34,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:34,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:34,639 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:34,639 INFO L185 Difference]: Start difference. First operand has 802 places, 774 transitions, 46229 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:47:34,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 807 places, 778 transitions, 47837 flow [2021-03-24 13:47:36,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 800 places, 778 transitions, 47198 flow, removed 13 selfloop flow, removed 7 redundant places. [2021-03-24 13:47:36,984 INFO L241 Difference]: Finished difference. Result has 801 places, 772 transitions, 46080 flow [2021-03-24 13:47:36,984 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=45606, PETRI_DIFFERENCE_MINUEND_PLACES=793, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=299, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46080, PETRI_PLACES=801, PETRI_TRANSITIONS=772} [2021-03-24 13:47:36,984 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 763 predicate places. [2021-03-24 13:47:36,984 INFO L480 AbstractCegarLoop]: Abstraction has has 801 places, 772 transitions, 46080 flow [2021-03-24 13:47:36,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:36,984 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:47:36,984 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:47:36,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-03-24 13:47:36,985 INFO L428 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:47:36,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:47:36,985 INFO L82 PathProgramCache]: Analyzing trace with hash -45807486, now seen corresponding path program 219 times [2021-03-24 13:47:36,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:47:36,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408667313] [2021-03-24 13:47:36,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:47:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:47:36,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:36,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:47:36,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:36,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:47:36,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:36,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:47:37,000 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:47:37,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:47:37,017 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:47:37,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:47:37,030 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:47:37,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:47:37,047 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:47:37,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:47:37,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:47:37,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408667313] [2021-03-24 13:47:37,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:47:37,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:47:37,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810943237] [2021-03-24 13:47:37,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:47:37,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:47:37,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:47:37,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:47:37,064 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:47:37,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 801 places, 772 transitions, 46080 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:37,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:47:37,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:47:37,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:47:38,716 INFO L129 PetriNetUnfolder]: 294/3740 cut-off events. [2021-03-24 13:47:38,716 INFO L130 PetriNetUnfolder]: For 269162/269276 co-relation queries the response was YES. [2021-03-24 13:47:38,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38962 conditions, 3740 events. 294/3740 cut-off events. For 269162/269276 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 56223 event pairs, 13 based on Foata normal form. 12/3702 useless extension candidates. Maximal degree in co-relation 38757. Up to 731 conditions per place. [2021-03-24 13:47:38,775 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 460 selfloop transitions, 300 changer transitions 2/776 dead transitions. [2021-03-24 13:47:38,775 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 807 places, 776 transitions, 47676 flow [2021-03-24 13:47:38,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:47:38,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:47:38,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-03-24 13:47:38,776 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2021-03-24 13:47:38,776 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-03-24 13:47:38,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-03-24 13:47:38,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:47:38,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-03-24 13:47:38,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:38,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:38,777 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:38,777 INFO L185 Difference]: Start difference. First operand has 801 places, 772 transitions, 46080 flow. Second operand 8 states and 466 transitions. [2021-03-24 13:47:38,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 807 places, 776 transitions, 47676 flow [2021-03-24 13:47:41,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 804 places, 776 transitions, 47264 flow, removed 9 selfloop flow, removed 3 redundant places. [2021-03-24 13:47:41,278 INFO L241 Difference]: Finished difference. Result has 805 places, 770 transitions, 46144 flow [2021-03-24 13:47:41,278 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=45676, PETRI_DIFFERENCE_MINUEND_PLACES=797, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46144, PETRI_PLACES=805, PETRI_TRANSITIONS=770} [2021-03-24 13:47:41,278 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 767 predicate places. [2021-03-24 13:47:41,279 INFO L480 AbstractCegarLoop]: Abstraction has has 805 places, 770 transitions, 46144 flow [2021-03-24 13:47:41,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:41,279 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:47:41,279 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:47:41,279 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-03-24 13:47:41,279 INFO L428 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:47:41,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:47:41,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1652673100, now seen corresponding path program 220 times [2021-03-24 13:47:41,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:47:41,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081391068] [2021-03-24 13:47:41,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:47:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:47:41,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:41,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:47:41,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:41,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:47:41,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:41,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:47:41,294 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:47:41,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:47:41,311 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:47:41,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:47:41,330 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:47:41,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:47:41,348 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:47:41,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:47:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:47:41,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081391068] [2021-03-24 13:47:41,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:47:41,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:47:41,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053464888] [2021-03-24 13:47:41,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:47:41,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:47:41,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:47:41,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:47:41,365 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:47:41,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 805 places, 770 transitions, 46144 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:41,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:47:41,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:47:41,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:47:43,033 INFO L129 PetriNetUnfolder]: 293/3730 cut-off events. [2021-03-24 13:47:43,033 INFO L130 PetriNetUnfolder]: For 269230/269344 co-relation queries the response was YES. [2021-03-24 13:47:43,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39051 conditions, 3730 events. 293/3730 cut-off events. For 269230/269344 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 56045 event pairs, 13 based on Foata normal form. 12/3692 useless extension candidates. Maximal degree in co-relation 38846. Up to 731 conditions per place. [2021-03-24 13:47:43,092 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 454 selfloop transitions, 304 changer transitions 2/774 dead transitions. [2021-03-24 13:47:43,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 810 places, 774 transitions, 47736 flow [2021-03-24 13:47:43,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:47:43,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:47:43,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:47:43,093 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:47:43,093 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:47:43,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:47:43,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:47:43,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:47:43,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:43,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:43,094 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:43,094 INFO L185 Difference]: Start difference. First operand has 805 places, 770 transitions, 46144 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:47:43,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 810 places, 774 transitions, 47736 flow [2021-03-24 13:47:45,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 805 places, 774 transitions, 47138 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 13:47:45,717 INFO L241 Difference]: Finished difference. Result has 806 places, 768 transitions, 46020 flow [2021-03-24 13:47:45,718 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=45554, PETRI_DIFFERENCE_MINUEND_PLACES=798, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46020, PETRI_PLACES=806, PETRI_TRANSITIONS=768} [2021-03-24 13:47:45,718 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 768 predicate places. [2021-03-24 13:47:45,718 INFO L480 AbstractCegarLoop]: Abstraction has has 806 places, 768 transitions, 46020 flow [2021-03-24 13:47:45,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:45,718 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:47:45,718 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:47:45,718 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-03-24 13:47:45,718 INFO L428 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:47:45,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:47:45,718 INFO L82 PathProgramCache]: Analyzing trace with hash -911473730, now seen corresponding path program 221 times [2021-03-24 13:47:45,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:47:45,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848572593] [2021-03-24 13:47:45,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:47:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:47:45,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:45,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:47:45,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:45,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:47:45,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:45,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:47:45,734 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:47:45,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:47:45,751 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:47:45,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:47:45,771 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:47:45,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:47:45,789 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:47:45,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:47:45,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:47:45,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848572593] [2021-03-24 13:47:45,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:47:45,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:47:45,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913722475] [2021-03-24 13:47:45,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:47:45,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:47:45,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:47:45,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:47:45,807 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:47:45,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 806 places, 768 transitions, 46020 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:45,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:47:45,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:47:45,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:47:47,474 INFO L129 PetriNetUnfolder]: 292/3720 cut-off events. [2021-03-24 13:47:47,475 INFO L130 PetriNetUnfolder]: For 268633/268749 co-relation queries the response was YES. [2021-03-24 13:47:47,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38968 conditions, 3720 events. 292/3720 cut-off events. For 268633/268749 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 55813 event pairs, 13 based on Foata normal form. 13/3683 useless extension candidates. Maximal degree in co-relation 38763. Up to 731 conditions per place. [2021-03-24 13:47:47,534 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 455 selfloop transitions, 299 changer transitions 3/771 dead transitions. [2021-03-24 13:47:47,535 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 812 places, 771 transitions, 47588 flow [2021-03-24 13:47:47,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:47:47,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:47:47,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-03-24 13:47:47,535 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2021-03-24 13:47:47,535 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-03-24 13:47:47,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-03-24 13:47:47,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:47:47,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-03-24 13:47:47,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:47,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:47,536 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:47,536 INFO L185 Difference]: Start difference. First operand has 806 places, 768 transitions, 46020 flow. Second operand 8 states and 466 transitions. [2021-03-24 13:47:47,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 812 places, 771 transitions, 47588 flow [2021-03-24 13:47:49,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 807 places, 771 transitions, 47001 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-24 13:47:49,893 INFO L241 Difference]: Finished difference. Result has 808 places, 765 transitions, 45858 flow [2021-03-24 13:47:49,894 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=45439, PETRI_DIFFERENCE_MINUEND_PLACES=800, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=299, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45858, PETRI_PLACES=808, PETRI_TRANSITIONS=765} [2021-03-24 13:47:49,894 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 770 predicate places. [2021-03-24 13:47:49,894 INFO L480 AbstractCegarLoop]: Abstraction has has 808 places, 765 transitions, 45858 flow [2021-03-24 13:47:49,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:49,894 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:47:49,894 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:47:49,894 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-03-24 13:47:49,894 INFO L428 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:47:49,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:47:49,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1083225230, now seen corresponding path program 222 times [2021-03-24 13:47:49,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:47:49,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259430791] [2021-03-24 13:47:49,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:47:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:47:49,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:49,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:47:49,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:49,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:47:49,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:49,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:47:49,910 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:47:49,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:47:49,927 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:47:49,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:47:49,951 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:47:49,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:47:49,969 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:47:49,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:47:49,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:47:49,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259430791] [2021-03-24 13:47:49,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:47:49,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:47:49,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140246025] [2021-03-24 13:47:49,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:47:49,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:47:49,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:47:49,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:47:49,987 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:47:49,987 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 765 transitions, 45858 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:49,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:47:49,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:47:49,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:47:51,634 INFO L129 PetriNetUnfolder]: 291/3709 cut-off events. [2021-03-24 13:47:51,634 INFO L130 PetriNetUnfolder]: For 266498/266614 co-relation queries the response was YES. [2021-03-24 13:47:51,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38903 conditions, 3709 events. 291/3709 cut-off events. For 266498/266614 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 55692 event pairs, 13 based on Foata normal form. 13/3672 useless extension candidates. Maximal degree in co-relation 38699. Up to 731 conditions per place. [2021-03-24 13:47:51,693 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 461 selfloop transitions, 292 changer transitions 2/769 dead transitions. [2021-03-24 13:47:51,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 812 places, 769 transitions, 47440 flow [2021-03-24 13:47:51,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:47:51,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:47:51,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:47:51,694 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:47:51,694 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:47:51,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:47:51,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:47:51,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:47:51,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:51,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:51,695 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:51,695 INFO L185 Difference]: Start difference. First operand has 808 places, 765 transitions, 45858 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:47:51,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 812 places, 769 transitions, 47440 flow [2021-03-24 13:47:53,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 805 places, 769 transitions, 46642 flow, removed 11 selfloop flow, removed 7 redundant places. [2021-03-24 13:47:54,007 INFO L241 Difference]: Finished difference. Result has 806 places, 763 transitions, 45514 flow [2021-03-24 13:47:54,007 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=45068, PETRI_DIFFERENCE_MINUEND_PLACES=798, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=765, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45514, PETRI_PLACES=806, PETRI_TRANSITIONS=763} [2021-03-24 13:47:54,007 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 768 predicate places. [2021-03-24 13:47:54,007 INFO L480 AbstractCegarLoop]: Abstraction has has 806 places, 763 transitions, 45514 flow [2021-03-24 13:47:54,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:54,008 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:47:54,008 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:47:54,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-03-24 13:47:54,008 INFO L428 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:47:54,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:47:54,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1983543004, now seen corresponding path program 223 times [2021-03-24 13:47:54,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:47:54,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715214015] [2021-03-24 13:47:54,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:47:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:47:54,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:54,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:47:54,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:54,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:47:54,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:54,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:47:54,024 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:47:54,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:47:54,041 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:47:54,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:47:54,064 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:47:54,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:47:54,082 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:47:54,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:47:54,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:47:54,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715214015] [2021-03-24 13:47:54,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:47:54,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:47:54,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402167177] [2021-03-24 13:47:54,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:47:54,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:47:54,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:47:54,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:47:54,099 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:47:54,100 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 806 places, 763 transitions, 45514 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:54,100 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:47:54,100 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:47:54,100 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:47:55,754 INFO L129 PetriNetUnfolder]: 290/3699 cut-off events. [2021-03-24 13:47:55,754 INFO L130 PetriNetUnfolder]: For 264868/264982 co-relation queries the response was YES. [2021-03-24 13:47:55,811 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38630 conditions, 3699 events. 290/3699 cut-off events. For 264868/264982 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 55534 event pairs, 13 based on Foata normal form. 12/3661 useless extension candidates. Maximal degree in co-relation 38426. Up to 731 conditions per place. [2021-03-24 13:47:55,819 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 460 selfloop transitions, 291 changer transitions 2/767 dead transitions. [2021-03-24 13:47:55,819 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 812 places, 767 transitions, 47092 flow [2021-03-24 13:47:55,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:47:55,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:47:55,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:47:55,820 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:47:55,820 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:47:55,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:47:55,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:47:55,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:47:55,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:55,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:55,821 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:55,821 INFO L185 Difference]: Start difference. First operand has 806 places, 763 transitions, 45514 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:47:55,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 812 places, 767 transitions, 47092 flow [2021-03-24 13:47:58,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 807 places, 767 transitions, 46510 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-03-24 13:47:58,332 INFO L241 Difference]: Finished difference. Result has 808 places, 761 transitions, 45386 flow [2021-03-24 13:47:58,332 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=44940, PETRI_DIFFERENCE_MINUEND_PLACES=800, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45386, PETRI_PLACES=808, PETRI_TRANSITIONS=761} [2021-03-24 13:47:58,332 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 770 predicate places. [2021-03-24 13:47:58,332 INFO L480 AbstractCegarLoop]: Abstraction has has 808 places, 761 transitions, 45386 flow [2021-03-24 13:47:58,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:58,333 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:47:58,333 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:47:58,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-03-24 13:47:58,333 INFO L428 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:47:58,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:47:58,333 INFO L82 PathProgramCache]: Analyzing trace with hash -238904126, now seen corresponding path program 224 times [2021-03-24 13:47:58,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:47:58,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526502658] [2021-03-24 13:47:58,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:47:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:47:58,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:58,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:47:58,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:58,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:47:58,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:58,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:47:58,364 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:47:58,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:47:58,380 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:47:58,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:47:58,394 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:47:58,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:47:58,411 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:47:58,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:47:58,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:47:58,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526502658] [2021-03-24 13:47:58,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:47:58,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:47:58,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895008187] [2021-03-24 13:47:58,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:47:58,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:47:58,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:47:58,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:47:58,429 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:47:58,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 761 transitions, 45386 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:58,429 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:47:58,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:47:58,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:48:00,090 INFO L129 PetriNetUnfolder]: 289/3689 cut-off events. [2021-03-24 13:48:00,090 INFO L130 PetriNetUnfolder]: For 262831/262947 co-relation queries the response was YES. [2021-03-24 13:48:00,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38579 conditions, 3689 events. 289/3689 cut-off events. For 262831/262947 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 55297 event pairs, 13 based on Foata normal form. 13/3652 useless extension candidates. Maximal degree in co-relation 38376. Up to 731 conditions per place. [2021-03-24 13:48:00,149 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 450 selfloop transitions, 296 changer transitions 5/765 dead transitions. [2021-03-24 13:48:00,149 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 814 places, 765 transitions, 46960 flow [2021-03-24 13:48:00,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:48:00,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:48:00,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:48:00,150 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:48:00,150 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:48:00,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:48:00,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:48:00,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:48:00,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:00,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:00,151 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:00,151 INFO L185 Difference]: Start difference. First operand has 808 places, 761 transitions, 45386 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:48:00,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 814 places, 765 transitions, 46960 flow [2021-03-24 13:48:02,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 809 places, 765 transitions, 46376 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 13:48:02,623 INFO L241 Difference]: Finished difference. Result has 810 places, 756 transitions, 45054 flow [2021-03-24 13:48:02,623 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=44810, PETRI_DIFFERENCE_MINUEND_PLACES=802, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45054, PETRI_PLACES=810, PETRI_TRANSITIONS=756} [2021-03-24 13:48:02,624 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 772 predicate places. [2021-03-24 13:48:02,624 INFO L480 AbstractCegarLoop]: Abstraction has has 810 places, 756 transitions, 45054 flow [2021-03-24 13:48:02,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:02,624 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:48:02,624 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:48:02,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-03-24 13:48:02,624 INFO L428 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:48:02,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:48:02,624 INFO L82 PathProgramCache]: Analyzing trace with hash 21695256, now seen corresponding path program 225 times [2021-03-24 13:48:02,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:48:02,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269105762] [2021-03-24 13:48:02,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:48:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:48:02,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:02,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:48:02,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:02,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:48:02,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:02,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:48:02,639 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:48:02,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:48:02,649 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:48:02,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:48:02,662 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:48:02,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:48:02,679 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:48:02,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:48:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:48:02,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269105762] [2021-03-24 13:48:02,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:48:02,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:48:02,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261613900] [2021-03-24 13:48:02,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:48:02,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:48:02,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:48:02,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:48:02,696 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:48:02,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 810 places, 756 transitions, 45054 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:02,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:48:02,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:48:02,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:48:04,319 INFO L129 PetriNetUnfolder]: 288/3671 cut-off events. [2021-03-24 13:48:04,319 INFO L130 PetriNetUnfolder]: For 261147/261263 co-relation queries the response was YES. [2021-03-24 13:48:04,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38312 conditions, 3671 events. 288/3671 cut-off events. For 261147/261263 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 55001 event pairs, 13 based on Foata normal form. 13/3635 useless extension candidates. Maximal degree in co-relation 38109. Up to 731 conditions per place. [2021-03-24 13:48:04,377 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 478 selfloop transitions, 280 changer transitions 0/772 dead transitions. [2021-03-24 13:48:04,377 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 813 places, 772 transitions, 47294 flow [2021-03-24 13:48:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:48:04,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:48:04,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:48:04,378 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:48:04,378 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:48:04,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:48:04,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:48:04,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:48:04,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:04,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:04,379 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:04,379 INFO L185 Difference]: Start difference. First operand has 810 places, 756 transitions, 45054 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:48:04,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 813 places, 772 transitions, 47294 flow [2021-03-24 13:48:06,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 807 places, 772 transitions, 46674 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-03-24 13:48:06,655 INFO L241 Difference]: Finished difference. Result has 810 places, 765 transitions, 45595 flow [2021-03-24 13:48:06,655 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=44464, PETRI_DIFFERENCE_MINUEND_PLACES=800, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=756, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45595, PETRI_PLACES=810, PETRI_TRANSITIONS=765} [2021-03-24 13:48:06,655 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 772 predicate places. [2021-03-24 13:48:06,655 INFO L480 AbstractCegarLoop]: Abstraction has has 810 places, 765 transitions, 45595 flow [2021-03-24 13:48:06,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:06,655 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:48:06,655 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:48:06,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-03-24 13:48:06,656 INFO L428 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:48:06,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:48:06,656 INFO L82 PathProgramCache]: Analyzing trace with hash -932479938, now seen corresponding path program 226 times [2021-03-24 13:48:06,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:48:06,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248305225] [2021-03-24 13:48:06,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:48:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:48:06,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:06,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:48:06,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:06,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:48:06,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:06,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:48:06,671 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:48:06,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:48:06,681 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:48:06,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:48:06,703 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:48:06,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:48:06,721 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:48:06,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:48:06,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:48:06,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248305225] [2021-03-24 13:48:06,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:48:06,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:48:06,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771956211] [2021-03-24 13:48:06,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:48:06,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:48:06,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:48:06,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:48:06,739 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:48:06,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 810 places, 765 transitions, 45595 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:06,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:48:06,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:48:06,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:48:08,363 INFO L129 PetriNetUnfolder]: 288/3670 cut-off events. [2021-03-24 13:48:08,363 INFO L130 PetriNetUnfolder]: For 259300/259416 co-relation queries the response was YES. [2021-03-24 13:48:08,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37972 conditions, 3670 events. 288/3670 cut-off events. For 259300/259416 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 54944 event pairs, 13 based on Foata normal form. 13/3634 useless extension candidates. Maximal degree in co-relation 37768. Up to 731 conditions per place. [2021-03-24 13:48:08,421 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 480 selfloop transitions, 276 changer transitions 2/772 dead transitions. [2021-03-24 13:48:08,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 817 places, 772 transitions, 47313 flow [2021-03-24 13:48:08,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:48:08,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:48:08,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:48:08,422 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:48:08,422 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:48:08,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:48:08,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:48:08,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:48:08,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:08,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:08,423 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:08,423 INFO L185 Difference]: Start difference. First operand has 810 places, 765 transitions, 45595 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:48:08,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 817 places, 772 transitions, 47313 flow [2021-03-24 13:48:10,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 815 places, 772 transitions, 46903 flow, removed 8 selfloop flow, removed 2 redundant places. [2021-03-24 13:48:10,680 INFO L241 Difference]: Finished difference. Result has 817 places, 766 transitions, 45776 flow [2021-03-24 13:48:10,680 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=45185, PETRI_DIFFERENCE_MINUEND_PLACES=808, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=765, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45776, PETRI_PLACES=817, PETRI_TRANSITIONS=766} [2021-03-24 13:48:10,680 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 779 predicate places. [2021-03-24 13:48:10,680 INFO L480 AbstractCegarLoop]: Abstraction has has 817 places, 766 transitions, 45776 flow [2021-03-24 13:48:10,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:10,680 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:48:10,680 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:48:10,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-03-24 13:48:10,681 INFO L428 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:48:10,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:48:10,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2081982842, now seen corresponding path program 227 times [2021-03-24 13:48:10,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:48:10,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100371341] [2021-03-24 13:48:10,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:48:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:48:10,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:10,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:48:10,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:10,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:48:10,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:10,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:48:10,696 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:48:10,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:48:10,705 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:48:10,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:48:10,718 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:48:10,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:48:10,735 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:48:10,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:48:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:48:10,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100371341] [2021-03-24 13:48:10,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:48:10,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:48:10,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448283094] [2021-03-24 13:48:10,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:48:10,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:48:10,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:48:10,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:48:10,753 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:48:10,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 817 places, 766 transitions, 45776 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:10,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:48:10,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:48:10,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:48:12,435 INFO L129 PetriNetUnfolder]: 287/3660 cut-off events. [2021-03-24 13:48:12,435 INFO L130 PetriNetUnfolder]: For 262699/262813 co-relation queries the response was YES. [2021-03-24 13:48:12,486 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38405 conditions, 3660 events. 287/3660 cut-off events. For 262699/262813 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 54799 event pairs, 13 based on Foata normal form. 12/3623 useless extension candidates. Maximal degree in co-relation 38199. Up to 731 conditions per place. [2021-03-24 13:48:12,493 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 475 selfloop transitions, 276 changer transitions 5/770 dead transitions. [2021-03-24 13:48:12,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 823 places, 770 transitions, 47360 flow [2021-03-24 13:48:12,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:48:12,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:48:12,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:48:12,494 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:48:12,494 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:48:12,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:48:12,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:48:12,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:48:12,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:12,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:12,495 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:12,495 INFO L185 Difference]: Start difference. First operand has 817 places, 766 transitions, 45776 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:48:12,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 823 places, 770 transitions, 47360 flow [2021-03-24 13:48:14,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 818 places, 770 transitions, 46734 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 13:48:14,886 INFO L241 Difference]: Finished difference. Result has 819 places, 761 transitions, 45365 flow [2021-03-24 13:48:14,886 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=45158, PETRI_DIFFERENCE_MINUEND_PLACES=811, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45365, PETRI_PLACES=819, PETRI_TRANSITIONS=761} [2021-03-24 13:48:14,886 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 781 predicate places. [2021-03-24 13:48:14,886 INFO L480 AbstractCegarLoop]: Abstraction has has 819 places, 761 transitions, 45365 flow [2021-03-24 13:48:14,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:14,886 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:48:14,886 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:48:14,886 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-03-24 13:48:14,887 INFO L428 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:48:14,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:48:14,887 INFO L82 PathProgramCache]: Analyzing trace with hash -394624360, now seen corresponding path program 228 times [2021-03-24 13:48:14,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:48:14,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679902638] [2021-03-24 13:48:14,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:48:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:48:14,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:14,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:48:14,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:14,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:48:14,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:14,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:48:14,915 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:48:14,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:48:14,924 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:48:14,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:48:14,937 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:48:14,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:48:14,954 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:48:14,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:48:14,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:48:14,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679902638] [2021-03-24 13:48:14,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:48:14,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:48:14,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065473029] [2021-03-24 13:48:14,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:48:14,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:48:14,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:48:14,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:48:14,972 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:48:14,973 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 819 places, 761 transitions, 45365 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:14,973 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:48:14,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:48:14,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:48:16,490 INFO L129 PetriNetUnfolder]: 286/3643 cut-off events. [2021-03-24 13:48:16,490 INFO L130 PetriNetUnfolder]: For 260940/261054 co-relation queries the response was YES. [2021-03-24 13:48:16,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38106 conditions, 3643 events. 286/3643 cut-off events. For 260940/261054 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 54447 event pairs, 13 based on Foata normal form. 12/3606 useless extension candidates. Maximal degree in co-relation 37900. Up to 731 conditions per place. [2021-03-24 13:48:16,550 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 476 selfloop transitions, 271 changer transitions 3/764 dead transitions. [2021-03-24 13:48:16,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 824 places, 764 transitions, 46919 flow [2021-03-24 13:48:16,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:48:16,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:48:16,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-03-24 13:48:16,551 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2021-03-24 13:48:16,551 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-03-24 13:48:16,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-03-24 13:48:16,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:48:16,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-03-24 13:48:16,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:16,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:16,551 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:16,551 INFO L185 Difference]: Start difference. First operand has 819 places, 761 transitions, 45365 flow. Second operand 8 states and 466 transitions. [2021-03-24 13:48:16,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 824 places, 764 transitions, 46919 flow [2021-03-24 13:48:19,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 818 places, 764 transitions, 46360 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-03-24 13:48:19,034 INFO L241 Difference]: Finished difference. Result has 819 places, 758 transitions, 45179 flow [2021-03-24 13:48:19,034 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=44818, PETRI_DIFFERENCE_MINUEND_PLACES=811, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45179, PETRI_PLACES=819, PETRI_TRANSITIONS=758} [2021-03-24 13:48:19,034 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 781 predicate places. [2021-03-24 13:48:19,034 INFO L480 AbstractCegarLoop]: Abstraction has has 819 places, 758 transitions, 45179 flow [2021-03-24 13:48:19,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:19,034 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:48:19,034 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:48:19,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-03-24 13:48:19,034 INFO L428 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:48:19,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:48:19,035 INFO L82 PathProgramCache]: Analyzing trace with hash 556925058, now seen corresponding path program 229 times [2021-03-24 13:48:19,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:48:19,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864485206] [2021-03-24 13:48:19,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:48:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:48:19,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:19,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:48:19,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:19,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:48:19,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:19,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:48:19,061 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:48:19,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:48:19,070 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:48:19,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:48:19,091 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:48:19,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:48:19,107 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:48:19,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:48:19,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:48:19,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864485206] [2021-03-24 13:48:19,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:48:19,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:48:19,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656399562] [2021-03-24 13:48:19,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:48:19,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:48:19,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:48:19,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:48:19,124 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:48:19,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 819 places, 758 transitions, 45179 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:19,124 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:48:19,124 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:48:19,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:48:20,763 INFO L129 PetriNetUnfolder]: 285/3632 cut-off events. [2021-03-24 13:48:20,763 INFO L130 PetriNetUnfolder]: For 257237/257353 co-relation queries the response was YES. [2021-03-24 13:48:20,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37634 conditions, 3632 events. 285/3632 cut-off events. For 257237/257353 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 54314 event pairs, 13 based on Foata normal form. 13/3596 useless extension candidates. Maximal degree in co-relation 37429. Up to 731 conditions per place. [2021-03-24 13:48:20,817 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 474 selfloop transitions, 271 changer transitions 3/762 dead transitions. [2021-03-24 13:48:20,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 824 places, 762 transitions, 46739 flow [2021-03-24 13:48:20,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:48:20,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:48:20,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-03-24 13:48:20,818 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2021-03-24 13:48:20,818 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-03-24 13:48:20,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-03-24 13:48:20,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:48:20,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-03-24 13:48:20,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:20,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:20,819 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:20,819 INFO L185 Difference]: Start difference. First operand has 819 places, 758 transitions, 45179 flow. Second operand 8 states and 466 transitions. [2021-03-24 13:48:20,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 824 places, 762 transitions, 46739 flow [2021-03-24 13:48:23,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 819 places, 762 transitions, 46187 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-24 13:48:23,101 INFO L241 Difference]: Finished difference. Result has 820 places, 755 transitions, 44989 flow [2021-03-24 13:48:23,102 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=44635, PETRI_DIFFERENCE_MINUEND_PLACES=812, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=44989, PETRI_PLACES=820, PETRI_TRANSITIONS=755} [2021-03-24 13:48:23,102 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 782 predicate places. [2021-03-24 13:48:23,102 INFO L480 AbstractCegarLoop]: Abstraction has has 820 places, 755 transitions, 44989 flow [2021-03-24 13:48:23,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:23,102 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:48:23,102 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:48:23,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-03-24 13:48:23,102 INFO L428 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:48:23,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:48:23,102 INFO L82 PathProgramCache]: Analyzing trace with hash 588344800, now seen corresponding path program 230 times [2021-03-24 13:48:23,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:48:23,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819716051] [2021-03-24 13:48:23,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:48:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:48:23,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:23,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:48:23,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:23,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:48:23,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:23,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:48:23,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:23,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:48:23,127 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:48:23,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:48:23,139 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:48:23,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:48:23,157 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:48:23,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:48:23,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:48:23,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819716051] [2021-03-24 13:48:23,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:48:23,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:48:23,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034470626] [2021-03-24 13:48:23,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:48:23,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:48:23,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:48:23,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:48:23,174 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:48:23,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 820 places, 755 transitions, 44989 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:23,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:48:23,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:48:23,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:48:24,822 INFO L129 PetriNetUnfolder]: 284/3621 cut-off events. [2021-03-24 13:48:24,823 INFO L130 PetriNetUnfolder]: For 256299/256415 co-relation queries the response was YES. [2021-03-24 13:48:24,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37513 conditions, 3621 events. 284/3621 cut-off events. For 256299/256415 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 54087 event pairs, 13 based on Foata normal form. 13/3585 useless extension candidates. Maximal degree in co-relation 37308. Up to 681 conditions per place. [2021-03-24 13:48:24,882 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 484 selfloop transitions, 295 changer transitions 5/798 dead transitions. [2021-03-24 13:48:24,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 825 places, 798 transitions, 48745 flow [2021-03-24 13:48:24,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:48:24,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:48:24,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:48:24,883 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:48:24,883 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:48:24,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:48:24,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:48:24,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:48:24,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:24,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:24,884 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:24,884 INFO L185 Difference]: Start difference. First operand has 820 places, 755 transitions, 44989 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:48:24,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 825 places, 798 transitions, 48745 flow [2021-03-24 13:48:27,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 821 places, 798 transitions, 48188 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-03-24 13:48:27,277 INFO L241 Difference]: Finished difference. Result has 823 places, 753 transitions, 44973 flow [2021-03-24 13:48:27,278 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=44478, PETRI_DIFFERENCE_MINUEND_PLACES=814, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=755, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=44973, PETRI_PLACES=823, PETRI_TRANSITIONS=753} [2021-03-24 13:48:27,278 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 785 predicate places. [2021-03-24 13:48:27,278 INFO L480 AbstractCegarLoop]: Abstraction has has 823 places, 753 transitions, 44973 flow [2021-03-24 13:48:27,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:27,278 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:48:27,278 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:48:27,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-03-24 13:48:27,278 INFO L428 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:48:27,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:48:27,278 INFO L82 PathProgramCache]: Analyzing trace with hash -451141352, now seen corresponding path program 231 times [2021-03-24 13:48:27,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:48:27,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461731251] [2021-03-24 13:48:27,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:48:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:48:27,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:27,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:48:27,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:27,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:48:27,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:27,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:48:27,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:27,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:48:27,311 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:48:27,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:48:27,324 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:48:27,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:48:27,342 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:48:27,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:48:27,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:48:27,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461731251] [2021-03-24 13:48:27,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:48:27,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:48:27,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753280900] [2021-03-24 13:48:27,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:48:27,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:48:27,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:48:27,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:48:27,360 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:48:27,360 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 823 places, 753 transitions, 44973 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:27,360 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:48:27,360 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:48:27,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:48:28,936 INFO L129 PetriNetUnfolder]: 283/3604 cut-off events. [2021-03-24 13:48:28,936 INFO L130 PetriNetUnfolder]: For 255554/255673 co-relation queries the response was YES. [2021-03-24 13:48:28,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37389 conditions, 3604 events. 283/3604 cut-off events. For 255554/255673 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 53786 event pairs, 13 based on Foata normal form. 13/3568 useless extension candidates. Maximal degree in co-relation 37183. Up to 681 conditions per place. [2021-03-24 13:48:28,994 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 488 selfloop transitions, 289 changer transitions 2/793 dead transitions. [2021-03-24 13:48:28,994 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 828 places, 793 transitions, 48475 flow [2021-03-24 13:48:28,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:48:28,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:48:28,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:48:28,995 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:48:28,995 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:48:28,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:48:28,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:48:28,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:48:28,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:28,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:28,996 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:28,996 INFO L185 Difference]: Start difference. First operand has 823 places, 753 transitions, 44973 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:48:28,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 828 places, 793 transitions, 48475 flow [2021-03-24 13:48:31,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 821 places, 793 transitions, 47877 flow, removed 14 selfloop flow, removed 7 redundant places. [2021-03-24 13:48:31,326 INFO L241 Difference]: Finished difference. Result has 823 places, 757 transitions, 45294 flow [2021-03-24 13:48:31,326 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=44391, PETRI_DIFFERENCE_MINUEND_PLACES=814, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=753, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45294, PETRI_PLACES=823, PETRI_TRANSITIONS=757} [2021-03-24 13:48:31,326 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 785 predicate places. [2021-03-24 13:48:31,326 INFO L480 AbstractCegarLoop]: Abstraction has has 823 places, 757 transitions, 45294 flow [2021-03-24 13:48:31,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:31,326 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:48:31,326 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:48:31,327 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-03-24 13:48:31,327 INFO L428 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:48:31,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:48:31,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1705532512, now seen corresponding path program 232 times [2021-03-24 13:48:31,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:48:31,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858562575] [2021-03-24 13:48:31,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:48:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:48:31,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:31,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:48:31,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:31,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:48:31,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:31,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:48:31,346 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:48:31,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:48:31,355 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:48:31,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:48:31,378 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:48:31,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:48:31,405 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:48:31,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:48:31,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:48:31,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858562575] [2021-03-24 13:48:31,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:48:31,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:48:31,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225121046] [2021-03-24 13:48:31,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:48:31,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:48:31,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:48:31,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:48:31,422 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:48:31,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 823 places, 757 transitions, 45294 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:31,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:48:31,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:48:31,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:48:32,967 INFO L129 PetriNetUnfolder]: 282/3594 cut-off events. [2021-03-24 13:48:32,968 INFO L130 PetriNetUnfolder]: For 253707/253825 co-relation queries the response was YES. [2021-03-24 13:48:33,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36981 conditions, 3594 events. 282/3594 cut-off events. For 253707/253825 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 53566 event pairs, 13 based on Foata normal form. 12/3557 useless extension candidates. Maximal degree in co-relation 36776. Up to 681 conditions per place. [2021-03-24 13:48:33,024 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 497 selfloop transitions, 278 changer transitions 2/791 dead transitions. [2021-03-24 13:48:33,024 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 829 places, 791 transitions, 48414 flow [2021-03-24 13:48:33,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:48:33,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:48:33,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:48:33,025 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:48:33,025 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:48:33,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:48:33,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:48:33,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:48:33,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:33,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:33,026 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:33,026 INFO L185 Difference]: Start difference. First operand has 823 places, 757 transitions, 45294 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:48:33,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 829 places, 791 transitions, 48414 flow [2021-03-24 13:48:35,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 824 places, 791 transitions, 47875 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-03-24 13:48:35,347 INFO L241 Difference]: Finished difference. Result has 826 places, 765 transitions, 45868 flow [2021-03-24 13:48:35,347 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=44763, PETRI_DIFFERENCE_MINUEND_PLACES=817, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45868, PETRI_PLACES=826, PETRI_TRANSITIONS=765} [2021-03-24 13:48:35,348 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 788 predicate places. [2021-03-24 13:48:35,348 INFO L480 AbstractCegarLoop]: Abstraction has has 826 places, 765 transitions, 45868 flow [2021-03-24 13:48:35,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:35,348 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:48:35,348 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:48:35,348 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-03-24 13:48:35,348 INFO L428 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:48:35,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:48:35,348 INFO L82 PathProgramCache]: Analyzing trace with hash -2051579206, now seen corresponding path program 233 times [2021-03-24 13:48:35,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:48:35,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043001093] [2021-03-24 13:48:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:48:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:48:35,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:35,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:48:35,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:35,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:48:35,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:35,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:48:35,366 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:48:35,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:48:35,375 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:48:35,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:48:35,388 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:48:35,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:48:35,406 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:48:35,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:48:35,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:48:35,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043001093] [2021-03-24 13:48:35,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:48:35,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:48:35,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490023658] [2021-03-24 13:48:35,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:48:35,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:48:35,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:48:35,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:48:35,423 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:48:35,423 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 826 places, 765 transitions, 45868 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:35,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:48:35,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:48:35,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:48:37,024 INFO L129 PetriNetUnfolder]: 281/3584 cut-off events. [2021-03-24 13:48:37,025 INFO L130 PetriNetUnfolder]: For 255824/255941 co-relation queries the response was YES. [2021-03-24 13:48:37,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37005 conditions, 3584 events. 281/3584 cut-off events. For 255824/255941 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 53405 event pairs, 13 based on Foata normal form. 12/3547 useless extension candidates. Maximal degree in co-relation 36800. Up to 681 conditions per place. [2021-03-24 13:48:37,171 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 494 selfloop transitions, 279 changer transitions 2/789 dead transitions. [2021-03-24 13:48:37,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 832 places, 789 transitions, 48428 flow [2021-03-24 13:48:37,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:48:37,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:48:37,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:48:37,172 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:48:37,172 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:48:37,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:48:37,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:48:37,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:48:37,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:37,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:37,173 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:37,173 INFO L185 Difference]: Start difference. First operand has 826 places, 765 transitions, 45868 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:48:37,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 832 places, 789 transitions, 48428 flow [2021-03-24 13:48:39,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 827 places, 789 transitions, 47990 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-03-24 13:48:39,371 INFO L241 Difference]: Finished difference. Result has 828 places, 763 transitions, 45871 flow [2021-03-24 13:48:39,371 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=45438, PETRI_DIFFERENCE_MINUEND_PLACES=820, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=765, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45871, PETRI_PLACES=828, PETRI_TRANSITIONS=763} [2021-03-24 13:48:39,371 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 790 predicate places. [2021-03-24 13:48:39,371 INFO L480 AbstractCegarLoop]: Abstraction has has 828 places, 763 transitions, 45871 flow [2021-03-24 13:48:39,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:39,371 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:48:39,371 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:48:39,371 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-03-24 13:48:39,371 INFO L428 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:48:39,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:48:39,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1006754332, now seen corresponding path program 234 times [2021-03-24 13:48:39,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:48:39,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114264692] [2021-03-24 13:48:39,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:48:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:48:39,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:39,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:48:39,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:39,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:48:39,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:39,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:48:39,387 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:48:39,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:48:39,403 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:48:39,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:48:39,426 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:48:39,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:48:39,443 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:48:39,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:48:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:48:39,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114264692] [2021-03-24 13:48:39,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:48:39,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:48:39,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82023978] [2021-03-24 13:48:39,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:48:39,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:48:39,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:48:39,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:48:39,461 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:48:39,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 828 places, 763 transitions, 45871 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:39,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:48:39,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:48:39,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:48:41,026 INFO L129 PetriNetUnfolder]: 280/3574 cut-off events. [2021-03-24 13:48:41,026 INFO L130 PetriNetUnfolder]: For 255002/255121 co-relation queries the response was YES. [2021-03-24 13:48:41,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37089 conditions, 3574 events. 280/3574 cut-off events. For 255002/255121 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 53222 event pairs, 13 based on Foata normal form. 13/3538 useless extension candidates. Maximal degree in co-relation 36886. Up to 681 conditions per place. [2021-03-24 13:48:41,082 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 487 selfloop transitions, 284 changer transitions 2/787 dead transitions. [2021-03-24 13:48:41,083 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 834 places, 787 transitions, 48427 flow [2021-03-24 13:48:41,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:48:41,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:48:41,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:48:41,084 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:48:41,084 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:48:41,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:48:41,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:48:41,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:48:41,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:41,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:41,084 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:41,084 INFO L185 Difference]: Start difference. First operand has 828 places, 763 transitions, 45871 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:48:41,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 834 places, 787 transitions, 48427 flow [2021-03-24 13:48:43,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 830 places, 787 transitions, 47924 flow, removed 11 selfloop flow, removed 4 redundant places. [2021-03-24 13:48:43,473 INFO L241 Difference]: Finished difference. Result has 832 places, 763 transitions, 45955 flow [2021-03-24 13:48:43,473 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=45376, PETRI_DIFFERENCE_MINUEND_PLACES=823, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45955, PETRI_PLACES=832, PETRI_TRANSITIONS=763} [2021-03-24 13:48:43,473 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 794 predicate places. [2021-03-24 13:48:43,473 INFO L480 AbstractCegarLoop]: Abstraction has has 832 places, 763 transitions, 45955 flow [2021-03-24 13:48:43,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:43,473 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:48:43,473 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:48:43,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-03-24 13:48:43,473 INFO L428 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:48:43,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:48:43,473 INFO L82 PathProgramCache]: Analyzing trace with hash -482650664, now seen corresponding path program 235 times [2021-03-24 13:48:43,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:48:43,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583584230] [2021-03-24 13:48:43,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:48:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:48:43,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:43,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:48:43,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:43,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:48:43,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:43,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:48:43,489 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:48:43,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:48:43,506 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:48:43,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:48:43,529 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:48:43,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:48:43,547 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:48:43,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:48:43,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:48:43,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583584230] [2021-03-24 13:48:43,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:48:43,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:48:43,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051925805] [2021-03-24 13:48:43,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:48:43,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:48:43,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:48:43,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:48:43,564 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:48:43,564 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 832 places, 763 transitions, 45955 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:43,564 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:48:43,564 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:48:43,564 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:48:45,137 INFO L129 PetriNetUnfolder]: 279/3564 cut-off events. [2021-03-24 13:48:45,137 INFO L130 PetriNetUnfolder]: For 254840/254960 co-relation queries the response was YES. [2021-03-24 13:48:45,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37064 conditions, 3564 events. 279/3564 cut-off events. For 254840/254960 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 53091 event pairs, 13 based on Foata normal form. 13/3528 useless extension candidates. Maximal degree in co-relation 36860. Up to 681 conditions per place. [2021-03-24 13:48:45,195 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 487 selfloop transitions, 281 changer transitions 3/785 dead transitions. [2021-03-24 13:48:45,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 838 places, 785 transitions, 48387 flow [2021-03-24 13:48:45,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:48:45,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:48:45,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:48:45,196 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:48:45,196 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:48:45,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:48:45,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:48:45,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:48:45,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:45,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:45,197 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:45,197 INFO L185 Difference]: Start difference. First operand has 832 places, 763 transitions, 45955 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:48:45,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 838 places, 785 transitions, 48387 flow [2021-03-24 13:48:47,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 836 places, 785 transitions, 48205 flow, removed 14 selfloop flow, removed 2 redundant places. [2021-03-24 13:48:47,574 INFO L241 Difference]: Finished difference. Result has 837 places, 760 transitions, 46158 flow [2021-03-24 13:48:47,574 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=45781, PETRI_DIFFERENCE_MINUEND_PLACES=829, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46158, PETRI_PLACES=837, PETRI_TRANSITIONS=760} [2021-03-24 13:48:47,574 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 799 predicate places. [2021-03-24 13:48:47,574 INFO L480 AbstractCegarLoop]: Abstraction has has 837 places, 760 transitions, 46158 flow [2021-03-24 13:48:47,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:47,574 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:48:47,574 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:48:47,574 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-03-24 13:48:47,574 INFO L428 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:48:47,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:48:47,575 INFO L82 PathProgramCache]: Analyzing trace with hash -2093591622, now seen corresponding path program 236 times [2021-03-24 13:48:47,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:48:47,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056407031] [2021-03-24 13:48:47,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:48:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:48:47,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:47,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:48:47,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:47,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:48:47,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:47,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:48:47,590 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:48:47,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:48:47,607 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:48:47,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:48:47,627 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:48:47,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:48:47,644 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:48:47,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:48:47,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:48:47,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056407031] [2021-03-24 13:48:47,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:48:47,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:48:47,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236501839] [2021-03-24 13:48:47,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:48:47,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:48:47,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:48:47,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:48:47,662 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:48:47,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 837 places, 760 transitions, 46158 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:47,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:48:47,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:48:47,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:48:49,255 INFO L129 PetriNetUnfolder]: 278/3553 cut-off events. [2021-03-24 13:48:49,255 INFO L130 PetriNetUnfolder]: For 256896/257019 co-relation queries the response was YES. [2021-03-24 13:48:49,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37277 conditions, 3553 events. 278/3553 cut-off events. For 256896/257019 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 52847 event pairs, 13 based on Foata normal form. 13/3517 useless extension candidates. Maximal degree in co-relation 37073. Up to 681 conditions per place. [2021-03-24 13:48:49,311 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 485 selfloop transitions, 280 changer transitions 3/782 dead transitions. [2021-03-24 13:48:49,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 843 places, 782 transitions, 48584 flow [2021-03-24 13:48:49,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:48:49,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:48:49,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:48:49,312 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:48:49,312 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:48:49,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:48:49,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:48:49,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:48:49,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:49,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:49,313 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:49,313 INFO L185 Difference]: Start difference. First operand has 837 places, 760 transitions, 46158 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:48:49,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 843 places, 782 transitions, 48584 flow [2021-03-24 13:48:51,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 837 places, 782 transitions, 47907 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-03-24 13:48:51,552 INFO L241 Difference]: Finished difference. Result has 838 places, 757 transitions, 45858 flow [2021-03-24 13:48:51,553 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=45489, PETRI_DIFFERENCE_MINUEND_PLACES=830, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45858, PETRI_PLACES=838, PETRI_TRANSITIONS=757} [2021-03-24 13:48:51,553 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 800 predicate places. [2021-03-24 13:48:51,553 INFO L480 AbstractCegarLoop]: Abstraction has has 838 places, 757 transitions, 45858 flow [2021-03-24 13:48:51,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:51,553 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:48:51,553 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:48:51,553 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-03-24 13:48:51,553 INFO L428 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:48:51,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:48:51,553 INFO L82 PathProgramCache]: Analyzing trace with hash 350650448, now seen corresponding path program 237 times [2021-03-24 13:48:51,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:48:51,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892175272] [2021-03-24 13:48:51,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:48:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:48:51,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:51,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:48:51,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:51,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:48:51,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:51,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:48:51,568 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:48:51,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:48:51,578 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:48:51,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:48:51,591 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:48:51,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:48:51,608 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:48:51,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:48:51,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:48:51,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892175272] [2021-03-24 13:48:51,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:48:51,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:48:51,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85989278] [2021-03-24 13:48:51,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:48:51,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:48:51,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:48:51,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:48:51,625 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:48:51,625 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 838 places, 757 transitions, 45858 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:51,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:48:51,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:48:51,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:48:53,203 INFO L129 PetriNetUnfolder]: 277/3542 cut-off events. [2021-03-24 13:48:53,203 INFO L130 PetriNetUnfolder]: For 255765/255886 co-relation queries the response was YES. [2021-03-24 13:48:53,252 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37045 conditions, 3542 events. 277/3542 cut-off events. For 255765/255886 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 52673 event pairs, 13 based on Foata normal form. 12/3505 useless extension candidates. Maximal degree in co-relation 36841. Up to 681 conditions per place. [2021-03-24 13:48:53,259 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 486 selfloop transitions, 279 changer transitions 0/779 dead transitions. [2021-03-24 13:48:53,259 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 843 places, 779 transitions, 48278 flow [2021-03-24 13:48:53,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:48:53,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:48:53,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:48:53,260 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:48:53,260 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:48:53,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:48:53,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:48:53,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:48:53,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:53,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:53,261 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:53,261 INFO L185 Difference]: Start difference. First operand has 838 places, 757 transitions, 45858 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:48:53,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 843 places, 779 transitions, 48278 flow [2021-03-24 13:48:55,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 836 places, 779 transitions, 47652 flow, removed 14 selfloop flow, removed 7 redundant places. [2021-03-24 13:48:55,602 INFO L241 Difference]: Finished difference. Result has 838 places, 763 transitions, 46176 flow [2021-03-24 13:48:55,602 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=45242, PETRI_DIFFERENCE_MINUEND_PLACES=829, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46176, PETRI_PLACES=838, PETRI_TRANSITIONS=763} [2021-03-24 13:48:55,602 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 800 predicate places. [2021-03-24 13:48:55,602 INFO L480 AbstractCegarLoop]: Abstraction has has 838 places, 763 transitions, 46176 flow [2021-03-24 13:48:55,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:55,602 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:48:55,602 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:48:55,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-03-24 13:48:55,603 INFO L428 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:48:55,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:48:55,603 INFO L82 PathProgramCache]: Analyzing trace with hash 598847904, now seen corresponding path program 238 times [2021-03-24 13:48:55,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:48:55,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980539836] [2021-03-24 13:48:55,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:48:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:48:55,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:55,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:48:55,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:55,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:48:55,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:55,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:48:55,618 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:48:55,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:48:55,628 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:48:55,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:48:55,641 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:48:55,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:48:55,659 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:48:55,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:48:55,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:48:55,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980539836] [2021-03-24 13:48:55,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:48:55,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:48:55,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296547244] [2021-03-24 13:48:55,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:48:55,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:48:55,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:48:55,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:48:55,677 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:48:55,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 838 places, 763 transitions, 46176 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:55,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:48:55,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:48:55,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:48:57,267 INFO L129 PetriNetUnfolder]: 277/3541 cut-off events. [2021-03-24 13:48:57,267 INFO L130 PetriNetUnfolder]: For 256663/256786 co-relation queries the response was YES. [2021-03-24 13:48:57,315 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37022 conditions, 3541 events. 277/3541 cut-off events. For 256663/256786 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 52623 event pairs, 13 based on Foata normal form. 13/3505 useless extension candidates. Maximal degree in co-relation 36818. Up to 681 conditions per place. [2021-03-24 13:48:57,323 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 486 selfloop transitions, 274 changer transitions 5/779 dead transitions. [2021-03-24 13:48:57,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 845 places, 779 transitions, 48286 flow [2021-03-24 13:48:57,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:48:57,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:48:57,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:48:57,324 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:48:57,324 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:48:57,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:48:57,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:48:57,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:48:57,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:57,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:57,325 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:57,325 INFO L185 Difference]: Start difference. First operand has 838 places, 763 transitions, 46176 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:48:57,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 845 places, 779 transitions, 48286 flow [2021-03-24 13:48:59,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 840 places, 779 transitions, 47719 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-03-24 13:48:59,611 INFO L241 Difference]: Finished difference. Result has 841 places, 758 transitions, 45813 flow [2021-03-24 13:48:59,612 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=45609, PETRI_DIFFERENCE_MINUEND_PLACES=833, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45813, PETRI_PLACES=841, PETRI_TRANSITIONS=758} [2021-03-24 13:48:59,612 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 803 predicate places. [2021-03-24 13:48:59,612 INFO L480 AbstractCegarLoop]: Abstraction has has 841 places, 758 transitions, 45813 flow [2021-03-24 13:48:59,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:59,612 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:48:59,612 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:48:59,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-03-24 13:48:59,612 INFO L428 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:48:59,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:48:59,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1682436388, now seen corresponding path program 239 times [2021-03-24 13:48:59,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:48:59,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558730586] [2021-03-24 13:48:59,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:48:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:48:59,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:59,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:48:59,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:59,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:48:59,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:59,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:48:59,627 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:48:59,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:48:59,636 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:48:59,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:48:59,649 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:48:59,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:48:59,666 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:48:59,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:48:59,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:48:59,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558730586] [2021-03-24 13:48:59,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:48:59,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:48:59,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915444233] [2021-03-24 13:48:59,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:48:59,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:48:59,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:48:59,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:48:59,683 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:48:59,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 841 places, 758 transitions, 45813 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:59,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:48:59,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:48:59,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:49:01,185 INFO L129 PetriNetUnfolder]: 276/3524 cut-off events. [2021-03-24 13:49:01,186 INFO L130 PetriNetUnfolder]: For 257162/257285 co-relation queries the response was YES. [2021-03-24 13:49:01,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37150 conditions, 3524 events. 276/3524 cut-off events. For 257162/257285 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 52362 event pairs, 13 based on Foata normal form. 13/3488 useless extension candidates. Maximal degree in co-relation 36946. Up to 681 conditions per place. [2021-03-24 13:49:01,241 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 467 selfloop transitions, 293 changer transitions 0/774 dead transitions. [2021-03-24 13:49:01,242 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 846 places, 774 transitions, 47921 flow [2021-03-24 13:49:01,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:49:01,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:49:01,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:49:01,242 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:49:01,242 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:49:01,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:49:01,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:49:01,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:49:01,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:01,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:01,243 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:01,243 INFO L185 Difference]: Start difference. First operand has 841 places, 758 transitions, 45813 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:49:01,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 846 places, 774 transitions, 47921 flow [2021-03-24 13:49:03,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 840 places, 774 transitions, 47366 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-03-24 13:49:03,611 INFO L241 Difference]: Finished difference. Result has 842 places, 770 transitions, 46526 flow [2021-03-24 13:49:03,611 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=45274, PETRI_DIFFERENCE_MINUEND_PLACES=833, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46526, PETRI_PLACES=842, PETRI_TRANSITIONS=770} [2021-03-24 13:49:03,611 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 804 predicate places. [2021-03-24 13:49:03,611 INFO L480 AbstractCegarLoop]: Abstraction has has 842 places, 770 transitions, 46526 flow [2021-03-24 13:49:03,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:03,612 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:49:03,612 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:49:03,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-03-24 13:49:03,612 INFO L428 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:49:03,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:49:03,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1296373604, now seen corresponding path program 240 times [2021-03-24 13:49:03,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:49:03,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085200762] [2021-03-24 13:49:03,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:49:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:49:03,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:03,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:49:03,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:03,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:49:03,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:03,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:49:03,630 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:49:03,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:49:03,640 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:49:03,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:49:03,652 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:49:03,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:49:03,670 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:49:03,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:49:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:49:03,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085200762] [2021-03-24 13:49:03,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:49:03,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:49:03,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962583448] [2021-03-24 13:49:03,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:49:03,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:49:03,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:49:03,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:49:03,688 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:49:03,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 842 places, 770 transitions, 46526 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:03,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:49:03,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:49:03,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:49:05,365 INFO L129 PetriNetUnfolder]: 276/3523 cut-off events. [2021-03-24 13:49:05,365 INFO L130 PetriNetUnfolder]: For 258178/258303 co-relation queries the response was YES. [2021-03-24 13:49:05,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36895 conditions, 3523 events. 276/3523 cut-off events. For 258178/258303 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 52366 event pairs, 13 based on Foata normal form. 13/3487 useless extension candidates. Maximal degree in co-relation 36691. Up to 681 conditions per place. [2021-03-24 13:49:05,415 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 468 selfloop transitions, 292 changer transitions 0/774 dead transitions. [2021-03-24 13:49:05,415 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 849 places, 774 transitions, 48102 flow [2021-03-24 13:49:05,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:49:05,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:49:05,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:49:05,416 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:49:05,416 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:49:05,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:49:05,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:49:05,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:49:05,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:05,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:05,417 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:05,417 INFO L185 Difference]: Start difference. First operand has 842 places, 770 transitions, 46526 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:49:05,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 849 places, 774 transitions, 48102 flow [2021-03-24 13:49:07,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 847 places, 774 transitions, 47666 flow, removed 31 selfloop flow, removed 2 redundant places. [2021-03-24 13:49:07,650 INFO L241 Difference]: Finished difference. Result has 848 places, 770 transitions, 46677 flow [2021-03-24 13:49:07,650 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=46090, PETRI_DIFFERENCE_MINUEND_PLACES=840, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46677, PETRI_PLACES=848, PETRI_TRANSITIONS=770} [2021-03-24 13:49:07,651 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 810 predicate places. [2021-03-24 13:49:07,651 INFO L480 AbstractCegarLoop]: Abstraction has has 848 places, 770 transitions, 46677 flow [2021-03-24 13:49:07,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:07,651 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:49:07,651 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:49:07,651 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-03-24 13:49:07,651 INFO L428 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:49:07,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:49:07,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1001589950, now seen corresponding path program 241 times [2021-03-24 13:49:07,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:49:07,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657027887] [2021-03-24 13:49:07,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:49:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:49:07,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:07,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:49:07,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:07,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:49:07,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:07,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:49:07,666 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:49:07,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:49:07,675 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:49:07,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:49:07,689 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:49:07,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:49:07,707 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:49:07,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:49:07,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:49:07,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657027887] [2021-03-24 13:49:07,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:49:07,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:49:07,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541381787] [2021-03-24 13:49:07,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:49:07,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:49:07,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:49:07,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:49:07,725 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:49:07,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 848 places, 770 transitions, 46677 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:07,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:49:07,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:49:07,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:49:09,304 INFO L129 PetriNetUnfolder]: 276/3522 cut-off events. [2021-03-24 13:49:09,304 INFO L130 PetriNetUnfolder]: For 260659/260782 co-relation queries the response was YES. [2021-03-24 13:49:09,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37392 conditions, 3522 events. 276/3522 cut-off events. For 260659/260782 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 52316 event pairs, 13 based on Foata normal form. 12/3485 useless extension candidates. Maximal degree in co-relation 37187. Up to 681 conditions per place. [2021-03-24 13:49:09,360 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 470 selfloop transitions, 290 changer transitions 0/774 dead transitions. [2021-03-24 13:49:09,360 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 855 places, 774 transitions, 48261 flow [2021-03-24 13:49:09,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:49:09,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:49:09,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:49:09,361 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:49:09,361 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:49:09,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:49:09,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:49:09,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:49:09,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:09,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:09,362 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:09,362 INFO L185 Difference]: Start difference. First operand has 848 places, 770 transitions, 46677 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:49:09,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 855 places, 774 transitions, 48261 flow [2021-03-24 13:49:11,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 852 places, 774 transitions, 47814 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-24 13:49:11,789 INFO L241 Difference]: Finished difference. Result has 853 places, 770 transitions, 46813 flow [2021-03-24 13:49:11,789 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=46230, PETRI_DIFFERENCE_MINUEND_PLACES=845, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=290, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46813, PETRI_PLACES=853, PETRI_TRANSITIONS=770} [2021-03-24 13:49:11,789 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 815 predicate places. [2021-03-24 13:49:11,789 INFO L480 AbstractCegarLoop]: Abstraction has has 853 places, 770 transitions, 46813 flow [2021-03-24 13:49:11,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:11,789 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:49:11,790 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:49:11,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-03-24 13:49:11,790 INFO L428 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:49:11,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:49:11,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1059269852, now seen corresponding path program 242 times [2021-03-24 13:49:11,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:49:11,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375564036] [2021-03-24 13:49:11,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:49:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:49:11,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:11,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:49:11,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:11,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:49:11,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:11,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:49:11,805 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:49:11,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:49:11,814 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:49:11,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:49:11,827 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:49:11,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:49:11,853 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:49:11,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:49:11,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:49:11,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375564036] [2021-03-24 13:49:11,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:49:11,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:49:11,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222315861] [2021-03-24 13:49:11,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:49:11,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:49:11,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:49:11,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:49:11,870 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:49:11,870 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 853 places, 770 transitions, 46813 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:11,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:49:11,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:49:11,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:49:13,478 INFO L129 PetriNetUnfolder]: 276/3521 cut-off events. [2021-03-24 13:49:13,478 INFO L130 PetriNetUnfolder]: For 264055/264178 co-relation queries the response was YES. [2021-03-24 13:49:13,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37866 conditions, 3521 events. 276/3521 cut-off events. For 264055/264178 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 52302 event pairs, 13 based on Foata normal form. 12/3484 useless extension candidates. Maximal degree in co-relation 37660. Up to 681 conditions per place. [2021-03-24 13:49:13,535 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 471 selfloop transitions, 289 changer transitions 0/774 dead transitions. [2021-03-24 13:49:13,535 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 860 places, 774 transitions, 48405 flow [2021-03-24 13:49:13,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:49:13,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:49:13,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:49:13,536 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:49:13,536 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:49:13,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:49:13,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:49:13,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:49:13,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:13,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:13,537 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:13,537 INFO L185 Difference]: Start difference. First operand has 853 places, 770 transitions, 46813 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:49:13,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 860 places, 774 transitions, 48405 flow [2021-03-24 13:49:15,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 857 places, 774 transitions, 47904 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-24 13:49:15,952 INFO L241 Difference]: Finished difference. Result has 858 places, 770 transitions, 46893 flow [2021-03-24 13:49:15,952 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=46312, PETRI_DIFFERENCE_MINUEND_PLACES=850, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46893, PETRI_PLACES=858, PETRI_TRANSITIONS=770} [2021-03-24 13:49:15,953 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 820 predicate places. [2021-03-24 13:49:15,953 INFO L480 AbstractCegarLoop]: Abstraction has has 858 places, 770 transitions, 46893 flow [2021-03-24 13:49:15,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:15,953 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:49:15,953 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:49:15,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-03-24 13:49:15,953 INFO L428 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:49:15,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:49:15,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1089526684, now seen corresponding path program 243 times [2021-03-24 13:49:15,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:49:15,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359329905] [2021-03-24 13:49:15,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:49:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:49:15,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:15,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:49:15,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:15,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:49:15,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:15,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:49:15,969 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:49:15,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:49:15,979 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:49:15,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:49:15,992 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:49:15,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:49:16,010 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:49:16,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:49:16,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:49:16,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359329905] [2021-03-24 13:49:16,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:49:16,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:49:16,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674946905] [2021-03-24 13:49:16,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:49:16,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:49:16,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:49:16,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:49:16,028 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:49:16,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 858 places, 770 transitions, 46893 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:16,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:49:16,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:49:16,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:49:17,646 INFO L129 PetriNetUnfolder]: 276/3520 cut-off events. [2021-03-24 13:49:17,646 INFO L130 PetriNetUnfolder]: For 267182/267309 co-relation queries the response was YES. [2021-03-24 13:49:17,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38262 conditions, 3520 events. 276/3520 cut-off events. For 267182/267309 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 52336 event pairs, 13 based on Foata normal form. 13/3484 useless extension candidates. Maximal degree in co-relation 38055. Up to 681 conditions per place. [2021-03-24 13:49:17,705 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 470 selfloop transitions, 290 changer transitions 0/774 dead transitions. [2021-03-24 13:49:17,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 865 places, 774 transitions, 48493 flow [2021-03-24 13:49:17,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:49:17,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:49:17,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:49:17,706 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:49:17,706 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:49:17,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:49:17,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:49:17,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:49:17,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:17,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:17,707 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:17,707 INFO L185 Difference]: Start difference. First operand has 858 places, 770 transitions, 46893 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:49:17,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 865 places, 774 transitions, 48493 flow [2021-03-24 13:49:20,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 860 places, 774 transitions, 47665 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-03-24 13:49:20,122 INFO L241 Difference]: Finished difference. Result has 861 places, 770 transitions, 46648 flow [2021-03-24 13:49:20,123 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=46065, PETRI_DIFFERENCE_MINUEND_PLACES=853, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=290, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46648, PETRI_PLACES=861, PETRI_TRANSITIONS=770} [2021-03-24 13:49:20,123 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 823 predicate places. [2021-03-24 13:49:20,123 INFO L480 AbstractCegarLoop]: Abstraction has has 861 places, 770 transitions, 46648 flow [2021-03-24 13:49:20,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:20,123 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:49:20,123 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:49:20,123 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-03-24 13:49:20,123 INFO L428 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:49:20,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:49:20,123 INFO L82 PathProgramCache]: Analyzing trace with hash 308638032, now seen corresponding path program 244 times [2021-03-24 13:49:20,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:49:20,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367381348] [2021-03-24 13:49:20,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:49:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:49:20,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:20,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:49:20,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:20,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:49:20,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:20,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:49:20,138 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:49:20,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:49:20,155 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:49:20,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:49:20,168 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:49:20,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:49:20,185 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:49:20,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:49:20,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:49:20,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367381348] [2021-03-24 13:49:20,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:49:20,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:49:20,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052394999] [2021-03-24 13:49:20,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:49:20,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:49:20,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:49:20,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:49:20,203 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:49:20,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 861 places, 770 transitions, 46648 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:20,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:49:20,203 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:49:20,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:49:21,790 INFO L129 PetriNetUnfolder]: 276/3519 cut-off events. [2021-03-24 13:49:21,791 INFO L130 PetriNetUnfolder]: For 267688/267807 co-relation queries the response was YES. [2021-03-24 13:49:21,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38379 conditions, 3519 events. 276/3519 cut-off events. For 267688/267807 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 52300 event pairs, 13 based on Foata normal form. 13/3483 useless extension candidates. Maximal degree in co-relation 38171. Up to 681 conditions per place. [2021-03-24 13:49:21,847 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 478 selfloop transitions, 282 changer transitions 0/774 dead transitions. [2021-03-24 13:49:21,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 868 places, 774 transitions, 48256 flow [2021-03-24 13:49:21,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:49:21,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:49:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:49:21,848 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:49:21,848 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:49:21,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:49:21,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:49:21,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:49:21,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:21,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:21,849 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:21,849 INFO L185 Difference]: Start difference. First operand has 861 places, 770 transitions, 46648 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:49:21,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 868 places, 774 transitions, 48256 flow [2021-03-24 13:49:24,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 865 places, 774 transitions, 47759 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-03-24 13:49:24,231 INFO L241 Difference]: Finished difference. Result has 866 places, 770 transitions, 46718 flow [2021-03-24 13:49:24,232 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=46151, PETRI_DIFFERENCE_MINUEND_PLACES=858, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46718, PETRI_PLACES=866, PETRI_TRANSITIONS=770} [2021-03-24 13:49:24,232 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 828 predicate places. [2021-03-24 13:49:24,232 INFO L480 AbstractCegarLoop]: Abstraction has has 866 places, 770 transitions, 46718 flow [2021-03-24 13:49:24,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:24,232 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:49:24,232 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:49:24,232 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-03-24 13:49:24,232 INFO L428 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:49:24,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:49:24,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1872992792, now seen corresponding path program 245 times [2021-03-24 13:49:24,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:49:24,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535191445] [2021-03-24 13:49:24,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:49:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:49:24,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:24,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:49:24,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:24,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:49:24,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:24,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:49:24,248 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:49:24,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:49:24,264 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:49:24,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:49:24,278 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:49:24,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:49:24,295 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:49:24,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:49:24,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:49:24,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535191445] [2021-03-24 13:49:24,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:49:24,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:49:24,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903953130] [2021-03-24 13:49:24,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:49:24,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:49:24,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:49:24,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:49:24,313 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:49:24,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 866 places, 770 transitions, 46718 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:24,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:49:24,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:49:24,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:49:25,920 INFO L129 PetriNetUnfolder]: 276/3518 cut-off events. [2021-03-24 13:49:25,920 INFO L130 PetriNetUnfolder]: For 271333/271451 co-relation queries the response was YES. [2021-03-24 13:49:25,970 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38763 conditions, 3518 events. 276/3518 cut-off events. For 271333/271451 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 52283 event pairs, 13 based on Foata normal form. 12/3481 useless extension candidates. Maximal degree in co-relation 38554. Up to 681 conditions per place. [2021-03-24 13:49:25,978 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 477 selfloop transitions, 277 changer transitions 6/774 dead transitions. [2021-03-24 13:49:25,978 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 873 places, 774 transitions, 48334 flow [2021-03-24 13:49:25,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:49:25,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:49:25,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:49:25,979 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:49:25,979 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:49:25,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:49:25,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:49:25,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:49:25,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:25,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:25,980 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:25,980 INFO L185 Difference]: Start difference. First operand has 866 places, 770 transitions, 46718 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:49:25,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 873 places, 774 transitions, 48334 flow [2021-03-24 13:49:28,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 869 places, 774 transitions, 47820 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-03-24 13:49:28,433 INFO L241 Difference]: Finished difference. Result has 870 places, 764 transitions, 46326 flow [2021-03-24 13:49:28,434 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=46204, PETRI_DIFFERENCE_MINUEND_PLACES=862, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46326, PETRI_PLACES=870, PETRI_TRANSITIONS=764} [2021-03-24 13:49:28,434 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 832 predicate places. [2021-03-24 13:49:28,434 INFO L480 AbstractCegarLoop]: Abstraction has has 870 places, 764 transitions, 46326 flow [2021-03-24 13:49:28,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:28,434 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:49:28,434 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:49:28,434 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-03-24 13:49:28,434 INFO L428 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:49:28,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:49:28,434 INFO L82 PathProgramCache]: Analyzing trace with hash -585214522, now seen corresponding path program 246 times [2021-03-24 13:49:28,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:49:28,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069360720] [2021-03-24 13:49:28,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:49:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:49:28,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:28,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:49:28,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:28,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:49:28,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:28,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:49:28,450 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:49:28,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:49:28,460 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:49:28,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:49:28,473 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:49:28,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:49:28,491 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:49:28,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:49:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:49:28,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069360720] [2021-03-24 13:49:28,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:49:28,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:49:28,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328287180] [2021-03-24 13:49:28,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:49:28,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:49:28,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:49:28,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:49:28,509 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:49:28,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 870 places, 764 transitions, 46326 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:28,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:49:28,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:49:28,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:49:29,997 INFO L129 PetriNetUnfolder]: 275/3501 cut-off events. [2021-03-24 13:49:29,997 INFO L130 PetriNetUnfolder]: For 273177/273294 co-relation queries the response was YES. [2021-03-24 13:49:30,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38871 conditions, 3501 events. 275/3501 cut-off events. For 273177/273294 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 51974 event pairs, 13 based on Foata normal form. 12/3465 useless extension candidates. Maximal degree in co-relation 38661. Up to 681 conditions per place. [2021-03-24 13:49:30,053 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 460 selfloop transitions, 279 changer transitions 15/768 dead transitions. [2021-03-24 13:49:30,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 875 places, 768 transitions, 47938 flow [2021-03-24 13:49:30,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:49:30,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:49:30,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:49:30,054 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:49:30,054 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:49:30,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:49:30,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:49:30,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:49:30,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:30,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:30,055 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:30,055 INFO L185 Difference]: Start difference. First operand has 870 places, 764 transitions, 46326 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:49:30,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 875 places, 768 transitions, 47938 flow [2021-03-24 13:49:32,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 869 places, 768 transitions, 47380 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-03-24 13:49:32,412 INFO L241 Difference]: Finished difference. Result has 870 places, 749 transitions, 45082 flow [2021-03-24 13:49:32,412 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=45784, PETRI_DIFFERENCE_MINUEND_PLACES=862, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45082, PETRI_PLACES=870, PETRI_TRANSITIONS=749} [2021-03-24 13:49:32,412 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 832 predicate places. [2021-03-24 13:49:32,412 INFO L480 AbstractCegarLoop]: Abstraction has has 870 places, 749 transitions, 45082 flow [2021-03-24 13:49:32,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:32,412 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:49:32,412 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:49:32,412 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-03-24 13:49:32,412 INFO L428 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:49:32,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:49:32,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1539229100, now seen corresponding path program 247 times [2021-03-24 13:49:32,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:49:32,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748612191] [2021-03-24 13:49:32,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:49:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:49:32,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:32,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:49:32,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:32,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:49:32,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:32,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:49:32,427 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:49:32,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:49:32,437 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:49:32,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:49:32,460 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:49:32,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:49:32,477 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:49:32,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:49:32,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:49:32,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748612191] [2021-03-24 13:49:32,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:49:32,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:49:32,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790675081] [2021-03-24 13:49:32,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:49:32,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:49:32,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:49:32,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:49:32,494 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:49:32,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 870 places, 749 transitions, 45082 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:32,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:49:32,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:49:32,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:49:34,065 INFO L129 PetriNetUnfolder]: 274/3458 cut-off events. [2021-03-24 13:49:34,065 INFO L130 PetriNetUnfolder]: For 262265/262384 co-relation queries the response was YES. [2021-03-24 13:49:34,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37773 conditions, 3458 events. 274/3458 cut-off events. For 262265/262384 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 51164 event pairs, 13 based on Foata normal form. 13/3424 useless extension candidates. Maximal degree in co-relation 37564. Up to 681 conditions per place. [2021-03-24 13:49:34,115 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 475 selfloop transitions, 261 changer transitions 3/753 dead transitions. [2021-03-24 13:49:34,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 869 places, 753 transitions, 46656 flow [2021-03-24 13:49:34,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:49:34,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:49:34,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-03-24 13:49:34,116 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2021-03-24 13:49:34,116 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-03-24 13:49:34,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-03-24 13:49:34,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:49:34,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-03-24 13:49:34,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:34,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:34,116 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:34,116 INFO L185 Difference]: Start difference. First operand has 870 places, 749 transitions, 45082 flow. Second operand 8 states and 466 transitions. [2021-03-24 13:49:34,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 869 places, 753 transitions, 46656 flow [2021-03-24 13:49:36,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 858 places, 753 transitions, 45983 flow, removed 36 selfloop flow, removed 11 redundant places. [2021-03-24 13:49:36,362 INFO L241 Difference]: Finished difference. Result has 859 places, 746 transitions, 44781 flow [2021-03-24 13:49:36,362 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=44457, PETRI_DIFFERENCE_MINUEND_PLACES=851, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=44781, PETRI_PLACES=859, PETRI_TRANSITIONS=746} [2021-03-24 13:49:36,362 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 821 predicate places. [2021-03-24 13:49:36,362 INFO L480 AbstractCegarLoop]: Abstraction has has 859 places, 746 transitions, 44781 flow [2021-03-24 13:49:36,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:36,362 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:49:36,362 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:49:36,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-03-24 13:49:36,362 INFO L428 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:49:36,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:49:36,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1671933284, now seen corresponding path program 248 times [2021-03-24 13:49:36,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:49:36,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959070206] [2021-03-24 13:49:36,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:49:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:49:36,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:36,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:49:36,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:36,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:49:36,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:36,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:49:36,381 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:49:36,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:49:36,391 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:49:36,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:49:36,404 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:49:36,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:49:36,421 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:49:36,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:49:36,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:49:36,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959070206] [2021-03-24 13:49:36,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:49:36,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:49:36,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535660846] [2021-03-24 13:49:36,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:49:36,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:49:36,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:49:36,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:49:36,438 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:49:36,439 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 859 places, 746 transitions, 44781 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:36,439 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:49:36,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:49:36,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:49:37,956 INFO L129 PetriNetUnfolder]: 273/3447 cut-off events. [2021-03-24 13:49:37,957 INFO L130 PetriNetUnfolder]: For 246015/246137 co-relation queries the response was YES. [2021-03-24 13:49:38,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35903 conditions, 3447 events. 273/3447 cut-off events. For 246015/246137 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 50939 event pairs, 13 based on Foata normal form. 13/3413 useless extension candidates. Maximal degree in co-relation 35699. Up to 681 conditions per place. [2021-03-24 13:49:38,010 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 474 selfloop transitions, 259 changer transitions 3/750 dead transitions. [2021-03-24 13:49:38,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 864 places, 750 transitions, 46309 flow [2021-03-24 13:49:38,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:49:38,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:49:38,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-03-24 13:49:38,011 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2021-03-24 13:49:38,011 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-03-24 13:49:38,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-03-24 13:49:38,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:49:38,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-03-24 13:49:38,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:38,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:38,012 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:38,012 INFO L185 Difference]: Start difference. First operand has 859 places, 746 transitions, 44781 flow. Second operand 8 states and 466 transitions. [2021-03-24 13:49:38,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 864 places, 750 transitions, 46309 flow [2021-03-24 13:49:40,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 859 places, 750 transitions, 45784 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 13:49:40,345 INFO L241 Difference]: Finished difference. Result has 860 places, 743 transitions, 44586 flow [2021-03-24 13:49:40,346 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=44264, PETRI_DIFFERENCE_MINUEND_PLACES=852, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=746, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=44586, PETRI_PLACES=860, PETRI_TRANSITIONS=743} [2021-03-24 13:49:40,346 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 822 predicate places. [2021-03-24 13:49:40,346 INFO L480 AbstractCegarLoop]: Abstraction has has 860 places, 743 transitions, 44586 flow [2021-03-24 13:49:40,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:40,346 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:49:40,346 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:49:40,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-03-24 13:49:40,346 INFO L428 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:49:40,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:49:40,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1022596158, now seen corresponding path program 249 times [2021-03-24 13:49:40,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:49:40,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958952739] [2021-03-24 13:49:40,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:49:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:49:40,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:40,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:49:40,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:40,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:49:40,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:40,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:49:40,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:40,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:49:40,370 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:49:40,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:49:40,383 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:49:40,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:49:40,400 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:49:40,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:49:40,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:49:40,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958952739] [2021-03-24 13:49:40,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:49:40,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:49:40,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028234671] [2021-03-24 13:49:40,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:49:40,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:49:40,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:49:40,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:49:40,418 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:49:40,418 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 860 places, 743 transitions, 44586 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:40,418 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:49:40,418 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:49:40,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:49:41,902 INFO L129 PetriNetUnfolder]: 272/3436 cut-off events. [2021-03-24 13:49:41,902 INFO L130 PetriNetUnfolder]: For 245140/245257 co-relation queries the response was YES. [2021-03-24 13:49:41,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35777 conditions, 3436 events. 272/3436 cut-off events. For 245140/245257 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 50754 event pairs, 13 based on Foata normal form. 12/3401 useless extension candidates. Maximal degree in co-relation 35573. Up to 681 conditions per place. [2021-03-24 13:49:41,956 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 462 selfloop transitions, 268 changer transitions 3/747 dead transitions. [2021-03-24 13:49:41,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 865 places, 747 transitions, 46108 flow [2021-03-24 13:49:41,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:49:41,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:49:41,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-03-24 13:49:41,957 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2021-03-24 13:49:41,957 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-03-24 13:49:41,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-03-24 13:49:41,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:49:41,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-03-24 13:49:41,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:41,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:41,957 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:41,958 INFO L185 Difference]: Start difference. First operand has 860 places, 743 transitions, 44586 flow. Second operand 8 states and 466 transitions. [2021-03-24 13:49:41,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 865 places, 747 transitions, 46108 flow [2021-03-24 13:49:44,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 860 places, 747 transitions, 45585 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 13:49:44,222 INFO L241 Difference]: Finished difference. Result has 861 places, 740 transitions, 44411 flow [2021-03-24 13:49:44,222 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=44071, PETRI_DIFFERENCE_MINUEND_PLACES=853, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=44411, PETRI_PLACES=861, PETRI_TRANSITIONS=740} [2021-03-24 13:49:44,222 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 823 predicate places. [2021-03-24 13:49:44,222 INFO L480 AbstractCegarLoop]: Abstraction has has 861 places, 740 transitions, 44411 flow [2021-03-24 13:49:44,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:44,222 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:49:44,222 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:49:44,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-03-24 13:49:44,222 INFO L428 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:49:44,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:49:44,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1695029408, now seen corresponding path program 250 times [2021-03-24 13:49:44,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:49:44,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528096490] [2021-03-24 13:49:44,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:49:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:49:44,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:44,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:49:44,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:44,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:49:44,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:44,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:49:44,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:44,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:49:44,251 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:49:44,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:49:44,272 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:49:44,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:49:44,290 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:49:44,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:49:44,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:49:44,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528096490] [2021-03-24 13:49:44,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:49:44,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:49:44,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775068837] [2021-03-24 13:49:44,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:49:44,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:49:44,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:49:44,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:49:44,307 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:49:44,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 861 places, 740 transitions, 44411 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:44,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:49:44,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:49:44,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:49:45,846 INFO L129 PetriNetUnfolder]: 271/3425 cut-off events. [2021-03-24 13:49:45,846 INFO L130 PetriNetUnfolder]: For 244315/244432 co-relation queries the response was YES. [2021-03-24 13:49:45,895 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35656 conditions, 3425 events. 271/3425 cut-off events. For 244315/244432 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 50519 event pairs, 13 based on Foata normal form. 12/3390 useless extension candidates. Maximal degree in co-relation 35452. Up to 681 conditions per place. [2021-03-24 13:49:45,902 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 462 selfloop transitions, 266 changer transitions 2/744 dead transitions. [2021-03-24 13:49:45,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 866 places, 744 transitions, 45927 flow [2021-03-24 13:49:45,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:49:45,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:49:45,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:49:45,903 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:49:45,903 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:49:45,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:49:45,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:49:45,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:49:45,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:45,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:45,903 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:45,904 INFO L185 Difference]: Start difference. First operand has 861 places, 740 transitions, 44411 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:49:45,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 866 places, 744 transitions, 45927 flow [2021-03-24 13:49:48,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 861 places, 744 transitions, 45392 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 13:49:48,031 INFO L241 Difference]: Finished difference. Result has 862 places, 738 transitions, 44263 flow [2021-03-24 13:49:48,032 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=43884, PETRI_DIFFERENCE_MINUEND_PLACES=854, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=44263, PETRI_PLACES=862, PETRI_TRANSITIONS=738} [2021-03-24 13:49:48,032 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 824 predicate places. [2021-03-24 13:49:48,032 INFO L480 AbstractCegarLoop]: Abstraction has has 862 places, 738 transitions, 44263 flow [2021-03-24 13:49:48,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:48,032 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:49:48,032 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:49:48,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-03-24 13:49:48,032 INFO L428 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:49:48,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:49:48,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1855235390, now seen corresponding path program 251 times [2021-03-24 13:49:48,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:49:48,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429058867] [2021-03-24 13:49:48,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:49:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:49:48,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:48,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:49:48,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:48,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:49:48,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:48,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:49:48,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:48,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:49:48,056 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:49:48,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:49:48,076 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:49:48,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:49:48,094 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:49:48,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:49:48,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:49:48,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429058867] [2021-03-24 13:49:48,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:49:48,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:49:48,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965568007] [2021-03-24 13:49:48,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:49:48,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:49:48,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:49:48,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:49:48,111 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:49:48,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 862 places, 738 transitions, 44263 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:48,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:49:48,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:49:48,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:49:49,618 INFO L129 PetriNetUnfolder]: 270/3415 cut-off events. [2021-03-24 13:49:49,618 INFO L130 PetriNetUnfolder]: For 243639/243759 co-relation queries the response was YES. [2021-03-24 13:49:49,664 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35558 conditions, 3415 events. 270/3415 cut-off events. For 243639/243759 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 50394 event pairs, 13 based on Foata normal form. 13/3381 useless extension candidates. Maximal degree in co-relation 35354. Up to 681 conditions per place. [2021-03-24 13:49:49,671 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 460 selfloop transitions, 263 changer transitions 5/742 dead transitions. [2021-03-24 13:49:49,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 868 places, 742 transitions, 45775 flow [2021-03-24 13:49:49,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:49:49,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:49:49,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-03-24 13:49:49,672 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2021-03-24 13:49:49,673 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-03-24 13:49:49,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-03-24 13:49:49,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:49:49,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-03-24 13:49:49,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:49,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:49,673 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:49,673 INFO L185 Difference]: Start difference. First operand has 862 places, 738 transitions, 44263 flow. Second operand 8 states and 466 transitions. [2021-03-24 13:49:49,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 868 places, 742 transitions, 45775 flow [2021-03-24 13:49:51,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 864 places, 742 transitions, 45344 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-03-24 13:49:51,888 INFO L241 Difference]: Finished difference. Result has 865 places, 733 transitions, 44080 flow [2021-03-24 13:49:51,888 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=43840, PETRI_DIFFERENCE_MINUEND_PLACES=857, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=44080, PETRI_PLACES=865, PETRI_TRANSITIONS=733} [2021-03-24 13:49:51,888 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 827 predicate places. [2021-03-24 13:49:51,888 INFO L480 AbstractCegarLoop]: Abstraction has has 865 places, 733 transitions, 44080 flow [2021-03-24 13:49:51,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:51,888 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:49:51,888 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:49:51,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-03-24 13:49:51,888 INFO L428 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:49:51,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:49:51,888 INFO L82 PathProgramCache]: Analyzing trace with hash 199178106, now seen corresponding path program 252 times [2021-03-24 13:49:51,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:49:51,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146926356] [2021-03-24 13:49:51,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:49:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:49:51,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:51,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:49:51,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:51,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:49:51,900 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:49:51,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:49:51,911 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:49:51,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:49:51,926 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:49:51,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:49:51,946 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:49:51,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:49:51,963 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:49:51,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:49:51,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:49:51,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146926356] [2021-03-24 13:49:51,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:49:51,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:49:51,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102240099] [2021-03-24 13:49:51,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:49:51,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:49:51,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:49:51,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:49:51,981 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:49:51,981 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 865 places, 733 transitions, 44080 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:51,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:49:51,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:49:51,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:49:53,545 INFO L129 PetriNetUnfolder]: 290/3649 cut-off events. [2021-03-24 13:49:53,546 INFO L130 PetriNetUnfolder]: For 254201/254243 co-relation queries the response was YES. [2021-03-24 13:49:53,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37473 conditions, 3649 events. 290/3649 cut-off events. For 254201/254243 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 54594 event pairs, 2 based on Foata normal form. 3/3607 useless extension candidates. Maximal degree in co-relation 37270. Up to 678 conditions per place. [2021-03-24 13:49:53,605 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 546 selfloop transitions, 297 changer transitions 2/859 dead transitions. [2021-03-24 13:49:53,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 870 places, 859 transitions, 52056 flow [2021-03-24 13:49:53,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:49:53,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:49:53,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:49:53,606 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:49:53,606 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:49:53,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:49:53,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:49:53,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:49:53,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:53,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:53,607 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:53,607 INFO L185 Difference]: Start difference. First operand has 865 places, 733 transitions, 44080 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:49:53,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 870 places, 859 transitions, 52056 flow [2021-03-24 13:49:55,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 865 places, 859 transitions, 51435 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 13:49:55,989 INFO L241 Difference]: Finished difference. Result has 871 places, 771 transitions, 46667 flow [2021-03-24 13:49:55,989 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=43559, PETRI_DIFFERENCE_MINUEND_PLACES=858, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=46667, PETRI_PLACES=871, PETRI_TRANSITIONS=771} [2021-03-24 13:49:55,989 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 833 predicate places. [2021-03-24 13:49:55,989 INFO L480 AbstractCegarLoop]: Abstraction has has 871 places, 771 transitions, 46667 flow [2021-03-24 13:49:55,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:55,989 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:49:55,989 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:49:55,990 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-03-24 13:49:55,990 INFO L428 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:49:55,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:49:55,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1362439686, now seen corresponding path program 253 times [2021-03-24 13:49:55,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:49:55,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023104651] [2021-03-24 13:49:55,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:49:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:49:55,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:55,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:49:55,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:55,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:49:55,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:55,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:49:56,005 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:49:56,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:49:56,015 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:49:56,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:49:56,028 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:49:56,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:49:56,045 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:49:56,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:49:56,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:49:56,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023104651] [2021-03-24 13:49:56,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:49:56,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:49:56,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457735970] [2021-03-24 13:49:56,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:49:56,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:49:56,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:49:56,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:49:56,063 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:49:56,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 871 places, 771 transitions, 46667 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:56,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:49:56,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:49:56,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:49:57,702 INFO L129 PetriNetUnfolder]: 290/3661 cut-off events. [2021-03-24 13:49:57,703 INFO L130 PetriNetUnfolder]: For 264891/264997 co-relation queries the response was YES. [2021-03-24 13:49:57,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37851 conditions, 3661 events. 290/3661 cut-off events. For 264891/264997 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 54772 event pairs, 4 based on Foata normal form. 3/3615 useless extension candidates. Maximal degree in co-relation 37643. Up to 669 conditions per place. [2021-03-24 13:49:57,760 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 509 selfloop transitions, 306 changer transitions 2/831 dead transitions. [2021-03-24 13:49:57,760 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 877 places, 831 transitions, 51108 flow [2021-03-24 13:49:57,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:49:57,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:49:57,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:49:57,761 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:49:57,761 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:49:57,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:49:57,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:49:57,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:49:57,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:57,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:57,762 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:57,762 INFO L185 Difference]: Start difference. First operand has 871 places, 771 transitions, 46667 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:49:57,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 877 places, 831 transitions, 51108 flow [2021-03-24 13:50:00,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 873 places, 831 transitions, 50852 flow, removed 45 selfloop flow, removed 4 redundant places. [2021-03-24 13:50:00,203 INFO L241 Difference]: Finished difference. Result has 878 places, 793 transitions, 48548 flow [2021-03-24 13:50:00,203 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=46436, PETRI_DIFFERENCE_MINUEND_PLACES=866, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=284, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48548, PETRI_PLACES=878, PETRI_TRANSITIONS=793} [2021-03-24 13:50:00,203 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 840 predicate places. [2021-03-24 13:50:00,203 INFO L480 AbstractCegarLoop]: Abstraction has has 878 places, 793 transitions, 48548 flow [2021-03-24 13:50:00,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:00,203 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:50:00,203 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:50:00,204 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-03-24 13:50:00,204 INFO L428 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:50:00,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:50:00,204 INFO L82 PathProgramCache]: Analyzing trace with hash 484220564, now seen corresponding path program 254 times [2021-03-24 13:50:00,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:50:00,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304636716] [2021-03-24 13:50:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:50:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:50:00,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:00,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:50:00,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:00,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:50:00,213 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:50:00,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:50:00,225 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:50:00,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:50:00,239 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:50:00,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:50:00,252 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:50:00,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:50:00,269 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:50:00,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:50:00,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:50:00,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304636716] [2021-03-24 13:50:00,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:50:00,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:50:00,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343840191] [2021-03-24 13:50:00,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:50:00,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:50:00,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:50:00,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:50:00,287 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:50:00,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 878 places, 793 transitions, 48548 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:00,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:50:00,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:50:00,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:50:02,084 INFO L129 PetriNetUnfolder]: 295/3739 cut-off events. [2021-03-24 13:50:02,084 INFO L130 PetriNetUnfolder]: For 278701/278877 co-relation queries the response was YES. [2021-03-24 13:50:02,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38882 conditions, 3739 events. 295/3739 cut-off events. For 278701/278877 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 56205 event pairs, 4 based on Foata normal form. 17/3703 useless extension candidates. Maximal degree in co-relation 38671. Up to 640 conditions per place. [2021-03-24 13:50:02,141 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 561 selfloop transitions, 312 changer transitions 2/889 dead transitions. [2021-03-24 13:50:02,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 884 places, 889 transitions, 55134 flow [2021-03-24 13:50:02,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:50:02,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:50:02,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:50:02,142 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:50:02,142 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:50:02,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:50:02,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:50:02,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:50:02,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:02,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:02,143 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:02,143 INFO L185 Difference]: Start difference. First operand has 878 places, 793 transitions, 48548 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:50:02,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 884 places, 889 transitions, 55134 flow [2021-03-24 13:50:04,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 879 places, 889 transitions, 54492 flow, removed 54 selfloop flow, removed 5 redundant places. [2021-03-24 13:50:04,711 INFO L241 Difference]: Finished difference. Result has 885 places, 827 transitions, 51007 flow [2021-03-24 13:50:04,711 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=47978, PETRI_DIFFERENCE_MINUEND_PLACES=872, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=51007, PETRI_PLACES=885, PETRI_TRANSITIONS=827} [2021-03-24 13:50:04,711 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 847 predicate places. [2021-03-24 13:50:04,711 INFO L480 AbstractCegarLoop]: Abstraction has has 885 places, 827 transitions, 51007 flow [2021-03-24 13:50:04,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:04,711 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:50:04,711 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:50:04,711 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-03-24 13:50:04,711 INFO L428 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:50:04,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:50:04,712 INFO L82 PathProgramCache]: Analyzing trace with hash 594261394, now seen corresponding path program 255 times [2021-03-24 13:50:04,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:50:04,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585882643] [2021-03-24 13:50:04,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:50:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:50:04,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:04,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:50:04,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:04,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:50:04,724 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:50:04,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:50:04,735 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:50:04,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:50:04,750 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:50:04,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:50:04,772 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:50:04,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:50:04,790 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:50:04,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:50:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:50:04,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585882643] [2021-03-24 13:50:04,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:50:04,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:50:04,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267110784] [2021-03-24 13:50:04,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:50:04,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:50:04,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:50:04,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:50:04,809 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:50:04,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 885 places, 827 transitions, 51007 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:04,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:50:04,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:50:04,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:50:06,704 INFO L129 PetriNetUnfolder]: 294/3728 cut-off events. [2021-03-24 13:50:06,704 INFO L130 PetriNetUnfolder]: For 287354/287534 co-relation queries the response was YES. [2021-03-24 13:50:06,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39130 conditions, 3728 events. 294/3728 cut-off events. For 287354/287534 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 55920 event pairs, 4 based on Foata normal form. 26/3701 useless extension candidates. Maximal degree in co-relation 38915. Up to 570 conditions per place. [2021-03-24 13:50:06,768 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 483 selfloop transitions, 343 changer transitions 2/842 dead transitions. [2021-03-24 13:50:06,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 891 places, 842 transitions, 53389 flow [2021-03-24 13:50:06,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:50:06,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:50:06,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:50:06,769 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:50:06,769 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:50:06,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:50:06,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:50:06,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:50:06,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:06,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:06,770 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:06,770 INFO L185 Difference]: Start difference. First operand has 885 places, 827 transitions, 51007 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:50:06,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 891 places, 842 transitions, 53389 flow [2021-03-24 13:50:09,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 885 places, 842 transitions, 52899 flow, removed 64 selfloop flow, removed 6 redundant places. [2021-03-24 13:50:09,581 INFO L241 Difference]: Finished difference. Result has 887 places, 829 transitions, 51426 flow [2021-03-24 13:50:09,582 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=50525, PETRI_DIFFERENCE_MINUEND_PLACES=878, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=827, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=339, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=51426, PETRI_PLACES=887, PETRI_TRANSITIONS=829} [2021-03-24 13:50:09,582 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 849 predicate places. [2021-03-24 13:50:09,582 INFO L480 AbstractCegarLoop]: Abstraction has has 887 places, 829 transitions, 51426 flow [2021-03-24 13:50:09,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:09,582 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:50:09,582 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:50:09,582 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-03-24 13:50:09,582 INFO L428 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:50:09,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:50:09,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1513736530, now seen corresponding path program 256 times [2021-03-24 13:50:09,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:50:09,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249602547] [2021-03-24 13:50:09,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:50:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:50:09,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:09,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:50:09,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:09,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:50:09,592 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:50:09,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:50:09,603 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:50:09,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:50:09,618 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:50:09,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:50:09,638 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:50:09,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:50:09,656 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:50:09,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:50:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:50:09,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249602547] [2021-03-24 13:50:09,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:50:09,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:50:09,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682782386] [2021-03-24 13:50:09,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:50:09,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:50:09,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:50:09,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:50:09,674 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:50:09,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 887 places, 829 transitions, 51426 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:09,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:50:09,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:50:09,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:50:11,477 INFO L129 PetriNetUnfolder]: 293/3718 cut-off events. [2021-03-24 13:50:11,477 INFO L130 PetriNetUnfolder]: For 290916/291096 co-relation queries the response was YES. [2021-03-24 13:50:11,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39219 conditions, 3718 events. 293/3718 cut-off events. For 290916/291096 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 55789 event pairs, 4 based on Foata normal form. 26/3691 useless extension candidates. Maximal degree in co-relation 39004. Up to 568 conditions per place. [2021-03-24 13:50:11,538 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 482 selfloop transitions, 341 changer transitions 3/840 dead transitions. [2021-03-24 13:50:11,538 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 892 places, 840 transitions, 53536 flow [2021-03-24 13:50:11,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:50:11,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:50:11,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:50:11,539 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:50:11,539 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:50:11,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:50:11,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:50:11,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:50:11,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:11,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:11,540 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:11,540 INFO L185 Difference]: Start difference. First operand has 887 places, 829 transitions, 51426 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:50:11,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 892 places, 840 transitions, 53536 flow [2021-03-24 13:50:14,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 886 places, 840 transitions, 52727 flow, removed 41 selfloop flow, removed 6 redundant places. [2021-03-24 13:50:14,334 INFO L241 Difference]: Finished difference. Result has 887 places, 826 transitions, 51130 flow [2021-03-24 13:50:14,334 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=50625, PETRI_DIFFERENCE_MINUEND_PLACES=879, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=829, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=341, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=51130, PETRI_PLACES=887, PETRI_TRANSITIONS=826} [2021-03-24 13:50:14,334 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 849 predicate places. [2021-03-24 13:50:14,334 INFO L480 AbstractCegarLoop]: Abstraction has has 887 places, 826 transitions, 51130 flow [2021-03-24 13:50:14,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:14,334 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:50:14,334 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:50:14,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-03-24 13:50:14,334 INFO L428 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:50:14,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:50:14,335 INFO L82 PathProgramCache]: Analyzing trace with hash 245564578, now seen corresponding path program 257 times [2021-03-24 13:50:14,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:50:14,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275994100] [2021-03-24 13:50:14,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:50:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:50:14,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:14,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:50:14,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:14,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:50:14,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:14,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:50:14,350 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:50:14,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:50:14,360 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:50:14,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:50:14,374 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:50:14,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:50:14,392 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:50:14,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:50:14,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:50:14,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275994100] [2021-03-24 13:50:14,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:50:14,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:50:14,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27503383] [2021-03-24 13:50:14,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:50:14,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:50:14,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:50:14,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:50:14,410 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:50:14,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 887 places, 826 transitions, 51130 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:14,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:50:14,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:50:14,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:50:16,317 INFO L129 PetriNetUnfolder]: 292/3707 cut-off events. [2021-03-24 13:50:16,317 INFO L130 PetriNetUnfolder]: For 288168/288210 co-relation queries the response was YES. [2021-03-24 13:50:16,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39029 conditions, 3707 events. 292/3707 cut-off events. For 288168/288210 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 55600 event pairs, 5 based on Foata normal form. 8/3670 useless extension candidates. Maximal degree in co-relation 38815. Up to 566 conditions per place. [2021-03-24 13:50:16,382 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 503 selfloop transitions, 320 changer transitions 0/837 dead transitions. [2021-03-24 13:50:16,382 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 892 places, 837 transitions, 53234 flow [2021-03-24 13:50:16,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:50:16,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:50:16,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:50:16,383 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:50:16,383 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:50:16,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:50:16,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:50:16,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:50:16,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:16,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:16,384 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:16,384 INFO L185 Difference]: Start difference. First operand has 887 places, 826 transitions, 51130 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:50:16,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 892 places, 837 transitions, 53234 flow [2021-03-24 13:50:19,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 886 places, 837 transitions, 52532 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-03-24 13:50:19,221 INFO L241 Difference]: Finished difference. Result has 887 places, 826 transitions, 51079 flow [2021-03-24 13:50:19,221 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=50436, PETRI_DIFFERENCE_MINUEND_PLACES=879, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=51079, PETRI_PLACES=887, PETRI_TRANSITIONS=826} [2021-03-24 13:50:19,221 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 849 predicate places. [2021-03-24 13:50:19,221 INFO L480 AbstractCegarLoop]: Abstraction has has 887 places, 826 transitions, 51079 flow [2021-03-24 13:50:19,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:19,222 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:50:19,222 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:50:19,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-03-24 13:50:19,222 INFO L428 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:50:19,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:50:19,222 INFO L82 PathProgramCache]: Analyzing trace with hash -268348098, now seen corresponding path program 258 times [2021-03-24 13:50:19,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:50:19,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772874953] [2021-03-24 13:50:19,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:50:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:50:19,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:19,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:50:19,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:19,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:50:19,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:19,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:50:19,248 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:50:19,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:50:19,265 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:50:19,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:50:19,279 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:50:19,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:50:19,296 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:50:19,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:50:19,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:50:19,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772874953] [2021-03-24 13:50:19,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:50:19,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:50:19,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453694863] [2021-03-24 13:50:19,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:50:19,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:50:19,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:50:19,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:50:19,314 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:50:19,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 887 places, 826 transitions, 51079 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:19,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:50:19,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:50:19,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:50:21,051 INFO L129 PetriNetUnfolder]: 292/3706 cut-off events. [2021-03-24 13:50:21,051 INFO L130 PetriNetUnfolder]: For 287590/287632 co-relation queries the response was YES. [2021-03-24 13:50:21,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39010 conditions, 3706 events. 292/3706 cut-off events. For 287590/287632 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 55559 event pairs, 4 based on Foata normal form. 5/3666 useless extension candidates. Maximal degree in co-relation 38796. Up to 667 conditions per place. [2021-03-24 13:50:21,111 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 529 selfloop transitions, 324 changer transitions 2/869 dead transitions. [2021-03-24 13:50:21,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 894 places, 869 transitions, 54721 flow [2021-03-24 13:50:21,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:50:21,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:50:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:50:21,112 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:50:21,112 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:50:21,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:50:21,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:50:21,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:50:21,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:21,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:21,113 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:21,113 INFO L185 Difference]: Start difference. First operand has 887 places, 826 transitions, 51079 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:50:21,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 894 places, 869 transitions, 54721 flow [2021-03-24 13:50:23,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 889 places, 869 transitions, 54068 flow, removed 34 selfloop flow, removed 5 redundant places. [2021-03-24 13:50:23,823 INFO L241 Difference]: Finished difference. Result has 893 places, 834 transitions, 51790 flow [2021-03-24 13:50:23,823 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=50465, PETRI_DIFFERENCE_MINUEND_PLACES=882, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=315, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=51790, PETRI_PLACES=893, PETRI_TRANSITIONS=834} [2021-03-24 13:50:23,823 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 855 predicate places. [2021-03-24 13:50:23,823 INFO L480 AbstractCegarLoop]: Abstraction has has 893 places, 834 transitions, 51790 flow [2021-03-24 13:50:23,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:23,823 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:50:23,823 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:50:23,824 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-03-24 13:50:23,824 INFO L428 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:50:23,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:50:23,824 INFO L82 PathProgramCache]: Analyzing trace with hash 422507020, now seen corresponding path program 259 times [2021-03-24 13:50:23,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:50:23,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329653141] [2021-03-24 13:50:23,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:50:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:50:23,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:23,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:50:23,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:23,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:50:23,834 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:50:23,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:50:23,844 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:50:23,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:50:23,859 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:50:23,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:50:23,879 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:50:23,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:50:23,897 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:50:23,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:50:23,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:50:23,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329653141] [2021-03-24 13:50:23,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:50:23,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:50:23,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422351634] [2021-03-24 13:50:23,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:50:23,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:50:23,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:50:23,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:50:23,915 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:50:23,915 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 893 places, 834 transitions, 51790 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:23,915 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:50:23,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:50:23,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:50:25,803 INFO L129 PetriNetUnfolder]: 291/3695 cut-off events. [2021-03-24 13:50:25,803 INFO L130 PetriNetUnfolder]: For 295023/295203 co-relation queries the response was YES. [2021-03-24 13:50:25,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39414 conditions, 3695 events. 291/3695 cut-off events. For 295023/295203 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 55388 event pairs, 4 based on Foata normal form. 26/3668 useless extension candidates. Maximal degree in co-relation 39197. Up to 564 conditions per place. [2021-03-24 13:50:25,862 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 493 selfloop transitions, 335 changer transitions 3/845 dead transitions. [2021-03-24 13:50:25,863 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 899 places, 845 transitions, 53918 flow [2021-03-24 13:50:25,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:50:25,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:50:25,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:50:25,863 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:50:25,864 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:50:25,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:50:25,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:50:25,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:50:25,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:25,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:25,864 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:25,864 INFO L185 Difference]: Start difference. First operand has 893 places, 834 transitions, 51790 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:50:25,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 899 places, 845 transitions, 53918 flow [2021-03-24 13:50:28,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 896 places, 845 transitions, 53427 flow, removed 51 selfloop flow, removed 3 redundant places. [2021-03-24 13:50:28,555 INFO L241 Difference]: Finished difference. Result has 897 places, 831 transitions, 51798 flow [2021-03-24 13:50:28,556 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=51307, PETRI_DIFFERENCE_MINUEND_PLACES=889, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=51798, PETRI_PLACES=897, PETRI_TRANSITIONS=831} [2021-03-24 13:50:28,556 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 859 predicate places. [2021-03-24 13:50:28,556 INFO L480 AbstractCegarLoop]: Abstraction has has 897 places, 831 transitions, 51798 flow [2021-03-24 13:50:28,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:28,556 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:50:28,556 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:50:28,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-03-24 13:50:28,556 INFO L428 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:50:28,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:50:28,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1290212920, now seen corresponding path program 260 times [2021-03-24 13:50:28,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:50:28,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070410823] [2021-03-24 13:50:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:50:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:50:28,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:28,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:50:28,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:28,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:50:28,566 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:50:28,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:50:28,577 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:50:28,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:50:28,591 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:50:28,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:50:28,605 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:50:28,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:50:28,636 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:50:28,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:50:28,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:50:28,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070410823] [2021-03-24 13:50:28,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:50:28,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:50:28,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358975976] [2021-03-24 13:50:28,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:50:28,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:50:28,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:50:28,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:50:28,655 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:50:28,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 897 places, 831 transitions, 51798 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:28,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:50:28,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:50:28,655 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:50:30,472 INFO L129 PetriNetUnfolder]: 290/3684 cut-off events. [2021-03-24 13:50:30,472 INFO L130 PetriNetUnfolder]: For 294518/294698 co-relation queries the response was YES. [2021-03-24 13:50:30,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39477 conditions, 3684 events. 290/3684 cut-off events. For 294518/294698 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 55170 event pairs, 4 based on Foata normal form. 26/3657 useless extension candidates. Maximal degree in co-relation 39260. Up to 562 conditions per place. [2021-03-24 13:50:30,535 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 488 selfloop transitions, 340 changer transitions 0/842 dead transitions. [2021-03-24 13:50:30,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 902 places, 842 transitions, 53920 flow [2021-03-24 13:50:30,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:50:30,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:50:30,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:50:30,536 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:50:30,537 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:50:30,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:50:30,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:50:30,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:50:30,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:30,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:30,537 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:30,537 INFO L185 Difference]: Start difference. First operand has 897 places, 831 transitions, 51798 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:50:30,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 902 places, 842 transitions, 53920 flow [2021-03-24 13:50:33,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 899 places, 842 transitions, 53702 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-03-24 13:50:33,274 INFO L241 Difference]: Finished difference. Result has 900 places, 831 transitions, 52271 flow [2021-03-24 13:50:33,275 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=51588, PETRI_DIFFERENCE_MINUEND_PLACES=892, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=340, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=52271, PETRI_PLACES=900, PETRI_TRANSITIONS=831} [2021-03-24 13:50:33,275 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 862 predicate places. [2021-03-24 13:50:33,275 INFO L480 AbstractCegarLoop]: Abstraction has has 900 places, 831 transitions, 52271 flow [2021-03-24 13:50:33,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:33,275 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:50:33,275 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:50:33,275 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-03-24 13:50:33,275 INFO L428 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:50:33,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:50:33,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1670408906, now seen corresponding path program 261 times [2021-03-24 13:50:33,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:50:33,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183686732] [2021-03-24 13:50:33,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:50:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:50:33,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:33,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:50:33,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:33,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:50:33,284 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:50:33,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:50:33,295 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:50:33,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:50:33,310 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:50:33,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:50:33,324 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:50:33,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:50:33,341 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:50:33,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:50:33,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:50:33,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183686732] [2021-03-24 13:50:33,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:50:33,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:50:33,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414413296] [2021-03-24 13:50:33,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:50:33,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:50:33,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:50:33,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:50:33,360 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:50:33,360 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 900 places, 831 transitions, 52271 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:33,360 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:50:33,360 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:50:33,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:50:35,251 INFO L129 PetriNetUnfolder]: 290/3683 cut-off events. [2021-03-24 13:50:35,251 INFO L130 PetriNetUnfolder]: For 298405/298585 co-relation queries the response was YES. [2021-03-24 13:50:35,306 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39791 conditions, 3683 events. 290/3683 cut-off events. For 298405/298585 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 55158 event pairs, 4 based on Foata normal form. 26/3656 useless extension candidates. Maximal degree in co-relation 39574. Up to 562 conditions per place. [2021-03-24 13:50:35,314 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 487 selfloop transitions, 336 changer transitions 5/842 dead transitions. [2021-03-24 13:50:35,314 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 907 places, 842 transitions, 54393 flow [2021-03-24 13:50:35,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:50:35,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:50:35,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:50:35,315 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:50:35,315 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:50:35,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:50:35,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:50:35,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:50:35,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:35,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:35,316 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:35,316 INFO L185 Difference]: Start difference. First operand has 900 places, 831 transitions, 52271 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:50:35,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 907 places, 842 transitions, 54393 flow [2021-03-24 13:50:38,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 902 places, 842 transitions, 53766 flow, removed 17 selfloop flow, removed 5 redundant places. [2021-03-24 13:50:38,189 INFO L241 Difference]: Finished difference. Result has 903 places, 826 transitions, 51967 flow [2021-03-24 13:50:38,189 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=51644, PETRI_DIFFERENCE_MINUEND_PLACES=895, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=51967, PETRI_PLACES=903, PETRI_TRANSITIONS=826} [2021-03-24 13:50:38,189 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 865 predicate places. [2021-03-24 13:50:38,189 INFO L480 AbstractCegarLoop]: Abstraction has has 903 places, 826 transitions, 51967 flow [2021-03-24 13:50:38,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:38,189 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:50:38,189 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:50:38,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-03-24 13:50:38,189 INFO L428 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:50:38,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:50:38,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1108180056, now seen corresponding path program 262 times [2021-03-24 13:50:38,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:50:38,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120185861] [2021-03-24 13:50:38,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:50:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:50:38,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:38,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:50:38,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:38,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:50:38,199 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:50:38,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:50:38,209 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:50:38,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:50:38,219 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:50:38,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:50:38,233 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:50:38,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:50:38,250 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:50:38,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:50:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:50:38,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120185861] [2021-03-24 13:50:38,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:50:38,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:50:38,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792309132] [2021-03-24 13:50:38,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:50:38,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:50:38,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:50:38,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:50:38,267 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:50:38,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 903 places, 826 transitions, 51967 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:38,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:50:38,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:50:38,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:50:40,067 INFO L129 PetriNetUnfolder]: 289/3668 cut-off events. [2021-03-24 13:50:40,068 INFO L130 PetriNetUnfolder]: For 298459/298501 co-relation queries the response was YES. [2021-03-24 13:50:40,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39993 conditions, 3668 events. 289/3668 cut-off events. For 298459/298501 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 54912 event pairs, 5 based on Foata normal form. 8/3633 useless extension candidates. Maximal degree in co-relation 39776. Up to 562 conditions per place. [2021-03-24 13:50:40,130 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 490 selfloop transitions, 333 changer transitions 0/837 dead transitions. [2021-03-24 13:50:40,130 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 906 places, 837 transitions, 54087 flow [2021-03-24 13:50:40,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:50:40,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:50:40,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:50:40,131 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:50:40,131 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:50:40,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:50:40,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:50:40,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:50:40,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:40,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:40,132 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:40,132 INFO L185 Difference]: Start difference. First operand has 903 places, 826 transitions, 51967 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:50:40,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 906 places, 837 transitions, 54087 flow [2021-03-24 13:50:43,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 900 places, 837 transitions, 53409 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-03-24 13:50:43,040 INFO L241 Difference]: Finished difference. Result has 901 places, 826 transitions, 51974 flow [2021-03-24 13:50:43,040 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=51305, PETRI_DIFFERENCE_MINUEND_PLACES=893, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=333, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=51974, PETRI_PLACES=901, PETRI_TRANSITIONS=826} [2021-03-24 13:50:43,040 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 863 predicate places. [2021-03-24 13:50:43,040 INFO L480 AbstractCegarLoop]: Abstraction has has 901 places, 826 transitions, 51974 flow [2021-03-24 13:50:43,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:43,040 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:50:43,040 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:50:43,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-03-24 13:50:43,040 INFO L428 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:50:43,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:50:43,041 INFO L82 PathProgramCache]: Analyzing trace with hash 985644602, now seen corresponding path program 263 times [2021-03-24 13:50:43,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:50:43,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715372070] [2021-03-24 13:50:43,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:50:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:50:43,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:43,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:50:43,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:43,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:50:43,051 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:50:43,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:50:43,061 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:50:43,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:50:43,077 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:50:43,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:50:43,097 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:50:43,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:50:43,115 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:50:43,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:50:43,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:50:43,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715372070] [2021-03-24 13:50:43,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:50:43,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:50:43,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399928694] [2021-03-24 13:50:43,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:50:43,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:50:43,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:50:43,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:50:43,133 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:50:43,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 901 places, 826 transitions, 51974 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:43,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:50:43,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:50:43,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:50:44,869 INFO L129 PetriNetUnfolder]: 289/3667 cut-off events. [2021-03-24 13:50:44,870 INFO L130 PetriNetUnfolder]: For 296186/296366 co-relation queries the response was YES. [2021-03-24 13:50:44,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39650 conditions, 3667 events. 289/3667 cut-off events. For 296186/296366 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 54898 event pairs, 4 based on Foata normal form. 26/3642 useless extension candidates. Maximal degree in co-relation 39434. Up to 562 conditions per place. [2021-03-24 13:50:44,931 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 478 selfloop transitions, 343 changer transitions 2/837 dead transitions. [2021-03-24 13:50:44,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 908 places, 837 transitions, 54086 flow [2021-03-24 13:50:44,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:50:44,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:50:44,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:50:44,932 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:50:44,932 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:50:44,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:50:44,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:50:44,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:50:44,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:44,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:44,933 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:44,933 INFO L185 Difference]: Start difference. First operand has 901 places, 826 transitions, 51974 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:50:44,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 908 places, 837 transitions, 54086 flow [2021-03-24 13:50:47,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 903 places, 837 transitions, 53380 flow, removed 62 selfloop flow, removed 5 redundant places. [2021-03-24 13:50:47,727 INFO L241 Difference]: Finished difference. Result has 904 places, 824 transitions, 51820 flow [2021-03-24 13:50:47,727 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=51268, PETRI_DIFFERENCE_MINUEND_PLACES=896, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=343, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=51820, PETRI_PLACES=904, PETRI_TRANSITIONS=824} [2021-03-24 13:50:47,727 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 866 predicate places. [2021-03-24 13:50:47,727 INFO L480 AbstractCegarLoop]: Abstraction has has 904 places, 824 transitions, 51820 flow [2021-03-24 13:50:47,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:47,727 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:50:47,727 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:50:47,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-03-24 13:50:47,728 INFO L428 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:50:47,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:50:47,728 INFO L82 PathProgramCache]: Analyzing trace with hash 445241468, now seen corresponding path program 264 times [2021-03-24 13:50:47,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:50:47,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362415026] [2021-03-24 13:50:47,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:50:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:50:47,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:47,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:50:47,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:47,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:50:47,738 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:50:47,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:50:47,748 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:50:47,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:50:47,758 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:50:47,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:50:47,771 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:50:47,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:50:47,789 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:50:47,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:50:47,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:50:47,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362415026] [2021-03-24 13:50:47,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:50:47,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:50:47,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995701013] [2021-03-24 13:50:47,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:50:47,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:50:47,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:50:47,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:50:47,807 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:50:47,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 904 places, 824 transitions, 51820 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:47,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:50:47,807 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:50:47,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:50:49,586 INFO L129 PetriNetUnfolder]: 288/3657 cut-off events. [2021-03-24 13:50:49,586 INFO L130 PetriNetUnfolder]: For 294507/294687 co-relation queries the response was YES. [2021-03-24 13:50:49,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39975 conditions, 3657 events. 288/3657 cut-off events. For 294507/294687 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 54664 event pairs, 4 based on Foata normal form. 31/3637 useless extension candidates. Maximal degree in co-relation 39759. Up to 562 conditions per place. [2021-03-24 13:50:49,644 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 490 selfloop transitions, 331 changer transitions 0/835 dead transitions. [2021-03-24 13:50:49,644 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 909 places, 835 transitions, 53936 flow [2021-03-24 13:50:49,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:50:49,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:50:49,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:50:49,645 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:50:49,645 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:50:49,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:50:49,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:50:49,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:50:49,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:49,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:49,646 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:49,646 INFO L185 Difference]: Start difference. First operand has 904 places, 824 transitions, 51820 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:50:49,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 909 places, 835 transitions, 53936 flow [2021-03-24 13:50:52,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 905 places, 835 transitions, 53443 flow, removed 32 selfloop flow, removed 4 redundant places. [2021-03-24 13:50:52,288 INFO L241 Difference]: Finished difference. Result has 906 places, 824 transitions, 52000 flow [2021-03-24 13:50:52,288 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=51335, PETRI_DIFFERENCE_MINUEND_PLACES=898, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=824, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=331, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=52000, PETRI_PLACES=906, PETRI_TRANSITIONS=824} [2021-03-24 13:50:52,288 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 868 predicate places. [2021-03-24 13:50:52,288 INFO L480 AbstractCegarLoop]: Abstraction has has 906 places, 824 transitions, 52000 flow [2021-03-24 13:50:52,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:52,288 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:50:52,288 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:50:52,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-03-24 13:50:52,288 INFO L428 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:50:52,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:50:52,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1250452934, now seen corresponding path program 265 times [2021-03-24 13:50:52,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:50:52,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768800197] [2021-03-24 13:50:52,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:50:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:50:52,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:52,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:50:52,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:52,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:50:52,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:52,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:50:52,304 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:50:52,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:50:52,321 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-24 13:50:52,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 13:50:52,344 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:50:52,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:50:52,362 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:50:52,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:50:52,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:50:52,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768800197] [2021-03-24 13:50:52,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:50:52,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:50:52,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023410626] [2021-03-24 13:50:52,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:50:52,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:50:52,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:50:52,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:50:52,380 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:50:52,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 906 places, 824 transitions, 52000 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:52,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:50:52,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:50:52,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:50:54,174 INFO L129 PetriNetUnfolder]: 288/3656 cut-off events. [2021-03-24 13:50:54,175 INFO L130 PetriNetUnfolder]: For 294994/295174 co-relation queries the response was YES. [2021-03-24 13:50:54,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40147 conditions, 3656 events. 288/3656 cut-off events. For 294994/295174 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 54646 event pairs, 4 based on Foata normal form. 26/3631 useless extension candidates. Maximal degree in co-relation 39931. Up to 564 conditions per place. [2021-03-24 13:50:54,236 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 505 selfloop transitions, 314 changer transitions 2/835 dead transitions. [2021-03-24 13:50:54,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 913 places, 835 transitions, 54116 flow [2021-03-24 13:50:54,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:50:54,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:50:54,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:50:54,237 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:50:54,237 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:50:54,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:50:54,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:50:54,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:50:54,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:54,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:54,238 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:54,238 INFO L185 Difference]: Start difference. First operand has 906 places, 824 transitions, 52000 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:50:54,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 913 places, 835 transitions, 54116 flow [2021-03-24 13:50:56,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 908 places, 835 transitions, 53466 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-03-24 13:50:57,010 INFO L241 Difference]: Finished difference. Result has 910 places, 824 transitions, 52040 flow [2021-03-24 13:50:57,010 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=51350, PETRI_DIFFERENCE_MINUEND_PLACES=901, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=824, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=312, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=52040, PETRI_PLACES=910, PETRI_TRANSITIONS=824} [2021-03-24 13:50:57,011 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 872 predicate places. [2021-03-24 13:50:57,011 INFO L480 AbstractCegarLoop]: Abstraction has has 910 places, 824 transitions, 52040 flow [2021-03-24 13:50:57,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:57,011 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:50:57,011 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:50:57,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-03-24 13:50:57,011 INFO L428 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:50:57,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:50:57,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1590775132, now seen corresponding path program 266 times [2021-03-24 13:50:57,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:50:57,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316182222] [2021-03-24 13:50:57,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:50:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:50:57,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:57,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:50:57,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:57,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:50:57,021 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:50:57,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:50:57,031 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:50:57,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:50:57,041 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:50:57,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:50:57,055 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:50:57,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:50:57,072 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:50:57,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:50:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:50:57,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316182222] [2021-03-24 13:50:57,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:50:57,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:50:57,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285396108] [2021-03-24 13:50:57,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:50:57,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:50:57,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:50:57,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:50:57,090 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:50:57,090 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 910 places, 824 transitions, 52040 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:57,090 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:50:57,090 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:50:57,090 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:50:58,950 INFO L129 PetriNetUnfolder]: 287/3646 cut-off events. [2021-03-24 13:50:58,951 INFO L130 PetriNetUnfolder]: For 297878/297920 co-relation queries the response was YES. [2021-03-24 13:50:59,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40436 conditions, 3646 events. 287/3646 cut-off events. For 297878/297920 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 54483 event pairs, 5 based on Foata normal form. 8/3611 useless extension candidates. Maximal degree in co-relation 40218. Up to 562 conditions per place. [2021-03-24 13:50:59,021 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 489 selfloop transitions, 330 changer transitions 0/833 dead transitions. [2021-03-24 13:50:59,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 915 places, 833 transitions, 54034 flow [2021-03-24 13:50:59,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:50:59,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:50:59,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:50:59,022 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:50:59,022 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:50:59,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:50:59,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:50:59,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:50:59,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:59,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:59,023 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:59,023 INFO L185 Difference]: Start difference. First operand has 910 places, 824 transitions, 52040 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:50:59,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 915 places, 833 transitions, 54034 flow [2021-03-24 13:51:01,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 911 places, 833 transitions, 53502 flow, removed 80 selfloop flow, removed 4 redundant places. [2021-03-24 13:51:01,972 INFO L241 Difference]: Finished difference. Result has 912 places, 824 transitions, 52179 flow [2021-03-24 13:51:01,972 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=51516, PETRI_DIFFERENCE_MINUEND_PLACES=904, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=824, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=52179, PETRI_PLACES=912, PETRI_TRANSITIONS=824} [2021-03-24 13:51:01,972 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 874 predicate places. [2021-03-24 13:51:01,972 INFO L480 AbstractCegarLoop]: Abstraction has has 912 places, 824 transitions, 52179 flow [2021-03-24 13:51:01,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:01,972 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:51:01,972 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:51:01,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-03-24 13:51:01,972 INFO L428 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:51:01,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:51:01,973 INFO L82 PathProgramCache]: Analyzing trace with hash 186998548, now seen corresponding path program 267 times [2021-03-24 13:51:01,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:51:01,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874175041] [2021-03-24 13:51:01,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:51:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:51:01,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:01,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:51:01,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:01,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:51:01,982 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:51:01,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:51:01,992 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:51:01,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:51:02,007 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:51:02,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:51:02,020 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:51:02,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:51:02,037 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:51:02,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:51:02,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:51:02,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874175041] [2021-03-24 13:51:02,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:51:02,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:51:02,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762950125] [2021-03-24 13:51:02,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:51:02,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:51:02,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:51:02,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:51:02,055 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:51:02,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 912 places, 824 transitions, 52179 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:02,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:51:02,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:51:02,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:51:03,870 INFO L129 PetriNetUnfolder]: 287/3645 cut-off events. [2021-03-24 13:51:03,870 INFO L130 PetriNetUnfolder]: For 297498/297540 co-relation queries the response was YES. [2021-03-24 13:51:03,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40573 conditions, 3645 events. 287/3645 cut-off events. For 297498/297540 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 54540 event pairs, 4 based on Foata normal form. 8/3610 useless extension candidates. Maximal degree in co-relation 40356. Up to 562 conditions per place. [2021-03-24 13:51:03,932 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 478 selfloop transitions, 341 changer transitions 0/833 dead transitions. [2021-03-24 13:51:03,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 919 places, 833 transitions, 54173 flow [2021-03-24 13:51:03,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:51:03,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:51:03,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:51:03,933 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:51:03,933 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:51:03,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:51:03,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:51:03,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:51:03,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:03,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:03,934 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:03,934 INFO L185 Difference]: Start difference. First operand has 912 places, 824 transitions, 52179 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:51:03,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 919 places, 833 transitions, 54173 flow [2021-03-24 13:51:07,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 915 places, 833 transitions, 53718 flow, removed 21 selfloop flow, removed 4 redundant places. [2021-03-24 13:51:07,057 INFO L241 Difference]: Finished difference. Result has 916 places, 824 transitions, 52409 flow [2021-03-24 13:51:07,057 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=51724, PETRI_DIFFERENCE_MINUEND_PLACES=908, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=824, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=341, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=52409, PETRI_PLACES=916, PETRI_TRANSITIONS=824} [2021-03-24 13:51:07,057 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 878 predicate places. [2021-03-24 13:51:07,057 INFO L480 AbstractCegarLoop]: Abstraction has has 916 places, 824 transitions, 52409 flow [2021-03-24 13:51:07,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:07,057 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:51:07,057 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:51:07,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-03-24 13:51:07,057 INFO L428 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:51:07,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:51:07,058 INFO L82 PathProgramCache]: Analyzing trace with hash 210164528, now seen corresponding path program 268 times [2021-03-24 13:51:07,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:51:07,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264982089] [2021-03-24 13:51:07,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:51:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:51:07,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:07,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:51:07,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:07,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:51:07,067 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:51:07,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:51:07,078 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:51:07,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:51:07,088 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:51:07,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:51:07,101 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:51:07,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:51:07,120 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:51:07,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:51:07,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:51:07,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264982089] [2021-03-24 13:51:07,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:51:07,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:51:07,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211701314] [2021-03-24 13:51:07,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:51:07,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:51:07,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:51:07,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:51:07,147 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:51:07,147 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 916 places, 824 transitions, 52409 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:07,147 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:51:07,147 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:51:07,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:51:08,783 INFO L129 PetriNetUnfolder]: 287/3644 cut-off events. [2021-03-24 13:51:08,784 INFO L130 PetriNetUnfolder]: For 302344/302524 co-relation queries the response was YES. [2021-03-24 13:51:08,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41104 conditions, 3644 events. 287/3644 cut-off events. For 302344/302524 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 54491 event pairs, 4 based on Foata normal form. 31/3625 useless extension candidates. Maximal degree in co-relation 40887. Up to 562 conditions per place. [2021-03-24 13:51:08,845 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 489 selfloop transitions, 330 changer transitions 0/833 dead transitions. [2021-03-24 13:51:08,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 923 places, 833 transitions, 54411 flow [2021-03-24 13:51:08,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:51:08,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:51:08,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:51:08,846 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:51:08,846 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:51:08,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:51:08,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:51:08,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:51:08,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:08,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:08,847 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:08,847 INFO L185 Difference]: Start difference. First operand has 916 places, 824 transitions, 52409 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:51:08,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 923 places, 833 transitions, 54411 flow [2021-03-24 13:51:11,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 918 places, 833 transitions, 53545 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-24 13:51:11,686 INFO L241 Difference]: Finished difference. Result has 919 places, 824 transitions, 52206 flow [2021-03-24 13:51:11,686 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=51543, PETRI_DIFFERENCE_MINUEND_PLACES=911, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=824, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=52206, PETRI_PLACES=919, PETRI_TRANSITIONS=824} [2021-03-24 13:51:11,686 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 881 predicate places. [2021-03-24 13:51:11,686 INFO L480 AbstractCegarLoop]: Abstraction has has 919 places, 824 transitions, 52206 flow [2021-03-24 13:51:11,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:11,686 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:51:11,686 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:51:11,686 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-03-24 13:51:11,686 INFO L428 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:51:11,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:51:11,686 INFO L82 PathProgramCache]: Analyzing trace with hash 968009274, now seen corresponding path program 269 times [2021-03-24 13:51:11,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:51:11,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556521591] [2021-03-24 13:51:11,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:51:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:51:11,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:11,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:51:11,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:11,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:51:11,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:11,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:51:11,702 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:51:11,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:51:11,712 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:51:11,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:51:11,725 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:51:11,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:51:11,743 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:51:11,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:51:11,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:51:11,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556521591] [2021-03-24 13:51:11,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:51:11,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:51:11,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931144544] [2021-03-24 13:51:11,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:51:11,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:51:11,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:51:11,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:51:11,761 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:51:11,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 919 places, 824 transitions, 52206 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:11,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:51:11,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:51:11,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:51:13,520 INFO L129 PetriNetUnfolder]: 287/3643 cut-off events. [2021-03-24 13:51:13,520 INFO L130 PetriNetUnfolder]: For 303245/303425 co-relation queries the response was YES. [2021-03-24 13:51:13,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41357 conditions, 3643 events. 287/3643 cut-off events. For 303245/303425 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 54396 event pairs, 4 based on Foata normal form. 31/3623 useless extension candidates. Maximal degree in co-relation 41139. Up to 564 conditions per place. [2021-03-24 13:51:13,581 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 503 selfloop transitions, 316 changer transitions 0/833 dead transitions. [2021-03-24 13:51:13,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 926 places, 833 transitions, 54216 flow [2021-03-24 13:51:13,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:51:13,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:51:13,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:51:13,582 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:51:13,582 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:51:13,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:51:13,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:51:13,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:51:13,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:13,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:13,583 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:13,583 INFO L185 Difference]: Start difference. First operand has 919 places, 824 transitions, 52206 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:51:13,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 926 places, 833 transitions, 54216 flow [2021-03-24 13:51:16,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 921 places, 833 transitions, 53576 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-24 13:51:16,187 INFO L241 Difference]: Finished difference. Result has 922 places, 824 transitions, 52201 flow [2021-03-24 13:51:16,187 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=51566, PETRI_DIFFERENCE_MINUEND_PLACES=914, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=824, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=316, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=52201, PETRI_PLACES=922, PETRI_TRANSITIONS=824} [2021-03-24 13:51:16,187 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 884 predicate places. [2021-03-24 13:51:16,187 INFO L480 AbstractCegarLoop]: Abstraction has has 922 places, 824 transitions, 52201 flow [2021-03-24 13:51:16,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:16,187 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:51:16,188 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:51:16,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-03-24 13:51:16,188 INFO L428 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:51:16,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:51:16,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1754247786, now seen corresponding path program 270 times [2021-03-24 13:51:16,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:51:16,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970312548] [2021-03-24 13:51:16,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:51:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:51:16,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:16,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:51:16,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:16,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:51:16,198 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:51:16,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:51:16,208 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:51:16,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:51:16,218 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:51:16,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:51:16,231 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:51:16,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:51:16,249 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:51:16,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:51:16,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:51:16,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970312548] [2021-03-24 13:51:16,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:51:16,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:51:16,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027182569] [2021-03-24 13:51:16,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:51:16,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:51:16,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:51:16,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:51:16,267 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:51:16,267 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 922 places, 824 transitions, 52201 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:16,267 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:51:16,267 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:51:16,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:51:18,051 INFO L129 PetriNetUnfolder]: 287/3642 cut-off events. [2021-03-24 13:51:18,051 INFO L130 PetriNetUnfolder]: For 306180/306222 co-relation queries the response was YES. [2021-03-24 13:51:18,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41707 conditions, 3642 events. 287/3642 cut-off events. For 306180/306222 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 54471 event pairs, 5 based on Foata normal form. 8/3607 useless extension candidates. Maximal degree in co-relation 41488. Up to 562 conditions per place. [2021-03-24 13:51:18,205 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 488 selfloop transitions, 331 changer transitions 0/833 dead transitions. [2021-03-24 13:51:18,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 929 places, 833 transitions, 54219 flow [2021-03-24 13:51:18,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:51:18,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:51:18,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:51:18,206 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:51:18,206 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:51:18,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:51:18,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:51:18,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:51:18,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:18,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:18,207 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:18,207 INFO L185 Difference]: Start difference. First operand has 922 places, 824 transitions, 52201 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:51:18,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 929 places, 833 transitions, 54219 flow [2021-03-24 13:51:20,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 923 places, 833 transitions, 53590 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-24 13:51:20,825 INFO L241 Difference]: Finished difference. Result has 925 places, 825 transitions, 52368 flow [2021-03-24 13:51:20,825 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=51572, PETRI_DIFFERENCE_MINUEND_PLACES=916, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=824, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=52368, PETRI_PLACES=925, PETRI_TRANSITIONS=825} [2021-03-24 13:51:20,825 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 887 predicate places. [2021-03-24 13:51:20,825 INFO L480 AbstractCegarLoop]: Abstraction has has 925 places, 825 transitions, 52368 flow [2021-03-24 13:51:20,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:20,826 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:51:20,826 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:51:20,826 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-03-24 13:51:20,826 INFO L428 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:51:20,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:51:20,826 INFO L82 PathProgramCache]: Analyzing trace with hash 828721958, now seen corresponding path program 271 times [2021-03-24 13:51:20,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:51:20,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131644018] [2021-03-24 13:51:20,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:51:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:51:20,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:20,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:51:20,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:20,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:51:20,835 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:51:20,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:51:20,846 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:51:20,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:51:20,861 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:51:20,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:51:20,881 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:51:20,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:51:20,900 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:51:20,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:51:20,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:51:20,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131644018] [2021-03-24 13:51:20,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:51:20,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:51:20,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081893715] [2021-03-24 13:51:20,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:51:20,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:51:20,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:51:20,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:51:20,919 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:51:20,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 925 places, 825 transitions, 52368 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:20,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:51:20,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:51:20,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:51:22,685 INFO L129 PetriNetUnfolder]: 287/3641 cut-off events. [2021-03-24 13:51:22,685 INFO L130 PetriNetUnfolder]: For 312248/312290 co-relation queries the response was YES. [2021-03-24 13:51:22,740 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42079 conditions, 3641 events. 287/3641 cut-off events. For 312248/312290 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 54428 event pairs, 4 based on Foata normal form. 8/3606 useless extension candidates. Maximal degree in co-relation 41858. Up to 562 conditions per place. [2021-03-24 13:51:22,748 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 477 selfloop transitions, 340 changer transitions 2/833 dead transitions. [2021-03-24 13:51:22,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 932 places, 833 transitions, 54328 flow [2021-03-24 13:51:22,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:51:22,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:51:22,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:51:22,749 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:51:22,749 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:51:22,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:51:22,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:51:22,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:51:22,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:22,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:22,750 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:22,750 INFO L185 Difference]: Start difference. First operand has 925 places, 825 transitions, 52368 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:51:22,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 932 places, 833 transitions, 54328 flow [2021-03-24 13:51:25,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 928 places, 833 transitions, 53704 flow, removed 23 selfloop flow, removed 4 redundant places. [2021-03-24 13:51:25,792 INFO L241 Difference]: Finished difference. Result has 929 places, 823 transitions, 52281 flow [2021-03-24 13:51:25,792 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=51744, PETRI_DIFFERENCE_MINUEND_PLACES=921, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=825, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=340, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=52281, PETRI_PLACES=929, PETRI_TRANSITIONS=823} [2021-03-24 13:51:25,793 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 891 predicate places. [2021-03-24 13:51:25,793 INFO L480 AbstractCegarLoop]: Abstraction has has 929 places, 823 transitions, 52281 flow [2021-03-24 13:51:25,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:25,793 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:51:25,793 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:51:25,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-03-24 13:51:25,793 INFO L428 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:51:25,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:51:25,793 INFO L82 PathProgramCache]: Analyzing trace with hash -296377614, now seen corresponding path program 272 times [2021-03-24 13:51:25,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:51:25,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272384624] [2021-03-24 13:51:25,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:51:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:51:25,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:25,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:51:25,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:25,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:51:25,804 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:51:25,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:51:25,814 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:51:25,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:51:25,830 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:51:25,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:51:25,843 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:51:25,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:51:25,861 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:51:25,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:51:25,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:51:25,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272384624] [2021-03-24 13:51:25,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:51:25,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:51:25,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549148219] [2021-03-24 13:51:25,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:51:25,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:51:25,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:51:25,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:51:25,878 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:51:25,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 929 places, 823 transitions, 52281 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:25,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:51:25,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:51:25,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:51:27,647 INFO L129 PetriNetUnfolder]: 286/3631 cut-off events. [2021-03-24 13:51:27,647 INFO L130 PetriNetUnfolder]: For 316983/317186 co-relation queries the response was YES. [2021-03-24 13:51:27,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42348 conditions, 3631 events. 286/3631 cut-off events. For 316983/317186 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 54270 event pairs, 4 based on Foata normal form. 29/3609 useless extension candidates. Maximal degree in co-relation 42126. Up to 562 conditions per place. [2021-03-24 13:51:27,710 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 477 selfloop transitions, 337 changer transitions 3/831 dead transitions. [2021-03-24 13:51:27,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 934 places, 831 transitions, 54245 flow [2021-03-24 13:51:27,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:51:27,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:51:27,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:51:27,711 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:51:27,711 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:51:27,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:51:27,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:51:27,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:51:27,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:27,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:27,712 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:27,712 INFO L185 Difference]: Start difference. First operand has 929 places, 823 transitions, 52281 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:51:27,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 934 places, 831 transitions, 54245 flow [2021-03-24 13:51:30,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 930 places, 831 transitions, 53651 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-24 13:51:30,724 INFO L241 Difference]: Finished difference. Result has 931 places, 820 transitions, 52136 flow [2021-03-24 13:51:30,724 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=51695, PETRI_DIFFERENCE_MINUEND_PLACES=923, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=823, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=52136, PETRI_PLACES=931, PETRI_TRANSITIONS=820} [2021-03-24 13:51:30,724 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 893 predicate places. [2021-03-24 13:51:30,724 INFO L480 AbstractCegarLoop]: Abstraction has has 931 places, 820 transitions, 52136 flow [2021-03-24 13:51:30,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:30,725 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:51:30,725 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:51:30,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-03-24 13:51:30,725 INFO L428 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:51:30,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:51:30,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1796017012, now seen corresponding path program 273 times [2021-03-24 13:51:30,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:51:30,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378258351] [2021-03-24 13:51:30,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:51:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:51:30,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:30,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:51:30,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:30,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:51:30,734 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:51:30,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:51:30,745 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:51:30,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:51:30,755 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:51:30,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:51:30,768 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:51:30,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:51:30,785 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:51:30,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:51:30,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:51:30,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378258351] [2021-03-24 13:51:30,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:51:30,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:51:30,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619035149] [2021-03-24 13:51:30,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:51:30,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:51:30,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:51:30,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:51:30,802 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:51:30,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 931 places, 820 transitions, 52136 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:30,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:51:30,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:51:30,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:51:32,575 INFO L129 PetriNetUnfolder]: 285/3615 cut-off events. [2021-03-24 13:51:32,576 INFO L130 PetriNetUnfolder]: For 315358/315561 co-relation queries the response was YES. [2021-03-24 13:51:32,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42187 conditions, 3615 events. 285/3615 cut-off events. For 315358/315561 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 53875 event pairs, 4 based on Foata normal form. 35/3601 useless extension candidates. Maximal degree in co-relation 41965. Up to 562 conditions per place. [2021-03-24 13:51:32,638 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 484 selfloop transitions, 318 changer transitions 12/828 dead transitions. [2021-03-24 13:51:32,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 934 places, 828 transitions, 54094 flow [2021-03-24 13:51:32,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:51:32,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:51:32,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:51:32,639 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:51:32,639 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:51:32,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:51:32,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:51:32,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:51:32,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:32,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:32,640 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:32,640 INFO L185 Difference]: Start difference. First operand has 931 places, 820 transitions, 52136 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:51:32,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 934 places, 828 transitions, 54094 flow [2021-03-24 13:51:35,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 928 places, 828 transitions, 53415 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-03-24 13:51:35,724 INFO L241 Difference]: Finished difference. Result has 929 places, 808 transitions, 51066 flow [2021-03-24 13:51:35,724 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=51473, PETRI_DIFFERENCE_MINUEND_PLACES=921, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=820, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=318, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=51066, PETRI_PLACES=929, PETRI_TRANSITIONS=808} [2021-03-24 13:51:35,724 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 891 predicate places. [2021-03-24 13:51:35,725 INFO L480 AbstractCegarLoop]: Abstraction has has 929 places, 808 transitions, 51066 flow [2021-03-24 13:51:35,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:35,725 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:51:35,725 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:51:35,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-03-24 13:51:35,725 INFO L428 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:51:35,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:51:35,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1651734702, now seen corresponding path program 274 times [2021-03-24 13:51:35,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:51:35,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024077124] [2021-03-24 13:51:35,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:51:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:51:35,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:35,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:51:35,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:35,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:51:35,741 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:51:35,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:51:35,751 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:51:35,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:51:35,767 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:51:35,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:51:35,788 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:51:35,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:51:35,806 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:51:35,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:51:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:51:35,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024077124] [2021-03-24 13:51:35,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:51:35,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:51:35,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314088597] [2021-03-24 13:51:35,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:51:35,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:51:35,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:51:35,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:51:35,824 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:51:35,824 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 929 places, 808 transitions, 51066 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:35,824 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:51:35,824 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:51:35,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:51:37,458 INFO L129 PetriNetUnfolder]: 284/3577 cut-off events. [2021-03-24 13:51:37,458 INFO L130 PetriNetUnfolder]: For 303226/303336 co-relation queries the response was YES. [2021-03-24 13:51:37,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41066 conditions, 3577 events. 284/3577 cut-off events. For 303226/303336 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 53214 event pairs, 4 based on Foata normal form. 24/3558 useless extension candidates. Maximal degree in co-relation 40845. Up to 562 conditions per place. [2021-03-24 13:51:37,518 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 470 selfloop transitions, 330 changer transitions 2/816 dead transitions. [2021-03-24 13:51:37,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 924 places, 816 transitions, 52992 flow [2021-03-24 13:51:37,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:51:37,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:51:37,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:51:37,519 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:51:37,520 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:51:37,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:51:37,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:51:37,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:51:37,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:37,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:37,520 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:37,520 INFO L185 Difference]: Start difference. First operand has 929 places, 808 transitions, 51066 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:51:37,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 924 places, 816 transitions, 52992 flow [2021-03-24 13:51:40,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 914 places, 816 transitions, 52248 flow, removed 87 selfloop flow, removed 10 redundant places. [2021-03-24 13:51:40,222 INFO L241 Difference]: Finished difference. Result has 915 places, 806 transitions, 50880 flow [2021-03-24 13:51:40,222 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=50376, PETRI_DIFFERENCE_MINUEND_PLACES=907, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=808, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=50880, PETRI_PLACES=915, PETRI_TRANSITIONS=806} [2021-03-24 13:51:40,222 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 877 predicate places. [2021-03-24 13:51:40,222 INFO L480 AbstractCegarLoop]: Abstraction has has 915 places, 806 transitions, 50880 flow [2021-03-24 13:51:40,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:40,222 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:51:40,222 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:51:40,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-03-24 13:51:40,222 INFO L428 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:51:40,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:51:40,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1080715892, now seen corresponding path program 275 times [2021-03-24 13:51:40,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:51:40,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643699451] [2021-03-24 13:51:40,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:51:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:51:40,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:40,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:51:40,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:40,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:51:40,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:40,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:51:40,238 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:51:40,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:51:40,248 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:51:40,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:51:40,261 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:51:40,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:51:40,279 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:51:40,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:51:40,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:51:40,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643699451] [2021-03-24 13:51:40,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:51:40,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:51:40,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497353362] [2021-03-24 13:51:40,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:51:40,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:51:40,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:51:40,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:51:40,297 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:51:40,297 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 915 places, 806 transitions, 50880 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:40,297 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:51:40,297 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:51:40,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:51:42,007 INFO L129 PetriNetUnfolder]: 283/3567 cut-off events. [2021-03-24 13:51:42,007 INFO L130 PetriNetUnfolder]: For 280935/280977 co-relation queries the response was YES. [2021-03-24 13:51:42,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39220 conditions, 3567 events. 283/3567 cut-off events. For 280935/280977 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 53019 event pairs, 4 based on Foata normal form. 8/3536 useless extension candidates. Maximal degree in co-relation 39005. Up to 563 conditions per place. [2021-03-24 13:51:42,063 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 486 selfloop transitions, 314 changer transitions 0/814 dead transitions. [2021-03-24 13:51:42,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 920 places, 814 transitions, 52756 flow [2021-03-24 13:51:42,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:51:42,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:51:42,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:51:42,064 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:51:42,064 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:51:42,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:51:42,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:51:42,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:51:42,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:42,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:42,064 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:42,064 INFO L185 Difference]: Start difference. First operand has 915 places, 806 transitions, 50880 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:51:42,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 920 places, 814 transitions, 52756 flow [2021-03-24 13:51:44,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 914 places, 814 transitions, 52118 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-03-24 13:51:44,605 INFO L241 Difference]: Finished difference. Result has 915 places, 806 transitions, 50881 flow [2021-03-24 13:51:44,606 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=50250, PETRI_DIFFERENCE_MINUEND_PLACES=907, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=314, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=50881, PETRI_PLACES=915, PETRI_TRANSITIONS=806} [2021-03-24 13:51:44,606 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 877 predicate places. [2021-03-24 13:51:44,606 INFO L480 AbstractCegarLoop]: Abstraction has has 915 places, 806 transitions, 50881 flow [2021-03-24 13:51:44,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:44,606 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:51:44,606 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:51:44,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-03-24 13:51:44,606 INFO L428 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:51:44,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:51:44,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1153827598, now seen corresponding path program 276 times [2021-03-24 13:51:44,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:51:44,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193068438] [2021-03-24 13:51:44,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:51:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:51:44,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:44,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:51:44,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:44,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:51:44,616 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:51:44,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:51:44,627 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:51:44,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:51:44,643 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:51:44,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:51:44,665 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:51:44,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:51:44,683 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:51:44,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:51:44,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:51:44,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193068438] [2021-03-24 13:51:44,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:51:44,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:51:44,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18968665] [2021-03-24 13:51:44,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:51:44,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:51:44,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:51:44,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:51:44,700 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:51:44,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 915 places, 806 transitions, 50881 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:44,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:51:44,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:51:44,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:51:46,424 INFO L129 PetriNetUnfolder]: 283/3566 cut-off events. [2021-03-24 13:51:46,424 INFO L130 PetriNetUnfolder]: For 280998/281107 co-relation queries the response was YES. [2021-03-24 13:51:46,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39252 conditions, 3566 events. 283/3566 cut-off events. For 280998/281107 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 53010 event pairs, 4 based on Foata normal form. 24/3547 useless extension candidates. Maximal degree in co-relation 39038. Up to 562 conditions per place. [2021-03-24 13:51:46,484 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 468 selfloop transitions, 329 changer transitions 3/814 dead transitions. [2021-03-24 13:51:46,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 922 places, 814 transitions, 52757 flow [2021-03-24 13:51:46,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:51:46,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:51:46,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:51:46,485 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:51:46,485 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:51:46,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:51:46,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:51:46,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:51:46,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:46,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:46,486 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:46,486 INFO L185 Difference]: Start difference. First operand has 915 places, 806 transitions, 50881 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:51:46,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 922 places, 814 transitions, 52757 flow [2021-03-24 13:51:49,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 917 places, 814 transitions, 52452 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-24 13:51:49,054 INFO L241 Difference]: Finished difference. Result has 918 places, 803 transitions, 51038 flow [2021-03-24 13:51:49,054 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=50576, PETRI_DIFFERENCE_MINUEND_PLACES=910, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=51038, PETRI_PLACES=918, PETRI_TRANSITIONS=803} [2021-03-24 13:51:49,055 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 880 predicate places. [2021-03-24 13:51:49,055 INFO L480 AbstractCegarLoop]: Abstraction has has 918 places, 803 transitions, 51038 flow [2021-03-24 13:51:49,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:49,055 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:51:49,055 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:51:49,055 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-03-24 13:51:49,055 INFO L428 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:51:49,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:51:49,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1325097352, now seen corresponding path program 277 times [2021-03-24 13:51:49,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:51:49,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92351712] [2021-03-24 13:51:49,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:51:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:51:49,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:49,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:51:49,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:49,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:51:49,065 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:51:49,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:51:49,075 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:51:49,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:51:49,090 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:51:49,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:51:49,111 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:51:49,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:51:49,128 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:51:49,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:51:49,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:51:49,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92351712] [2021-03-24 13:51:49,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:51:49,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:51:49,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011654172] [2021-03-24 13:51:49,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:51:49,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:51:49,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:51:49,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:51:49,146 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:51:49,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 918 places, 803 transitions, 51038 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:49,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:51:49,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:51:49,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:51:50,836 INFO L129 PetriNetUnfolder]: 282/3553 cut-off events. [2021-03-24 13:51:50,836 INFO L130 PetriNetUnfolder]: For 285925/286028 co-relation queries the response was YES. [2021-03-24 13:51:50,887 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39629 conditions, 3553 events. 282/3553 cut-off events. For 285925/286028 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 52769 event pairs, 4 based on Foata normal form. 22/3532 useless extension candidates. Maximal degree in co-relation 39414. Up to 562 conditions per place. [2021-03-24 13:51:50,895 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 461 selfloop transitions, 334 changer transitions 2/811 dead transitions. [2021-03-24 13:51:50,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 923 places, 811 transitions, 52916 flow [2021-03-24 13:51:50,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:51:50,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:51:50,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:51:50,896 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:51:50,896 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:51:50,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:51:50,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:51:50,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:51:50,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:50,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:50,897 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:50,897 INFO L185 Difference]: Start difference. First operand has 918 places, 803 transitions, 51038 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:51:50,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 923 places, 811 transitions, 52916 flow [2021-03-24 13:51:53,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 918 places, 811 transitions, 52315 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 13:51:53,612 INFO L241 Difference]: Finished difference. Result has 920 places, 803 transitions, 51267 flow [2021-03-24 13:51:53,612 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=50445, PETRI_DIFFERENCE_MINUEND_PLACES=911, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=803, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=332, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=51267, PETRI_PLACES=920, PETRI_TRANSITIONS=803} [2021-03-24 13:51:53,612 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 882 predicate places. [2021-03-24 13:51:53,612 INFO L480 AbstractCegarLoop]: Abstraction has has 920 places, 803 transitions, 51267 flow [2021-03-24 13:51:53,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:53,612 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:51:53,612 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:51:53,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-03-24 13:51:53,613 INFO L428 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:51:53,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:51:53,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1439228742, now seen corresponding path program 278 times [2021-03-24 13:51:53,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:51:53,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429453448] [2021-03-24 13:51:53,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:51:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:51:53,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:53,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:51:53,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:53,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:51:53,622 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:51:53,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:51:53,633 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:51:53,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:51:53,648 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:51:53,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:51:53,661 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:51:53,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:51:53,679 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:51:53,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:51:53,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:51:53,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429453448] [2021-03-24 13:51:53,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:51:53,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:51:53,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571135575] [2021-03-24 13:51:53,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:51:53,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:51:53,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:51:53,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:51:53,696 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:51:53,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 920 places, 803 transitions, 51267 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:53,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:51:53,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:51:53,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:51:55,410 INFO L129 PetriNetUnfolder]: 281/3543 cut-off events. [2021-03-24 13:51:55,411 INFO L130 PetriNetUnfolder]: For 289115/289245 co-relation queries the response was YES. [2021-03-24 13:51:55,463 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39672 conditions, 3543 events. 281/3543 cut-off events. For 289115/289245 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 52586 event pairs, 4 based on Foata normal form. 28/3528 useless extension candidates. Maximal degree in co-relation 39456. Up to 562 conditions per place. [2021-03-24 13:51:55,471 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 461 selfloop transitions, 334 changer transitions 0/809 dead transitions. [2021-03-24 13:51:55,471 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 925 places, 809 transitions, 53022 flow [2021-03-24 13:51:55,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:51:55,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:51:55,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:51:55,472 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:51:55,472 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:51:55,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:51:55,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:51:55,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:51:55,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:55,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:55,473 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:55,473 INFO L185 Difference]: Start difference. First operand has 920 places, 803 transitions, 51267 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:51:55,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 925 places, 809 transitions, 53022 flow [2021-03-24 13:51:58,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 922 places, 809 transitions, 52540 flow, removed 44 selfloop flow, removed 3 redundant places. [2021-03-24 13:51:58,149 INFO L241 Difference]: Finished difference. Result has 923 places, 803 transitions, 51464 flow [2021-03-24 13:51:58,149 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=50793, PETRI_DIFFERENCE_MINUEND_PLACES=915, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=803, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=334, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=51464, PETRI_PLACES=923, PETRI_TRANSITIONS=803} [2021-03-24 13:51:58,149 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 885 predicate places. [2021-03-24 13:51:58,149 INFO L480 AbstractCegarLoop]: Abstraction has has 923 places, 803 transitions, 51464 flow [2021-03-24 13:51:58,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:58,149 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:51:58,149 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:51:58,149 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-03-24 13:51:58,149 INFO L428 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:51:58,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:51:58,150 INFO L82 PathProgramCache]: Analyzing trace with hash 863462154, now seen corresponding path program 279 times [2021-03-24 13:51:58,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:51:58,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615897361] [2021-03-24 13:51:58,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:51:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:51:58,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:58,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:51:58,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:58,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:51:58,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:58,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:51:58,166 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:51:58,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:51:58,176 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:51:58,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:51:58,189 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:51:58,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:51:58,207 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:51:58,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:51:58,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:51:58,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615897361] [2021-03-24 13:51:58,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:51:58,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:51:58,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414788082] [2021-03-24 13:51:58,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:51:58,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:51:58,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:51:58,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:51:58,225 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:51:58,225 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 923 places, 803 transitions, 51464 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:58,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:51:58,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:51:58,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:51:59,874 INFO L129 PetriNetUnfolder]: 281/3542 cut-off events. [2021-03-24 13:51:59,874 INFO L130 PetriNetUnfolder]: For 287878/287927 co-relation queries the response was YES. [2021-03-24 13:51:59,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39827 conditions, 3542 events. 281/3542 cut-off events. For 287878/287927 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 52583 event pairs, 4 based on Foata normal form. 11/3514 useless extension candidates. Maximal degree in co-relation 39611. Up to 560 conditions per place. [2021-03-24 13:51:59,934 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 479 selfloop transitions, 316 changer transitions 0/809 dead transitions. [2021-03-24 13:51:59,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 930 places, 809 transitions, 53219 flow [2021-03-24 13:51:59,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:51:59,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:51:59,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:51:59,935 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:51:59,935 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:51:59,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:51:59,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:51:59,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:51:59,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:59,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:59,936 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:59,936 INFO L185 Difference]: Start difference. First operand has 923 places, 803 transitions, 51464 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:51:59,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 930 places, 809 transitions, 53219 flow [2021-03-24 13:52:02,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 925 places, 809 transitions, 52570 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-24 13:52:02,752 INFO L241 Difference]: Finished difference. Result has 926 places, 803 transitions, 51450 flow [2021-03-24 13:52:02,752 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=50815, PETRI_DIFFERENCE_MINUEND_PLACES=918, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=803, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=316, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=51450, PETRI_PLACES=926, PETRI_TRANSITIONS=803} [2021-03-24 13:52:02,752 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 888 predicate places. [2021-03-24 13:52:02,753 INFO L480 AbstractCegarLoop]: Abstraction has has 926 places, 803 transitions, 51450 flow [2021-03-24 13:52:02,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:02,753 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:52:02,753 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:52:02,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-03-24 13:52:02,753 INFO L428 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:52:02,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:52:02,753 INFO L82 PathProgramCache]: Analyzing trace with hash -51653006, now seen corresponding path program 280 times [2021-03-24 13:52:02,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:52:02,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743864858] [2021-03-24 13:52:02,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:52:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:52:02,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:02,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:52:02,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:02,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:52:02,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:02,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:52:02,769 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:52:02,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:52:02,780 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:52:02,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:52:02,794 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:52:02,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:52:02,812 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:52:02,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:52:02,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:52:02,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743864858] [2021-03-24 13:52:02,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:52:02,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:52:02,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702609649] [2021-03-24 13:52:02,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:52:02,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:52:02,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:52:02,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:52:02,830 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:52:02,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 926 places, 803 transitions, 51450 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:02,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:52:02,830 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:52:02,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:52:04,632 INFO L129 PetriNetUnfolder]: 281/3541 cut-off events. [2021-03-24 13:52:04,632 INFO L130 PetriNetUnfolder]: For 291723/291852 co-relation queries the response was YES. [2021-03-24 13:52:04,682 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40181 conditions, 3541 events. 281/3541 cut-off events. For 291723/291852 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 52587 event pairs, 4 based on Foata normal form. 34/3533 useless extension candidates. Maximal degree in co-relation 39964. Up to 560 conditions per place. [2021-03-24 13:52:04,690 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 475 selfloop transitions, 308 changer transitions 12/809 dead transitions. [2021-03-24 13:52:04,690 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 933 places, 809 transitions, 53213 flow [2021-03-24 13:52:04,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:52:04,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:52:04,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:52:04,691 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:52:04,691 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:52:04,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:52:04,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:52:04,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:52:04,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:04,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:04,692 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:04,692 INFO L185 Difference]: Start difference. First operand has 926 places, 803 transitions, 51450 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:52:04,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 933 places, 809 transitions, 53213 flow [2021-03-24 13:52:07,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 928 places, 809 transitions, 52494 flow, removed 21 selfloop flow, removed 5 redundant places. [2021-03-24 13:52:07,316 INFO L241 Difference]: Finished difference. Result has 929 places, 791 transitions, 50224 flow [2021-03-24 13:52:07,316 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=50731, PETRI_DIFFERENCE_MINUEND_PLACES=921, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=803, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=50224, PETRI_PLACES=929, PETRI_TRANSITIONS=791} [2021-03-24 13:52:07,316 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 891 predicate places. [2021-03-24 13:52:07,316 INFO L480 AbstractCegarLoop]: Abstraction has has 929 places, 791 transitions, 50224 flow [2021-03-24 13:52:07,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:07,316 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:52:07,316 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:52:07,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-03-24 13:52:07,317 INFO L428 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:52:07,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:52:07,317 INFO L82 PathProgramCache]: Analyzing trace with hash -613711112, now seen corresponding path program 281 times [2021-03-24 13:52:07,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:52:07,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41081384] [2021-03-24 13:52:07,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:52:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:52:07,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:07,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:52:07,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:07,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:52:07,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:07,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:52:07,333 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:52:07,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:52:07,350 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:52:07,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:52:07,364 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:52:07,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:52:07,382 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:52:07,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:52:07,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:52:07,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41081384] [2021-03-24 13:52:07,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:52:07,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:52:07,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374009258] [2021-03-24 13:52:07,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:52:07,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:52:07,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:52:07,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:52:07,400 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:52:07,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 929 places, 791 transitions, 50224 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:07,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:52:07,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:52:07,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:52:09,056 INFO L129 PetriNetUnfolder]: 280/3503 cut-off events. [2021-03-24 13:52:09,056 INFO L130 PetriNetUnfolder]: For 286150/286231 co-relation queries the response was YES. [2021-03-24 13:52:09,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39613 conditions, 3503 events. 280/3503 cut-off events. For 286150/286231 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 51822 event pairs, 4 based on Foata normal form. 23/3490 useless extension candidates. Maximal degree in co-relation 39395. Up to 560 conditions per place. [2021-03-24 13:52:09,116 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 485 selfloop transitions, 298 changer transitions 0/797 dead transitions. [2021-03-24 13:52:09,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 913 places, 797 transitions, 51971 flow [2021-03-24 13:52:09,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:52:09,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:52:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:52:09,117 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:52:09,117 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:52:09,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:52:09,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:52:09,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:52:09,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:09,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:09,118 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:09,118 INFO L185 Difference]: Start difference. First operand has 929 places, 791 transitions, 50224 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:52:09,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 913 places, 797 transitions, 51971 flow [2021-03-24 13:52:11,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 893 places, 797 transitions, 50854 flow, removed 133 selfloop flow, removed 20 redundant places. [2021-03-24 13:52:11,740 INFO L241 Difference]: Finished difference. Result has 894 places, 791 transitions, 49758 flow [2021-03-24 13:52:11,740 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=49159, PETRI_DIFFERENCE_MINUEND_PLACES=886, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=298, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=49758, PETRI_PLACES=894, PETRI_TRANSITIONS=791} [2021-03-24 13:52:11,741 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 856 predicate places. [2021-03-24 13:52:11,741 INFO L480 AbstractCegarLoop]: Abstraction has has 894 places, 791 transitions, 49758 flow [2021-03-24 13:52:11,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:11,741 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:52:11,741 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:52:11,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-03-24 13:52:11,741 INFO L428 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:52:11,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:52:11,741 INFO L82 PathProgramCache]: Analyzing trace with hash 331091182, now seen corresponding path program 282 times [2021-03-24 13:52:11,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:52:11,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121619971] [2021-03-24 13:52:11,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:52:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:52:11,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:11,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:52:11,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:11,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:52:11,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:11,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:52:11,762 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:52:11,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:52:11,780 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-24 13:52:11,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 13:52:11,803 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:52:11,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:52:11,821 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:52:11,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:52:11,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:52:11,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121619971] [2021-03-24 13:52:11,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:52:11,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:52:11,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853522541] [2021-03-24 13:52:11,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:52:11,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:52:11,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:52:11,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:52:11,840 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:52:11,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 894 places, 791 transitions, 49758 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:11,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:52:11,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:52:11,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:52:13,465 INFO L129 PetriNetUnfolder]: 280/3502 cut-off events. [2021-03-24 13:52:13,465 INFO L130 PetriNetUnfolder]: For 263737/263899 co-relation queries the response was YES. [2021-03-24 13:52:13,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37660 conditions, 3502 events. 280/3502 cut-off events. For 263737/263899 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 51808 event pairs, 4 based on Foata normal form. 21/3483 useless extension candidates. Maximal degree in co-relation 37456. Up to 560 conditions per place. [2021-03-24 13:52:13,521 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 493 selfloop transitions, 287 changer transitions 3/797 dead transitions. [2021-03-24 13:52:13,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 901 places, 797 transitions, 51461 flow [2021-03-24 13:52:13,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:52:13,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:52:13,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:52:13,522 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:52:13,522 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:52:13,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:52:13,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:52:13,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:52:13,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:13,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:13,523 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:13,523 INFO L185 Difference]: Start difference. First operand has 894 places, 791 transitions, 49758 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:52:13,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 901 places, 797 transitions, 51461 flow [2021-03-24 13:52:16,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 896 places, 797 transitions, 50955 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-24 13:52:16,162 INFO L241 Difference]: Finished difference. Result has 897 places, 788 transitions, 49634 flow [2021-03-24 13:52:16,162 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=49252, PETRI_DIFFERENCE_MINUEND_PLACES=889, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=49634, PETRI_PLACES=897, PETRI_TRANSITIONS=788} [2021-03-24 13:52:16,162 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 859 predicate places. [2021-03-24 13:52:16,162 INFO L480 AbstractCegarLoop]: Abstraction has has 897 places, 788 transitions, 49634 flow [2021-03-24 13:52:16,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:16,162 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:52:16,162 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:52:16,163 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-03-24 13:52:16,163 INFO L428 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:52:16,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:52:16,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1731551652, now seen corresponding path program 283 times [2021-03-24 13:52:16,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:52:16,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917229728] [2021-03-24 13:52:16,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:52:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:52:16,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:16,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:52:16,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:16,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:52:16,172 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:52:16,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:52:16,183 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:52:16,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:52:16,199 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:52:16,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:52:16,220 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:52:16,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:52:16,238 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:52:16,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:52:16,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:52:16,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917229728] [2021-03-24 13:52:16,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:52:16,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:52:16,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637813433] [2021-03-24 13:52:16,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:52:16,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:52:16,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:52:16,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:52:16,256 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:52:16,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 897 places, 788 transitions, 49634 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:16,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:52:16,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:52:16,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:52:17,823 INFO L129 PetriNetUnfolder]: 279/3491 cut-off events. [2021-03-24 13:52:17,824 INFO L130 PetriNetUnfolder]: For 265070/265195 co-relation queries the response was YES. [2021-03-24 13:52:17,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37935 conditions, 3491 events. 279/3491 cut-off events. For 265070/265195 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 51640 event pairs, 4 based on Foata normal form. 9/3461 useless extension candidates. Maximal degree in co-relation 37731. Up to 560 conditions per place. [2021-03-24 13:52:17,879 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 454 selfloop transitions, 324 changer transitions 2/794 dead transitions. [2021-03-24 13:52:17,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 902 places, 794 transitions, 51339 flow [2021-03-24 13:52:17,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:52:17,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:52:17,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:52:17,880 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:52:17,880 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:52:17,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:52:17,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:52:17,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:52:17,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:17,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:17,881 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:17,881 INFO L185 Difference]: Start difference. First operand has 897 places, 788 transitions, 49634 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:52:17,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 902 places, 794 transitions, 51339 flow [2021-03-24 13:52:20,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 896 places, 794 transitions, 50742 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-03-24 13:52:20,338 INFO L241 Difference]: Finished difference. Result has 897 places, 786 transitions, 49538 flow [2021-03-24 13:52:20,339 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=49045, PETRI_DIFFERENCE_MINUEND_PLACES=889, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=324, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=49538, PETRI_PLACES=897, PETRI_TRANSITIONS=786} [2021-03-24 13:52:20,339 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 859 predicate places. [2021-03-24 13:52:20,339 INFO L480 AbstractCegarLoop]: Abstraction has has 897 places, 786 transitions, 49538 flow [2021-03-24 13:52:20,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:20,339 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:52:20,339 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:52:20,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-03-24 13:52:20,339 INFO L428 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:52:20,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:52:20,339 INFO L82 PathProgramCache]: Analyzing trace with hash -981189650, now seen corresponding path program 284 times [2021-03-24 13:52:20,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:52:20,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44321440] [2021-03-24 13:52:20,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:52:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:52:20,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:20,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:52:20,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:20,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:52:20,349 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:52:20,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:52:20,361 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:52:20,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:52:20,375 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:52:20,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:52:20,395 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:52:20,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:52:20,413 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:52:20,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:52:20,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:52:20,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44321440] [2021-03-24 13:52:20,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:52:20,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:52:20,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003028088] [2021-03-24 13:52:20,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:52:20,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:52:20,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:52:20,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:52:20,430 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:52:20,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 897 places, 786 transitions, 49538 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:20,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:52:20,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:52:20,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:52:22,074 INFO L129 PetriNetUnfolder]: 278/3481 cut-off events. [2021-03-24 13:52:22,074 INFO L130 PetriNetUnfolder]: For 265091/265253 co-relation queries the response was YES. [2021-03-24 13:52:22,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37830 conditions, 3481 events. 278/3481 cut-off events. For 265091/265253 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 51476 event pairs, 4 based on Foata normal form. 15/3457 useless extension candidates. Maximal degree in co-relation 37626. Up to 624 conditions per place. [2021-03-24 13:52:22,125 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 490 selfloop transitions, 316 changer transitions 2/822 dead transitions. [2021-03-24 13:52:22,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 902 places, 822 transitions, 52859 flow [2021-03-24 13:52:22,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:52:22,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:52:22,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:52:22,126 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:52:22,126 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:52:22,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:52:22,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:52:22,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:52:22,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:22,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:22,127 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:22,127 INFO L185 Difference]: Start difference. First operand has 897 places, 786 transitions, 49538 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:52:22,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 902 places, 822 transitions, 52859 flow [2021-03-24 13:52:24,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 897 places, 822 transitions, 52223 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-24 13:52:24,375 INFO L241 Difference]: Finished difference. Result has 901 places, 801 transitions, 50680 flow [2021-03-24 13:52:24,375 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=48935, PETRI_DIFFERENCE_MINUEND_PLACES=890, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=786, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=50680, PETRI_PLACES=901, PETRI_TRANSITIONS=801} [2021-03-24 13:52:24,375 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 863 predicate places. [2021-03-24 13:52:24,376 INFO L480 AbstractCegarLoop]: Abstraction has has 901 places, 801 transitions, 50680 flow [2021-03-24 13:52:24,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:24,376 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:52:24,376 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:52:24,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-03-24 13:52:24,376 INFO L428 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:52:24,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:52:24,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1865015546, now seen corresponding path program 285 times [2021-03-24 13:52:24,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:52:24,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77064964] [2021-03-24 13:52:24,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:52:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:52:24,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:24,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:52:24,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:24,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:52:24,396 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:52:24,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:52:24,406 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:52:24,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:52:24,420 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:52:24,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:52:24,440 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:52:24,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:52:24,457 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:52:24,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:52:24,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:52:24,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77064964] [2021-03-24 13:52:24,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:52:24,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:52:24,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105270473] [2021-03-24 13:52:24,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:52:24,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:52:24,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:52:24,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:52:24,475 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:52:24,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 901 places, 801 transitions, 50680 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:24,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:52:24,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:52:24,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:52:26,122 INFO L129 PetriNetUnfolder]: 277/3471 cut-off events. [2021-03-24 13:52:26,123 INFO L130 PetriNetUnfolder]: For 270114/270276 co-relation queries the response was YES. [2021-03-24 13:52:26,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37902 conditions, 3471 events. 277/3471 cut-off events. For 270114/270276 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 51295 event pairs, 4 based on Foata normal form. 21/3452 useless extension candidates. Maximal degree in co-relation 37695. Up to 560 conditions per place. [2021-03-24 13:52:26,180 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 452 selfloop transitions, 338 changer transitions 3/807 dead transitions. [2021-03-24 13:52:26,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 907 places, 807 transitions, 52411 flow [2021-03-24 13:52:26,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:52:26,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:52:26,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:52:26,181 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:52:26,181 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:52:26,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:52:26,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:52:26,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:52:26,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:26,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:26,182 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:26,182 INFO L185 Difference]: Start difference. First operand has 901 places, 801 transitions, 50680 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:52:26,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 907 places, 807 transitions, 52411 flow [2021-03-24 13:52:28,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 902 places, 807 transitions, 51765 flow, removed 36 selfloop flow, removed 5 redundant places. [2021-03-24 13:52:28,628 INFO L241 Difference]: Finished difference. Result has 903 places, 798 transitions, 50505 flow [2021-03-24 13:52:28,628 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=50042, PETRI_DIFFERENCE_MINUEND_PLACES=895, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=801, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=338, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=50505, PETRI_PLACES=903, PETRI_TRANSITIONS=798} [2021-03-24 13:52:28,628 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 865 predicate places. [2021-03-24 13:52:28,628 INFO L480 AbstractCegarLoop]: Abstraction has has 903 places, 798 transitions, 50505 flow [2021-03-24 13:52:28,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:28,629 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:52:28,629 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:52:28,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-03-24 13:52:28,629 INFO L428 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:52:28,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:52:28,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1646165054, now seen corresponding path program 286 times [2021-03-24 13:52:28,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:52:28,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217141157] [2021-03-24 13:52:28,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:52:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:52:28,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:28,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:52:28,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:28,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:52:28,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:28,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:52:28,646 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:52:28,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:52:28,662 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:52:28,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:52:28,682 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:52:28,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:52:28,699 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:52:28,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:52:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:52:28,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217141157] [2021-03-24 13:52:28,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:52:28,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:52:28,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435749855] [2021-03-24 13:52:28,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:52:28,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:52:28,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:52:28,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:52:28,716 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:52:28,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 903 places, 798 transitions, 50505 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:28,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:52:28,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:52:28,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:52:30,302 INFO L129 PetriNetUnfolder]: 276/3460 cut-off events. [2021-03-24 13:52:30,302 INFO L130 PetriNetUnfolder]: For 267535/267697 co-relation queries the response was YES. [2021-03-24 13:52:30,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37811 conditions, 3460 events. 276/3460 cut-off events. For 267535/267697 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 51113 event pairs, 4 based on Foata normal form. 21/3441 useless extension candidates. Maximal degree in co-relation 37605. Up to 558 conditions per place. [2021-03-24 13:52:30,358 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 504 selfloop transitions, 284 changer transitions 2/804 dead transitions. [2021-03-24 13:52:30,358 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 908 places, 804 transitions, 52230 flow [2021-03-24 13:52:30,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:52:30,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:52:30,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:52:30,359 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:52:30,359 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:52:30,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:52:30,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:52:30,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:52:30,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:30,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:30,360 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:30,360 INFO L185 Difference]: Start difference. First operand has 903 places, 798 transitions, 50505 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:52:30,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 908 places, 804 transitions, 52230 flow [2021-03-24 13:52:32,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 901 places, 804 transitions, 51670 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-24 13:52:32,827 INFO L241 Difference]: Finished difference. Result has 902 places, 796 transitions, 50382 flow [2021-03-24 13:52:32,827 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=49953, PETRI_DIFFERENCE_MINUEND_PLACES=894, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=798, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=284, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=50382, PETRI_PLACES=902, PETRI_TRANSITIONS=796} [2021-03-24 13:52:32,828 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 864 predicate places. [2021-03-24 13:52:32,828 INFO L480 AbstractCegarLoop]: Abstraction has has 902 places, 796 transitions, 50382 flow [2021-03-24 13:52:32,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:32,828 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:52:32,828 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:52:32,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-03-24 13:52:32,828 INFO L428 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:52:32,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:52:32,828 INFO L82 PathProgramCache]: Analyzing trace with hash -694526244, now seen corresponding path program 287 times [2021-03-24 13:52:32,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:52:32,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563135127] [2021-03-24 13:52:32,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:52:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:52:32,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:32,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:52:32,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:32,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:52:32,838 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:52:32,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:52:32,849 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:52:32,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:52:32,864 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:52:32,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:52:32,877 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:52:32,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:52:32,895 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:52:32,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:52:32,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:52:32,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563135127] [2021-03-24 13:52:32,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:52:32,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:52:32,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195697198] [2021-03-24 13:52:32,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:52:32,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:52:32,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:52:32,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:52:32,912 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:52:32,913 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 902 places, 796 transitions, 50382 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:32,913 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:52:32,913 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:52:32,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:52:34,493 INFO L129 PetriNetUnfolder]: 275/3450 cut-off events. [2021-03-24 13:52:34,493 INFO L130 PetriNetUnfolder]: For 266594/266756 co-relation queries the response was YES. [2021-03-24 13:52:34,541 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37775 conditions, 3450 events. 275/3450 cut-off events. For 266594/266756 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 50935 event pairs, 4 based on Foata normal form. 21/3431 useless extension candidates. Maximal degree in co-relation 37570. Up to 559 conditions per place. [2021-03-24 13:52:34,548 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 446 selfloop transitions, 337 changer transitions 5/802 dead transitions. [2021-03-24 13:52:34,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 907 places, 802 transitions, 52103 flow [2021-03-24 13:52:34,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:52:34,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:52:34,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:52:34,549 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:52:34,549 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:52:34,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:52:34,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:52:34,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:52:34,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:34,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:34,550 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:34,550 INFO L185 Difference]: Start difference. First operand has 902 places, 796 transitions, 50382 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:52:34,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 907 places, 802 transitions, 52103 flow [2021-03-24 13:52:36,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 903 places, 802 transitions, 51702 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-03-24 13:52:36,924 INFO L241 Difference]: Finished difference. Result has 904 places, 791 transitions, 50259 flow [2021-03-24 13:52:36,924 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=49989, PETRI_DIFFERENCE_MINUEND_PLACES=896, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=796, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=50259, PETRI_PLACES=904, PETRI_TRANSITIONS=791} [2021-03-24 13:52:36,924 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 866 predicate places. [2021-03-24 13:52:36,924 INFO L480 AbstractCegarLoop]: Abstraction has has 904 places, 791 transitions, 50259 flow [2021-03-24 13:52:36,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:36,924 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:52:36,924 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:52:36,924 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-03-24 13:52:36,925 INFO L428 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:52:36,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:52:36,925 INFO L82 PathProgramCache]: Analyzing trace with hash 500095098, now seen corresponding path program 288 times [2021-03-24 13:52:36,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:52:36,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383860492] [2021-03-24 13:52:36,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:52:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:52:36,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:36,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:52:36,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:36,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:52:36,934 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:52:36,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:52:36,945 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:52:36,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:52:36,960 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:52:36,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:52:36,982 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:52:36,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:52:37,000 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:52:37,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:52:37,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:52:37,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383860492] [2021-03-24 13:52:37,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:52:37,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:52:37,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011315834] [2021-03-24 13:52:37,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:52:37,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:52:37,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:52:37,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:52:37,018 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:52:37,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 904 places, 791 transitions, 50259 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:37,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:52:37,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:52:37,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:52:38,598 INFO L129 PetriNetUnfolder]: 274/3434 cut-off events. [2021-03-24 13:52:38,598 INFO L130 PetriNetUnfolder]: For 265718/265843 co-relation queries the response was YES. [2021-03-24 13:52:38,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37721 conditions, 3434 events. 274/3434 cut-off events. For 265718/265843 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 50667 event pairs, 4 based on Foata normal form. 9/3405 useless extension candidates. Maximal degree in co-relation 37516. Up to 559 conditions per place. [2021-03-24 13:52:38,654 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 449 selfloop transitions, 329 changer transitions 4/796 dead transitions. [2021-03-24 13:52:38,654 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 904 places, 796 transitions, 51952 flow [2021-03-24 13:52:38,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:52:38,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:52:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-03-24 13:52:38,655 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2021-03-24 13:52:38,655 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-03-24 13:52:38,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-03-24 13:52:38,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:52:38,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-03-24 13:52:38,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:38,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:38,656 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:38,656 INFO L185 Difference]: Start difference. First operand has 904 places, 791 transitions, 50259 flow. Second operand 8 states and 466 transitions. [2021-03-24 13:52:38,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 904 places, 796 transitions, 51952 flow [2021-03-24 13:52:41,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 897 places, 796 transitions, 51234 flow, removed 18 selfloop flow, removed 7 redundant places. [2021-03-24 13:52:41,025 INFO L241 Difference]: Finished difference. Result has 898 places, 787 transitions, 49969 flow [2021-03-24 13:52:41,026 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=49553, PETRI_DIFFERENCE_MINUEND_PLACES=890, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=49969, PETRI_PLACES=898, PETRI_TRANSITIONS=787} [2021-03-24 13:52:41,026 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 860 predicate places. [2021-03-24 13:52:41,026 INFO L480 AbstractCegarLoop]: Abstraction has has 898 places, 787 transitions, 49969 flow [2021-03-24 13:52:41,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:41,026 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:52:41,026 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:52:41,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-03-24 13:52:41,026 INFO L428 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:52:41,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:52:41,026 INFO L82 PathProgramCache]: Analyzing trace with hash -2063121696, now seen corresponding path program 289 times [2021-03-24 13:52:41,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:52:41,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268378722] [2021-03-24 13:52:41,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:52:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:52:41,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:41,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:52:41,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:41,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:52:41,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:41,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:52:41,042 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:52:41,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:52:41,059 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:52:41,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:52:41,072 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:52:41,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:52:41,090 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:52:41,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:52:41,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:52:41,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268378722] [2021-03-24 13:52:41,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:52:41,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:52:41,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631031625] [2021-03-24 13:52:41,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:52:41,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:52:41,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:52:41,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:52:41,107 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:52:41,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 898 places, 787 transitions, 49969 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:41,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:52:41,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:52:41,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:52:42,681 INFO L129 PetriNetUnfolder]: 273/3419 cut-off events. [2021-03-24 13:52:42,682 INFO L130 PetriNetUnfolder]: For 261247/261342 co-relation queries the response was YES. [2021-03-24 13:52:42,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37179 conditions, 3419 events. 273/3419 cut-off events. For 261247/261342 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 50365 event pairs, 4 based on Foata normal form. 16/3397 useless extension candidates. Maximal degree in co-relation 36976. Up to 553 conditions per place. [2021-03-24 13:52:42,737 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 484 selfloop transitions, 290 changer transitions 5/793 dead transitions. [2021-03-24 13:52:42,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 900 places, 793 transitions, 51664 flow [2021-03-24 13:52:42,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:52:42,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:52:42,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:52:42,738 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:52:42,738 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:52:42,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:52:42,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:52:42,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:52:42,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:42,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:42,738 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:42,738 INFO L185 Difference]: Start difference. First operand has 898 places, 787 transitions, 49969 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:52:42,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 900 places, 793 transitions, 51664 flow [2021-03-24 13:52:45,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 893 places, 793 transitions, 50673 flow, removed 11 selfloop flow, removed 7 redundant places. [2021-03-24 13:52:45,187 INFO L241 Difference]: Finished difference. Result has 894 places, 782 transitions, 49157 flow [2021-03-24 13:52:45,187 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=48986, PETRI_DIFFERENCE_MINUEND_PLACES=886, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=787, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=290, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=49157, PETRI_PLACES=894, PETRI_TRANSITIONS=782} [2021-03-24 13:52:45,187 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 856 predicate places. [2021-03-24 13:52:45,187 INFO L480 AbstractCegarLoop]: Abstraction has has 894 places, 782 transitions, 49157 flow [2021-03-24 13:52:45,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:45,187 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:52:45,187 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:52:45,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-03-24 13:52:45,187 INFO L428 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:52:45,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:52:45,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1231161354, now seen corresponding path program 290 times [2021-03-24 13:52:45,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:52:45,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950296353] [2021-03-24 13:52:45,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:52:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:52:45,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:45,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:52:45,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:45,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:52:45,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:45,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:52:45,203 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:52:45,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:52:45,229 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:52:45,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:52:45,249 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:52:45,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:52:45,267 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:52:45,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:52:45,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:52:45,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950296353] [2021-03-24 13:52:45,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:52:45,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:52:45,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348117552] [2021-03-24 13:52:45,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:52:45,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:52:45,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:52:45,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:52:45,285 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:52:45,285 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 894 places, 782 transitions, 49157 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:45,285 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:52:45,285 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:52:45,285 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:52:46,741 INFO L129 PetriNetUnfolder]: 272/3404 cut-off events. [2021-03-24 13:52:46,741 INFO L130 PetriNetUnfolder]: For 257487/257582 co-relation queries the response was YES. [2021-03-24 13:52:46,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36653 conditions, 3404 events. 272/3404 cut-off events. For 257487/257582 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 50143 event pairs, 4 based on Foata normal form. 16/3384 useless extension candidates. Maximal degree in co-relation 36450. Up to 553 conditions per place. [2021-03-24 13:52:46,795 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 495 selfloop transitions, 276 changer transitions 3/788 dead transitions. [2021-03-24 13:52:46,795 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 895 places, 788 transitions, 50842 flow [2021-03-24 13:52:46,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:52:46,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:52:46,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-03-24 13:52:46,796 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2021-03-24 13:52:46,796 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-03-24 13:52:46,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-03-24 13:52:46,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:52:46,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-03-24 13:52:46,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:46,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:46,797 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:46,797 INFO L185 Difference]: Start difference. First operand has 894 places, 782 transitions, 49157 flow. Second operand 8 states and 466 transitions. [2021-03-24 13:52:46,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 895 places, 788 transitions, 50842 flow [2021-03-24 13:52:49,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 889 places, 788 transitions, 50262 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-03-24 13:52:49,218 INFO L241 Difference]: Finished difference. Result has 890 places, 779 transitions, 48929 flow [2021-03-24 13:52:49,218 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=48593, PETRI_DIFFERENCE_MINUEND_PLACES=882, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=782, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48929, PETRI_PLACES=890, PETRI_TRANSITIONS=779} [2021-03-24 13:52:49,218 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 852 predicate places. [2021-03-24 13:52:49,218 INFO L480 AbstractCegarLoop]: Abstraction has has 890 places, 779 transitions, 48929 flow [2021-03-24 13:52:49,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:49,218 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:52:49,218 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:52:49,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-03-24 13:52:49,218 INFO L428 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:52:49,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:52:49,218 INFO L82 PathProgramCache]: Analyzing trace with hash -475336578, now seen corresponding path program 291 times [2021-03-24 13:52:49,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:52:49,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116381467] [2021-03-24 13:52:49,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:52:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:52:49,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:49,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:52:49,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:49,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:52:49,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:49,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:52:49,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:49,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:52:49,243 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:52:49,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:52:49,256 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:52:49,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:52:49,274 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:52:49,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:52:49,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:52:49,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116381467] [2021-03-24 13:52:49,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:52:49,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:52:49,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317223255] [2021-03-24 13:52:49,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:52:49,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:52:49,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:52:49,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:52:49,292 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:52:49,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 890 places, 779 transitions, 48929 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:49,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:52:49,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:52:49,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:52:50,864 INFO L129 PetriNetUnfolder]: 271/3393 cut-off events. [2021-03-24 13:52:50,865 INFO L130 PetriNetUnfolder]: For 254449/254544 co-relation queries the response was YES. [2021-03-24 13:52:50,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36191 conditions, 3393 events. 271/3393 cut-off events. For 254449/254544 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 50000 event pairs, 4 based on Foata normal form. 16/3373 useless extension candidates. Maximal degree in co-relation 35989. Up to 553 conditions per place. [2021-03-24 13:52:50,914 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 480 selfloop transitions, 291 changer transitions 0/785 dead transitions. [2021-03-24 13:52:50,914 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 893 places, 785 transitions, 50600 flow [2021-03-24 13:52:50,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:52:50,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:52:50,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:52:50,915 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:52:50,915 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:52:50,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:52:50,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:52:50,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:52:50,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:50,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:50,916 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:50,916 INFO L185 Difference]: Start difference. First operand has 890 places, 779 transitions, 48929 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:52:50,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 893 places, 785 transitions, 50600 flow [2021-03-24 13:52:53,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 888 places, 785 transitions, 50069 flow, removed 51 selfloop flow, removed 5 redundant places. [2021-03-24 13:52:53,125 INFO L241 Difference]: Finished difference. Result has 889 places, 779 transitions, 48993 flow [2021-03-24 13:52:53,125 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=48408, PETRI_DIFFERENCE_MINUEND_PLACES=881, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=779, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48993, PETRI_PLACES=889, PETRI_TRANSITIONS=779} [2021-03-24 13:52:53,125 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 851 predicate places. [2021-03-24 13:52:53,125 INFO L480 AbstractCegarLoop]: Abstraction has has 889 places, 779 transitions, 48993 flow [2021-03-24 13:52:53,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:53,125 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:52:53,125 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:52:53,125 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-03-24 13:52:53,125 INFO L428 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:52:53,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:52:53,125 INFO L82 PathProgramCache]: Analyzing trace with hash -2108535338, now seen corresponding path program 292 times [2021-03-24 13:52:53,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:52:53,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752614801] [2021-03-24 13:52:53,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:52:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:52:53,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:53,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:52:53,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:53,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:52:53,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:53,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:52:53,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:53,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:52:53,150 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:52:53,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:52:53,164 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:52:53,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:52:53,182 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:52:53,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:52:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:52:53,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752614801] [2021-03-24 13:52:53,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:52:53,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:52:53,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200639436] [2021-03-24 13:52:53,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:52:53,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:52:53,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:52:53,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:52:53,200 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:52:53,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 889 places, 779 transitions, 48993 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:53,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:52:53,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:52:53,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:52:54,758 INFO L129 PetriNetUnfolder]: 271/3392 cut-off events. [2021-03-24 13:52:54,759 INFO L130 PetriNetUnfolder]: For 252734/252808 co-relation queries the response was YES. [2021-03-24 13:52:54,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36248 conditions, 3392 events. 271/3392 cut-off events. For 252734/252808 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 49992 event pairs, 4 based on Foata normal form. 7/3363 useless extension candidates. Maximal degree in co-relation 36047. Up to 553 conditions per place. [2021-03-24 13:52:54,814 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 480 selfloop transitions, 287 changer transitions 4/785 dead transitions. [2021-03-24 13:52:54,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 896 places, 785 transitions, 50662 flow [2021-03-24 13:52:54,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:52:54,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:52:54,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:52:54,815 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:52:54,815 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:52:54,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:52:54,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:52:54,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:52:54,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:54,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:54,816 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:54,816 INFO L185 Difference]: Start difference. First operand has 889 places, 779 transitions, 48993 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:52:54,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 896 places, 785 transitions, 50662 flow [2021-03-24 13:52:57,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 893 places, 785 transitions, 50267 flow, removed 15 selfloop flow, removed 3 redundant places. [2021-03-24 13:52:57,281 INFO L241 Difference]: Finished difference. Result has 894 places, 775 transitions, 48837 flow [2021-03-24 13:52:57,281 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=48598, PETRI_DIFFERENCE_MINUEND_PLACES=886, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=779, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48837, PETRI_PLACES=894, PETRI_TRANSITIONS=775} [2021-03-24 13:52:57,282 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 856 predicate places. [2021-03-24 13:52:57,282 INFO L480 AbstractCegarLoop]: Abstraction has has 894 places, 775 transitions, 48837 flow [2021-03-24 13:52:57,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:57,282 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:52:57,282 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:52:57,282 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-03-24 13:52:57,282 INFO L428 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:52:57,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:52:57,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1448733920, now seen corresponding path program 293 times [2021-03-24 13:52:57,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:52:57,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764980393] [2021-03-24 13:52:57,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:52:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:52:57,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:57,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:52:57,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:57,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:52:57,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:57,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:52:57,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:57,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:52:57,311 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:52:57,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:52:57,334 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:52:57,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:52:57,351 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:52:57,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:52:57,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:52:57,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764980393] [2021-03-24 13:52:57,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:52:57,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:52:57,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396796642] [2021-03-24 13:52:57,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:52:57,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:52:57,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:52:57,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:52:57,369 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:52:57,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 894 places, 775 transitions, 48837 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:57,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:52:57,369 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:52:57,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:52:58,881 INFO L129 PetriNetUnfolder]: 270/3376 cut-off events. [2021-03-24 13:52:58,881 INFO L130 PetriNetUnfolder]: For 253544/253639 co-relation queries the response was YES. [2021-03-24 13:52:58,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36475 conditions, 3376 events. 270/3376 cut-off events. For 253544/253639 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 49649 event pairs, 4 based on Foata normal form. 16/3357 useless extension candidates. Maximal degree in co-relation 36273. Up to 553 conditions per place. [2021-03-24 13:52:58,935 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 488 selfloop transitions, 277 changer transitions 2/781 dead transitions. [2021-03-24 13:52:58,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 897 places, 781 transitions, 50506 flow [2021-03-24 13:52:58,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:52:58,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:52:58,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:52:58,936 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:52:58,937 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:52:58,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:52:58,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:52:58,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:52:58,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:58,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:58,937 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:58,937 INFO L185 Difference]: Start difference. First operand has 894 places, 775 transitions, 48837 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:52:58,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 897 places, 781 transitions, 50506 flow [2021-03-24 13:53:01,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 891 places, 781 transitions, 49932 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-03-24 13:53:01,290 INFO L241 Difference]: Finished difference. Result has 892 places, 773 transitions, 48691 flow [2021-03-24 13:53:01,291 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=48279, PETRI_DIFFERENCE_MINUEND_PLACES=884, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48691, PETRI_PLACES=892, PETRI_TRANSITIONS=773} [2021-03-24 13:53:01,291 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 854 predicate places. [2021-03-24 13:53:01,291 INFO L480 AbstractCegarLoop]: Abstraction has has 892 places, 773 transitions, 48691 flow [2021-03-24 13:53:01,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:01,291 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:53:01,291 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:53:01,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-03-24 13:53:01,291 INFO L428 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:53:01,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:53:01,291 INFO L82 PathProgramCache]: Analyzing trace with hash 585994104, now seen corresponding path program 294 times [2021-03-24 13:53:01,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:53:01,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078841623] [2021-03-24 13:53:01,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:53:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:53:01,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:01,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:53:01,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:01,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:53:01,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:01,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:53:01,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:01,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:53:01,316 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:53:01,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:53:01,339 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:53:01,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:53:01,357 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:53:01,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:53:01,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:53:01,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078841623] [2021-03-24 13:53:01,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:53:01,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:53:01,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333965819] [2021-03-24 13:53:01,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:53:01,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:53:01,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:53:01,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:53:01,374 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:53:01,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 773 transitions, 48691 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:01,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:53:01,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:53:01,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:53:02,897 INFO L129 PetriNetUnfolder]: 269/3366 cut-off events. [2021-03-24 13:53:02,897 INFO L130 PetriNetUnfolder]: For 250806/250901 co-relation queries the response was YES. [2021-03-24 13:53:02,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36061 conditions, 3366 events. 269/3366 cut-off events. For 250806/250901 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 49482 event pairs, 4 based on Foata normal form. 16/3347 useless extension candidates. Maximal degree in co-relation 35860. Up to 553 conditions per place. [2021-03-24 13:53:02,950 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 484 selfloop transitions, 279 changer transitions 2/779 dead transitions. [2021-03-24 13:53:02,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 897 places, 779 transitions, 50348 flow [2021-03-24 13:53:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:53:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:53:02,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-03-24 13:53:02,951 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2021-03-24 13:53:02,951 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-03-24 13:53:02,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-03-24 13:53:02,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:53:02,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-03-24 13:53:02,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:02,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:02,952 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:02,952 INFO L185 Difference]: Start difference. First operand has 892 places, 773 transitions, 48691 flow. Second operand 8 states and 466 transitions. [2021-03-24 13:53:02,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 897 places, 779 transitions, 50348 flow [2021-03-24 13:53:05,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 892 places, 779 transitions, 49825 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 13:53:05,133 INFO L241 Difference]: Finished difference. Result has 893 places, 771 transitions, 48564 flow [2021-03-24 13:53:05,133 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=48176, PETRI_DIFFERENCE_MINUEND_PLACES=885, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48564, PETRI_PLACES=893, PETRI_TRANSITIONS=771} [2021-03-24 13:53:05,133 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 855 predicate places. [2021-03-24 13:53:05,133 INFO L480 AbstractCegarLoop]: Abstraction has has 893 places, 771 transitions, 48564 flow [2021-03-24 13:53:05,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:05,133 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:53:05,133 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:53:05,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-03-24 13:53:05,133 INFO L428 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:53:05,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:53:05,134 INFO L82 PathProgramCache]: Analyzing trace with hash 945959124, now seen corresponding path program 295 times [2021-03-24 13:53:05,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:53:05,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180733128] [2021-03-24 13:53:05,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:53:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:53:05,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:05,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:53:05,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:05,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:53:05,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:05,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:53:05,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:05,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:53:05,158 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:53:05,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:53:05,170 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:53:05,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:53:05,188 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:53:05,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:53:05,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:53:05,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180733128] [2021-03-24 13:53:05,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:53:05,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:53:05,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618682048] [2021-03-24 13:53:05,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:53:05,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:53:05,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:53:05,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:53:05,205 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:53:05,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 893 places, 771 transitions, 48564 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:05,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:53:05,206 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:53:05,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:53:06,730 INFO L129 PetriNetUnfolder]: 268/3356 cut-off events. [2021-03-24 13:53:06,730 INFO L130 PetriNetUnfolder]: For 250177/250272 co-relation queries the response was YES. [2021-03-24 13:53:06,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35977 conditions, 3356 events. 268/3356 cut-off events. For 250177/250272 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 49301 event pairs, 4 based on Foata normal form. 16/3337 useless extension candidates. Maximal degree in co-relation 35776. Up to 553 conditions per place. [2021-03-24 13:53:06,783 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 485 selfloop transitions, 276 changer transitions 2/777 dead transitions. [2021-03-24 13:53:06,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 896 places, 777 transitions, 50217 flow [2021-03-24 13:53:06,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:53:06,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:53:06,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:53:06,784 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:53:06,784 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:53:06,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:53:06,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:53:06,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:53:06,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:06,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:06,785 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:06,785 INFO L185 Difference]: Start difference. First operand has 893 places, 771 transitions, 48564 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:53:06,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 896 places, 777 transitions, 50217 flow [2021-03-24 13:53:09,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 891 places, 777 transitions, 49663 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 13:53:09,131 INFO L241 Difference]: Finished difference. Result has 892 places, 769 transitions, 48418 flow [2021-03-24 13:53:09,132 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=48018, PETRI_DIFFERENCE_MINUEND_PLACES=884, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48418, PETRI_PLACES=892, PETRI_TRANSITIONS=769} [2021-03-24 13:53:09,132 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 854 predicate places. [2021-03-24 13:53:09,132 INFO L480 AbstractCegarLoop]: Abstraction has has 892 places, 769 transitions, 48418 flow [2021-03-24 13:53:09,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:09,132 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:53:09,132 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:53:09,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-03-24 13:53:09,132 INFO L428 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:53:09,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:53:09,132 INFO L82 PathProgramCache]: Analyzing trace with hash 201256626, now seen corresponding path program 296 times [2021-03-24 13:53:09,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:53:09,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007265496] [2021-03-24 13:53:09,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:53:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:53:09,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:09,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:53:09,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:09,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:53:09,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:09,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:53:09,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:09,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:53:09,159 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:53:09,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:53:09,172 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:53:09,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:53:09,188 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:53:09,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:53:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:53:09,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007265496] [2021-03-24 13:53:09,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:53:09,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:53:09,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418911427] [2021-03-24 13:53:09,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:53:09,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:53:09,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:53:09,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:53:09,207 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:53:09,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 769 transitions, 48418 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:09,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:53:09,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:53:09,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:53:10,705 INFO L129 PetriNetUnfolder]: 267/3346 cut-off events. [2021-03-24 13:53:10,705 INFO L130 PetriNetUnfolder]: For 249119/249193 co-relation queries the response was YES. [2021-03-24 13:53:10,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35883 conditions, 3346 events. 267/3346 cut-off events. For 249119/249193 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 49178 event pairs, 4 based on Foata normal form. 7/3318 useless extension candidates. Maximal degree in co-relation 35682. Up to 553 conditions per place. [2021-03-24 13:53:10,757 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 482 selfloop transitions, 276 changer transitions 3/775 dead transitions. [2021-03-24 13:53:10,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 897 places, 775 transitions, 50067 flow [2021-03-24 13:53:10,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:53:10,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:53:10,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-03-24 13:53:10,758 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2021-03-24 13:53:10,758 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-03-24 13:53:10,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-03-24 13:53:10,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:53:10,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-03-24 13:53:10,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:10,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:10,759 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:10,759 INFO L185 Difference]: Start difference. First operand has 892 places, 769 transitions, 48418 flow. Second operand 8 states and 466 transitions. [2021-03-24 13:53:10,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 897 places, 775 transitions, 50067 flow [2021-03-24 13:53:13,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 892 places, 775 transitions, 49509 flow, removed 23 selfloop flow, removed 5 redundant places. [2021-03-24 13:53:13,035 INFO L241 Difference]: Finished difference. Result has 893 places, 766 transitions, 48200 flow [2021-03-24 13:53:13,036 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=47868, PETRI_DIFFERENCE_MINUEND_PLACES=885, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48200, PETRI_PLACES=893, PETRI_TRANSITIONS=766} [2021-03-24 13:53:13,036 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 855 predicate places. [2021-03-24 13:53:13,036 INFO L480 AbstractCegarLoop]: Abstraction has has 893 places, 766 transitions, 48200 flow [2021-03-24 13:53:13,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:13,036 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:53:13,036 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:53:13,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-03-24 13:53:13,036 INFO L428 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:53:13,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:53:13,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1781545960, now seen corresponding path program 297 times [2021-03-24 13:53:13,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:53:13,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103269410] [2021-03-24 13:53:13,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:53:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:53:13,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:13,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:53:13,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:13,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:53:13,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:13,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:53:13,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:13,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:53:13,061 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:53:13,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:53:13,074 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:53:13,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:53:13,092 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:53:13,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:53:13,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:53:13,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103269410] [2021-03-24 13:53:13,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:53:13,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:53:13,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236812386] [2021-03-24 13:53:13,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:53:13,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:53:13,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:53:13,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:53:13,109 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:53:13,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 893 places, 766 transitions, 48200 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:13,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:53:13,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:53:13,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:53:14,596 INFO L129 PetriNetUnfolder]: 266/3333 cut-off events. [2021-03-24 13:53:14,597 INFO L130 PetriNetUnfolder]: For 247550/247639 co-relation queries the response was YES. [2021-03-24 13:53:14,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35695 conditions, 3333 events. 266/3333 cut-off events. For 247550/247639 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 48895 event pairs, 4 based on Foata normal form. 14/3312 useless extension candidates. Maximal degree in co-relation 35494. Up to 553 conditions per place. [2021-03-24 13:53:14,652 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 464 selfloop transitions, 294 changer transitions 0/772 dead transitions. [2021-03-24 13:53:14,652 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 896 places, 772 transitions, 49843 flow [2021-03-24 13:53:14,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:53:14,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:53:14,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:53:14,653 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:53:14,653 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:53:14,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:53:14,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:53:14,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:53:14,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:14,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:14,654 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:14,654 INFO L185 Difference]: Start difference. First operand has 893 places, 766 transitions, 48200 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:53:14,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 896 places, 772 transitions, 49843 flow [2021-03-24 13:53:17,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 892 places, 772 transitions, 49438 flow, removed 14 selfloop flow, removed 4 redundant places. [2021-03-24 13:53:17,081 INFO L241 Difference]: Finished difference. Result has 894 places, 767 transitions, 48581 flow [2021-03-24 13:53:17,081 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=47803, PETRI_DIFFERENCE_MINUEND_PLACES=885, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48581, PETRI_PLACES=894, PETRI_TRANSITIONS=767} [2021-03-24 13:53:17,081 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 856 predicate places. [2021-03-24 13:53:17,081 INFO L480 AbstractCegarLoop]: Abstraction has has 894 places, 767 transitions, 48581 flow [2021-03-24 13:53:17,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:17,081 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:53:17,081 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:53:17,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-03-24 13:53:17,082 INFO L428 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:53:17,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:53:17,082 INFO L82 PathProgramCache]: Analyzing trace with hash -622000096, now seen corresponding path program 298 times [2021-03-24 13:53:17,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:53:17,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616471627] [2021-03-24 13:53:17,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:53:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:53:17,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:17,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:53:17,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:17,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:53:17,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:17,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:53:17,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:17,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:53:17,108 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:53:17,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:53:17,122 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:53:17,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:53:17,143 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:53:17,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:53:17,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:53:17,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616471627] [2021-03-24 13:53:17,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:53:17,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:53:17,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949028827] [2021-03-24 13:53:17,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:53:17,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:53:17,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:53:17,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:53:17,161 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:53:17,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 894 places, 767 transitions, 48581 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:17,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:53:17,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:53:17,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:53:18,656 INFO L129 PetriNetUnfolder]: 266/3332 cut-off events. [2021-03-24 13:53:18,656 INFO L130 PetriNetUnfolder]: For 250483/250590 co-relation queries the response was YES. [2021-03-24 13:53:18,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35947 conditions, 3332 events. 266/3332 cut-off events. For 250483/250590 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 48919 event pairs, 4 based on Foata normal form. 17/3314 useless extension candidates. Maximal degree in co-relation 35746. Up to 553 conditions per place. [2021-03-24 13:53:18,708 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 463 selfloop transitions, 290 changer transitions 5/772 dead transitions. [2021-03-24 13:53:18,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 901 places, 772 transitions, 50173 flow [2021-03-24 13:53:18,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:53:18,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:53:18,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:53:18,709 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:53:18,710 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:53:18,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:53:18,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:53:18,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:53:18,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:18,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:18,710 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:18,710 INFO L185 Difference]: Start difference. First operand has 894 places, 767 transitions, 48581 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:53:18,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 901 places, 772 transitions, 50173 flow [2021-03-24 13:53:20,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 897 places, 772 transitions, 49571 flow, removed 36 selfloop flow, removed 4 redundant places. [2021-03-24 13:53:21,021 INFO L241 Difference]: Finished difference. Result has 898 places, 762 transitions, 48138 flow [2021-03-24 13:53:21,022 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=47979, PETRI_DIFFERENCE_MINUEND_PLACES=890, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=767, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=290, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48138, PETRI_PLACES=898, PETRI_TRANSITIONS=762} [2021-03-24 13:53:21,022 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 860 predicate places. [2021-03-24 13:53:21,022 INFO L480 AbstractCegarLoop]: Abstraction has has 898 places, 762 transitions, 48138 flow [2021-03-24 13:53:21,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:21,022 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:53:21,022 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:53:21,022 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-03-24 13:53:21,022 INFO L428 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:53:21,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:53:21,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1816621438, now seen corresponding path program 299 times [2021-03-24 13:53:21,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:53:21,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550771201] [2021-03-24 13:53:21,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:53:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:53:21,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:21,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:53:21,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:21,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:53:21,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:21,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:53:21,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:21,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:53:21,046 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-24 13:53:21,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 13:53:21,069 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:53:21,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:53:21,086 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:53:21,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:53:21,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:53:21,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550771201] [2021-03-24 13:53:21,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:53:21,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:53:21,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059381535] [2021-03-24 13:53:21,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:53:21,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:53:21,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:53:21,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:53:21,104 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:53:21,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 898 places, 762 transitions, 48138 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:21,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:53:21,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:53:21,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:53:22,578 INFO L129 PetriNetUnfolder]: 265/3316 cut-off events. [2021-03-24 13:53:22,578 INFO L130 PetriNetUnfolder]: For 249022/249129 co-relation queries the response was YES. [2021-03-24 13:53:22,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35991 conditions, 3316 events. 265/3316 cut-off events. For 249022/249129 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 48637 event pairs, 4 based on Foata normal form. 17/3299 useless extension candidates. Maximal degree in co-relation 35789. Up to 553 conditions per place. [2021-03-24 13:53:22,631 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 471 selfloop transitions, 280 changer transitions 2/767 dead transitions. [2021-03-24 13:53:22,631 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 901 places, 767 transitions, 49728 flow [2021-03-24 13:53:22,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:53:22,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:53:22,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:53:22,632 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:53:22,632 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:53:22,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:53:22,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:53:22,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:53:22,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:22,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:22,632 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:22,633 INFO L185 Difference]: Start difference. First operand has 898 places, 762 transitions, 48138 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:53:22,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 901 places, 767 transitions, 49728 flow [2021-03-24 13:53:24,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 895 places, 767 transitions, 49154 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-03-24 13:53:24,915 INFO L241 Difference]: Finished difference. Result has 896 places, 760 transitions, 47974 flow [2021-03-24 13:53:24,916 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=47580, PETRI_DIFFERENCE_MINUEND_PLACES=888, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47974, PETRI_PLACES=896, PETRI_TRANSITIONS=760} [2021-03-24 13:53:24,916 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 858 predicate places. [2021-03-24 13:53:24,916 INFO L480 AbstractCegarLoop]: Abstraction has has 896 places, 760 transitions, 47974 flow [2021-03-24 13:53:24,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:24,916 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:53:24,916 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:53:24,916 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-03-24 13:53:24,916 INFO L428 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:53:24,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:53:24,916 INFO L82 PathProgramCache]: Analyzing trace with hash -822674192, now seen corresponding path program 300 times [2021-03-24 13:53:24,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:53:24,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907308005] [2021-03-24 13:53:24,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:53:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:53:24,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:24,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:53:24,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:24,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:53:24,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:24,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:53:24,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:24,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:53:24,941 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-24 13:53:24,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 13:53:24,964 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:53:24,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:53:24,982 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:53:24,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:53:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:53:24,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907308005] [2021-03-24 13:53:24,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:53:24,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:53:24,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184068502] [2021-03-24 13:53:24,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:53:24,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:53:24,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:53:24,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:53:24,999 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:53:24,999 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 896 places, 760 transitions, 47974 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:25,000 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:53:25,000 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:53:25,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:53:26,446 INFO L129 PetriNetUnfolder]: 264/3306 cut-off events. [2021-03-24 13:53:26,446 INFO L130 PetriNetUnfolder]: For 246056/246148 co-relation queries the response was YES. [2021-03-24 13:53:26,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35575 conditions, 3306 events. 264/3306 cut-off events. For 246056/246148 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 48469 event pairs, 4 based on Foata normal form. 10/3282 useless extension candidates. Maximal degree in co-relation 35374. Up to 553 conditions per place. [2021-03-24 13:53:26,499 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 467 selfloop transitions, 281 changer transitions 3/765 dead transitions. [2021-03-24 13:53:26,499 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 901 places, 765 transitions, 49552 flow [2021-03-24 13:53:26,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:53:26,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:53:26,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-03-24 13:53:26,500 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2021-03-24 13:53:26,500 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-03-24 13:53:26,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-03-24 13:53:26,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:53:26,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-03-24 13:53:26,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:26,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:26,500 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:26,501 INFO L185 Difference]: Start difference. First operand has 896 places, 760 transitions, 47974 flow. Second operand 8 states and 466 transitions. [2021-03-24 13:53:26,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 901 places, 765 transitions, 49552 flow [2021-03-24 13:53:28,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 896 places, 765 transitions, 49026 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 13:53:28,658 INFO L241 Difference]: Finished difference. Result has 897 places, 757 transitions, 47799 flow [2021-03-24 13:53:28,658 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=47456, PETRI_DIFFERENCE_MINUEND_PLACES=889, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47799, PETRI_PLACES=897, PETRI_TRANSITIONS=757} [2021-03-24 13:53:28,658 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 859 predicate places. [2021-03-24 13:53:28,658 INFO L480 AbstractCegarLoop]: Abstraction has has 897 places, 757 transitions, 47799 flow [2021-03-24 13:53:28,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:28,658 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:53:28,658 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:53:28,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-03-24 13:53:28,659 INFO L428 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:53:28,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:53:28,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1665165356, now seen corresponding path program 301 times [2021-03-24 13:53:28,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:53:28,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482744687] [2021-03-24 13:53:28,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:53:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:53:28,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:28,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:53:28,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:28,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:53:28,672 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:53:28,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:53:28,684 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:53:28,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:53:28,699 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:53:28,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:53:28,712 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:53:28,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:53:28,730 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:53:28,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:53:28,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:53:28,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482744687] [2021-03-24 13:53:28,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:53:28,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:53:28,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36671333] [2021-03-24 13:53:28,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:53:28,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:53:28,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:53:28,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:53:28,748 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:53:28,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 897 places, 757 transitions, 47799 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:28,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:53:28,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:53:28,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:53:30,196 INFO L129 PetriNetUnfolder]: 263/3295 cut-off events. [2021-03-24 13:53:30,196 INFO L130 PetriNetUnfolder]: For 245339/245446 co-relation queries the response was YES. [2021-03-24 13:53:30,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35478 conditions, 3295 events. 263/3295 cut-off events. For 245339/245446 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 48249 event pairs, 4 based on Foata normal form. 13/3275 useless extension candidates. Maximal degree in co-relation 35277. Up to 612 conditions per place. [2021-03-24 13:53:30,248 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 473 selfloop transitions, 288 changer transitions 0/775 dead transitions. [2021-03-24 13:53:30,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 900 places, 775 transitions, 50038 flow [2021-03-24 13:53:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:53:30,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:53:30,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:53:30,249 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:53:30,249 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:53:30,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:53:30,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:53:30,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:53:30,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:30,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:30,250 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:30,250 INFO L185 Difference]: Start difference. First operand has 897 places, 757 transitions, 47799 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:53:30,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 900 places, 775 transitions, 50038 flow [2021-03-24 13:53:32,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 895 places, 775 transitions, 49457 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 13:53:32,502 INFO L241 Difference]: Finished difference. Result has 897 places, 764 transitions, 48309 flow [2021-03-24 13:53:32,502 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=47250, PETRI_DIFFERENCE_MINUEND_PLACES=888, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48309, PETRI_PLACES=897, PETRI_TRANSITIONS=764} [2021-03-24 13:53:32,502 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 859 predicate places. [2021-03-24 13:53:32,502 INFO L480 AbstractCegarLoop]: Abstraction has has 897 places, 764 transitions, 48309 flow [2021-03-24 13:53:32,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:32,502 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:53:32,503 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:53:32,503 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-03-24 13:53:32,503 INFO L428 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:53:32,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:53:32,503 INFO L82 PathProgramCache]: Analyzing trace with hash -950382978, now seen corresponding path program 302 times [2021-03-24 13:53:32,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:53:32,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453133976] [2021-03-24 13:53:32,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:53:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:53:32,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:32,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:53:32,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:32,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:53:32,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:32,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:53:32,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:32,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:53:32,532 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:53:32,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:53:32,545 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:53:32,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:53:32,562 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:53:32,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:53:32,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:53:32,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453133976] [2021-03-24 13:53:32,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:53:32,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:53:32,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559271043] [2021-03-24 13:53:32,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:53:32,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:53:32,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:53:32,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:53:32,580 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:53:32,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 897 places, 764 transitions, 48309 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:32,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:53:32,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:53:32,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:53:34,061 INFO L129 PetriNetUnfolder]: 263/3294 cut-off events. [2021-03-24 13:53:34,062 INFO L130 PetriNetUnfolder]: For 247218/247325 co-relation queries the response was YES. [2021-03-24 13:53:34,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35509 conditions, 3294 events. 263/3294 cut-off events. For 247218/247325 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 48211 event pairs, 4 based on Foata normal form. 17/3277 useless extension candidates. Maximal degree in co-relation 35307. Up to 553 conditions per place. [2021-03-24 13:53:34,114 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 466 selfloop transitions, 287 changer transitions 2/769 dead transitions. [2021-03-24 13:53:34,114 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 904 places, 769 transitions, 49895 flow [2021-03-24 13:53:34,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:53:34,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:53:34,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:53:34,115 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:53:34,115 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:53:34,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:53:34,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:53:34,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:53:34,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:34,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:34,116 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:34,116 INFO L185 Difference]: Start difference. First operand has 897 places, 764 transitions, 48309 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:53:34,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 904 places, 769 transitions, 49895 flow [2021-03-24 13:53:36,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 901 places, 769 transitions, 49372 flow, removed 16 selfloop flow, removed 3 redundant places. [2021-03-24 13:53:36,498 INFO L241 Difference]: Finished difference. Result has 902 places, 762 transitions, 48182 flow [2021-03-24 13:53:36,498 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=47786, PETRI_DIFFERENCE_MINUEND_PLACES=894, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48182, PETRI_PLACES=902, PETRI_TRANSITIONS=762} [2021-03-24 13:53:36,498 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 864 predicate places. [2021-03-24 13:53:36,498 INFO L480 AbstractCegarLoop]: Abstraction has has 902 places, 762 transitions, 48182 flow [2021-03-24 13:53:36,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:36,498 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:53:36,499 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:53:36,499 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-03-24 13:53:36,499 INFO L428 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:53:36,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:53:36,499 INFO L82 PathProgramCache]: Analyzing trace with hash 179641492, now seen corresponding path program 303 times [2021-03-24 13:53:36,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:53:36,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021419711] [2021-03-24 13:53:36,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:53:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:53:36,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:36,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:53:36,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:36,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:53:36,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:36,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:53:36,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:36,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:53:36,527 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:53:36,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:53:36,540 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:53:36,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:53:36,558 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:53:36,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:53:36,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:53:36,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021419711] [2021-03-24 13:53:36,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:53:36,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:53:36,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715884262] [2021-03-24 13:53:36,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:53:36,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:53:36,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:53:36,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:53:36,587 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:53:36,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 902 places, 762 transitions, 48182 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:36,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:53:36,587 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:53:36,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:53:38,064 INFO L129 PetriNetUnfolder]: 262/3284 cut-off events. [2021-03-24 13:53:38,064 INFO L130 PetriNetUnfolder]: For 247770/247877 co-relation queries the response was YES. [2021-03-24 13:53:38,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35765 conditions, 3284 events. 262/3284 cut-off events. For 247770/247877 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 48076 event pairs, 4 based on Foata normal form. 17/3267 useless extension candidates. Maximal degree in co-relation 35562. Up to 553 conditions per place. [2021-03-24 13:53:38,116 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 466 selfloop transitions, 282 changer transitions 4/766 dead transitions. [2021-03-24 13:53:38,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 907 places, 766 transitions, 49756 flow [2021-03-24 13:53:38,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:53:38,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:53:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-03-24 13:53:38,117 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2021-03-24 13:53:38,117 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-03-24 13:53:38,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-03-24 13:53:38,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:53:38,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-03-24 13:53:38,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:38,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:38,117 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:38,117 INFO L185 Difference]: Start difference. First operand has 902 places, 762 transitions, 48182 flow. Second operand 8 states and 466 transitions. [2021-03-24 13:53:38,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 907 places, 766 transitions, 49756 flow [2021-03-24 13:53:40,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 903 places, 766 transitions, 49243 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-03-24 13:53:40,363 INFO L241 Difference]: Finished difference. Result has 904 places, 758 transitions, 47987 flow [2021-03-24 13:53:40,363 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=47675, PETRI_DIFFERENCE_MINUEND_PLACES=896, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=47987, PETRI_PLACES=904, PETRI_TRANSITIONS=758} [2021-03-24 13:53:40,363 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 866 predicate places. [2021-03-24 13:53:40,363 INFO L480 AbstractCegarLoop]: Abstraction has has 904 places, 758 transitions, 47987 flow [2021-03-24 13:53:40,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:40,363 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:53:40,363 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:53:40,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-03-24 13:53:40,363 INFO L428 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:53:40,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:53:40,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1458091684, now seen corresponding path program 304 times [2021-03-24 13:53:40,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:53:40,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024837592] [2021-03-24 13:53:40,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:53:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:53:40,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:40,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:53:40,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:40,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:53:40,373 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:53:40,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:53:40,385 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:53:40,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:53:40,402 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-24 13:53:40,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 13:53:40,424 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:53:40,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:53:40,442 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:53:40,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:53:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:53:40,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024837592] [2021-03-24 13:53:40,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:53:40,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:53:40,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717761377] [2021-03-24 13:53:40,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:53:40,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:53:40,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:53:40,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:53:40,459 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:53:40,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 904 places, 758 transitions, 47987 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:40,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:53:40,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:53:40,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:53:41,899 INFO L129 PetriNetUnfolder]: 261/3269 cut-off events. [2021-03-24 13:53:41,899 INFO L130 PetriNetUnfolder]: For 246345/246394 co-relation queries the response was YES. [2021-03-24 13:53:41,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35617 conditions, 3269 events. 261/3269 cut-off events. For 246345/246394 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 47847 event pairs, 4 based on Foata normal form. 7/3244 useless extension candidates. Maximal degree in co-relation 35414. Up to 608 conditions per place. [2021-03-24 13:53:41,951 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 470 selfloop transitions, 283 changer transitions 2/769 dead transitions. [2021-03-24 13:53:41,952 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 907 places, 769 transitions, 49805 flow [2021-03-24 13:53:41,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:53:41,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:53:41,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:53:41,952 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:53:41,953 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:53:41,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:53:41,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:53:41,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:53:41,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:41,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:41,953 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:41,953 INFO L185 Difference]: Start difference. First operand has 904 places, 758 transitions, 47987 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:53:41,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 907 places, 769 transitions, 49805 flow [2021-03-24 13:53:44,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 902 places, 769 transitions, 49216 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-03-24 13:53:44,277 INFO L241 Difference]: Finished difference. Result has 905 places, 761 transitions, 48211 flow [2021-03-24 13:53:44,277 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=47416, PETRI_DIFFERENCE_MINUEND_PLACES=895, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48211, PETRI_PLACES=905, PETRI_TRANSITIONS=761} [2021-03-24 13:53:44,278 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 867 predicate places. [2021-03-24 13:53:44,278 INFO L480 AbstractCegarLoop]: Abstraction has has 905 places, 761 transitions, 48211 flow [2021-03-24 13:53:44,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:44,278 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:53:44,278 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:53:44,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-03-24 13:53:44,278 INFO L428 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:53:44,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:53:44,278 INFO L82 PathProgramCache]: Analyzing trace with hash -507626642, now seen corresponding path program 305 times [2021-03-24 13:53:44,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:53:44,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475287686] [2021-03-24 13:53:44,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:53:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:53:44,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:44,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:53:44,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:44,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:53:44,288 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:53:44,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:53:44,300 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:53:44,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:53:44,315 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:53:44,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:53:44,336 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:53:44,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:53:44,355 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:53:44,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:53:44,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:53:44,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475287686] [2021-03-24 13:53:44,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:53:44,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:53:44,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508417467] [2021-03-24 13:53:44,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:53:44,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:53:44,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:53:44,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:53:44,372 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:53:44,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 905 places, 761 transitions, 48211 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:44,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:53:44,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:53:44,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:53:45,830 INFO L129 PetriNetUnfolder]: 260/3259 cut-off events. [2021-03-24 13:53:45,830 INFO L130 PetriNetUnfolder]: For 249538/249593 co-relation queries the response was YES. [2021-03-24 13:53:45,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35593 conditions, 3259 events. 260/3259 cut-off events. For 249538/249593 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 47641 event pairs, 4 based on Foata normal form. 9/3236 useless extension candidates. Maximal degree in co-relation 35388. Up to 608 conditions per place. [2021-03-24 13:53:45,883 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 499 selfloop transitions, 262 changer transitions 2/777 dead transitions. [2021-03-24 13:53:45,884 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 911 places, 777 transitions, 50432 flow [2021-03-24 13:53:45,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:53:45,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:53:45,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:53:45,884 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:53:45,885 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:53:45,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:53:45,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:53:45,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:53:45,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:45,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:45,885 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:45,885 INFO L185 Difference]: Start difference. First operand has 905 places, 761 transitions, 48211 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:53:45,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 911 places, 777 transitions, 50432 flow [2021-03-24 13:53:48,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 908 places, 777 transitions, 50037 flow, removed 21 selfloop flow, removed 3 redundant places. [2021-03-24 13:53:48,254 INFO L241 Difference]: Finished difference. Result has 911 places, 767 transitions, 48789 flow [2021-03-24 13:53:48,254 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=47824, PETRI_DIFFERENCE_MINUEND_PLACES=901, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48789, PETRI_PLACES=911, PETRI_TRANSITIONS=767} [2021-03-24 13:53:48,254 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 873 predicate places. [2021-03-24 13:53:48,255 INFO L480 AbstractCegarLoop]: Abstraction has has 911 places, 767 transitions, 48789 flow [2021-03-24 13:53:48,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:48,255 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:53:48,255 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:53:48,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-03-24 13:53:48,255 INFO L428 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:53:48,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:53:48,255 INFO L82 PathProgramCache]: Analyzing trace with hash 755402418, now seen corresponding path program 306 times [2021-03-24 13:53:48,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:53:48,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999820917] [2021-03-24 13:53:48,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:53:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:53:48,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:48,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:53:48,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:48,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:53:48,265 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:53:48,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:53:48,276 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:53:48,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:53:48,293 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-24 13:53:48,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 13:53:48,316 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:53:48,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:53:48,333 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:53:48,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:53:48,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:53:48,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999820917] [2021-03-24 13:53:48,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:53:48,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:53:48,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748549791] [2021-03-24 13:53:48,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:53:48,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:53:48,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:53:48,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:53:48,351 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:53:48,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 911 places, 767 transitions, 48789 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:48,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:53:48,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:53:48,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:53:49,763 INFO L129 PetriNetUnfolder]: 259/3249 cut-off events. [2021-03-24 13:53:49,763 INFO L130 PetriNetUnfolder]: For 250625/250680 co-relation queries the response was YES. [2021-03-24 13:53:49,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35666 conditions, 3249 events. 259/3249 cut-off events. For 250625/250680 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 47436 event pairs, 4 based on Foata normal form. 9/3226 useless extension candidates. Maximal degree in co-relation 35459. Up to 608 conditions per place. [2021-03-24 13:53:49,814 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 476 selfloop transitions, 280 changer transitions 3/773 dead transitions. [2021-03-24 13:53:49,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 917 places, 773 transitions, 50419 flow [2021-03-24 13:53:49,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:53:49,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:53:49,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:53:49,815 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:53:49,815 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:53:49,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:53:49,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:53:49,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:53:49,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:49,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:49,816 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:49,816 INFO L185 Difference]: Start difference. First operand has 911 places, 767 transitions, 48789 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:53:49,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 917 places, 773 transitions, 50419 flow [2021-03-24 13:53:52,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 913 places, 773 transitions, 49938 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-03-24 13:53:52,043 INFO L241 Difference]: Finished difference. Result has 914 places, 764 transitions, 48680 flow [2021-03-24 13:53:52,043 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=48316, PETRI_DIFFERENCE_MINUEND_PLACES=906, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=767, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48680, PETRI_PLACES=914, PETRI_TRANSITIONS=764} [2021-03-24 13:53:52,043 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 876 predicate places. [2021-03-24 13:53:52,043 INFO L480 AbstractCegarLoop]: Abstraction has has 914 places, 764 transitions, 48680 flow [2021-03-24 13:53:52,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:52,043 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:53:52,043 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:53:52,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-03-24 13:53:52,043 INFO L428 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:53:52,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:53:52,044 INFO L82 PathProgramCache]: Analyzing trace with hash -2088311270, now seen corresponding path program 307 times [2021-03-24 13:53:52,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:53:52,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139962610] [2021-03-24 13:53:52,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:53:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:53:52,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:52,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:53:52,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:52,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:53:52,056 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:53:52,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:53:52,068 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:53:52,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:53:52,085 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:53:52,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:53:52,099 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:53:52,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:53:52,118 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:53:52,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:53:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:53:52,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139962610] [2021-03-24 13:53:52,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:53:52,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:53:52,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68356192] [2021-03-24 13:53:52,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:53:52,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:53:52,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:53:52,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:53:52,136 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:53:52,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 914 places, 764 transitions, 48680 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:52,136 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:53:52,136 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:53:52,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:53:53,586 INFO L129 PetriNetUnfolder]: 258/3238 cut-off events. [2021-03-24 13:53:53,586 INFO L130 PetriNetUnfolder]: For 250105/250160 co-relation queries the response was YES. [2021-03-24 13:53:53,631 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35604 conditions, 3238 events. 258/3238 cut-off events. For 250105/250160 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 47279 event pairs, 4 based on Foata normal form. 9/3215 useless extension candidates. Maximal degree in co-relation 35397. Up to 608 conditions per place. [2021-03-24 13:53:53,638 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 475 selfloop transitions, 281 changer transitions 0/770 dead transitions. [2021-03-24 13:53:53,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 920 places, 770 transitions, 50304 flow [2021-03-24 13:53:53,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:53:53,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:53:53,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:53:53,639 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:53:53,639 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:53:53,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:53:53,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:53:53,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:53:53,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:53,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:53,640 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:53,640 INFO L185 Difference]: Start difference. First operand has 914 places, 764 transitions, 48680 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:53:53,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 920 places, 770 transitions, 50304 flow [2021-03-24 13:53:55,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 915 places, 770 transitions, 49751 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-24 13:53:55,961 INFO L241 Difference]: Finished difference. Result has 916 places, 764 transitions, 48700 flow [2021-03-24 13:53:55,961 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=48135, PETRI_DIFFERENCE_MINUEND_PLACES=908, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48700, PETRI_PLACES=916, PETRI_TRANSITIONS=764} [2021-03-24 13:53:55,962 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 878 predicate places. [2021-03-24 13:53:55,962 INFO L480 AbstractCegarLoop]: Abstraction has has 916 places, 764 transitions, 48700 flow [2021-03-24 13:53:55,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:55,962 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:53:55,962 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:53:55,962 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-03-24 13:53:55,962 INFO L428 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:53:55,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:53:55,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1610685514, now seen corresponding path program 308 times [2021-03-24 13:53:55,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:53:55,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324105784] [2021-03-24 13:53:55,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:53:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:53:55,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:55,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:53:55,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:55,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:53:55,972 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:53:55,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:53:55,989 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:53:55,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:53:56,007 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:53:56,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:53:56,021 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:53:56,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:53:56,038 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:53:56,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:53:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:53:56,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324105784] [2021-03-24 13:53:56,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:53:56,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:53:56,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904141472] [2021-03-24 13:53:56,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:53:56,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:53:56,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:53:56,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:53:56,056 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:53:56,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 916 places, 764 transitions, 48700 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:56,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:53:56,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:53:56,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:53:57,540 INFO L129 PetriNetUnfolder]: 258/3237 cut-off events. [2021-03-24 13:53:57,540 INFO L130 PetriNetUnfolder]: For 250075/250130 co-relation queries the response was YES. [2021-03-24 13:53:57,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35614 conditions, 3237 events. 258/3237 cut-off events. For 250075/250130 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 47237 event pairs, 4 based on Foata normal form. 9/3214 useless extension candidates. Maximal degree in co-relation 35407. Up to 608 conditions per place. [2021-03-24 13:53:57,592 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 471 selfloop transitions, 280 changer transitions 5/770 dead transitions. [2021-03-24 13:53:57,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 923 places, 770 transitions, 50324 flow [2021-03-24 13:53:57,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:53:57,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:53:57,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:53:57,593 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:53:57,593 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:53:57,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:53:57,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:53:57,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:53:57,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:57,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:57,594 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:57,594 INFO L185 Difference]: Start difference. First operand has 916 places, 764 transitions, 48700 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:53:57,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 923 places, 770 transitions, 50324 flow [2021-03-24 13:53:59,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 922 places, 770 transitions, 50183 flow, removed 4 selfloop flow, removed 1 redundant places. [2021-03-24 13:53:59,948 INFO L241 Difference]: Finished difference. Result has 923 places, 759 transitions, 48726 flow [2021-03-24 13:53:59,949 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=48559, PETRI_DIFFERENCE_MINUEND_PLACES=915, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=48726, PETRI_PLACES=923, PETRI_TRANSITIONS=759} [2021-03-24 13:53:59,949 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 885 predicate places. [2021-03-24 13:53:59,949 INFO L480 AbstractCegarLoop]: Abstraction has has 923 places, 759 transitions, 48726 flow [2021-03-24 13:53:59,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:59,949 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:53:59,949 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:53:59,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-03-24 13:53:59,949 INFO L428 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:53:59,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:53:59,949 INFO L82 PathProgramCache]: Analyzing trace with hash 674521150, now seen corresponding path program 309 times [2021-03-24 13:53:59,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:53:59,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016373312] [2021-03-24 13:53:59,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:53:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:53:59,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:59,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:53:59,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:59,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:53:59,959 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:53:59,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:53:59,971 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:53:59,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:53:59,986 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:53:59,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:54:00,006 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:54:00,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:54:00,025 INFO L142 QuantifierPusher]: treesize reduction 45, result has 47.7 percent of original size [2021-03-24 13:54:00,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:54:00,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:54:00,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016373312] [2021-03-24 13:54:00,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:54:00,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:54:00,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303713951] [2021-03-24 13:54:00,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:54:00,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:54:00,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:54:00,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:54:00,043 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2021-03-24 13:54:00,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 923 places, 759 transitions, 48726 flow. Second operand has 8 states, 8 states have (on average 55.875) internal successors, (447), 8 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:00,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:54:00,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2021-03-24 13:54:00,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:54:01,438 INFO L129 PetriNetUnfolder]: 257/3222 cut-off events. [2021-03-24 13:54:01,438 INFO L130 PetriNetUnfolder]: For 253489/253538 co-relation queries the response was YES. [2021-03-24 13:54:01,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36003 conditions, 3222 events. 257/3222 cut-off events. For 253489/253538 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 46916 event pairs, 4 based on Foata normal form. 7/3198 useless extension candidates. Maximal degree in co-relation 35795. Up to 608 conditions per place. [2021-03-24 13:54:01,490 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 468 selfloop transitions, 281 changer transitions 2/765 dead transitions. [2021-03-24 13:54:01,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 928 places, 765 transitions, 50348 flow [2021-03-24 13:54:01,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:54:01,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:54:01,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2021-03-24 13:54:01,491 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2021-03-24 13:54:01,491 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2021-03-24 13:54:01,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2021-03-24 13:54:01,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:54:01,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2021-03-24 13:54:01,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:01,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:01,491 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:01,492 INFO L185 Difference]: Start difference. First operand has 923 places, 759 transitions, 48726 flow. Second operand 8 states and 467 transitions. [2021-03-24 13:54:01,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 928 places, 765 transitions, 50348 flow Received shutdown request... [2021-03-24 13:54:02,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-03-24 13:54:02,919 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-24 13:54:02,921 WARN L224 ceAbstractionStarter]: Timeout [2021-03-24 13:54:02,921 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 01:54:02 BasicIcfg [2021-03-24 13:54:02,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 13:54:02,922 INFO L168 Benchmark]: Toolchain (without parser) took 856308.21 ms. Allocated memory was 383.8 MB in the beginning and 2.7 GB in the end (delta: 2.3 GB). Free memory was 364.2 MB in the beginning and 1.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 761.7 MB. Max. memory is 16.0 GB. [2021-03-24 13:54:02,922 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 383.8 MB. Free memory was 365.3 MB in the beginning and 365.2 MB in the end (delta: 79.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:54:02,922 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.14 ms. Allocated memory is still 383.8 MB. Free memory was 364.2 MB in the beginning and 362.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 13:54:02,922 INFO L168 Benchmark]: Boogie Preprocessor took 8.25 ms. Allocated memory is still 383.8 MB. Free memory was 362.7 MB in the beginning and 361.8 MB in the end (delta: 890.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:54:02,922 INFO L168 Benchmark]: RCFGBuilder took 130.56 ms. Allocated memory is still 383.8 MB. Free memory was 361.7 MB in the beginning and 351.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-24 13:54:02,922 INFO L168 Benchmark]: TraceAbstraction took 856148.34 ms. Allocated memory was 383.8 MB in the beginning and 2.7 GB in the end (delta: 2.3 GB). Free memory was 351.0 MB in the beginning and 1.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 749.1 MB. Max. memory is 16.0 GB. [2021-03-24 13:54:02,922 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 383.8 MB. Free memory was 365.3 MB in the beginning and 365.2 MB in the end (delta: 79.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 18.14 ms. Allocated memory is still 383.8 MB. Free memory was 364.2 MB in the beginning and 362.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 8.25 ms. Allocated memory is still 383.8 MB. Free memory was 362.7 MB in the beginning and 361.8 MB in the end (delta: 890.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 130.56 ms. Allocated memory is still 383.8 MB. Free memory was 361.7 MB in the beginning and 351.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 856148.34 ms. Allocated memory was 383.8 MB in the beginning and 2.7 GB in the end (delta: 2.3 GB). Free memory was 351.0 MB in the beginning and 1.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 749.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 146.7ms, 44 PlacesBefore, 38 PlacesAfterwards, 55 TransitionsBefore, 49 TransitionsAfterwards, 780 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 225 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 225, positive: 225, positive conditional: 0, positive unconditional: 225, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 210, positive: 210, positive conditional: 0, positive unconditional: 210, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 210, positive: 210, positive conditional: 0, positive unconditional: 210, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 225, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 210, unknown conditional: 0, unknown unconditional: 210] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - TimeoutResultAtElement [Line: 25]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 25). Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 26.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 856061.8ms, OverallIterations: 313, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 829288.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 276.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5597 SDtfs, 7837 SDslu, 4935 SDs, 0 SdLazy, 9612 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5549.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2484 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 2167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1236 ImplicationChecksByTransitivity, 29191.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=52409occurred in iteration=271, InterpolantAutomatonStates: 2476, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 69.6ms SsaConstructionTime, 209.9ms SatisfiabilityAnalysisTime, 25364.1ms InterpolantComputationTime, 5947 NumberOfCodeBlocks, 5947 NumberOfCodeBlocksAsserted, 313 NumberOfCheckSat, 5634 ConstructedInterpolants, 0 QuantifiedInterpolants, 132667 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 313 InterpolantComputations, 313 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown