/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 22:35:19,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 22:35:19,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 22:35:19,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 22:35:19,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 22:35:19,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 22:35:19,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 22:35:19,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 22:35:19,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 22:35:19,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 22:35:19,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 22:35:19,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 22:35:19,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 22:35:19,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 22:35:19,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 22:35:19,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 22:35:19,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 22:35:19,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 22:35:19,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 22:35:19,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 22:35:19,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 22:35:19,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 22:35:19,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 22:35:19,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 22:35:19,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 22:35:19,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 22:35:19,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 22:35:19,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 22:35:19,338 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-SemanticLbe.epf [2021-03-24 22:35:19,371 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 22:35:19,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 22:35:19,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 22:35:19,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 22:35:19,373 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 22:35:19,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 22:35:19,373 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 22:35:19,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 22:35:19,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 22:35:19,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 22:35:19,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 22:35:19,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 22:35:19,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 22:35:19,374 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 22:35:19,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 22:35:19,375 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 22:35:19,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 22:35:19,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 22:35:19,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 22:35:19,375 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 22:35:19,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 22:35:19,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 22:35:19,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 22:35:19,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 22:35:19,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 22:35:19,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 22:35:19,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 22:35:19,376 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 22:35:19,377 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 22:35:19,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 22:35:19,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 22:35:19,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 22:35:19,666 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 22:35:19,666 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 22:35:19,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl [2021-03-24 22:35:19,667 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl' [2021-03-24 22:35:19,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 22:35:19,696 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 22:35:19,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 22:35:19,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 22:35:19,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 22:35:19,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:35:19" (1/1) ... [2021-03-24 22:35:19,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:35:19" (1/1) ... [2021-03-24 22:35:19,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 22:35:19,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 22:35:19,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 22:35:19,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 22:35:19,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:35:19" (1/1) ... [2021-03-24 22:35:19,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:35:19" (1/1) ... [2021-03-24 22:35:19,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:35:19" (1/1) ... [2021-03-24 22:35:19,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:35:19" (1/1) ... [2021-03-24 22:35:19,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:35:19" (1/1) ... [2021-03-24 22:35:19,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:35:19" (1/1) ... [2021-03-24 22:35:19,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:35:19" (1/1) ... [2021-03-24 22:35:19,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 22:35:19,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 22:35:19,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 22:35:19,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 22:35:19,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:35:19" (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 22:35:19,794 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-24 22:35:19,794 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-24 22:35:19,794 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-24 22:35:19,796 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-24 22:35:19,797 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-24 22:35:19,797 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-24 22:35:19,797 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-24 22:35:19,797 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-24 22:35:19,797 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-24 22:35:19,797 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-24 22:35:19,797 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-24 22:35:19,797 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-24 22:35:19,798 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-24 22:35:19,798 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-24 22:35:19,798 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-24 22:35:19,798 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-24 22:35:19,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 22:35:19,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 22:35:19,800 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 22:35:19,944 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 22:35:19,944 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-24 22:35:19,946 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:35:19 BoogieIcfgContainer [2021-03-24 22:35:19,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 22:35:19,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 22:35:19,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 22:35:19,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 22:35:19,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:35:19" (1/2) ... [2021-03-24 22:35:19,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7375a6b4 and model type example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:35:19, skipping insertion in model container [2021-03-24 22:35:19,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:35:19" (2/2) ... [2021-03-24 22:35:19,952 INFO L111 eAbstractionObserver]: Analyzing ICFG example_5.bpl [2021-03-24 22:35:19,956 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 22:35:19,959 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 22:35:19,960 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 22:35:20,007 INFO L149 ThreadInstanceAdder]: Constructed 25 joinOtherThreadTransitions. [2021-03-24 22:35:20,023 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-24 22:35:20,039 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 22:35:20,039 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 22:35:20,039 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 22:35:20,040 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 22:35:20,040 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 22:35:20,040 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 22:35:20,040 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 22:35:20,040 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 22:35:20,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 48 transitions, 196 flow [2021-03-24 22:35:20,088 INFO L129 PetriNetUnfolder]: 49/98 cut-off events. [2021-03-24 22:35:20,088 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2021-03-24 22:35:20,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 98 events. 49/98 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 331 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 86. Up to 30 conditions per place. [2021-03-24 22:35:20,091 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 48 transitions, 196 flow [2021-03-24 22:35:20,096 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 41 transitions, 172 flow [2021-03-24 22:35:20,097 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 22:35:20,108 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 41 transitions, 172 flow [2021-03-24 22:35:20,110 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 41 transitions, 172 flow [2021-03-24 22:35:20,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 41 transitions, 172 flow [2021-03-24 22:35:20,132 INFO L129 PetriNetUnfolder]: 49/96 cut-off events. [2021-03-24 22:35:20,133 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2021-03-24 22:35:20,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 96 events. 49/96 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 272 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 86. Up to 30 conditions per place. [2021-03-24 22:35:20,136 INFO L142 LiptonReduction]: Number of co-enabled transitions 440 [2021-03-24 22:35:20,235 INFO L154 LiptonReduction]: Checked pairs total: 130 [2021-03-24 22:35:20,235 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-24 22:35:20,237 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 141 [2021-03-24 22:35:20,274 INFO L129 PetriNetUnfolder]: 49/90 cut-off events. [2021-03-24 22:35:20,274 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2021-03-24 22:35:20,274 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:20,275 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:20,275 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:20,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:20,288 INFO L82 PathProgramCache]: Analyzing trace with hash 558068446, now seen corresponding path program 1 times [2021-03-24 22:35:20,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:20,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144904236] [2021-03-24 22:35:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:20,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:20,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:20,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:20,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:35:20,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:20,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:20,406 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 22:35:20,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144904236] [2021-03-24 22:35:20,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:20,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:35:20,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773428985] [2021-03-24 22:35:20,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:35:20,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:20,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:35:20,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:35:20,427 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2021-03-24 22:35:20,428 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 36 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,429 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:20,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2021-03-24 22:35:20,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:20,466 INFO L129 PetriNetUnfolder]: 33/70 cut-off events. [2021-03-24 22:35:20,466 INFO L130 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2021-03-24 22:35:20,467 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 70 events. 33/70 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 173 event pairs, 0 based on Foata normal form. 5/75 useless extension candidates. Maximal degree in co-relation 75. Up to 20 conditions per place. [2021-03-24 22:35:20,469 INFO L132 encePairwiseOnDemand]: 50/53 looper letters, 3 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2021-03-24 22:35:20,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 34 transitions, 160 flow [2021-03-24 22:35:20,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:35:20,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:35:20,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2021-03-24 22:35:20,479 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9245283018867925 [2021-03-24 22:35:20,479 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2021-03-24 22:35:20,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2021-03-24 22:35:20,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:20,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2021-03-24 22:35:20,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,499 INFO L185 Difference]: Start difference. First operand has 32 places, 36 transitions, 162 flow. Second operand 3 states and 147 transitions. [2021-03-24 22:35:20,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 34 transitions, 160 flow [2021-03-24 22:35:20,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 34 transitions, 104 flow, removed 0 selfloop flow, removed 10 redundant places. [2021-03-24 22:35:20,510 INFO L241 Difference]: Finished difference. Result has 24 places, 34 transitions, 98 flow [2021-03-24 22:35:20,511 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=22, 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=98, PETRI_PLACES=24, PETRI_TRANSITIONS=34} [2021-03-24 22:35:20,512 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, -8 predicate places. [2021-03-24 22:35:20,512 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 34 transitions, 98 flow [2021-03-24 22:35:20,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,512 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:20,513 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:20,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 22:35:20,513 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:20,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:20,514 INFO L82 PathProgramCache]: Analyzing trace with hash 168192128, now seen corresponding path program 1 times [2021-03-24 22:35:20,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:20,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5394505] [2021-03-24 22:35:20,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:20,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:20,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:20,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:20,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:35:20,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:20,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:20,536 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 22:35:20,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5394505] [2021-03-24 22:35:20,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:20,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:35:20,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348440582] [2021-03-24 22:35:20,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:35:20,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:20,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:35:20,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:35:20,539 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2021-03-24 22:35:20,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 34 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:20,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2021-03-24 22:35:20,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:20,551 INFO L129 PetriNetUnfolder]: 8/31 cut-off events. [2021-03-24 22:35:20,551 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-24 22:35:20,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 31 events. 8/31 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 11/42 useless extension candidates. Maximal degree in co-relation 32. Up to 6 conditions per place. [2021-03-24 22:35:20,552 INFO L132 encePairwiseOnDemand]: 48/53 looper letters, 1 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2021-03-24 22:35:20,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 78 flow [2021-03-24 22:35:20,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:35:20,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:35:20,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2021-03-24 22:35:20,554 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9245283018867925 [2021-03-24 22:35:20,554 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2021-03-24 22:35:20,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2021-03-24 22:35:20,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:20,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2021-03-24 22:35:20,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,557 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,557 INFO L185 Difference]: Start difference. First operand has 24 places, 34 transitions, 98 flow. Second operand 3 states and 147 transitions. [2021-03-24 22:35:20,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 78 flow [2021-03-24 22:35:20,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 26 transitions, 77 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:35:20,558 INFO L241 Difference]: Finished difference. Result has 25 places, 26 transitions, 75 flow [2021-03-24 22:35:20,559 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=25, PETRI_TRANSITIONS=26} [2021-03-24 22:35:20,559 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, -7 predicate places. [2021-03-24 22:35:20,559 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 26 transitions, 75 flow [2021-03-24 22:35:20,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,560 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:20,560 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:20,560 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 22:35:20,560 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:20,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:20,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1394564792, now seen corresponding path program 1 times [2021-03-24 22:35:20,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:20,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861931459] [2021-03-24 22:35:20,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:20,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:20,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:20,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:20,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:35:20,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:20,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:20,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:20,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861931459] [2021-03-24 22:35:20,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:20,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:35:20,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848612589] [2021-03-24 22:35:20,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:35:20,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:20,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:35:20,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:35:20,583 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2021-03-24 22:35:20,583 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 26 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,583 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:20,583 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2021-03-24 22:35:20,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:20,598 INFO L129 PetriNetUnfolder]: 6/28 cut-off events. [2021-03-24 22:35:20,599 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-24 22:35:20,599 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 28 events. 6/28 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 1/29 useless extension candidates. Maximal degree in co-relation 32. Up to 6 conditions per place. [2021-03-24 22:35:20,599 INFO L132 encePairwiseOnDemand]: 51/53 looper letters, 3 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2021-03-24 22:35:20,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 80 flow [2021-03-24 22:35:20,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:35:20,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:35:20,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2021-03-24 22:35:20,601 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9182389937106918 [2021-03-24 22:35:20,601 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2021-03-24 22:35:20,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2021-03-24 22:35:20,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:20,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2021-03-24 22:35:20,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,604 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,604 INFO L185 Difference]: Start difference. First operand has 25 places, 26 transitions, 75 flow. Second operand 3 states and 146 transitions. [2021-03-24 22:35:20,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 80 flow [2021-03-24 22:35:20,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 79 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:35:20,605 INFO L241 Difference]: Finished difference. Result has 26 places, 25 transitions, 73 flow [2021-03-24 22:35:20,606 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2021-03-24 22:35:20,606 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, -6 predicate places. [2021-03-24 22:35:20,606 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 73 flow [2021-03-24 22:35:20,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,606 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:20,606 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:20,607 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 22:35:20,607 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:20,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:20,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1076427874, now seen corresponding path program 1 times [2021-03-24 22:35:20,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:20,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336954584] [2021-03-24 22:35:20,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:20,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:20,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:20,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:20,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:35:20,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:20,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:20,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:20,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336954584] [2021-03-24 22:35:20,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:20,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:35:20,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7774968] [2021-03-24 22:35:20,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:35:20,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:20,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:35:20,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:35:20,634 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2021-03-24 22:35:20,634 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,634 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:20,634 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2021-03-24 22:35:20,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:20,642 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-24 22:35:20,642 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-24 22:35:20,642 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 16 events. 0/16 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 0 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 22:35:20,642 INFO L132 encePairwiseOnDemand]: 49/53 looper letters, 1 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2021-03-24 22:35:20,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 16 transitions, 50 flow [2021-03-24 22:35:20,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:35:20,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:35:20,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2021-03-24 22:35:20,644 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9182389937106918 [2021-03-24 22:35:20,644 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2021-03-24 22:35:20,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2021-03-24 22:35:20,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:20,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2021-03-24 22:35:20,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,646 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,647 INFO L185 Difference]: Start difference. First operand has 26 places, 25 transitions, 73 flow. Second operand 3 states and 146 transitions. [2021-03-24 22:35:20,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 16 transitions, 50 flow [2021-03-24 22:35:20,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 16 transitions, 49 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:35:20,648 INFO L241 Difference]: Finished difference. Result has 27 places, 16 transitions, 47 flow [2021-03-24 22:35:20,648 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=27, PETRI_TRANSITIONS=16} [2021-03-24 22:35:20,648 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, -5 predicate places. [2021-03-24 22:35:20,648 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 16 transitions, 47 flow [2021-03-24 22:35:20,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,649 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:20,649 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:20,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 22:35:20,649 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:20,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:20,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1201939170, now seen corresponding path program 1 times [2021-03-24 22:35:20,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:20,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763887294] [2021-03-24 22:35:20,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:20,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:20,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:20,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:20,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:20,718 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:20,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:20,736 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:20,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:20,763 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:20,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:20,808 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:20,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:20,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:20,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763887294] [2021-03-24 22:35:20,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:20,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:20,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140932904] [2021-03-24 22:35:20,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:20,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:20,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:20,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:20,849 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:20,850 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 16 transitions, 47 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:20,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:20,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:20,971 INFO L129 PetriNetUnfolder]: 51/136 cut-off events. [2021-03-24 22:35:20,972 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 22:35:20,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 136 events. 51/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 552 event pairs, 17 based on Foata normal form. 1/123 useless extension candidates. Maximal degree in co-relation 241. Up to 41 conditions per place. [2021-03-24 22:35:20,974 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 14 selfloop transitions, 4 changer transitions 1/29 dead transitions. [2021-03-24 22:35:20,975 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 111 flow [2021-03-24 22:35:20,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:20,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:20,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:20,980 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:20,980 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:20,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:20,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:20,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:20,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,985 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,985 INFO L185 Difference]: Start difference. First operand has 27 places, 16 transitions, 47 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:20,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 111 flow [2021-03-24 22:35:20,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:35:20,988 INFO L241 Difference]: Finished difference. Result has 37 places, 19 transitions, 77 flow [2021-03-24 22:35:20,988 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=77, PETRI_PLACES=37, PETRI_TRANSITIONS=19} [2021-03-24 22:35:20,989 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2021-03-24 22:35:20,989 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 19 transitions, 77 flow [2021-03-24 22:35:20,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:20,990 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:20,990 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:20,990 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 22:35:20,990 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:20,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:20,994 INFO L82 PathProgramCache]: Analyzing trace with hash -153380320, now seen corresponding path program 2 times [2021-03-24 22:35:20,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:20,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594213540] [2021-03-24 22:35:20,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:21,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:21,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:21,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:21,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:21,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:21,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:21,094 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:21,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:21,109 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:21,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:21,136 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:21,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:21,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594213540] [2021-03-24 22:35:21,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:21,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:21,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434490311] [2021-03-24 22:35:21,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:21,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:21,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:21,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:21,170 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:21,171 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 19 transitions, 77 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:21,171 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:21,171 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:21,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:21,250 INFO L129 PetriNetUnfolder]: 53/184 cut-off events. [2021-03-24 22:35:21,250 INFO L130 PetriNetUnfolder]: For 163/163 co-relation queries the response was YES. [2021-03-24 22:35:21,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 184 events. 53/184 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 972 event pairs, 17 based on Foata normal form. 1/171 useless extension candidates. Maximal degree in co-relation 442. Up to 50 conditions per place. [2021-03-24 22:35:21,254 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 14 selfloop transitions, 7 changer transitions 1/32 dead transitions. [2021-03-24 22:35:21,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 32 transitions, 177 flow [2021-03-24 22:35:21,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:21,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:21,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:21,256 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:21,256 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:21,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:21,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:21,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:21,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:21,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:21,260 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:21,260 INFO L185 Difference]: Start difference. First operand has 37 places, 19 transitions, 77 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:21,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 32 transitions, 177 flow [2021-03-24 22:35:21,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 164 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-24 22:35:21,263 INFO L241 Difference]: Finished difference. Result has 45 places, 22 transitions, 122 flow [2021-03-24 22:35:21,264 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=122, PETRI_PLACES=45, PETRI_TRANSITIONS=22} [2021-03-24 22:35:21,264 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2021-03-24 22:35:21,264 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 22 transitions, 122 flow [2021-03-24 22:35:21,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:21,264 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:21,265 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:21,265 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 22:35:21,265 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:21,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:21,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1999782006, now seen corresponding path program 3 times [2021-03-24 22:35:21,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:21,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331381733] [2021-03-24 22:35:21,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:21,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:21,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:21,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:21,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:21,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:21,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:21,358 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:21,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:21,379 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:21,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:21,403 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:21,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:21,425 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 22:35:21,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331381733] [2021-03-24 22:35:21,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:21,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:21,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086440382] [2021-03-24 22:35:21,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:21,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:21,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:21,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:21,428 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:21,428 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 22 transitions, 122 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:21,428 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:21,428 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:21,428 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:21,510 INFO L129 PetriNetUnfolder]: 50/258 cut-off events. [2021-03-24 22:35:21,510 INFO L130 PetriNetUnfolder]: For 502/518 co-relation queries the response was YES. [2021-03-24 22:35:21,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 258 events. 50/258 cut-off events. For 502/518 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1768 event pairs, 15 based on Foata normal form. 1/246 useless extension candidates. Maximal degree in co-relation 743. Up to 67 conditions per place. [2021-03-24 22:35:21,512 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 22 selfloop transitions, 9 changer transitions 3/44 dead transitions. [2021-03-24 22:35:21,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 44 transitions, 346 flow [2021-03-24 22:35:21,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:21,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:21,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:21,514 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:21,514 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:21,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:21,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:21,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:21,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:21,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:21,517 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:21,517 INFO L185 Difference]: Start difference. First operand has 45 places, 22 transitions, 122 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:21,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 44 transitions, 346 flow [2021-03-24 22:35:21,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 318 flow, removed 10 selfloop flow, removed 2 redundant places. [2021-03-24 22:35:21,522 INFO L241 Difference]: Finished difference. Result has 53 places, 29 transitions, 218 flow [2021-03-24 22:35:21,522 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=53, PETRI_TRANSITIONS=29} [2021-03-24 22:35:21,522 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2021-03-24 22:35:21,522 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 29 transitions, 218 flow [2021-03-24 22:35:21,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:21,523 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:21,523 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:21,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 22:35:21,523 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:21,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:21,523 INFO L82 PathProgramCache]: Analyzing trace with hash -2138499552, now seen corresponding path program 4 times [2021-03-24 22:35:21,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:21,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658036105] [2021-03-24 22:35:21,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:21,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:21,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:21,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:21,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:21,581 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:21,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:21,592 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:21,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:21,608 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:21,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:21,635 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:21,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:21,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:21,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658036105] [2021-03-24 22:35:21,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:21,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:21,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226193361] [2021-03-24 22:35:21,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:21,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:21,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:21,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:21,661 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:21,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 29 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:21,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:21,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:21,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:21,755 INFO L129 PetriNetUnfolder]: 50/294 cut-off events. [2021-03-24 22:35:21,755 INFO L130 PetriNetUnfolder]: For 838/845 co-relation queries the response was YES. [2021-03-24 22:35:21,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 949 conditions, 294 events. 50/294 cut-off events. For 838/845 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2291 event pairs, 15 based on Foata normal form. 1/277 useless extension candidates. Maximal degree in co-relation 928. Up to 78 conditions per place. [2021-03-24 22:35:21,758 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 23 selfloop transitions, 15 changer transitions 1/49 dead transitions. [2021-03-24 22:35:21,758 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 49 transitions, 459 flow [2021-03-24 22:35:21,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:21,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:21,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:21,760 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:21,760 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:21,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:21,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:21,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:21,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:21,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:21,762 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:21,762 INFO L185 Difference]: Start difference. First operand has 53 places, 29 transitions, 218 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:21,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 49 transitions, 459 flow [2021-03-24 22:35:21,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 49 transitions, 435 flow, removed 9 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:21,766 INFO L241 Difference]: Finished difference. Result has 60 places, 38 transitions, 373 flow [2021-03-24 22:35:21,766 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=373, PETRI_PLACES=60, PETRI_TRANSITIONS=38} [2021-03-24 22:35:21,767 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 28 predicate places. [2021-03-24 22:35:21,767 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 38 transitions, 373 flow [2021-03-24 22:35:21,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:21,767 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:21,767 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:21,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 22:35:21,767 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:21,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:21,768 INFO L82 PathProgramCache]: Analyzing trace with hash -46258848, now seen corresponding path program 5 times [2021-03-24 22:35:21,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:21,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653988978] [2021-03-24 22:35:21,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:21,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:21,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:21,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:21,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:21,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:21,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:21,829 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:21,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:21,852 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:21,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:21,875 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:21,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:21,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:21,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653988978] [2021-03-24 22:35:21,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:21,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:21,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979235521] [2021-03-24 22:35:21,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:21,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:21,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:21,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:21,900 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:21,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 38 transitions, 373 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:21,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:21,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:21,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:21,993 INFO L129 PetriNetUnfolder]: 47/316 cut-off events. [2021-03-24 22:35:21,993 INFO L130 PetriNetUnfolder]: For 1299/1316 co-relation queries the response was YES. [2021-03-24 22:35:21,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 316 events. 47/316 cut-off events. For 1299/1316 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2501 event pairs, 20 based on Foata normal form. 1/303 useless extension candidates. Maximal degree in co-relation 1104. Up to 76 conditions per place. [2021-03-24 22:35:21,996 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 22 selfloop transitions, 20 changer transitions 1/53 dead transitions. [2021-03-24 22:35:21,996 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 53 transitions, 580 flow [2021-03-24 22:35:21,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:21,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:21,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:21,998 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:21,998 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:21,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:21,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:21,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:21,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,001 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,001 INFO L185 Difference]: Start difference. First operand has 60 places, 38 transitions, 373 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:22,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 53 transitions, 580 flow [2021-03-24 22:35:22,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 53 transitions, 555 flow, removed 7 selfloop flow, removed 2 redundant places. [2021-03-24 22:35:22,008 INFO L241 Difference]: Finished difference. Result has 68 places, 42 transitions, 477 flow [2021-03-24 22:35:22,009 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=477, PETRI_PLACES=68, PETRI_TRANSITIONS=42} [2021-03-24 22:35:22,009 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 36 predicate places. [2021-03-24 22:35:22,009 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 42 transitions, 477 flow [2021-03-24 22:35:22,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,009 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:22,009 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:22,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 22:35:22,010 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:22,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:22,010 INFO L82 PathProgramCache]: Analyzing trace with hash -254727096, now seen corresponding path program 6 times [2021-03-24 22:35:22,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:22,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407808345] [2021-03-24 22:35:22,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:22,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:22,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:22,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:22,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:22,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:22,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:22,066 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:22,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:22,082 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:22,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:22,104 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:22,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:22,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407808345] [2021-03-24 22:35:22,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:22,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:22,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308824680] [2021-03-24 22:35:22,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:22,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:22,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:22,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:22,130 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:22,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 42 transitions, 477 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:22,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:22,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:22,225 INFO L129 PetriNetUnfolder]: 41/351 cut-off events. [2021-03-24 22:35:22,225 INFO L130 PetriNetUnfolder]: For 1894/1908 co-relation queries the response was YES. [2021-03-24 22:35:22,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1366 conditions, 351 events. 41/351 cut-off events. For 1894/1908 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3021 event pairs, 21 based on Foata normal form. 3/339 useless extension candidates. Maximal degree in co-relation 1338. Up to 74 conditions per place. [2021-03-24 22:35:22,235 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 28 selfloop transitions, 20 changer transitions 3/61 dead transitions. [2021-03-24 22:35:22,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 61 transitions, 789 flow [2021-03-24 22:35:22,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:22,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:22,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:22,237 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:22,237 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:22,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:22,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:22,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:22,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,239 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,239 INFO L185 Difference]: Start difference. First operand has 68 places, 42 transitions, 477 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:22,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 61 transitions, 789 flow [2021-03-24 22:35:22,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 61 transitions, 745 flow, removed 16 selfloop flow, removed 2 redundant places. [2021-03-24 22:35:22,246 INFO L241 Difference]: Finished difference. Result has 76 places, 46 transitions, 579 flow [2021-03-24 22:35:22,247 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=579, PETRI_PLACES=76, PETRI_TRANSITIONS=46} [2021-03-24 22:35:22,247 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2021-03-24 22:35:22,247 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 46 transitions, 579 flow [2021-03-24 22:35:22,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,248 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:22,248 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:22,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 22:35:22,248 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:22,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:22,249 INFO L82 PathProgramCache]: Analyzing trace with hash 421796960, now seen corresponding path program 7 times [2021-03-24 22:35:22,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:22,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530918055] [2021-03-24 22:35:22,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:22,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:22,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:22,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:22,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:22,283 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:22,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:22,296 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:22,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:22,314 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:22,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:22,335 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:22,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:22,361 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 22:35:22,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530918055] [2021-03-24 22:35:22,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:22,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:22,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293333893] [2021-03-24 22:35:22,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:22,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:22,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:22,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:22,367 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:22,368 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 46 transitions, 579 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,368 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:22,368 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:22,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:22,456 INFO L129 PetriNetUnfolder]: 41/349 cut-off events. [2021-03-24 22:35:22,456 INFO L130 PetriNetUnfolder]: For 2302/2368 co-relation queries the response was YES. [2021-03-24 22:35:22,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 349 events. 41/349 cut-off events. For 2302/2368 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2975 event pairs, 17 based on Foata normal form. 8/340 useless extension candidates. Maximal degree in co-relation 1403. Up to 77 conditions per place. [2021-03-24 22:35:22,459 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 25 selfloop transitions, 24 changer transitions 3/62 dead transitions. [2021-03-24 22:35:22,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 62 transitions, 861 flow [2021-03-24 22:35:22,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:22,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:22,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:22,461 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:22,461 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:22,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:22,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:22,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:22,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,463 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,463 INFO L185 Difference]: Start difference. First operand has 76 places, 46 transitions, 579 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:22,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 62 transitions, 861 flow [2021-03-24 22:35:22,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 62 transitions, 816 flow, removed 15 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:22,470 INFO L241 Difference]: Finished difference. Result has 82 places, 50 transitions, 702 flow [2021-03-24 22:35:22,470 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=702, PETRI_PLACES=82, PETRI_TRANSITIONS=50} [2021-03-24 22:35:22,470 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 50 predicate places. [2021-03-24 22:35:22,470 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 50 transitions, 702 flow [2021-03-24 22:35:22,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,470 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:22,470 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:22,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 22:35:22,471 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:22,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:22,471 INFO L82 PathProgramCache]: Analyzing trace with hash -256403714, now seen corresponding path program 8 times [2021-03-24 22:35:22,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:22,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532099299] [2021-03-24 22:35:22,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:22,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:22,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:22,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:22,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:22,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:22,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:22,507 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:22,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:22,523 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:22,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:22,542 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:22,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:22,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532099299] [2021-03-24 22:35:22,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:22,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:22,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977461659] [2021-03-24 22:35:22,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:22,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:22,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:22,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:22,561 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:22,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 50 transitions, 702 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:22,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:22,562 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:22,673 INFO L129 PetriNetUnfolder]: 34/416 cut-off events. [2021-03-24 22:35:22,673 INFO L130 PetriNetUnfolder]: For 3453/3485 co-relation queries the response was YES. [2021-03-24 22:35:22,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1864 conditions, 416 events. 34/416 cut-off events. For 3453/3485 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3811 event pairs, 6 based on Foata normal form. 1/397 useless extension candidates. Maximal degree in co-relation 1830. Up to 115 conditions per place. [2021-03-24 22:35:22,676 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 55 selfloop transitions, 24 changer transitions 4/93 dead transitions. [2021-03-24 22:35:22,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 93 transitions, 1556 flow [2021-03-24 22:35:22,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:22,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:22,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:22,677 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:22,677 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:22,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:22,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:22,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:22,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,679 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,679 INFO L185 Difference]: Start difference. First operand has 82 places, 50 transitions, 702 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:22,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 93 transitions, 1556 flow [2021-03-24 22:35:22,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 93 transitions, 1498 flow, removed 18 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:22,690 INFO L241 Difference]: Finished difference. Result has 89 places, 66 transitions, 1081 flow [2021-03-24 22:35:22,690 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1081, PETRI_PLACES=89, PETRI_TRANSITIONS=66} [2021-03-24 22:35:22,690 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 57 predicate places. [2021-03-24 22:35:22,690 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 66 transitions, 1081 flow [2021-03-24 22:35:22,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,690 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:22,690 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:22,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 22:35:22,691 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:22,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:22,691 INFO L82 PathProgramCache]: Analyzing trace with hash 41398628, now seen corresponding path program 9 times [2021-03-24 22:35:22,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:22,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562454082] [2021-03-24 22:35:22,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:22,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:22,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:22,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:22,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:22,710 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:22,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:22,720 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:22,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:22,734 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:22,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:22,754 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:22,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:22,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:22,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562454082] [2021-03-24 22:35:22,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:22,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:22,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046064296] [2021-03-24 22:35:22,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:22,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:22,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:22,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:22,774 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:22,774 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 66 transitions, 1081 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,774 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:22,774 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:22,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:22,946 INFO L129 PetriNetUnfolder]: 33/436 cut-off events. [2021-03-24 22:35:22,946 INFO L130 PetriNetUnfolder]: For 3835/3931 co-relation queries the response was YES. [2021-03-24 22:35:22,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1945 conditions, 436 events. 33/436 cut-off events. For 3835/3931 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4136 event pairs, 21 based on Foata normal form. 8/426 useless extension candidates. Maximal degree in co-relation 1908. Up to 94 conditions per place. [2021-03-24 22:35:22,949 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 24 selfloop transitions, 40 changer transitions 3/77 dead transitions. [2021-03-24 22:35:22,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 77 transitions, 1341 flow [2021-03-24 22:35:22,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:22,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:22,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:22,958 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:22,959 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:22,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:22,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:22,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:22,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,960 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,961 INFO L185 Difference]: Start difference. First operand has 89 places, 66 transitions, 1081 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:22,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 77 transitions, 1341 flow [2021-03-24 22:35:22,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 77 transitions, 1310 flow, removed 11 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:22,973 INFO L241 Difference]: Finished difference. Result has 94 places, 67 transitions, 1170 flow [2021-03-24 22:35:22,973 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1170, PETRI_PLACES=94, PETRI_TRANSITIONS=67} [2021-03-24 22:35:22,973 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 62 predicate places. [2021-03-24 22:35:22,973 INFO L480 AbstractCegarLoop]: Abstraction has has 94 places, 67 transitions, 1170 flow [2021-03-24 22:35:22,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:22,974 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:22,974 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:22,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 22:35:22,974 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:22,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:22,974 INFO L82 PathProgramCache]: Analyzing trace with hash 289139752, now seen corresponding path program 10 times [2021-03-24 22:35:22,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:22,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388157217] [2021-03-24 22:35:22,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:22,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:22,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:22,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:22,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:22,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:22,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:23,003 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:23,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:23,016 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:23,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:23,035 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:23,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:23,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388157217] [2021-03-24 22:35:23,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:23,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:23,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905484020] [2021-03-24 22:35:23,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:23,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:23,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:23,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:23,055 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:23,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 67 transitions, 1170 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:23,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:23,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:23,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:23,173 INFO L129 PetriNetUnfolder]: 24/467 cut-off events. [2021-03-24 22:35:23,173 INFO L130 PetriNetUnfolder]: For 4467/4568 co-relation queries the response was YES. [2021-03-24 22:35:23,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2149 conditions, 467 events. 24/467 cut-off events. For 4467/4568 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4645 event pairs, 19 based on Foata normal form. 8/455 useless extension candidates. Maximal degree in co-relation 2111. Up to 95 conditions per place. [2021-03-24 22:35:23,176 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 49 selfloop transitions, 31 changer transitions 4/94 dead transitions. [2021-03-24 22:35:23,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 94 transitions, 1785 flow [2021-03-24 22:35:23,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:23,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:23,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:23,178 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:23,178 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:23,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:23,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:23,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:23,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:23,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:23,180 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:23,180 INFO L185 Difference]: Start difference. First operand has 94 places, 67 transitions, 1170 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:23,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 94 transitions, 1785 flow [2021-03-24 22:35:23,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 94 transitions, 1671 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-03-24 22:35:23,194 INFO L241 Difference]: Finished difference. Result has 98 places, 76 transitions, 1369 flow [2021-03-24 22:35:23,195 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1369, PETRI_PLACES=98, PETRI_TRANSITIONS=76} [2021-03-24 22:35:23,195 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 66 predicate places. [2021-03-24 22:35:23,195 INFO L480 AbstractCegarLoop]: Abstraction has has 98 places, 76 transitions, 1369 flow [2021-03-24 22:35:23,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:23,195 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:23,195 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:23,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 22:35:23,195 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:23,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:23,196 INFO L82 PathProgramCache]: Analyzing trace with hash -297195642, now seen corresponding path program 11 times [2021-03-24 22:35:23,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:23,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938780555] [2021-03-24 22:35:23,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:23,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:23,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:23,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:23,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:23,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:23,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:23,221 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:23,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:23,235 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:23,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:23,253 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:23,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:23,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:23,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938780555] [2021-03-24 22:35:23,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:23,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:23,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114681880] [2021-03-24 22:35:23,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:23,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:23,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:23,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:23,272 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:23,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 76 transitions, 1369 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:23,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:23,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:23,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:23,393 INFO L129 PetriNetUnfolder]: 21/485 cut-off events. [2021-03-24 22:35:23,393 INFO L130 PetriNetUnfolder]: For 4834/4970 co-relation queries the response was YES. [2021-03-24 22:35:23,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2264 conditions, 485 events. 21/485 cut-off events. For 4834/4970 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4905 event pairs, 21 based on Foata normal form. 8/472 useless extension candidates. Maximal degree in co-relation 2224. Up to 95 conditions per place. [2021-03-24 22:35:23,397 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 45 selfloop transitions, 39 changer transitions 2/96 dead transitions. [2021-03-24 22:35:23,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 96 transitions, 1881 flow [2021-03-24 22:35:23,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:23,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:23,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:23,398 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:23,398 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:23,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:23,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:23,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:23,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:23,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:23,400 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:23,400 INFO L185 Difference]: Start difference. First operand has 98 places, 76 transitions, 1369 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:23,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 96 transitions, 1881 flow [2021-03-24 22:35:23,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 96 transitions, 1824 flow, removed 17 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:23,418 INFO L241 Difference]: Finished difference. Result has 104 places, 87 transitions, 1663 flow [2021-03-24 22:35:23,418 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1327, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1663, PETRI_PLACES=104, PETRI_TRANSITIONS=87} [2021-03-24 22:35:23,419 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 72 predicate places. [2021-03-24 22:35:23,419 INFO L480 AbstractCegarLoop]: Abstraction has has 104 places, 87 transitions, 1663 flow [2021-03-24 22:35:23,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:23,419 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:23,419 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:23,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-24 22:35:23,419 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:23,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:23,420 INFO L82 PathProgramCache]: Analyzing trace with hash 908333830, now seen corresponding path program 12 times [2021-03-24 22:35:23,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:23,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491891166] [2021-03-24 22:35:23,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:23,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:23,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:23,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:23,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:23,438 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:23,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:23,447 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:23,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:23,466 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:23,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:23,484 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:23,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:23,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:23,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491891166] [2021-03-24 22:35:23,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:23,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:23,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548102638] [2021-03-24 22:35:23,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:23,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:23,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:23,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:23,505 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:23,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 87 transitions, 1663 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:23,505 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:23,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:23,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:23,639 INFO L129 PetriNetUnfolder]: 21/479 cut-off events. [2021-03-24 22:35:23,640 INFO L130 PetriNetUnfolder]: For 5447/5594 co-relation queries the response was YES. [2021-03-24 22:35:23,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2349 conditions, 479 events. 21/479 cut-off events. For 5447/5594 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4815 event pairs, 21 based on Foata normal form. 11/472 useless extension candidates. Maximal degree in co-relation 2307. Up to 93 conditions per place. [2021-03-24 22:35:23,643 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 29 selfloop transitions, 56 changer transitions 4/99 dead transitions. [2021-03-24 22:35:23,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 99 transitions, 2039 flow [2021-03-24 22:35:23,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:23,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:23,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:23,645 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:23,645 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:23,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:23,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:23,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:23,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:23,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:23,647 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:23,647 INFO L185 Difference]: Start difference. First operand has 104 places, 87 transitions, 1663 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:23,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 99 transitions, 2039 flow [2021-03-24 22:35:23,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 99 transitions, 1937 flow, removed 23 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:23,669 INFO L241 Difference]: Finished difference. Result has 107 places, 87 transitions, 1732 flow [2021-03-24 22:35:23,669 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1732, PETRI_PLACES=107, PETRI_TRANSITIONS=87} [2021-03-24 22:35:23,670 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 75 predicate places. [2021-03-24 22:35:23,670 INFO L480 AbstractCegarLoop]: Abstraction has has 107 places, 87 transitions, 1732 flow [2021-03-24 22:35:23,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:23,670 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:23,670 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:23,670 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-24 22:35:23,670 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:23,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:23,671 INFO L82 PathProgramCache]: Analyzing trace with hash -156049302, now seen corresponding path program 13 times [2021-03-24 22:35:23,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:23,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767133115] [2021-03-24 22:35:23,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:23,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:23,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:23,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:23,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:23,690 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:23,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:23,700 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:23,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:23,714 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:23,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:23,734 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:23,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:23,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:23,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767133115] [2021-03-24 22:35:23,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:23,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:23,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826810513] [2021-03-24 22:35:23,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:23,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:23,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:23,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:23,773 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:23,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 87 transitions, 1732 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:23,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:23,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:23,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:23,891 INFO L129 PetriNetUnfolder]: 21/468 cut-off events. [2021-03-24 22:35:23,892 INFO L130 PetriNetUnfolder]: For 5525/5661 co-relation queries the response was YES. [2021-03-24 22:35:23,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2342 conditions, 468 events. 21/468 cut-off events. For 5525/5661 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4680 event pairs, 21 based on Foata normal form. 12/464 useless extension candidates. Maximal degree in co-relation 2300. Up to 93 conditions per place. [2021-03-24 22:35:23,895 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 31 selfloop transitions, 54 changer transitions 2/97 dead transitions. [2021-03-24 22:35:23,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 97 transitions, 2075 flow [2021-03-24 22:35:23,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:23,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:23,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:23,896 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:23,896 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:23,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:23,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:23,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:23,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:23,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:23,898 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:23,898 INFO L185 Difference]: Start difference. First operand has 107 places, 87 transitions, 1732 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:23,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 97 transitions, 2075 flow [2021-03-24 22:35:23,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 97 transitions, 1961 flow, removed 17 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:23,919 INFO L241 Difference]: Finished difference. Result has 111 places, 89 transitions, 1833 flow [2021-03-24 22:35:23,919 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1638, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1833, PETRI_PLACES=111, PETRI_TRANSITIONS=89} [2021-03-24 22:35:23,919 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 79 predicate places. [2021-03-24 22:35:23,919 INFO L480 AbstractCegarLoop]: Abstraction has has 111 places, 89 transitions, 1833 flow [2021-03-24 22:35:23,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:23,920 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:23,920 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:23,920 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-24 22:35:23,920 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:23,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:23,920 INFO L82 PathProgramCache]: Analyzing trace with hash -255599292, now seen corresponding path program 14 times [2021-03-24 22:35:23,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:23,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275889193] [2021-03-24 22:35:23,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:23,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:23,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:23,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:23,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:23,939 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:23,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:23,949 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:23,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:23,963 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:23,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:23,984 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:23,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:24,003 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 22:35:24,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275889193] [2021-03-24 22:35:24,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:24,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:24,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153078637] [2021-03-24 22:35:24,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:24,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:24,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:24,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:24,005 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:24,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 89 transitions, 1833 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:24,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:24,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:24,102 INFO L129 PetriNetUnfolder]: 21/462 cut-off events. [2021-03-24 22:35:24,102 INFO L130 PetriNetUnfolder]: For 5711/5857 co-relation queries the response was YES. [2021-03-24 22:35:24,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2349 conditions, 462 events. 21/462 cut-off events. For 5711/5857 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4590 event pairs, 21 based on Foata normal form. 15/461 useless extension candidates. Maximal degree in co-relation 2305. Up to 93 conditions per place. [2021-03-24 22:35:24,105 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 27 selfloop transitions, 55 changer transitions 3/95 dead transitions. [2021-03-24 22:35:24,105 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 95 transitions, 2078 flow [2021-03-24 22:35:24,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:24,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:24,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-24 22:35:24,107 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-24 22:35:24,107 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-24 22:35:24,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-24 22:35:24,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:24,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-24 22:35:24,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,109 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,109 INFO L185 Difference]: Start difference. First operand has 111 places, 89 transitions, 1833 flow. Second operand 7 states and 306 transitions. [2021-03-24 22:35:24,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 95 transitions, 2078 flow [2021-03-24 22:35:24,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 95 transitions, 1988 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:24,129 INFO L241 Difference]: Finished difference. Result has 114 places, 89 transitions, 1870 flow [2021-03-24 22:35:24,129 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1870, PETRI_PLACES=114, PETRI_TRANSITIONS=89} [2021-03-24 22:35:24,129 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 82 predicate places. [2021-03-24 22:35:24,129 INFO L480 AbstractCegarLoop]: Abstraction has has 114 places, 89 transitions, 1870 flow [2021-03-24 22:35:24,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,130 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:24,130 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:24,130 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-24 22:35:24,130 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:24,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:24,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1133551750, now seen corresponding path program 15 times [2021-03-24 22:35:24,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:24,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076243768] [2021-03-24 22:35:24,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:24,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:24,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:24,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:24,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:24,149 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:24,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:24,158 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:24,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:24,171 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:24,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:24,189 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:24,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:24,206 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 22:35:24,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076243768] [2021-03-24 22:35:24,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:24,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:24,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107536151] [2021-03-24 22:35:24,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:24,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:24,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:24,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:24,208 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:24,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 89 transitions, 1870 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:24,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:24,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:24,319 INFO L129 PetriNetUnfolder]: 21/455 cut-off events. [2021-03-24 22:35:24,320 INFO L130 PetriNetUnfolder]: For 5573/5709 co-relation queries the response was YES. [2021-03-24 22:35:24,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2345 conditions, 455 events. 21/455 cut-off events. For 5573/5709 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4497 event pairs, 21 based on Foata normal form. 13/450 useless extension candidates. Maximal degree in co-relation 2301. Up to 93 conditions per place. [2021-03-24 22:35:24,323 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 28 selfloop transitions, 54 changer transitions 3/95 dead transitions. [2021-03-24 22:35:24,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 95 transitions, 2125 flow [2021-03-24 22:35:24,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:24,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:24,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:24,324 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:24,324 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:24,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:24,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:24,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:24,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,326 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,326 INFO L185 Difference]: Start difference. First operand has 114 places, 89 transitions, 1870 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:24,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 95 transitions, 2125 flow [2021-03-24 22:35:24,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 95 transitions, 2000 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 22:35:24,346 INFO L241 Difference]: Finished difference. Result has 114 places, 89 transitions, 1876 flow [2021-03-24 22:35:24,346 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1757, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1876, PETRI_PLACES=114, PETRI_TRANSITIONS=89} [2021-03-24 22:35:24,346 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 82 predicate places. [2021-03-24 22:35:24,346 INFO L480 AbstractCegarLoop]: Abstraction has has 114 places, 89 transitions, 1876 flow [2021-03-24 22:35:24,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,347 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:24,347 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:24,347 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-24 22:35:24,347 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:24,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:24,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1140350436, now seen corresponding path program 16 times [2021-03-24 22:35:24,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:24,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775257675] [2021-03-24 22:35:24,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:24,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:24,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:24,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:24,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:24,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:24,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:24,372 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:24,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:24,395 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:24,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:24,412 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:24,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:24,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775257675] [2021-03-24 22:35:24,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:24,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:24,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277893584] [2021-03-24 22:35:24,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:24,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:24,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:24,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:24,431 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:24,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 89 transitions, 1876 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:24,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:24,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:24,531 INFO L129 PetriNetUnfolder]: 21/448 cut-off events. [2021-03-24 22:35:24,531 INFO L130 PetriNetUnfolder]: For 5212/5297 co-relation queries the response was YES. [2021-03-24 22:35:24,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2300 conditions, 448 events. 21/448 cut-off events. For 5212/5297 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4433 event pairs, 17 based on Foata normal form. 9/440 useless extension candidates. Maximal degree in co-relation 2257. Up to 91 conditions per place. [2021-03-24 22:35:24,534 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 54 selfloop transitions, 39 changer transitions 1/104 dead transitions. [2021-03-24 22:35:24,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 104 transitions, 2331 flow [2021-03-24 22:35:24,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:24,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:24,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:24,535 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:24,535 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:24,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:24,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:24,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:24,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,538 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,538 INFO L185 Difference]: Start difference. First operand has 114 places, 89 transitions, 1876 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:24,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 104 transitions, 2331 flow [2021-03-24 22:35:24,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 104 transitions, 2213 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:24,558 INFO L241 Difference]: Finished difference. Result has 119 places, 95 transitions, 2006 flow [2021-03-24 22:35:24,558 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1774, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2006, PETRI_PLACES=119, PETRI_TRANSITIONS=95} [2021-03-24 22:35:24,558 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 87 predicate places. [2021-03-24 22:35:24,559 INFO L480 AbstractCegarLoop]: Abstraction has has 119 places, 95 transitions, 2006 flow [2021-03-24 22:35:24,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,559 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:24,559 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:24,559 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-24 22:35:24,559 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:24,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:24,559 INFO L82 PathProgramCache]: Analyzing trace with hash -665867718, now seen corresponding path program 17 times [2021-03-24 22:35:24,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:24,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27957623] [2021-03-24 22:35:24,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:24,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:24,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:24,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:24,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:24,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:24,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:24,584 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:24,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:24,607 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:24,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:24,627 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:24,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:24,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:24,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27957623] [2021-03-24 22:35:24,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:24,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:24,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082682451] [2021-03-24 22:35:24,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:24,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:24,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:24,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:24,646 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:24,647 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 95 transitions, 2006 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,647 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:24,647 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:24,647 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:24,744 INFO L129 PetriNetUnfolder]: 21/442 cut-off events. [2021-03-24 22:35:24,744 INFO L130 PetriNetUnfolder]: For 5590/5672 co-relation queries the response was YES. [2021-03-24 22:35:24,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2336 conditions, 442 events. 21/442 cut-off events. For 5590/5672 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4346 event pairs, 17 based on Foata normal form. 8/433 useless extension candidates. Maximal degree in co-relation 2290. Up to 91 conditions per place. [2021-03-24 22:35:24,747 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 52 selfloop transitions, 38 changer transitions 3/103 dead transitions. [2021-03-24 22:35:24,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 103 transitions, 2318 flow [2021-03-24 22:35:24,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:24,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:24,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:24,749 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:24,749 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:24,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:24,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:24,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:24,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,750 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,751 INFO L185 Difference]: Start difference. First operand has 119 places, 95 transitions, 2006 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:24,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 103 transitions, 2318 flow [2021-03-24 22:35:24,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 103 transitions, 2278 flow, removed 10 selfloop flow, removed 2 redundant places. [2021-03-24 22:35:24,773 INFO L241 Difference]: Finished difference. Result has 124 places, 95 transitions, 2070 flow [2021-03-24 22:35:24,773 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1972, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2070, PETRI_PLACES=124, PETRI_TRANSITIONS=95} [2021-03-24 22:35:24,773 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 92 predicate places. [2021-03-24 22:35:24,773 INFO L480 AbstractCegarLoop]: Abstraction has has 124 places, 95 transitions, 2070 flow [2021-03-24 22:35:24,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,773 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:24,773 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:24,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-24 22:35:24,774 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:24,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:24,774 INFO L82 PathProgramCache]: Analyzing trace with hash -798335486, now seen corresponding path program 18 times [2021-03-24 22:35:24,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:24,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716753250] [2021-03-24 22:35:24,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:24,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:24,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:24,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:24,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:24,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:24,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:24,801 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:24,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:24,815 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:24,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:24,833 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:24,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:24,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716753250] [2021-03-24 22:35:24,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:24,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:24,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955853814] [2021-03-24 22:35:24,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:24,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:24,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:24,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:24,852 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:24,852 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 95 transitions, 2070 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,852 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:24,852 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:24,852 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:24,960 INFO L129 PetriNetUnfolder]: 21/433 cut-off events. [2021-03-24 22:35:24,960 INFO L130 PetriNetUnfolder]: For 5738/5820 co-relation queries the response was YES. [2021-03-24 22:35:24,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2342 conditions, 433 events. 21/433 cut-off events. For 5738/5820 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4230 event pairs, 17 based on Foata normal form. 8/424 useless extension candidates. Maximal degree in co-relation 2295. Up to 91 conditions per place. [2021-03-24 22:35:24,963 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 44 selfloop transitions, 44 changer transitions 2/100 dead transitions. [2021-03-24 22:35:24,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 100 transitions, 2302 flow [2021-03-24 22:35:24,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:24,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:24,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:24,964 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:24,964 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:24,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:24,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:24,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:24,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,966 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,966 INFO L185 Difference]: Start difference. First operand has 124 places, 95 transitions, 2070 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:24,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 100 transitions, 2302 flow [2021-03-24 22:35:24,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 100 transitions, 2222 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:24,989 INFO L241 Difference]: Finished difference. Result has 126 places, 94 transitions, 2068 flow [2021-03-24 22:35:24,989 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1996, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2068, PETRI_PLACES=126, PETRI_TRANSITIONS=94} [2021-03-24 22:35:24,989 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 94 predicate places. [2021-03-24 22:35:24,989 INFO L480 AbstractCegarLoop]: Abstraction has has 126 places, 94 transitions, 2068 flow [2021-03-24 22:35:24,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:24,989 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:24,990 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:24,990 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-24 22:35:24,990 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:24,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:24,990 INFO L82 PathProgramCache]: Analyzing trace with hash -966484266, now seen corresponding path program 19 times [2021-03-24 22:35:24,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:24,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359028040] [2021-03-24 22:35:24,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:25,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:25,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:25,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:25,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:25,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:25,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:25,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:25,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 22:35:25,027 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:25,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:25,045 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:25,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:25,062 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 22:35:25,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359028040] [2021-03-24 22:35:25,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:25,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:25,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012985308] [2021-03-24 22:35:25,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:25,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:25,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:25,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:25,063 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:25,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 94 transitions, 2068 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:25,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:25,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:25,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:25,178 INFO L129 PetriNetUnfolder]: 17/451 cut-off events. [2021-03-24 22:35:25,179 INFO L130 PetriNetUnfolder]: For 6038/6120 co-relation queries the response was YES. [2021-03-24 22:35:25,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2425 conditions, 451 events. 17/451 cut-off events. For 6038/6120 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4495 event pairs, 17 based on Foata normal form. 7/440 useless extension candidates. Maximal degree in co-relation 2378. Up to 90 conditions per place. [2021-03-24 22:35:25,182 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 64 selfloop transitions, 37 changer transitions 2/113 dead transitions. [2021-03-24 22:35:25,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 113 transitions, 2677 flow [2021-03-24 22:35:25,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:25,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:25,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:25,183 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:25,183 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:25,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:25,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:25,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:25,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:25,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:25,184 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:25,184 INFO L185 Difference]: Start difference. First operand has 126 places, 94 transitions, 2068 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:25,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 113 transitions, 2677 flow [2021-03-24 22:35:25,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 113 transitions, 2583 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:25,209 INFO L241 Difference]: Finished difference. Result has 131 places, 99 transitions, 2215 flow [2021-03-24 22:35:25,209 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1989, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2215, PETRI_PLACES=131, PETRI_TRANSITIONS=99} [2021-03-24 22:35:25,209 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 99 predicate places. [2021-03-24 22:35:25,209 INFO L480 AbstractCegarLoop]: Abstraction has has 131 places, 99 transitions, 2215 flow [2021-03-24 22:35:25,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:25,209 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:25,209 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:25,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-24 22:35:25,210 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:25,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:25,210 INFO L82 PathProgramCache]: Analyzing trace with hash -2071671752, now seen corresponding path program 20 times [2021-03-24 22:35:25,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:25,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7058950] [2021-03-24 22:35:25,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:25,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:25,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:25,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:25,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:25,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:25,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:25,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:25,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 22:35:25,252 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:25,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:25,270 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:25,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:25,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:25,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7058950] [2021-03-24 22:35:25,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:25,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:25,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923974795] [2021-03-24 22:35:25,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:25,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:25,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:25,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:25,289 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:25,289 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 99 transitions, 2215 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:25,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:25,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:25,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:25,400 INFO L129 PetriNetUnfolder]: 17/444 cut-off events. [2021-03-24 22:35:25,400 INFO L130 PetriNetUnfolder]: For 6392/6481 co-relation queries the response was YES. [2021-03-24 22:35:25,401 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 444 events. 17/444 cut-off events. For 6392/6481 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4405 event pairs, 17 based on Foata normal form. 8/437 useless extension candidates. Maximal degree in co-relation 2385. Up to 91 conditions per place. [2021-03-24 22:35:25,403 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 53 selfloop transitions, 41 changer transitions 2/106 dead transitions. [2021-03-24 22:35:25,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 106 transitions, 2520 flow [2021-03-24 22:35:25,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:25,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:25,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:25,404 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:25,404 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:25,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:25,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:25,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:25,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:25,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:25,406 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:25,406 INFO L185 Difference]: Start difference. First operand has 131 places, 99 transitions, 2215 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:25,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 106 transitions, 2520 flow [2021-03-24 22:35:25,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 106 transitions, 2457 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:25,432 INFO L241 Difference]: Finished difference. Result has 135 places, 99 transitions, 2262 flow [2021-03-24 22:35:25,432 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2161, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2262, PETRI_PLACES=135, PETRI_TRANSITIONS=99} [2021-03-24 22:35:25,432 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 103 predicate places. [2021-03-24 22:35:25,432 INFO L480 AbstractCegarLoop]: Abstraction has has 135 places, 99 transitions, 2262 flow [2021-03-24 22:35:25,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:25,432 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:25,432 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:25,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-24 22:35:25,433 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:25,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:25,433 INFO L82 PathProgramCache]: Analyzing trace with hash 248574312, now seen corresponding path program 21 times [2021-03-24 22:35:25,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:25,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579674758] [2021-03-24 22:35:25,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:25,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:25,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:25,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:25,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:25,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:25,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:25,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:25,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 22:35:25,469 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:25,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:25,488 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:25,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:25,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:25,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579674758] [2021-03-24 22:35:25,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:25,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:25,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309322674] [2021-03-24 22:35:25,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:25,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:25,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:25,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:25,507 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:25,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 99 transitions, 2262 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:25,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:25,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:25,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:25,623 INFO L129 PetriNetUnfolder]: 17/437 cut-off events. [2021-03-24 22:35:25,623 INFO L130 PetriNetUnfolder]: For 6662/6775 co-relation queries the response was YES. [2021-03-24 22:35:25,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2457 conditions, 437 events. 17/437 cut-off events. For 6662/6775 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4291 event pairs, 17 based on Foata normal form. 12/432 useless extension candidates. Maximal degree in co-relation 2406. Up to 91 conditions per place. [2021-03-24 22:35:25,626 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 52 selfloop transitions, 40 changer transitions 2/104 dead transitions. [2021-03-24 22:35:25,626 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 104 transitions, 2510 flow [2021-03-24 22:35:25,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:25,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:25,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:25,627 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:25,627 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:25,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:25,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:25,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:25,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:25,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:25,628 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:25,628 INFO L185 Difference]: Start difference. First operand has 135 places, 99 transitions, 2262 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:25,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 104 transitions, 2510 flow [2021-03-24 22:35:25,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 104 transitions, 2430 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:25,654 INFO L241 Difference]: Finished difference. Result has 137 places, 99 transitions, 2273 flow [2021-03-24 22:35:25,655 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2188, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2273, PETRI_PLACES=137, PETRI_TRANSITIONS=99} [2021-03-24 22:35:25,655 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 105 predicate places. [2021-03-24 22:35:25,655 INFO L480 AbstractCegarLoop]: Abstraction has has 137 places, 99 transitions, 2273 flow [2021-03-24 22:35:25,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:25,655 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:25,655 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:25,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-24 22:35:25,655 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:25,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:25,656 INFO L82 PathProgramCache]: Analyzing trace with hash -729072352, now seen corresponding path program 22 times [2021-03-24 22:35:25,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:25,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974019582] [2021-03-24 22:35:25,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:25,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:25,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:25,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:25,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:25,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:25,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:25,683 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:25,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:25,697 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:25,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:25,715 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:25,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:25,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974019582] [2021-03-24 22:35:25,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:25,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:25,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966859058] [2021-03-24 22:35:25,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:25,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:25,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:25,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:25,735 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:25,735 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 99 transitions, 2273 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:25,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:25,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:25,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:25,843 INFO L129 PetriNetUnfolder]: 17/430 cut-off events. [2021-03-24 22:35:25,843 INFO L130 PetriNetUnfolder]: For 6501/6611 co-relation queries the response was YES. [2021-03-24 22:35:25,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2457 conditions, 430 events. 17/430 cut-off events. For 6501/6611 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4204 event pairs, 17 based on Foata normal form. 8/421 useless extension candidates. Maximal degree in co-relation 2407. Up to 90 conditions per place. [2021-03-24 22:35:25,847 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 58 selfloop transitions, 39 changer transitions 2/109 dead transitions. [2021-03-24 22:35:25,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 109 transitions, 2666 flow [2021-03-24 22:35:25,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:25,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:25,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:25,848 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:25,848 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:25,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:25,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:25,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:25,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:25,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:25,849 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:25,850 INFO L185 Difference]: Start difference. First operand has 137 places, 99 transitions, 2273 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:25,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 109 transitions, 2666 flow [2021-03-24 22:35:25,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 109 transitions, 2601 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:25,877 INFO L241 Difference]: Finished difference. Result has 143 places, 102 transitions, 2409 flow [2021-03-24 22:35:25,878 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2217, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2409, PETRI_PLACES=143, PETRI_TRANSITIONS=102} [2021-03-24 22:35:25,878 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 111 predicate places. [2021-03-24 22:35:25,878 INFO L480 AbstractCegarLoop]: Abstraction has has 143 places, 102 transitions, 2409 flow [2021-03-24 22:35:25,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:25,878 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:25,878 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:25,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-24 22:35:25,878 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:25,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:25,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1584379006, now seen corresponding path program 23 times [2021-03-24 22:35:25,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:25,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172340303] [2021-03-24 22:35:25,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:25,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:25,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:25,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:25,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:25,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:25,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:25,909 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:25,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:25,922 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:25,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:25,941 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:25,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:25,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172340303] [2021-03-24 22:35:25,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:25,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:25,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895101577] [2021-03-24 22:35:25,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:25,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:25,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:25,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:25,960 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:25,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 102 transitions, 2409 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:25,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:25,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:25,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:26,083 INFO L129 PetriNetUnfolder]: 17/423 cut-off events. [2021-03-24 22:35:26,083 INFO L130 PetriNetUnfolder]: For 6847/6957 co-relation queries the response was YES. [2021-03-24 22:35:26,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2480 conditions, 423 events. 17/423 cut-off events. For 6847/6957 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4112 event pairs, 17 based on Foata normal form. 8/414 useless extension candidates. Maximal degree in co-relation 2427. Up to 90 conditions per place. [2021-03-24 22:35:26,086 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 57 selfloop transitions, 38 changer transitions 2/107 dead transitions. [2021-03-24 22:35:26,086 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 107 transitions, 2664 flow [2021-03-24 22:35:26,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:26,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:26,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:26,088 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:26,088 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:26,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:26,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:26,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:26,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:26,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:26,089 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:26,089 INFO L185 Difference]: Start difference. First operand has 143 places, 102 transitions, 2409 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:26,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 107 transitions, 2664 flow [2021-03-24 22:35:26,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 107 transitions, 2579 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:26,119 INFO L241 Difference]: Finished difference. Result has 145 places, 102 transitions, 2410 flow [2021-03-24 22:35:26,119 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2332, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2410, PETRI_PLACES=145, PETRI_TRANSITIONS=102} [2021-03-24 22:35:26,120 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 113 predicate places. [2021-03-24 22:35:26,120 INFO L480 AbstractCegarLoop]: Abstraction has has 145 places, 102 transitions, 2410 flow [2021-03-24 22:35:26,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:26,120 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:26,120 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:26,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-24 22:35:26,120 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:26,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:26,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1796092904, now seen corresponding path program 24 times [2021-03-24 22:35:26,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:26,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464310802] [2021-03-24 22:35:26,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:26,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:26,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:26,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:26,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:26,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:26,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:26,158 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:26,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:26,182 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:26,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:26,201 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:26,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:26,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:26,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464310802] [2021-03-24 22:35:26,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:26,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:26,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538647526] [2021-03-24 22:35:26,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:26,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:26,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:26,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:26,220 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:26,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 102 transitions, 2410 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:26,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:26,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:26,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:26,320 INFO L129 PetriNetUnfolder]: 17/416 cut-off events. [2021-03-24 22:35:26,320 INFO L130 PetriNetUnfolder]: For 6840/6953 co-relation queries the response was YES. [2021-03-24 22:35:26,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 416 events. 17/416 cut-off events. For 6840/6953 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4022 event pairs, 17 based on Foata normal form. 8/408 useless extension candidates. Maximal degree in co-relation 2395. Up to 90 conditions per place. [2021-03-24 22:35:26,323 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 49 selfloop transitions, 44 changer transitions 2/105 dead transitions. [2021-03-24 22:35:26,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 105 transitions, 2612 flow [2021-03-24 22:35:26,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:26,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:26,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:26,324 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:26,324 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:26,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:26,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:26,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:26,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:26,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:26,327 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:26,327 INFO L185 Difference]: Start difference. First operand has 145 places, 102 transitions, 2410 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:26,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 105 transitions, 2612 flow [2021-03-24 22:35:26,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 105 transitions, 2535 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:26,359 INFO L241 Difference]: Finished difference. Result has 147 places, 100 transitions, 2363 flow [2021-03-24 22:35:26,360 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2339, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2363, PETRI_PLACES=147, PETRI_TRANSITIONS=100} [2021-03-24 22:35:26,360 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 115 predicate places. [2021-03-24 22:35:26,360 INFO L480 AbstractCegarLoop]: Abstraction has has 147 places, 100 transitions, 2363 flow [2021-03-24 22:35:26,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:26,360 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:26,360 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:26,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-24 22:35:26,360 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:26,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:26,361 INFO L82 PathProgramCache]: Analyzing trace with hash 2039164828, now seen corresponding path program 25 times [2021-03-24 22:35:26,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:26,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94335806] [2021-03-24 22:35:26,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:26,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:26,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:26,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:26,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:26,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:26,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:26,390 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:26,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:26,404 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:26,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:26,424 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:26,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:26,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:26,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94335806] [2021-03-24 22:35:26,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:26,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:26,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574259341] [2021-03-24 22:35:26,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:26,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:26,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:26,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:26,443 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:26,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 100 transitions, 2363 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:26,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:26,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:26,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:26,547 INFO L129 PetriNetUnfolder]: 17/409 cut-off events. [2021-03-24 22:35:26,547 INFO L130 PetriNetUnfolder]: For 6685/6798 co-relation queries the response was YES. [2021-03-24 22:35:26,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2418 conditions, 409 events. 17/409 cut-off events. For 6685/6798 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3932 event pairs, 17 based on Foata normal form. 8/401 useless extension candidates. Maximal degree in co-relation 2365. Up to 90 conditions per place. [2021-03-24 22:35:26,556 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 46 selfloop transitions, 44 changer transitions 3/103 dead transitions. [2021-03-24 22:35:26,557 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 103 transitions, 2561 flow [2021-03-24 22:35:26,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:26,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:26,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:26,558 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:26,558 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:26,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:26,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:26,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:26,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:26,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:26,559 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:26,559 INFO L185 Difference]: Start difference. First operand has 147 places, 100 transitions, 2363 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:26,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 103 transitions, 2561 flow [2021-03-24 22:35:26,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 103 transitions, 2468 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:26,587 INFO L241 Difference]: Finished difference. Result has 148 places, 97 transitions, 2273 flow [2021-03-24 22:35:26,587 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2276, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2273, PETRI_PLACES=148, PETRI_TRANSITIONS=97} [2021-03-24 22:35:26,589 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 116 predicate places. [2021-03-24 22:35:26,589 INFO L480 AbstractCegarLoop]: Abstraction has has 148 places, 97 transitions, 2273 flow [2021-03-24 22:35:26,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:26,589 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:26,589 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:26,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-24 22:35:26,589 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:26,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:26,590 INFO L82 PathProgramCache]: Analyzing trace with hash 399743908, now seen corresponding path program 26 times [2021-03-24 22:35:26,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:26,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305048799] [2021-03-24 22:35:26,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:26,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:26,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:26,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:26,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:26,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:26,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:26,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:26,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 22:35:26,628 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:26,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:26,647 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:26,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:26,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:26,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305048799] [2021-03-24 22:35:26,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:26,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:26,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66202333] [2021-03-24 22:35:26,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:26,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:26,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:26,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:26,666 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:26,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 97 transitions, 2273 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:26,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:26,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:26,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:26,773 INFO L129 PetriNetUnfolder]: 17/400 cut-off events. [2021-03-24 22:35:26,773 INFO L130 PetriNetUnfolder]: For 6295/6411 co-relation queries the response was YES. [2021-03-24 22:35:26,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2348 conditions, 400 events. 17/400 cut-off events. For 6295/6411 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3807 event pairs, 17 based on Foata normal form. 9/392 useless extension candidates. Maximal degree in co-relation 2296. Up to 87 conditions per place. [2021-03-24 22:35:26,776 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 58 selfloop transitions, 36 changer transitions 2/106 dead transitions. [2021-03-24 22:35:26,776 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 106 transitions, 2642 flow [2021-03-24 22:35:26,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:26,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:26,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:26,777 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:26,777 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:26,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:26,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:26,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:26,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:26,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:26,779 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:26,779 INFO L185 Difference]: Start difference. First operand has 148 places, 97 transitions, 2273 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:26,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 106 transitions, 2642 flow [2021-03-24 22:35:26,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 106 transitions, 2449 flow, removed 12 selfloop flow, removed 10 redundant places. [2021-03-24 22:35:26,804 INFO L241 Difference]: Finished difference. Result has 143 places, 97 transitions, 2185 flow [2021-03-24 22:35:26,804 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2100, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2185, PETRI_PLACES=143, PETRI_TRANSITIONS=97} [2021-03-24 22:35:26,804 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 111 predicate places. [2021-03-24 22:35:26,805 INFO L480 AbstractCegarLoop]: Abstraction has has 143 places, 97 transitions, 2185 flow [2021-03-24 22:35:26,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:26,805 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:26,805 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:26,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-24 22:35:26,805 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:26,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:26,805 INFO L82 PathProgramCache]: Analyzing trace with hash 598474238, now seen corresponding path program 27 times [2021-03-24 22:35:26,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:26,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168102316] [2021-03-24 22:35:26,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:26,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:26,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:26,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:26,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:26,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:26,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:26,836 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:26,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:26,854 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:26,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:26,873 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:26,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:26,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:26,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168102316] [2021-03-24 22:35:26,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:26,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:26,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350137412] [2021-03-24 22:35:26,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:26,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:26,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:26,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:26,893 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:26,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 97 transitions, 2185 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:26,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:26,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:26,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:26,994 INFO L129 PetriNetUnfolder]: 17/393 cut-off events. [2021-03-24 22:35:26,994 INFO L130 PetriNetUnfolder]: For 5669/5790 co-relation queries the response was YES. [2021-03-24 22:35:26,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2252 conditions, 393 events. 17/393 cut-off events. For 5669/5790 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3713 event pairs, 17 based on Foata normal form. 8/385 useless extension candidates. Maximal degree in co-relation 2204. Up to 87 conditions per place. [2021-03-24 22:35:26,996 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 56 selfloop transitions, 36 changer transitions 2/104 dead transitions. [2021-03-24 22:35:26,996 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 104 transitions, 2482 flow [2021-03-24 22:35:26,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:26,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:26,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:26,998 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:26,998 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:26,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:26,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:26,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:26,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:26,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,000 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,000 INFO L185 Difference]: Start difference. First operand has 143 places, 97 transitions, 2185 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:27,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 104 transitions, 2482 flow [2021-03-24 22:35:27,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 104 transitions, 2410 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:27,023 INFO L241 Difference]: Finished difference. Result has 146 places, 99 transitions, 2257 flow [2021-03-24 22:35:27,023 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2257, PETRI_PLACES=146, PETRI_TRANSITIONS=99} [2021-03-24 22:35:27,023 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 114 predicate places. [2021-03-24 22:35:27,023 INFO L480 AbstractCegarLoop]: Abstraction has has 146 places, 99 transitions, 2257 flow [2021-03-24 22:35:27,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,023 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:27,023 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:27,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-24 22:35:27,024 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:27,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:27,024 INFO L82 PathProgramCache]: Analyzing trace with hash 101524980, now seen corresponding path program 28 times [2021-03-24 22:35:27,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:27,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103846900] [2021-03-24 22:35:27,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:27,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:27,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:27,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:27,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:27,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:27,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:27,052 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:27,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:27,066 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:27,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:27,084 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:27,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:27,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:27,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103846900] [2021-03-24 22:35:27,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:27,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:27,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582486022] [2021-03-24 22:35:27,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:27,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:27,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:27,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:27,104 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:27,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 99 transitions, 2257 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,105 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:27,105 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:27,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:27,208 INFO L129 PetriNetUnfolder]: 17/386 cut-off events. [2021-03-24 22:35:27,208 INFO L130 PetriNetUnfolder]: For 5810/5926 co-relation queries the response was YES. [2021-03-24 22:35:27,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2239 conditions, 386 events. 17/386 cut-off events. For 5810/5926 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3617 event pairs, 17 based on Foata normal form. 8/378 useless extension candidates. Maximal degree in co-relation 2190. Up to 87 conditions per place. [2021-03-24 22:35:27,211 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 53 selfloop transitions, 36 changer transitions 3/102 dead transitions. [2021-03-24 22:35:27,211 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 102 transitions, 2453 flow [2021-03-24 22:35:27,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:27,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:27,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:27,212 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:27,213 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:27,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:27,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:27,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:27,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,220 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,221 INFO L185 Difference]: Start difference. First operand has 146 places, 99 transitions, 2257 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:27,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 102 transitions, 2453 flow [2021-03-24 22:35:27,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 102 transitions, 2390 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:27,244 INFO L241 Difference]: Finished difference. Result has 148 places, 96 transitions, 2193 flow [2021-03-24 22:35:27,244 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2200, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2193, PETRI_PLACES=148, PETRI_TRANSITIONS=96} [2021-03-24 22:35:27,244 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 116 predicate places. [2021-03-24 22:35:27,244 INFO L480 AbstractCegarLoop]: Abstraction has has 148 places, 96 transitions, 2193 flow [2021-03-24 22:35:27,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,245 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:27,245 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:27,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-24 22:35:27,245 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:27,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:27,246 INFO L82 PathProgramCache]: Analyzing trace with hash 59278978, now seen corresponding path program 29 times [2021-03-24 22:35:27,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:27,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288058814] [2021-03-24 22:35:27,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:27,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:27,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:27,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:27,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:27,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:27,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:27,270 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:27,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:27,283 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:27,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:27,302 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:27,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:27,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:27,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288058814] [2021-03-24 22:35:27,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:27,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:27,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857732453] [2021-03-24 22:35:27,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:27,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:27,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:27,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:27,322 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:27,322 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 96 transitions, 2193 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,322 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:27,322 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:27,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:27,421 INFO L129 PetriNetUnfolder]: 17/378 cut-off events. [2021-03-24 22:35:27,422 INFO L130 PetriNetUnfolder]: For 5604/5723 co-relation queries the response was YES. [2021-03-24 22:35:27,423 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2212 conditions, 378 events. 17/378 cut-off events. For 5604/5723 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3509 event pairs, 17 based on Foata normal form. 9/371 useless extension candidates. Maximal degree in co-relation 2164. Up to 87 conditions per place. [2021-03-24 22:35:27,424 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 53 selfloop transitions, 33 changer transitions 3/99 dead transitions. [2021-03-24 22:35:27,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 99 transitions, 2383 flow [2021-03-24 22:35:27,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:27,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:27,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:27,425 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:27,425 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:27,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:27,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:27,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:27,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,427 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,427 INFO L185 Difference]: Start difference. First operand has 148 places, 96 transitions, 2193 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:27,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 99 transitions, 2383 flow [2021-03-24 22:35:27,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 99 transitions, 2311 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:27,449 INFO L241 Difference]: Finished difference. Result has 150 places, 93 transitions, 2115 flow [2021-03-24 22:35:27,450 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2127, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2115, PETRI_PLACES=150, PETRI_TRANSITIONS=93} [2021-03-24 22:35:27,450 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 118 predicate places. [2021-03-24 22:35:27,450 INFO L480 AbstractCegarLoop]: Abstraction has has 150 places, 93 transitions, 2115 flow [2021-03-24 22:35:27,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,451 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:27,451 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:27,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-24 22:35:27,451 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:27,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:27,451 INFO L82 PathProgramCache]: Analyzing trace with hash 839613698, now seen corresponding path program 30 times [2021-03-24 22:35:27,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:27,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639621624] [2021-03-24 22:35:27,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:27,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:27,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:27,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:27,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:27,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:27,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:27,487 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:27,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:27,508 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:27,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:27,528 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:27,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:27,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:27,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639621624] [2021-03-24 22:35:27,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:27,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:27,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590810653] [2021-03-24 22:35:27,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:27,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:27,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:27,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:27,555 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:27,555 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 93 transitions, 2115 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:27,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:27,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:27,660 INFO L129 PetriNetUnfolder]: 14/442 cut-off events. [2021-03-24 22:35:27,661 INFO L130 PetriNetUnfolder]: For 5979/6016 co-relation queries the response was YES. [2021-03-24 22:35:27,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2423 conditions, 442 events. 14/442 cut-off events. For 5979/6016 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4400 event pairs, 5 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 2375. Up to 96 conditions per place. [2021-03-24 22:35:27,663 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 62 selfloop transitions, 47 changer transitions 2/121 dead transitions. [2021-03-24 22:35:27,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 121 transitions, 2929 flow [2021-03-24 22:35:27,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:27,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:27,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:27,666 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:27,666 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:27,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:27,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:27,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:27,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,669 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,669 INFO L185 Difference]: Start difference. First operand has 150 places, 93 transitions, 2115 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:27,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 121 transitions, 2929 flow [2021-03-24 22:35:27,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 121 transitions, 2775 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-03-24 22:35:27,696 INFO L241 Difference]: Finished difference. Result has 154 places, 99 transitions, 2315 flow [2021-03-24 22:35:27,696 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2006, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2315, PETRI_PLACES=154, PETRI_TRANSITIONS=99} [2021-03-24 22:35:27,696 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 122 predicate places. [2021-03-24 22:35:27,696 INFO L480 AbstractCegarLoop]: Abstraction has has 154 places, 99 transitions, 2315 flow [2021-03-24 22:35:27,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,697 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:27,697 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:27,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-24 22:35:27,697 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:27,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:27,697 INFO L82 PathProgramCache]: Analyzing trace with hash -457408890, now seen corresponding path program 31 times [2021-03-24 22:35:27,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:27,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79651477] [2021-03-24 22:35:27,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:27,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:27,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:27,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:27,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:27,716 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:27,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:27,732 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:27,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:27,753 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:27,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:27,773 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:27,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:27,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:27,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79651477] [2021-03-24 22:35:27,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:27,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:27,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154490908] [2021-03-24 22:35:27,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:27,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:27,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:27,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:27,794 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:27,794 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 99 transitions, 2315 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,794 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:27,794 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:27,795 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:27,897 INFO L129 PetriNetUnfolder]: 13/482 cut-off events. [2021-03-24 22:35:27,897 INFO L130 PetriNetUnfolder]: For 7112/7124 co-relation queries the response was YES. [2021-03-24 22:35:27,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2685 conditions, 482 events. 13/482 cut-off events. For 7112/7124 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4930 event pairs, 2 based on Foata normal form. 2/474 useless extension candidates. Maximal degree in co-relation 2634. Up to 110 conditions per place. [2021-03-24 22:35:27,899 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 73 selfloop transitions, 47 changer transitions 2/132 dead transitions. [2021-03-24 22:35:27,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 132 transitions, 3247 flow [2021-03-24 22:35:27,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:27,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:27,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:27,900 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:27,901 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:27,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:27,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:27,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:27,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,902 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,902 INFO L185 Difference]: Start difference. First operand has 154 places, 99 transitions, 2315 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:27,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 132 transitions, 3247 flow [2021-03-24 22:35:27,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 132 transitions, 3194 flow, removed 11 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:27,931 INFO L241 Difference]: Finished difference. Result has 161 places, 108 transitions, 2656 flow [2021-03-24 22:35:27,931 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2285, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2656, PETRI_PLACES=161, PETRI_TRANSITIONS=108} [2021-03-24 22:35:27,931 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 129 predicate places. [2021-03-24 22:35:27,931 INFO L480 AbstractCegarLoop]: Abstraction has has 161 places, 108 transitions, 2656 flow [2021-03-24 22:35:27,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:27,932 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:27,932 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:27,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-24 22:35:27,932 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:27,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:27,932 INFO L82 PathProgramCache]: Analyzing trace with hash -162039226, now seen corresponding path program 32 times [2021-03-24 22:35:27,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:27,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097317086] [2021-03-24 22:35:27,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:27,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:27,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:27,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:27,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:27,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:27,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:27,962 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:27,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:27,982 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:27,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:28,002 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:28,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:28,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:28,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097317086] [2021-03-24 22:35:28,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:28,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:28,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272221821] [2021-03-24 22:35:28,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:28,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:28,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:28,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:28,020 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:28,021 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 108 transitions, 2656 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:28,021 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:28,021 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:28,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:28,124 INFO L129 PetriNetUnfolder]: 10/504 cut-off events. [2021-03-24 22:35:28,124 INFO L130 PetriNetUnfolder]: For 8351/8371 co-relation queries the response was YES. [2021-03-24 22:35:28,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2899 conditions, 504 events. 10/504 cut-off events. For 8351/8371 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5250 event pairs, 6 based on Foata normal form. 2/497 useless extension candidates. Maximal degree in co-relation 2845. Up to 110 conditions per place. [2021-03-24 22:35:28,127 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 70 selfloop transitions, 56 changer transitions 2/138 dead transitions. [2021-03-24 22:35:28,128 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 138 transitions, 3568 flow [2021-03-24 22:35:28,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:28,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:28,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:28,129 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:28,129 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:28,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:28,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:28,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:28,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:28,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:28,130 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:28,130 INFO L185 Difference]: Start difference. First operand has 161 places, 108 transitions, 2656 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:28,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 138 transitions, 3568 flow [2021-03-24 22:35:28,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 138 transitions, 3477 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:28,163 INFO L241 Difference]: Finished difference. Result has 167 places, 115 transitions, 2953 flow [2021-03-24 22:35:28,164 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2597, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2953, PETRI_PLACES=167, PETRI_TRANSITIONS=115} [2021-03-24 22:35:28,164 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 135 predicate places. [2021-03-24 22:35:28,164 INFO L480 AbstractCegarLoop]: Abstraction has has 167 places, 115 transitions, 2953 flow [2021-03-24 22:35:28,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:28,164 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:28,164 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:28,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-24 22:35:28,164 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:28,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:28,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1065414172, now seen corresponding path program 33 times [2021-03-24 22:35:28,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:28,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86238713] [2021-03-24 22:35:28,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:28,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:28,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:28,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:28,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:28,183 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:28,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:28,191 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:28,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:28,204 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:28,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:28,223 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:28,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:28,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:28,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86238713] [2021-03-24 22:35:28,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:28,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:28,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095338252] [2021-03-24 22:35:28,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:28,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:28,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:28,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:28,242 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:28,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 115 transitions, 2953 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:28,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:28,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:28,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:28,349 INFO L129 PetriNetUnfolder]: 10/496 cut-off events. [2021-03-24 22:35:28,349 INFO L130 PetriNetUnfolder]: For 9381/9433 co-relation queries the response was YES. [2021-03-24 22:35:28,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2988 conditions, 496 events. 10/496 cut-off events. For 9381/9433 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5149 event pairs, 4 based on Foata normal form. 5/491 useless extension candidates. Maximal degree in co-relation 2931. Up to 95 conditions per place. [2021-03-24 22:35:28,352 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 61 selfloop transitions, 52 changer transitions 2/125 dead transitions. [2021-03-24 22:35:28,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 125 transitions, 3357 flow [2021-03-24 22:35:28,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:28,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:28,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:28,353 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:28,353 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:28,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:28,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:28,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:28,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:28,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:28,354 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:28,354 INFO L185 Difference]: Start difference. First operand has 167 places, 115 transitions, 2953 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:28,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 125 transitions, 3357 flow [2021-03-24 22:35:28,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 125 transitions, 3301 flow, removed 13 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:28,390 INFO L241 Difference]: Finished difference. Result has 171 places, 115 transitions, 3028 flow [2021-03-24 22:35:28,391 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2903, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3028, PETRI_PLACES=171, PETRI_TRANSITIONS=115} [2021-03-24 22:35:28,391 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 139 predicate places. [2021-03-24 22:35:28,391 INFO L480 AbstractCegarLoop]: Abstraction has has 171 places, 115 transitions, 3028 flow [2021-03-24 22:35:28,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:28,391 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:28,391 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:28,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-24 22:35:28,391 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:28,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:28,392 INFO L82 PathProgramCache]: Analyzing trace with hash -379426554, now seen corresponding path program 34 times [2021-03-24 22:35:28,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:28,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654927078] [2021-03-24 22:35:28,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:28,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:28,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:28,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:28,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:28,405 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:28,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:28,414 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:28,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:28,426 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:28,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:28,445 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:28,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:28,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654927078] [2021-03-24 22:35:28,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:28,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:28,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249658830] [2021-03-24 22:35:28,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:28,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:28,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:28,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:28,464 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:28,464 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 115 transitions, 3028 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:28,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:28,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:28,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:28,610 INFO L129 PetriNetUnfolder]: 10/491 cut-off events. [2021-03-24 22:35:28,610 INFO L130 PetriNetUnfolder]: For 9846/9924 co-relation queries the response was YES. [2021-03-24 22:35:28,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3030 conditions, 491 events. 10/491 cut-off events. For 9846/9924 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5072 event pairs, 4 based on Foata normal form. 12/494 useless extension candidates. Maximal degree in co-relation 2973. Up to 95 conditions per place. [2021-03-24 22:35:28,612 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 61 selfloop transitions, 51 changer transitions 1/123 dead transitions. [2021-03-24 22:35:28,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 123 transitions, 3377 flow [2021-03-24 22:35:28,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:28,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:28,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:28,613 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:28,613 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:28,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:28,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:28,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:28,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:28,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:28,615 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:28,615 INFO L185 Difference]: Start difference. First operand has 171 places, 115 transitions, 3028 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:28,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 123 transitions, 3377 flow [2021-03-24 22:35:28,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 123 transitions, 3262 flow, removed 21 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:28,650 INFO L241 Difference]: Finished difference. Result has 173 places, 115 transitions, 3032 flow [2021-03-24 22:35:28,650 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2925, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3032, PETRI_PLACES=173, PETRI_TRANSITIONS=115} [2021-03-24 22:35:28,650 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 141 predicate places. [2021-03-24 22:35:28,650 INFO L480 AbstractCegarLoop]: Abstraction has has 173 places, 115 transitions, 3032 flow [2021-03-24 22:35:28,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:28,650 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:28,650 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:28,651 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-24 22:35:28,651 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:28,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:28,651 INFO L82 PathProgramCache]: Analyzing trace with hash 413059018, now seen corresponding path program 35 times [2021-03-24 22:35:28,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:28,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287208785] [2021-03-24 22:35:28,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:28,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:28,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:28,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:28,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:28,665 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:28,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:28,674 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:28,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:28,687 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:28,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:28,704 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:28,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:28,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287208785] [2021-03-24 22:35:28,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:28,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:28,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822513693] [2021-03-24 22:35:28,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:28,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:28,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:28,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:28,725 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:28,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 115 transitions, 3032 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:28,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:28,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:28,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:28,848 INFO L129 PetriNetUnfolder]: 10/486 cut-off events. [2021-03-24 22:35:28,848 INFO L130 PetriNetUnfolder]: For 9648/9726 co-relation queries the response was YES. [2021-03-24 22:35:28,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3013 conditions, 486 events. 10/486 cut-off events. For 9648/9726 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5010 event pairs, 4 based on Foata normal form. 12/489 useless extension candidates. Maximal degree in co-relation 2956. Up to 95 conditions per place. [2021-03-24 22:35:28,852 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 61 selfloop transitions, 50 changer transitions 1/122 dead transitions. [2021-03-24 22:35:28,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 122 transitions, 3347 flow [2021-03-24 22:35:28,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:28,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:28,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:28,857 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:28,857 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:28,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:28,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:28,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:28,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:28,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:28,863 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:28,863 INFO L185 Difference]: Start difference. First operand has 173 places, 115 transitions, 3032 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:28,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 122 transitions, 3347 flow [2021-03-24 22:35:28,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 122 transitions, 3286 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:28,902 INFO L241 Difference]: Finished difference. Result has 176 places, 115 transitions, 3075 flow [2021-03-24 22:35:28,902 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2977, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3075, PETRI_PLACES=176, PETRI_TRANSITIONS=115} [2021-03-24 22:35:28,902 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 144 predicate places. [2021-03-24 22:35:28,902 INFO L480 AbstractCegarLoop]: Abstraction has has 176 places, 115 transitions, 3075 flow [2021-03-24 22:35:28,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:28,902 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:28,903 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:28,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-24 22:35:28,903 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:28,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:28,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1702322208, now seen corresponding path program 36 times [2021-03-24 22:35:28,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:28,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276913260] [2021-03-24 22:35:28,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:28,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:28,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:28,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:28,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:28,917 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:28,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:28,926 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:28,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:28,939 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:28,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:28,956 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:28,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:28,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:28,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276913260] [2021-03-24 22:35:28,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:28,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:28,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480659489] [2021-03-24 22:35:28,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:28,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:28,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:28,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:28,975 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:28,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 115 transitions, 3075 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:28,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:28,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:28,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:29,094 INFO L129 PetriNetUnfolder]: 10/482 cut-off events. [2021-03-24 22:35:29,094 INFO L130 PetriNetUnfolder]: For 9718/9770 co-relation queries the response was YES. [2021-03-24 22:35:29,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3037 conditions, 482 events. 10/482 cut-off events. For 9718/9770 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4956 event pairs, 4 based on Foata normal form. 5/478 useless extension candidates. Maximal degree in co-relation 2979. Up to 95 conditions per place. [2021-03-24 22:35:29,097 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 60 selfloop transitions, 50 changer transitions 1/121 dead transitions. [2021-03-24 22:35:29,097 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 121 transitions, 3363 flow [2021-03-24 22:35:29,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:29,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:29,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:29,098 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:29,099 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:29,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:29,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:29,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:29,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:29,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:29,100 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:29,100 INFO L185 Difference]: Start difference. First operand has 176 places, 115 transitions, 3075 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:29,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 121 transitions, 3363 flow [2021-03-24 22:35:29,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 121 transitions, 3223 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:29,137 INFO L241 Difference]: Finished difference. Result has 177 places, 115 transitions, 3052 flow [2021-03-24 22:35:29,137 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2941, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3052, PETRI_PLACES=177, PETRI_TRANSITIONS=115} [2021-03-24 22:35:29,137 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 145 predicate places. [2021-03-24 22:35:29,137 INFO L480 AbstractCegarLoop]: Abstraction has has 177 places, 115 transitions, 3052 flow [2021-03-24 22:35:29,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:29,137 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:29,137 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:29,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-24 22:35:29,138 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:29,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:29,138 INFO L82 PathProgramCache]: Analyzing trace with hash 729602336, now seen corresponding path program 37 times [2021-03-24 22:35:29,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:29,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899741374] [2021-03-24 22:35:29,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:29,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:29,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:29,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:29,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:29,152 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:29,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:29,167 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:29,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:29,186 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:29,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:29,205 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:29,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:29,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:29,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899741374] [2021-03-24 22:35:29,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:29,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:29,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750105354] [2021-03-24 22:35:29,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:29,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:29,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:29,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:29,224 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:29,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 115 transitions, 3052 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:29,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:29,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:29,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:29,323 INFO L129 PetriNetUnfolder]: 10/477 cut-off events. [2021-03-24 22:35:29,323 INFO L130 PetriNetUnfolder]: For 9812/9882 co-relation queries the response was YES. [2021-03-24 22:35:29,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3010 conditions, 477 events. 10/477 cut-off events. For 9812/9882 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4883 event pairs, 4 based on Foata normal form. 7/476 useless extension candidates. Maximal degree in co-relation 2951. Up to 109 conditions per place. [2021-03-24 22:35:29,325 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 71 selfloop transitions, 52 changer transitions 5/138 dead transitions. [2021-03-24 22:35:29,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 138 transitions, 3862 flow [2021-03-24 22:35:29,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:29,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:29,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:29,329 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:29,329 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:29,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:29,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:29,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:29,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:29,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:29,330 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:29,330 INFO L185 Difference]: Start difference. First operand has 177 places, 115 transitions, 3052 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:29,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 138 transitions, 3862 flow [2021-03-24 22:35:29,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 138 transitions, 3760 flow, removed 13 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:29,368 INFO L241 Difference]: Finished difference. Result has 183 places, 120 transitions, 3283 flow [2021-03-24 22:35:29,368 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2974, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3283, PETRI_PLACES=183, PETRI_TRANSITIONS=120} [2021-03-24 22:35:29,369 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 151 predicate places. [2021-03-24 22:35:29,369 INFO L480 AbstractCegarLoop]: Abstraction has has 183 places, 120 transitions, 3283 flow [2021-03-24 22:35:29,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:29,369 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:29,369 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:29,369 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-24 22:35:29,369 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:29,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:29,369 INFO L82 PathProgramCache]: Analyzing trace with hash 2087269092, now seen corresponding path program 38 times [2021-03-24 22:35:29,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:29,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537551228] [2021-03-24 22:35:29,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:29,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:29,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:29,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:29,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:29,387 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:29,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:29,396 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:29,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:29,408 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:29,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:29,426 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:29,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:29,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537551228] [2021-03-24 22:35:29,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:29,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:29,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363783370] [2021-03-24 22:35:29,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:29,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:29,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:29,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:29,444 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:29,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 120 transitions, 3283 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:29,445 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:29,445 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:29,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:29,570 INFO L129 PetriNetUnfolder]: 10/463 cut-off events. [2021-03-24 22:35:29,571 INFO L130 PetriNetUnfolder]: For 10181/10251 co-relation queries the response was YES. [2021-03-24 22:35:29,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2980 conditions, 463 events. 10/463 cut-off events. For 10181/10251 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4711 event pairs, 4 based on Foata normal form. 8/463 useless extension candidates. Maximal degree in co-relation 2917. Up to 94 conditions per place. [2021-03-24 22:35:29,573 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 62 selfloop transitions, 49 changer transitions 3/124 dead transitions. [2021-03-24 22:35:29,573 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 124 transitions, 3537 flow [2021-03-24 22:35:29,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:29,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:29,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:29,574 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:29,574 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:29,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:29,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:29,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:29,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:29,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:29,577 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:29,577 INFO L185 Difference]: Start difference. First operand has 183 places, 120 transitions, 3283 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:29,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 124 transitions, 3537 flow [2021-03-24 22:35:29,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 124 transitions, 3453 flow, removed 27 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:29,620 INFO L241 Difference]: Finished difference. Result has 186 places, 117 transitions, 3201 flow [2021-03-24 22:35:29,620 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3205, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3201, PETRI_PLACES=186, PETRI_TRANSITIONS=117} [2021-03-24 22:35:29,621 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 154 predicate places. [2021-03-24 22:35:29,621 INFO L480 AbstractCegarLoop]: Abstraction has has 186 places, 117 transitions, 3201 flow [2021-03-24 22:35:29,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:29,621 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:29,621 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:29,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-24 22:35:29,622 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:29,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:29,622 INFO L82 PathProgramCache]: Analyzing trace with hash -709222330, now seen corresponding path program 39 times [2021-03-24 22:35:29,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:29,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493898880] [2021-03-24 22:35:29,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:29,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:29,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:29,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:29,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:29,648 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:29,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:29,664 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:29,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:29,677 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:29,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:29,695 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:29,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:29,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:29,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493898880] [2021-03-24 22:35:29,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:29,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:29,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365816279] [2021-03-24 22:35:29,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:29,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:29,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:29,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:29,715 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:29,715 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 117 transitions, 3201 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:29,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:29,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:29,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:29,830 INFO L129 PetriNetUnfolder]: 10/450 cut-off events. [2021-03-24 22:35:29,830 INFO L130 PetriNetUnfolder]: For 9608/9641 co-relation queries the response was YES. [2021-03-24 22:35:29,831 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2901 conditions, 450 events. 10/450 cut-off events. For 9608/9641 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4537 event pairs, 4 based on Foata normal form. 5/449 useless extension candidates. Maximal degree in co-relation 2839. Up to 104 conditions per place. [2021-03-24 22:35:29,832 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 64 selfloop transitions, 52 changer transitions 2/128 dead transitions. [2021-03-24 22:35:29,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 128 transitions, 3667 flow [2021-03-24 22:35:29,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:29,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:29,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:29,833 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:29,833 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:29,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:29,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:29,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:29,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:29,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:29,835 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:29,835 INFO L185 Difference]: Start difference. First operand has 186 places, 117 transitions, 3201 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:29,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 128 transitions, 3667 flow [2021-03-24 22:35:29,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 128 transitions, 3566 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-24 22:35:29,874 INFO L241 Difference]: Finished difference. Result has 187 places, 121 transitions, 3376 flow [2021-03-24 22:35:29,874 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3111, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3376, PETRI_PLACES=187, PETRI_TRANSITIONS=121} [2021-03-24 22:35:29,876 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 155 predicate places. [2021-03-24 22:35:29,876 INFO L480 AbstractCegarLoop]: Abstraction has has 187 places, 121 transitions, 3376 flow [2021-03-24 22:35:29,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:29,876 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:29,876 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:29,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-24 22:35:29,876 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:29,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:29,876 INFO L82 PathProgramCache]: Analyzing trace with hash 2107271776, now seen corresponding path program 40 times [2021-03-24 22:35:29,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:29,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065215261] [2021-03-24 22:35:29,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:29,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:29,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:29,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:29,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:29,896 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:29,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:29,911 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:29,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:29,924 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:29,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:29,942 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:29,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:29,957 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 22:35:29,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065215261] [2021-03-24 22:35:29,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:29,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:29,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487947384] [2021-03-24 22:35:29,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:29,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:29,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:29,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:29,959 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:29,959 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 121 transitions, 3376 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:29,959 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:29,959 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:29,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:30,045 INFO L129 PetriNetUnfolder]: 10/445 cut-off events. [2021-03-24 22:35:30,045 INFO L130 PetriNetUnfolder]: For 9807/9840 co-relation queries the response was YES. [2021-03-24 22:35:30,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2911 conditions, 445 events. 10/445 cut-off events. For 9807/9840 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4459 event pairs, 4 based on Foata normal form. 5/445 useless extension candidates. Maximal degree in co-relation 2850. Up to 104 conditions per place. [2021-03-24 22:35:30,047 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 64 selfloop transitions, 49 changer transitions 3/126 dead transitions. [2021-03-24 22:35:30,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 126 transitions, 3648 flow [2021-03-24 22:35:30,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:30,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:30,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:30,048 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:30,048 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:30,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:30,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:30,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:30,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:30,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:30,050 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:30,050 INFO L185 Difference]: Start difference. First operand has 187 places, 121 transitions, 3376 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:30,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 126 transitions, 3648 flow [2021-03-24 22:35:30,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 126 transitions, 3558 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:30,088 INFO L241 Difference]: Finished difference. Result has 190 places, 118 transitions, 3298 flow [2021-03-24 22:35:30,088 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3292, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3298, PETRI_PLACES=190, PETRI_TRANSITIONS=118} [2021-03-24 22:35:30,088 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 158 predicate places. [2021-03-24 22:35:30,088 INFO L480 AbstractCegarLoop]: Abstraction has has 190 places, 118 transitions, 3298 flow [2021-03-24 22:35:30,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:30,088 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:30,088 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:30,089 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-24 22:35:30,089 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:30,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:30,089 INFO L82 PathProgramCache]: Analyzing trace with hash 465414300, now seen corresponding path program 41 times [2021-03-24 22:35:30,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:30,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129437034] [2021-03-24 22:35:30,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:30,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:30,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:30,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:30,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:30,105 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:30,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:30,123 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:30,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:30,144 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:30,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:30,163 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:30,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:30,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:30,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129437034] [2021-03-24 22:35:30,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:30,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:30,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178049500] [2021-03-24 22:35:30,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:30,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:30,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:30,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:30,183 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:30,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 118 transitions, 3298 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:30,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:30,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:30,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:30,279 INFO L129 PetriNetUnfolder]: 10/436 cut-off events. [2021-03-24 22:35:30,279 INFO L130 PetriNetUnfolder]: For 9644/9677 co-relation queries the response was YES. [2021-03-24 22:35:30,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2874 conditions, 436 events. 10/436 cut-off events. For 9644/9677 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4316 event pairs, 4 based on Foata normal form. 5/436 useless extension candidates. Maximal degree in co-relation 2813. Up to 104 conditions per place. [2021-03-24 22:35:30,282 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 66 selfloop transitions, 46 changer transitions 3/125 dead transitions. [2021-03-24 22:35:30,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 125 transitions, 3648 flow [2021-03-24 22:35:30,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:30,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:30,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-24 22:35:30,283 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-24 22:35:30,283 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-24 22:35:30,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-24 22:35:30,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:30,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-24 22:35:30,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:30,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:30,284 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:30,284 INFO L185 Difference]: Start difference. First operand has 190 places, 118 transitions, 3298 flow. Second operand 7 states and 306 transitions. [2021-03-24 22:35:30,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 125 transitions, 3648 flow [2021-03-24 22:35:30,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 125 transitions, 3546 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:30,322 INFO L241 Difference]: Finished difference. Result has 193 places, 117 transitions, 3302 flow [2021-03-24 22:35:30,323 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3204, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3302, PETRI_PLACES=193, PETRI_TRANSITIONS=117} [2021-03-24 22:35:30,323 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 161 predicate places. [2021-03-24 22:35:30,323 INFO L480 AbstractCegarLoop]: Abstraction has has 193 places, 117 transitions, 3302 flow [2021-03-24 22:35:30,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:30,323 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:30,323 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:30,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-24 22:35:30,323 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:30,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:30,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1757922050, now seen corresponding path program 42 times [2021-03-24 22:35:30,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:30,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390041460] [2021-03-24 22:35:30,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:30,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:30,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:30,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:30,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:30,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:30,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:30,347 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:30,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:30,369 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:30,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:30,387 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:30,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:30,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:30,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390041460] [2021-03-24 22:35:30,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:30,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:30,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321264242] [2021-03-24 22:35:30,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:30,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:30,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:30,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:30,405 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:30,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 117 transitions, 3302 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:30,406 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:30,406 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:30,406 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:30,524 INFO L129 PetriNetUnfolder]: 4/538 cut-off events. [2021-03-24 22:35:30,524 INFO L130 PetriNetUnfolder]: For 12020/12057 co-relation queries the response was YES. [2021-03-24 22:35:30,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3453 conditions, 538 events. 4/538 cut-off events. For 12020/12057 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5721 event pairs, 4 based on Foata normal form. 6/538 useless extension candidates. Maximal degree in co-relation 3391. Up to 118 conditions per place. [2021-03-24 22:35:30,527 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 86 selfloop transitions, 52 changer transitions 2/150 dead transitions. [2021-03-24 22:35:30,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 150 transitions, 4567 flow [2021-03-24 22:35:30,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:30,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:30,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:30,528 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:30,528 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:30,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:30,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:30,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:30,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:30,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:30,529 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:30,529 INFO L185 Difference]: Start difference. First operand has 193 places, 117 transitions, 3302 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:30,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 150 transitions, 4567 flow [2021-03-24 22:35:30,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 150 transitions, 4431 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:30,575 INFO L241 Difference]: Finished difference. Result has 197 places, 128 transitions, 3746 flow [2021-03-24 22:35:30,575 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3202, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3746, PETRI_PLACES=197, PETRI_TRANSITIONS=128} [2021-03-24 22:35:30,575 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 165 predicate places. [2021-03-24 22:35:30,575 INFO L480 AbstractCegarLoop]: Abstraction has has 197 places, 128 transitions, 3746 flow [2021-03-24 22:35:30,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:30,575 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:30,575 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:30,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-24 22:35:30,576 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:30,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:30,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1188715296, now seen corresponding path program 43 times [2021-03-24 22:35:30,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:30,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903249635] [2021-03-24 22:35:30,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:30,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:30,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:30,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:30,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:30,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:30,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:30,597 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:30,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:30,618 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:30,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:30,638 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:30,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:30,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903249635] [2021-03-24 22:35:30,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:30,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:30,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783494781] [2021-03-24 22:35:30,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:30,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:30,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:30,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:30,679 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:30,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 128 transitions, 3746 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:30,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:30,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:30,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:30,794 INFO L129 PetriNetUnfolder]: 4/530 cut-off events. [2021-03-24 22:35:30,795 INFO L130 PetriNetUnfolder]: For 12574/12630 co-relation queries the response was YES. [2021-03-24 22:35:30,796 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3462 conditions, 530 events. 4/530 cut-off events. For 12574/12630 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5589 event pairs, 1 based on Foata normal form. 1/525 useless extension candidates. Maximal degree in co-relation 3397. Up to 115 conditions per place. [2021-03-24 22:35:30,797 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 96 selfloop transitions, 50 changer transitions 2/158 dead transitions. [2021-03-24 22:35:30,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 158 transitions, 4842 flow [2021-03-24 22:35:30,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:30,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:30,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:30,798 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:30,798 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:30,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:30,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:30,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:30,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:30,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:30,800 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:30,800 INFO L185 Difference]: Start difference. First operand has 197 places, 128 transitions, 3746 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:30,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 158 transitions, 4842 flow [2021-03-24 22:35:30,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 158 transitions, 4760 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:30,848 INFO L241 Difference]: Finished difference. Result has 203 places, 139 transitions, 4193 flow [2021-03-24 22:35:30,848 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3685, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4193, PETRI_PLACES=203, PETRI_TRANSITIONS=139} [2021-03-24 22:35:30,849 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 171 predicate places. [2021-03-24 22:35:30,849 INFO L480 AbstractCegarLoop]: Abstraction has has 203 places, 139 transitions, 4193 flow [2021-03-24 22:35:30,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:30,849 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:30,849 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:30,849 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-24 22:35:30,849 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:30,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:30,849 INFO L82 PathProgramCache]: Analyzing trace with hash -957488872, now seen corresponding path program 44 times [2021-03-24 22:35:30,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:30,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798192053] [2021-03-24 22:35:30,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:30,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:30,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:30,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:30,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:30,863 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:30,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:30,878 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:30,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:30,900 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:30,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:30,918 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:30,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:30,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:30,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798192053] [2021-03-24 22:35:30,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:30,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:30,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596643738] [2021-03-24 22:35:30,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:30,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:30,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:30,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:30,936 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:30,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 139 transitions, 4193 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:30,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:30,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:30,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:31,072 INFO L129 PetriNetUnfolder]: 4/522 cut-off events. [2021-03-24 22:35:31,072 INFO L130 PetriNetUnfolder]: For 13409/13475 co-relation queries the response was YES. [2021-03-24 22:35:31,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3511 conditions, 522 events. 4/522 cut-off events. For 13409/13475 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5500 event pairs, 4 based on Foata normal form. 8/525 useless extension candidates. Maximal degree in co-relation 3443. Up to 117 conditions per place. [2021-03-24 22:35:31,075 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 70 selfloop transitions, 64 changer transitions 2/146 dead transitions. [2021-03-24 22:35:31,075 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 146 transitions, 4594 flow [2021-03-24 22:35:31,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:31,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:31,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:31,076 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:31,076 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:31,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:31,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:31,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:31,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:31,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:31,077 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:31,077 INFO L185 Difference]: Start difference. First operand has 203 places, 139 transitions, 4193 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:31,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 146 transitions, 4594 flow [2021-03-24 22:35:31,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 146 transitions, 4553 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:31,130 INFO L241 Difference]: Finished difference. Result has 208 places, 140 transitions, 4351 flow [2021-03-24 22:35:31,131 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4159, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4351, PETRI_PLACES=208, PETRI_TRANSITIONS=140} [2021-03-24 22:35:31,131 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 176 predicate places. [2021-03-24 22:35:31,131 INFO L480 AbstractCegarLoop]: Abstraction has has 208 places, 140 transitions, 4351 flow [2021-03-24 22:35:31,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:31,131 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:31,131 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:31,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-24 22:35:31,131 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:31,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:31,132 INFO L82 PathProgramCache]: Analyzing trace with hash 2003101314, now seen corresponding path program 45 times [2021-03-24 22:35:31,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:31,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228002151] [2021-03-24 22:35:31,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:31,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:31,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:31,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:31,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:31,157 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:31,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:31,172 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:31,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:31,194 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:31,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:31,212 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:31,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:31,230 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 22:35:31,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228002151] [2021-03-24 22:35:31,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:31,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:31,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887091849] [2021-03-24 22:35:31,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:31,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:31,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:31,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:31,232 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:31,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 140 transitions, 4351 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:31,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:31,232 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:31,232 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:31,340 INFO L129 PetriNetUnfolder]: 4/514 cut-off events. [2021-03-24 22:35:31,340 INFO L130 PetriNetUnfolder]: For 14037/14120 co-relation queries the response was YES. [2021-03-24 22:35:31,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3540 conditions, 514 events. 4/514 cut-off events. For 14037/14120 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5378 event pairs, 4 based on Foata normal form. 11/520 useless extension candidates. Maximal degree in co-relation 3471. Up to 117 conditions per place. [2021-03-24 22:35:31,343 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 69 selfloop transitions, 61 changer transitions 3/143 dead transitions. [2021-03-24 22:35:31,343 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 143 transitions, 4648 flow [2021-03-24 22:35:31,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:31,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:31,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-24 22:35:31,344 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-24 22:35:31,344 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-24 22:35:31,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-24 22:35:31,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:31,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-24 22:35:31,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:31,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:31,345 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:31,345 INFO L185 Difference]: Start difference. First operand has 208 places, 140 transitions, 4351 flow. Second operand 7 states and 306 transitions. [2021-03-24 22:35:31,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 143 transitions, 4648 flow [2021-03-24 22:35:31,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 143 transitions, 4546 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:31,399 INFO L241 Difference]: Finished difference. Result has 212 places, 138 transitions, 4313 flow [2021-03-24 22:35:31,400 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4253, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4313, PETRI_PLACES=212, PETRI_TRANSITIONS=138} [2021-03-24 22:35:31,400 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 180 predicate places. [2021-03-24 22:35:31,400 INFO L480 AbstractCegarLoop]: Abstraction has has 212 places, 138 transitions, 4313 flow [2021-03-24 22:35:31,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:31,400 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:31,400 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:31,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-24 22:35:31,400 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:31,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:31,400 INFO L82 PathProgramCache]: Analyzing trace with hash 704895976, now seen corresponding path program 46 times [2021-03-24 22:35:31,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:31,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329678257] [2021-03-24 22:35:31,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:31,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:31,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:31,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:31,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:31,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:31,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:31,426 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:31,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:31,438 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:31,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:31,456 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:31,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:31,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:31,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329678257] [2021-03-24 22:35:31,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:31,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:31,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431912359] [2021-03-24 22:35:31,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:31,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:31,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:31,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:31,474 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:31,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 138 transitions, 4313 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:31,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:31,474 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:31,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:31,594 INFO L129 PetriNetUnfolder]: 4/504 cut-off events. [2021-03-24 22:35:31,594 INFO L130 PetriNetUnfolder]: For 13719/13776 co-relation queries the response was YES. [2021-03-24 22:35:31,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3501 conditions, 504 events. 4/504 cut-off events. For 13719/13776 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5265 event pairs, 4 based on Foata normal form. 7/506 useless extension candidates. Maximal degree in co-relation 3431. Up to 115 conditions per place. [2021-03-24 22:35:31,597 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 81 selfloop transitions, 57 changer transitions 2/150 dead transitions. [2021-03-24 22:35:31,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 150 transitions, 4881 flow [2021-03-24 22:35:31,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:31,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:31,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:31,598 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:31,598 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:31,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:31,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:31,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:31,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:31,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:31,599 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:31,599 INFO L185 Difference]: Start difference. First operand has 212 places, 138 transitions, 4313 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:31,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 150 transitions, 4881 flow [2021-03-24 22:35:31,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 150 transitions, 4743 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:31,658 INFO L241 Difference]: Finished difference. Result has 214 places, 140 transitions, 4392 flow [2021-03-24 22:35:31,658 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4185, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4392, PETRI_PLACES=214, PETRI_TRANSITIONS=140} [2021-03-24 22:35:31,658 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 182 predicate places. [2021-03-24 22:35:31,658 INFO L480 AbstractCegarLoop]: Abstraction has has 214 places, 140 transitions, 4392 flow [2021-03-24 22:35:31,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:31,659 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:31,659 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:31,659 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-24 22:35:31,659 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:31,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:31,660 INFO L82 PathProgramCache]: Analyzing trace with hash -2031431656, now seen corresponding path program 47 times [2021-03-24 22:35:31,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:31,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495140983] [2021-03-24 22:35:31,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:31,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:31,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:31,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:31,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:31,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:31,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:31,685 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:31,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:31,698 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:31,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:31,727 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:31,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:31,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:31,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495140983] [2021-03-24 22:35:31,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:31,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:31,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028040834] [2021-03-24 22:35:31,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:31,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:31,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:31,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:31,745 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:31,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 140 transitions, 4392 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:31,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:31,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:31,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:31,853 INFO L129 PetriNetUnfolder]: 4/496 cut-off events. [2021-03-24 22:35:31,853 INFO L130 PetriNetUnfolder]: For 13821/13878 co-relation queries the response was YES. [2021-03-24 22:35:31,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3473 conditions, 496 events. 4/496 cut-off events. For 13821/13878 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5175 event pairs, 4 based on Foata normal form. 7/498 useless extension candidates. Maximal degree in co-relation 3402. Up to 115 conditions per place. [2021-03-24 22:35:31,855 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 80 selfloop transitions, 54 changer transitions 3/147 dead transitions. [2021-03-24 22:35:31,855 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 147 transitions, 4827 flow [2021-03-24 22:35:31,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:31,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:31,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-24 22:35:31,856 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-24 22:35:31,856 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-24 22:35:31,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-24 22:35:31,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:31,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-24 22:35:31,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:31,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:31,857 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:31,857 INFO L185 Difference]: Start difference. First operand has 214 places, 140 transitions, 4392 flow. Second operand 7 states and 306 transitions. [2021-03-24 22:35:31,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 147 transitions, 4827 flow [2021-03-24 22:35:31,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 147 transitions, 4740 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:31,897 INFO L241 Difference]: Finished difference. Result has 218 places, 138 transitions, 4360 flow [2021-03-24 22:35:31,897 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4309, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4360, PETRI_PLACES=218, PETRI_TRANSITIONS=138} [2021-03-24 22:35:31,897 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 186 predicate places. [2021-03-24 22:35:31,897 INFO L480 AbstractCegarLoop]: Abstraction has has 218 places, 138 transitions, 4360 flow [2021-03-24 22:35:31,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:31,898 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:31,898 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:31,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-24 22:35:31,898 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:31,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:31,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1086420380, now seen corresponding path program 48 times [2021-03-24 22:35:31,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:31,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739996222] [2021-03-24 22:35:31,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:31,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:31,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:31,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:31,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:31,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:31,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:31,931 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:31,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:31,956 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:31,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:31,977 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:31,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:31,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:31,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739996222] [2021-03-24 22:35:31,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:31,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:31,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206956057] [2021-03-24 22:35:31,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:31,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:31,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:31,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:31,997 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:31,998 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 138 transitions, 4360 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:31,998 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:31,998 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:31,998 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:32,117 INFO L129 PetriNetUnfolder]: 4/487 cut-off events. [2021-03-24 22:35:32,118 INFO L130 PetriNetUnfolder]: For 13711/13766 co-relation queries the response was YES. [2021-03-24 22:35:32,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3443 conditions, 487 events. 4/487 cut-off events. For 13711/13766 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5035 event pairs, 4 based on Foata normal form. 6/488 useless extension candidates. Maximal degree in co-relation 3371. Up to 115 conditions per place. [2021-03-24 22:35:32,121 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 72 selfloop transitions, 60 changer transitions 3/145 dead transitions. [2021-03-24 22:35:32,121 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 145 transitions, 4766 flow [2021-03-24 22:35:32,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:32,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:32,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:32,123 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:32,124 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:32,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:32,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:32,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:32,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:32,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:32,125 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:32,125 INFO L185 Difference]: Start difference. First operand has 218 places, 138 transitions, 4360 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:32,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 145 transitions, 4766 flow [2021-03-24 22:35:32,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 145 transitions, 4648 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:32,176 INFO L241 Difference]: Finished difference. Result has 218 places, 135 transitions, 4266 flow [2021-03-24 22:35:32,176 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4248, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4266, PETRI_PLACES=218, PETRI_TRANSITIONS=135} [2021-03-24 22:35:32,177 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 186 predicate places. [2021-03-24 22:35:32,177 INFO L480 AbstractCegarLoop]: Abstraction has has 218 places, 135 transitions, 4266 flow [2021-03-24 22:35:32,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:32,177 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:32,177 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:32,177 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-24 22:35:32,177 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:32,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:32,177 INFO L82 PathProgramCache]: Analyzing trace with hash -203140674, now seen corresponding path program 49 times [2021-03-24 22:35:32,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:32,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46332342] [2021-03-24 22:35:32,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:32,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:32,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:32,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:32,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:32,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:32,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:32,198 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:32,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:32,210 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:32,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:32,227 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:32,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:32,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46332342] [2021-03-24 22:35:32,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:32,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:32,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881664736] [2021-03-24 22:35:32,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:32,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:32,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:32,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:32,245 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:32,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 135 transitions, 4266 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:32,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:32,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:32,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:32,355 INFO L129 PetriNetUnfolder]: 4/478 cut-off events. [2021-03-24 22:35:32,355 INFO L130 PetriNetUnfolder]: For 13283/13334 co-relation queries the response was YES. [2021-03-24 22:35:32,358 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3385 conditions, 478 events. 4/478 cut-off events. For 13283/13334 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4917 event pairs, 4 based on Foata normal form. 6/479 useless extension candidates. Maximal degree in co-relation 3314. Up to 115 conditions per place. [2021-03-24 22:35:32,359 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 72 selfloop transitions, 58 changer transitions 2/142 dead transitions. [2021-03-24 22:35:32,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 142 transitions, 4666 flow [2021-03-24 22:35:32,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:32,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:32,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:32,360 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:32,360 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:32,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:32,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:32,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:32,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:32,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:32,361 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:32,361 INFO L185 Difference]: Start difference. First operand has 218 places, 135 transitions, 4266 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:32,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 142 transitions, 4666 flow [2021-03-24 22:35:32,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 142 transitions, 4558 flow, removed 11 selfloop flow, removed 6 redundant places. [2021-03-24 22:35:32,399 INFO L241 Difference]: Finished difference. Result has 218 places, 137 transitions, 4354 flow [2021-03-24 22:35:32,400 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4164, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4354, PETRI_PLACES=218, PETRI_TRANSITIONS=137} [2021-03-24 22:35:32,400 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 186 predicate places. [2021-03-24 22:35:32,400 INFO L480 AbstractCegarLoop]: Abstraction has has 218 places, 137 transitions, 4354 flow [2021-03-24 22:35:32,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:32,400 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:32,400 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:32,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-24 22:35:32,400 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:32,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:32,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1062376156, now seen corresponding path program 50 times [2021-03-24 22:35:32,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:32,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411477114] [2021-03-24 22:35:32,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:32,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:32,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:32,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:32,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:32,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:32,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:32,421 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:32,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:32,433 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:32,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:32,449 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:32,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:32,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411477114] [2021-03-24 22:35:32,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:32,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:32,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095731191] [2021-03-24 22:35:32,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:32,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:32,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:32,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:32,466 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:32,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 137 transitions, 4354 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:32,467 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:32,467 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:32,467 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:32,561 INFO L129 PetriNetUnfolder]: 4/472 cut-off events. [2021-03-24 22:35:32,561 INFO L130 PetriNetUnfolder]: For 13156/13209 co-relation queries the response was YES. [2021-03-24 22:35:32,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3373 conditions, 472 events. 4/472 cut-off events. For 13156/13209 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4835 event pairs, 4 based on Foata normal form. 7/474 useless extension candidates. Maximal degree in co-relation 3304. Up to 115 conditions per place. [2021-03-24 22:35:32,563 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 70 selfloop transitions, 56 changer transitions 4/140 dead transitions. [2021-03-24 22:35:32,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 140 transitions, 4626 flow [2021-03-24 22:35:32,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:32,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:32,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:32,564 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:32,564 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:32,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:32,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:32,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:32,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:32,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:32,565 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:32,565 INFO L185 Difference]: Start difference. First operand has 218 places, 137 transitions, 4354 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:32,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 140 transitions, 4626 flow [2021-03-24 22:35:32,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 140 transitions, 4459 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-24 22:35:32,604 INFO L241 Difference]: Finished difference. Result has 217 places, 133 transitions, 4170 flow [2021-03-24 22:35:32,605 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4193, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4170, PETRI_PLACES=217, PETRI_TRANSITIONS=133} [2021-03-24 22:35:32,605 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 185 predicate places. [2021-03-24 22:35:32,605 INFO L480 AbstractCegarLoop]: Abstraction has has 217 places, 133 transitions, 4170 flow [2021-03-24 22:35:32,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:32,605 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:32,605 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:32,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-24 22:35:32,605 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:32,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:32,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1442096254, now seen corresponding path program 51 times [2021-03-24 22:35:32,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:32,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767676734] [2021-03-24 22:35:32,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:32,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:32,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:32,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:32,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:32,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:32,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:32,626 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:32,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:32,640 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:32,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:32,656 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:32,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:32,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767676734] [2021-03-24 22:35:32,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:32,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:32,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098170595] [2021-03-24 22:35:32,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:32,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:32,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:32,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:32,682 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:32,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 133 transitions, 4170 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:32,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:32,683 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:32,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:32,788 INFO L129 PetriNetUnfolder]: 4/462 cut-off events. [2021-03-24 22:35:32,788 INFO L130 PetriNetUnfolder]: For 12548/12597 co-relation queries the response was YES. [2021-03-24 22:35:32,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3258 conditions, 462 events. 4/462 cut-off events. For 12548/12597 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4713 event pairs, 4 based on Foata normal form. 6/463 useless extension candidates. Maximal degree in co-relation 3190. Up to 109 conditions per place. [2021-03-24 22:35:32,790 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 82 selfloop transitions, 52 changer transitions 2/146 dead transitions. [2021-03-24 22:35:32,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 146 transitions, 4782 flow [2021-03-24 22:35:32,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:32,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:32,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:32,791 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:32,791 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:32,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:32,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:32,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:32,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:32,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:32,792 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:32,792 INFO L185 Difference]: Start difference. First operand has 217 places, 133 transitions, 4170 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:32,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 146 transitions, 4782 flow [2021-03-24 22:35:32,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 146 transitions, 4637 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:32,828 INFO L241 Difference]: Finished difference. Result has 219 places, 137 transitions, 4315 flow [2021-03-24 22:35:32,828 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4041, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4315, PETRI_PLACES=219, PETRI_TRANSITIONS=137} [2021-03-24 22:35:32,828 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 187 predicate places. [2021-03-24 22:35:32,828 INFO L480 AbstractCegarLoop]: Abstraction has has 219 places, 137 transitions, 4315 flow [2021-03-24 22:35:32,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:32,828 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:32,828 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:32,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-24 22:35:32,828 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:32,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:32,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1979130362, now seen corresponding path program 52 times [2021-03-24 22:35:32,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:32,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449628023] [2021-03-24 22:35:32,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:32,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:32,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:32,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:32,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:32,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:32,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:32,850 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:32,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:32,862 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:32,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:32,881 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:32,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:32,896 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 22:35:32,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449628023] [2021-03-24 22:35:32,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:32,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:32,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879337580] [2021-03-24 22:35:32,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:32,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:32,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:32,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:32,898 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:32,899 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 137 transitions, 4315 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:32,899 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:32,899 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:32,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:33,005 INFO L129 PetriNetUnfolder]: 4/454 cut-off events. [2021-03-24 22:35:33,005 INFO L130 PetriNetUnfolder]: For 12407/12456 co-relation queries the response was YES. [2021-03-24 22:35:33,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3215 conditions, 454 events. 4/454 cut-off events. For 12407/12456 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4612 event pairs, 4 based on Foata normal form. 5/454 useless extension candidates. Maximal degree in co-relation 3146. Up to 109 conditions per place. [2021-03-24 22:35:33,008 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 82 selfloop transitions, 49 changer transitions 3/144 dead transitions. [2021-03-24 22:35:33,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 144 transitions, 4711 flow [2021-03-24 22:35:33,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:33,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:33,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:33,011 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:33,011 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:33,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:33,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:33,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:33,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,012 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,012 INFO L185 Difference]: Start difference. First operand has 219 places, 137 transitions, 4315 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:33,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 144 transitions, 4711 flow [2021-03-24 22:35:33,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 144 transitions, 4654 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:33,064 INFO L241 Difference]: Finished difference. Result has 222 places, 134 transitions, 4260 flow [2021-03-24 22:35:33,065 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4264, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4260, PETRI_PLACES=222, PETRI_TRANSITIONS=134} [2021-03-24 22:35:33,065 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 190 predicate places. [2021-03-24 22:35:33,065 INFO L480 AbstractCegarLoop]: Abstraction has has 222 places, 134 transitions, 4260 flow [2021-03-24 22:35:33,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,065 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:33,065 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:33,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-24 22:35:33,065 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:33,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:33,065 INFO L82 PathProgramCache]: Analyzing trace with hash 2012160412, now seen corresponding path program 53 times [2021-03-24 22:35:33,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:33,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902664824] [2021-03-24 22:35:33,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:33,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:33,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:33,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:33,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:33,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:33,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:33,087 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:33,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:33,109 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:33,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:33,126 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:33,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:33,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:33,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902664824] [2021-03-24 22:35:33,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:33,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:33,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537923061] [2021-03-24 22:35:33,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:33,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:33,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:33,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:33,145 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:33,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 134 transitions, 4260 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:33,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:33,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:33,230 INFO L129 PetriNetUnfolder]: 4/445 cut-off events. [2021-03-24 22:35:33,230 INFO L130 PetriNetUnfolder]: For 12161/12213 co-relation queries the response was YES. [2021-03-24 22:35:33,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3202 conditions, 445 events. 4/445 cut-off events. For 12161/12213 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4492 event pairs, 4 based on Foata normal form. 5/445 useless extension candidates. Maximal degree in co-relation 3134. Up to 109 conditions per place. [2021-03-24 22:35:33,232 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 80 selfloop transitions, 48 changer transitions 3/141 dead transitions. [2021-03-24 22:35:33,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 141 transitions, 4650 flow [2021-03-24 22:35:33,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:33,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:33,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:33,233 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:33,234 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:33,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:33,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:33,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:33,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,235 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,235 INFO L185 Difference]: Start difference. First operand has 222 places, 134 transitions, 4260 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:33,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 141 transitions, 4650 flow [2021-03-24 22:35:33,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 141 transitions, 4553 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:33,272 INFO L241 Difference]: Finished difference. Result has 224 places, 131 transitions, 4164 flow [2021-03-24 22:35:33,272 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4169, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4164, PETRI_PLACES=224, PETRI_TRANSITIONS=131} [2021-03-24 22:35:33,272 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 192 predicate places. [2021-03-24 22:35:33,272 INFO L480 AbstractCegarLoop]: Abstraction has has 224 places, 131 transitions, 4164 flow [2021-03-24 22:35:33,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,272 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:33,272 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:33,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-03-24 22:35:33,273 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:33,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:33,273 INFO L82 PathProgramCache]: Analyzing trace with hash -86033836, now seen corresponding path program 54 times [2021-03-24 22:35:33,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:33,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38060978] [2021-03-24 22:35:33,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:33,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:33,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:33,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:33,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:33,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:33,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:33,293 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:33,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:33,305 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:33,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:33,321 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:33,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:33,337 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 22:35:33,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38060978] [2021-03-24 22:35:33,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:33,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:33,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615461682] [2021-03-24 22:35:33,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:33,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:33,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:33,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:33,338 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:33,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 131 transitions, 4164 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,339 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:33,339 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:33,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:33,440 INFO L129 PetriNetUnfolder]: 4/436 cut-off events. [2021-03-24 22:35:33,441 INFO L130 PetriNetUnfolder]: For 11910/11964 co-relation queries the response was YES. [2021-03-24 22:35:33,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3143 conditions, 436 events. 4/436 cut-off events. For 11910/11964 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4366 event pairs, 4 based on Foata normal form. 6/437 useless extension candidates. Maximal degree in co-relation 3075. Up to 109 conditions per place. [2021-03-24 22:35:33,442 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 76 selfloop transitions, 50 changer transitions 2/138 dead transitions. [2021-03-24 22:35:33,442 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 138 transitions, 4548 flow [2021-03-24 22:35:33,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:33,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:33,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:33,444 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:33,444 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:33,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:33,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:33,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:33,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,445 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,445 INFO L185 Difference]: Start difference. First operand has 224 places, 131 transitions, 4164 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:33,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 138 transitions, 4548 flow [2021-03-24 22:35:33,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 138 transitions, 4430 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:33,481 INFO L241 Difference]: Finished difference. Result has 225 places, 133 transitions, 4204 flow [2021-03-24 22:35:33,482 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4052, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4204, PETRI_PLACES=225, PETRI_TRANSITIONS=133} [2021-03-24 22:35:33,482 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 193 predicate places. [2021-03-24 22:35:33,482 INFO L480 AbstractCegarLoop]: Abstraction has has 225 places, 133 transitions, 4204 flow [2021-03-24 22:35:33,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,482 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:33,482 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:33,482 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-03-24 22:35:33,482 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:33,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:33,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1220887942, now seen corresponding path program 55 times [2021-03-24 22:35:33,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:33,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009018464] [2021-03-24 22:35:33,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:33,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:33,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:33,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:33,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:33,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:33,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:33,518 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:33,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:33,530 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:33,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:33,547 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:33,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:33,563 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 22:35:33,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009018464] [2021-03-24 22:35:33,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:33,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:33,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699185102] [2021-03-24 22:35:33,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:33,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:33,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:33,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:33,564 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:33,564 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 133 transitions, 4204 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,564 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:33,564 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:33,564 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:33,677 INFO L129 PetriNetUnfolder]: 4/430 cut-off events. [2021-03-24 22:35:33,677 INFO L130 PetriNetUnfolder]: For 11883/11935 co-relation queries the response was YES. [2021-03-24 22:35:33,678 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3087 conditions, 430 events. 4/430 cut-off events. For 11883/11935 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4306 event pairs, 4 based on Foata normal form. 5/430 useless extension candidates. Maximal degree in co-relation 3018. Up to 109 conditions per place. [2021-03-24 22:35:33,679 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 75 selfloop transitions, 47 changer transitions 4/136 dead transitions. [2021-03-24 22:35:33,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 136 transitions, 4468 flow [2021-03-24 22:35:33,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:33,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:33,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:33,680 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:33,680 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:33,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:33,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:33,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:33,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,681 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,681 INFO L185 Difference]: Start difference. First operand has 225 places, 133 transitions, 4204 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:33,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 136 transitions, 4468 flow [2021-03-24 22:35:33,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 136 transitions, 4342 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:33,714 INFO L241 Difference]: Finished difference. Result has 226 places, 129 transitions, 4044 flow [2021-03-24 22:35:33,714 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4084, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4044, PETRI_PLACES=226, PETRI_TRANSITIONS=129} [2021-03-24 22:35:33,714 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 194 predicate places. [2021-03-24 22:35:33,714 INFO L480 AbstractCegarLoop]: Abstraction has has 226 places, 129 transitions, 4044 flow [2021-03-24 22:35:33,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,714 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:33,714 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:33,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-03-24 22:35:33,715 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:33,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:33,715 INFO L82 PathProgramCache]: Analyzing trace with hash 585935550, now seen corresponding path program 56 times [2021-03-24 22:35:33,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:33,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359970985] [2021-03-24 22:35:33,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:33,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:33,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:33,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:33,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:33,733 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:33,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:33,746 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:33,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:33,758 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:33,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:33,775 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:33,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:33,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359970985] [2021-03-24 22:35:33,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:33,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:33,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588673364] [2021-03-24 22:35:33,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:33,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:33,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:33,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:33,793 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:33,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 129 transitions, 4044 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:33,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:33,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:33,897 INFO L129 PetriNetUnfolder]: 4/419 cut-off events. [2021-03-24 22:35:33,897 INFO L130 PetriNetUnfolder]: For 11282/11308 co-relation queries the response was YES. [2021-03-24 22:35:33,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2976 conditions, 419 events. 4/419 cut-off events. For 11282/11308 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4189 event pairs, 0 based on Foata normal form. 6/423 useless extension candidates. Maximal degree in co-relation 2907. Up to 76 conditions per place. [2021-03-24 22:35:33,899 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 72 selfloop transitions, 57 changer transitions 1/140 dead transitions. [2021-03-24 22:35:33,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 140 transitions, 4513 flow [2021-03-24 22:35:33,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:33,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:33,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:33,900 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:33,900 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:33,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:33,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:33,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:33,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,902 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,902 INFO L185 Difference]: Start difference. First operand has 226 places, 129 transitions, 4044 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:33,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 140 transitions, 4513 flow [2021-03-24 22:35:33,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 140 transitions, 4359 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:33,939 INFO L241 Difference]: Finished difference. Result has 227 places, 129 transitions, 4021 flow [2021-03-24 22:35:33,939 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3902, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4021, PETRI_PLACES=227, PETRI_TRANSITIONS=129} [2021-03-24 22:35:33,939 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 195 predicate places. [2021-03-24 22:35:33,939 INFO L480 AbstractCegarLoop]: Abstraction has has 227 places, 129 transitions, 4021 flow [2021-03-24 22:35:33,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:33,939 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:33,939 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:33,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-03-24 22:35:33,939 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:33,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:33,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1327633620, now seen corresponding path program 57 times [2021-03-24 22:35:33,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:33,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295685545] [2021-03-24 22:35:33,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:33,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:33,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:33,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:33,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:33,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:33,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:33,961 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:33,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:33,973 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:33,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:33,989 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:33,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:34,003 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 22:35:34,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295685545] [2021-03-24 22:35:34,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:34,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:34,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316715589] [2021-03-24 22:35:34,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:34,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:34,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:34,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:34,004 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:34,004 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 129 transitions, 4021 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:34,004 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:34,004 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:34,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:34,099 INFO L129 PetriNetUnfolder]: 4/415 cut-off events. [2021-03-24 22:35:34,100 INFO L130 PetriNetUnfolder]: For 11104/11107 co-relation queries the response was YES. [2021-03-24 22:35:34,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2935 conditions, 415 events. 4/415 cut-off events. For 11104/11107 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4117 event pairs, 0 based on Foata normal form. 1/415 useless extension candidates. Maximal degree in co-relation 2865. Up to 80 conditions per place. [2021-03-24 22:35:34,102 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 73 selfloop transitions, 54 changer transitions 2/139 dead transitions. [2021-03-24 22:35:34,102 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 139 transitions, 4446 flow [2021-03-24 22:35:34,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:34,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:34,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:34,103 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:34,103 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:34,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:34,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:34,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:34,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:34,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:34,104 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:34,104 INFO L185 Difference]: Start difference. First operand has 227 places, 129 transitions, 4021 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:34,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 139 transitions, 4446 flow [2021-03-24 22:35:34,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 139 transitions, 4370 flow, removed 16 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:34,141 INFO L241 Difference]: Finished difference. Result has 230 places, 128 transitions, 4027 flow [2021-03-24 22:35:34,141 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3951, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4027, PETRI_PLACES=230, PETRI_TRANSITIONS=128} [2021-03-24 22:35:34,141 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 198 predicate places. [2021-03-24 22:35:34,141 INFO L480 AbstractCegarLoop]: Abstraction has has 230 places, 128 transitions, 4027 flow [2021-03-24 22:35:34,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:34,141 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:34,141 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:34,142 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-03-24 22:35:34,142 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:34,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:34,142 INFO L82 PathProgramCache]: Analyzing trace with hash -5454224, now seen corresponding path program 58 times [2021-03-24 22:35:34,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:34,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821579444] [2021-03-24 22:35:34,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:34,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:34,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:34,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:34,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:34,172 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:34,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:34,179 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:34,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:34,189 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:34,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:34,215 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:34,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:34,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:34,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821579444] [2021-03-24 22:35:34,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:34,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:34,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116105758] [2021-03-24 22:35:34,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:34,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:34,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:34,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:34,237 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:34,237 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 128 transitions, 4027 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:34,237 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:34,237 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:34,237 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:34,347 INFO L129 PetriNetUnfolder]: 3/423 cut-off events. [2021-03-24 22:35:34,347 INFO L130 PetriNetUnfolder]: For 11349/11375 co-relation queries the response was YES. [2021-03-24 22:35:34,348 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2998 conditions, 423 events. 3/423 cut-off events. For 11349/11375 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4207 event pairs, 1 based on Foata normal form. 3/424 useless extension candidates. Maximal degree in co-relation 2928. Up to 89 conditions per place. [2021-03-24 22:35:34,349 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 85 selfloop transitions, 49 changer transitions 3/147 dead transitions. [2021-03-24 22:35:34,350 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 147 transitions, 4760 flow [2021-03-24 22:35:34,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:34,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:34,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:34,351 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:34,351 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:34,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:34,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:34,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:34,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:34,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:34,352 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:34,352 INFO L185 Difference]: Start difference. First operand has 230 places, 128 transitions, 4027 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:34,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 147 transitions, 4760 flow [2021-03-24 22:35:34,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 147 transitions, 4629 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:34,392 INFO L241 Difference]: Finished difference. Result has 234 places, 136 transitions, 4320 flow [2021-03-24 22:35:34,392 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3919, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4320, PETRI_PLACES=234, PETRI_TRANSITIONS=136} [2021-03-24 22:35:34,393 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 202 predicate places. [2021-03-24 22:35:34,393 INFO L480 AbstractCegarLoop]: Abstraction has has 234 places, 136 transitions, 4320 flow [2021-03-24 22:35:34,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:34,393 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:34,393 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:34,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-03-24 22:35:34,393 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:34,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:34,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1082374298, now seen corresponding path program 59 times [2021-03-24 22:35:34,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:34,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137888327] [2021-03-24 22:35:34,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:34,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:34,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:34,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:34,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:34,420 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:34,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:34,433 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:34,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:34,444 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:34,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:34,458 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:34,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:34,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137888327] [2021-03-24 22:35:34,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:34,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:34,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235992946] [2021-03-24 22:35:34,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:34,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:34,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:34,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:34,473 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:34,473 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 136 transitions, 4320 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:34,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:34,474 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:34,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:34,579 INFO L129 PetriNetUnfolder]: 3/414 cut-off events. [2021-03-24 22:35:34,579 INFO L130 PetriNetUnfolder]: For 11575/11575 co-relation queries the response was YES. [2021-03-24 22:35:34,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2982 conditions, 414 events. 3/414 cut-off events. For 11575/11575 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4080 event pairs, 0 based on Foata normal form. 1/415 useless extension candidates. Maximal degree in co-relation 2909. Up to 76 conditions per place. [2021-03-24 22:35:34,581 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 74 selfloop transitions, 59 changer transitions 3/146 dead transitions. [2021-03-24 22:35:34,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 146 transitions, 4763 flow [2021-03-24 22:35:34,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:34,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:34,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:34,585 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:34,585 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:34,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:34,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:34,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:34,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:34,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:34,586 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:34,586 INFO L185 Difference]: Start difference. First operand has 234 places, 136 transitions, 4320 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:34,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 146 transitions, 4763 flow [2021-03-24 22:35:34,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 146 transitions, 4709 flow, removed 14 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:34,622 INFO L241 Difference]: Finished difference. Result has 237 places, 133 transitions, 4284 flow [2021-03-24 22:35:34,622 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4277, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4284, PETRI_PLACES=237, PETRI_TRANSITIONS=133} [2021-03-24 22:35:34,622 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 205 predicate places. [2021-03-24 22:35:34,622 INFO L480 AbstractCegarLoop]: Abstraction has has 237 places, 133 transitions, 4284 flow [2021-03-24 22:35:34,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:34,623 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:34,623 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:34,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-03-24 22:35:34,623 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:34,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:34,623 INFO L82 PathProgramCache]: Analyzing trace with hash 794978954, now seen corresponding path program 60 times [2021-03-24 22:35:34,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:34,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975433971] [2021-03-24 22:35:34,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:34,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:34,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:34,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:34,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:34,637 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:34,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:34,651 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:34,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:34,664 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:34,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:34,681 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:34,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:34,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975433971] [2021-03-24 22:35:34,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:34,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:34,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749189777] [2021-03-24 22:35:34,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:34,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:34,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:34,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:34,699 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:34,699 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 133 transitions, 4284 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:34,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:34,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:34,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:34,811 INFO L129 PetriNetUnfolder]: 1/471 cut-off events. [2021-03-24 22:35:34,812 INFO L130 PetriNetUnfolder]: For 13392/13392 co-relation queries the response was YES. [2021-03-24 22:35:34,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3371 conditions, 471 events. 1/471 cut-off events. For 13392/13392 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4842 event pairs, 1 based on Foata normal form. 1/471 useless extension candidates. Maximal degree in co-relation 3299. Up to 95 conditions per place. [2021-03-24 22:35:34,814 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 91 selfloop transitions, 54 changer transitions 2/157 dead transitions. [2021-03-24 22:35:34,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 157 transitions, 5293 flow [2021-03-24 22:35:34,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:34,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:34,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:34,815 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:34,815 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:34,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:34,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:34,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:34,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:34,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:34,817 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:34,817 INFO L185 Difference]: Start difference. First operand has 237 places, 133 transitions, 4284 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:34,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 157 transitions, 5293 flow [2021-03-24 22:35:34,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 157 transitions, 5088 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-03-24 22:35:34,873 INFO L241 Difference]: Finished difference. Result has 240 places, 142 transitions, 4615 flow [2021-03-24 22:35:34,873 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4116, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4615, PETRI_PLACES=240, PETRI_TRANSITIONS=142} [2021-03-24 22:35:34,873 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 208 predicate places. [2021-03-24 22:35:34,874 INFO L480 AbstractCegarLoop]: Abstraction has has 240 places, 142 transitions, 4615 flow [2021-03-24 22:35:34,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:34,874 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:34,874 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:34,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-03-24 22:35:34,874 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:34,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:34,874 INFO L82 PathProgramCache]: Analyzing trace with hash -2001787642, now seen corresponding path program 61 times [2021-03-24 22:35:34,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:34,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788274451] [2021-03-24 22:35:34,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:34,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:34,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:34,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:34,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:34,891 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:34,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:34,905 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:34,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:34,921 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:34,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:34,940 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:34,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:34,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:34,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788274451] [2021-03-24 22:35:34,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:34,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:34,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687750062] [2021-03-24 22:35:34,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:34,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:34,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:34,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:34,960 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:34,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 142 transitions, 4615 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:34,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:34,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:34,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:35,066 INFO L129 PetriNetUnfolder]: 1/463 cut-off events. [2021-03-24 22:35:35,066 INFO L130 PetriNetUnfolder]: For 13442/13442 co-relation queries the response was YES. [2021-03-24 22:35:35,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3344 conditions, 463 events. 1/463 cut-off events. For 13442/13442 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4743 event pairs, 0 based on Foata normal form. 1/464 useless extension candidates. Maximal degree in co-relation 3269. Up to 108 conditions per place. [2021-03-24 22:35:35,068 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 97 selfloop transitions, 53 changer transitions 2/162 dead transitions. [2021-03-24 22:35:35,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 162 transitions, 5424 flow [2021-03-24 22:35:35,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:35,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:35,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:35,069 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:35,069 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:35,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:35,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:35,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:35,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:35,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:35,070 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:35,070 INFO L185 Difference]: Start difference. First operand has 240 places, 142 transitions, 4615 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:35,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 162 transitions, 5424 flow [2021-03-24 22:35:35,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 162 transitions, 5375 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:35,119 INFO L241 Difference]: Finished difference. Result has 245 places, 146 transitions, 4842 flow [2021-03-24 22:35:35,120 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4575, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4842, PETRI_PLACES=245, PETRI_TRANSITIONS=146} [2021-03-24 22:35:35,120 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 213 predicate places. [2021-03-24 22:35:35,120 INFO L480 AbstractCegarLoop]: Abstraction has has 245 places, 146 transitions, 4842 flow [2021-03-24 22:35:35,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:35,120 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:35,120 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:35,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-03-24 22:35:35,120 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:35,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:35,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1264136224, now seen corresponding path program 62 times [2021-03-24 22:35:35,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:35,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186714051] [2021-03-24 22:35:35,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:35,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:35,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:35,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:35,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:35,134 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:35,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:35,147 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:35,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:35,164 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:35,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:35,182 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:35,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:35,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:35,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186714051] [2021-03-24 22:35:35,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:35,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:35,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881871126] [2021-03-24 22:35:35,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:35,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:35,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:35,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:35,197 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:35,197 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 146 transitions, 4842 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:35,197 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:35,197 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:35,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:35,291 INFO L129 PetriNetUnfolder]: 1/455 cut-off events. [2021-03-24 22:35:35,291 INFO L130 PetriNetUnfolder]: For 14173/14185 co-relation queries the response was YES. [2021-03-24 22:35:35,292 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3377 conditions, 455 events. 1/455 cut-off events. For 14173/14185 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4640 event pairs, 0 based on Foata normal form. 2/457 useless extension candidates. Maximal degree in co-relation 3301. Up to 79 conditions per place. [2021-03-24 22:35:35,293 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 80 selfloop transitions, 57 changer transitions 3/150 dead transitions. [2021-03-24 22:35:35,293 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 150 transitions, 5148 flow [2021-03-24 22:35:35,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:35,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:35,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-24 22:35:35,294 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-24 22:35:35,294 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-24 22:35:35,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-24 22:35:35,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:35,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-24 22:35:35,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:35,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:35,295 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:35,295 INFO L185 Difference]: Start difference. First operand has 245 places, 146 transitions, 4842 flow. Second operand 7 states and 306 transitions. [2021-03-24 22:35:35,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 150 transitions, 5148 flow [2021-03-24 22:35:35,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 150 transitions, 5067 flow, removed 14 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:35,340 INFO L241 Difference]: Finished difference. Result has 247 places, 143 transitions, 4769 flow [2021-03-24 22:35:35,340 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4767, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4769, PETRI_PLACES=247, PETRI_TRANSITIONS=143} [2021-03-24 22:35:35,340 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 215 predicate places. [2021-03-24 22:35:35,340 INFO L480 AbstractCegarLoop]: Abstraction has has 247 places, 143 transitions, 4769 flow [2021-03-24 22:35:35,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:35,341 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:35,341 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:35,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-03-24 22:35:35,341 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:35,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:35,341 INFO L82 PathProgramCache]: Analyzing trace with hash 490388700, now seen corresponding path program 63 times [2021-03-24 22:35:35,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:35,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429225044] [2021-03-24 22:35:35,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:35,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:35,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:35,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:35,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:35,355 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:35,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:35,367 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:35,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:35,386 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:35,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:35,401 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:35,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:35,417 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 22:35:35,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429225044] [2021-03-24 22:35:35,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:35,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:35,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476407500] [2021-03-24 22:35:35,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:35,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:35,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:35,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:35,418 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:35,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 143 transitions, 4769 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:35,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:35,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:35,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:35,550 INFO L129 PetriNetUnfolder]: 1/446 cut-off events. [2021-03-24 22:35:35,551 INFO L130 PetriNetUnfolder]: For 14153/14219 co-relation queries the response was YES. [2021-03-24 22:35:35,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3355 conditions, 446 events. 1/446 cut-off events. For 14153/14219 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4518 event pairs, 0 based on Foata normal form. 16/462 useless extension candidates. Maximal degree in co-relation 3281. Up to 79 conditions per place. [2021-03-24 22:35:35,553 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 75 selfloop transitions, 60 changer transitions 2/147 dead transitions. [2021-03-24 22:35:35,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 147 transitions, 5069 flow [2021-03-24 22:35:35,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:35,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:35,554 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:35,554 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:35,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:35,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:35,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:35,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:35,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:35,555 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:35,555 INFO L185 Difference]: Start difference. First operand has 247 places, 143 transitions, 4769 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:35,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 147 transitions, 5069 flow [2021-03-24 22:35:35,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 147 transitions, 4897 flow, removed 25 selfloop flow, removed 6 redundant places. [2021-03-24 22:35:35,610 INFO L241 Difference]: Finished difference. Result has 243 places, 141 transitions, 4640 flow [2021-03-24 22:35:35,610 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4603, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4640, PETRI_PLACES=243, PETRI_TRANSITIONS=141} [2021-03-24 22:35:35,611 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 211 predicate places. [2021-03-24 22:35:35,611 INFO L480 AbstractCegarLoop]: Abstraction has has 243 places, 141 transitions, 4640 flow [2021-03-24 22:35:35,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:35,611 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:35,611 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:35,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-03-24 22:35:35,611 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:35,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:35,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1869380256, now seen corresponding path program 64 times [2021-03-24 22:35:35,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:35,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265435948] [2021-03-24 22:35:35,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:35,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:35,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:35,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:35,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:35,643 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:35,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:35,656 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:35,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:35,675 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:35,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:35,692 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:35,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:35,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:35,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265435948] [2021-03-24 22:35:35,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:35,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:35,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586308839] [2021-03-24 22:35:35,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:35,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:35,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:35,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:35,711 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:35,711 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 141 transitions, 4640 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:35,711 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:35,711 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:35,711 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:35,819 INFO L129 PetriNetUnfolder]: 1/438 cut-off events. [2021-03-24 22:35:35,819 INFO L130 PetriNetUnfolder]: For 13266/13332 co-relation queries the response was YES. [2021-03-24 22:35:35,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3288 conditions, 438 events. 1/438 cut-off events. For 13266/13332 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4418 event pairs, 0 based on Foata normal form. 16/454 useless extension candidates. Maximal degree in co-relation 3216. Up to 79 conditions per place. [2021-03-24 22:35:35,822 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 75 selfloop transitions, 55 changer transitions 4/144 dead transitions. [2021-03-24 22:35:35,822 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 144 transitions, 4930 flow [2021-03-24 22:35:35,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:35,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:35,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-24 22:35:35,823 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-24 22:35:35,823 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-24 22:35:35,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-24 22:35:35,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:35,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-24 22:35:35,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:35,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:35,824 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:35,824 INFO L185 Difference]: Start difference. First operand has 243 places, 141 transitions, 4640 flow. Second operand 7 states and 306 transitions. [2021-03-24 22:35:35,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 144 transitions, 4930 flow [2021-03-24 22:35:35,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 144 transitions, 4839 flow, removed 8 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:35,873 INFO L241 Difference]: Finished difference. Result has 245 places, 137 transitions, 4531 flow [2021-03-24 22:35:35,873 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4553, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4531, PETRI_PLACES=245, PETRI_TRANSITIONS=137} [2021-03-24 22:35:35,873 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 213 predicate places. [2021-03-24 22:35:35,873 INFO L480 AbstractCegarLoop]: Abstraction has has 245 places, 137 transitions, 4531 flow [2021-03-24 22:35:35,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:35,874 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:35,874 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:35,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-03-24 22:35:35,874 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:35,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:35,874 INFO L82 PathProgramCache]: Analyzing trace with hash -594378344, now seen corresponding path program 65 times [2021-03-24 22:35:35,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:35,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147820606] [2021-03-24 22:35:35,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:35,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:35,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:35,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:35,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:35,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:35,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:35,896 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:35,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:35,918 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:35,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:35,935 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:35,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:35,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:35,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147820606] [2021-03-24 22:35:35,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:35,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:35,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724128520] [2021-03-24 22:35:35,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:35,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:35,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:35,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:35,955 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:35,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 137 transitions, 4531 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:35,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:35,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:35,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:36,054 INFO L129 PetriNetUnfolder]: 1/428 cut-off events. [2021-03-24 22:35:36,054 INFO L130 PetriNetUnfolder]: For 12620/12632 co-relation queries the response was YES. [2021-03-24 22:35:36,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3236 conditions, 428 events. 1/428 cut-off events. For 12620/12632 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4284 event pairs, 0 based on Foata normal form. 2/430 useless extension candidates. Maximal degree in co-relation 3164. Up to 82 conditions per place. [2021-03-24 22:35:36,056 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 75 selfloop transitions, 54 changer transitions 2/141 dead transitions. [2021-03-24 22:35:36,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 141 transitions, 4819 flow [2021-03-24 22:35:36,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:36,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:36,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:36,057 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:36,057 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:36,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:36,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:36,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:36,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:36,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:36,059 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:36,059 INFO L185 Difference]: Start difference. First operand has 245 places, 137 transitions, 4531 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:36,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 141 transitions, 4819 flow [2021-03-24 22:35:36,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 141 transitions, 4684 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-03-24 22:35:36,112 INFO L241 Difference]: Finished difference. Result has 241 places, 135 transitions, 4435 flow [2021-03-24 22:35:36,112 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4402, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4435, PETRI_PLACES=241, PETRI_TRANSITIONS=135} [2021-03-24 22:35:36,112 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 209 predicate places. [2021-03-24 22:35:36,112 INFO L480 AbstractCegarLoop]: Abstraction has has 241 places, 135 transitions, 4435 flow [2021-03-24 22:35:36,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:36,112 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:36,112 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:36,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-03-24 22:35:36,113 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:36,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:36,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1412016604, now seen corresponding path program 66 times [2021-03-24 22:35:36,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:36,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147454871] [2021-03-24 22:35:36,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:36,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:36,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:36,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:36,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:36,128 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:36,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:36,143 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:36,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:36,159 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:36,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:36,175 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:36,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:36,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:36,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147454871] [2021-03-24 22:35:36,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:36,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:36,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876488249] [2021-03-24 22:35:36,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:36,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:36,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:36,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:36,190 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:36,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 135 transitions, 4435 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:36,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:36,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:36,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:36,271 INFO L129 PetriNetUnfolder]: 1/421 cut-off events. [2021-03-24 22:35:36,271 INFO L130 PetriNetUnfolder]: For 12156/12168 co-relation queries the response was YES. [2021-03-24 22:35:36,272 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3180 conditions, 421 events. 1/421 cut-off events. For 12156/12168 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4221 event pairs, 0 based on Foata normal form. 2/423 useless extension candidates. Maximal degree in co-relation 3110. Up to 105 conditions per place. [2021-03-24 22:35:36,273 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 84 selfloop transitions, 52 changer transitions 2/148 dead transitions. [2021-03-24 22:35:36,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 148 transitions, 5046 flow [2021-03-24 22:35:36,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:36,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:36,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:36,273 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:36,273 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:36,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:36,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:36,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:36,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:36,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:36,274 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:36,274 INFO L185 Difference]: Start difference. First operand has 241 places, 135 transitions, 4435 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:36,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 148 transitions, 5046 flow [2021-03-24 22:35:36,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 148 transitions, 4941 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:36,328 INFO L241 Difference]: Finished difference. Result has 244 places, 140 transitions, 4671 flow [2021-03-24 22:35:36,328 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4340, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4671, PETRI_PLACES=244, PETRI_TRANSITIONS=140} [2021-03-24 22:35:36,328 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 212 predicate places. [2021-03-24 22:35:36,328 INFO L480 AbstractCegarLoop]: Abstraction has has 244 places, 140 transitions, 4671 flow [2021-03-24 22:35:36,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:36,329 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:36,329 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:36,329 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-03-24 22:35:36,329 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:36,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:36,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1559539296, now seen corresponding path program 67 times [2021-03-24 22:35:36,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:36,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657586144] [2021-03-24 22:35:36,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:36,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:36,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:36,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:36,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:36,342 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:36,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:36,359 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:36,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:36,379 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:36,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:36,397 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:36,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:36,425 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 22:35:36,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657586144] [2021-03-24 22:35:36,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:36,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:36,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812732930] [2021-03-24 22:35:36,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:36,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:36,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:36,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:36,426 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:36,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 140 transitions, 4671 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:36,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:36,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:36,426 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:36,559 INFO L129 PetriNetUnfolder]: 1/413 cut-off events. [2021-03-24 22:35:36,559 INFO L130 PetriNetUnfolder]: For 12607/12643 co-relation queries the response was YES. [2021-03-24 22:35:36,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3163 conditions, 413 events. 1/413 cut-off events. For 12607/12643 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4082 event pairs, 0 based on Foata normal form. 7/420 useless extension candidates. Maximal degree in co-relation 3091. Up to 105 conditions per place. [2021-03-24 22:35:36,561 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 86 selfloop transitions, 48 changer transitions 2/146 dead transitions. [2021-03-24 22:35:36,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 146 transitions, 5021 flow [2021-03-24 22:35:36,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:36,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:36,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:36,562 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:36,562 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:36,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:36,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:36,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:36,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:36,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:36,563 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:36,564 INFO L185 Difference]: Start difference. First operand has 244 places, 140 transitions, 4671 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:36,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 146 transitions, 5021 flow [2021-03-24 22:35:36,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 146 transitions, 4944 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:36,616 INFO L241 Difference]: Finished difference. Result has 248 places, 140 transitions, 4688 flow [2021-03-24 22:35:36,617 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4600, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4688, PETRI_PLACES=248, PETRI_TRANSITIONS=140} [2021-03-24 22:35:36,617 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 216 predicate places. [2021-03-24 22:35:36,617 INFO L480 AbstractCegarLoop]: Abstraction has has 248 places, 140 transitions, 4688 flow [2021-03-24 22:35:36,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:36,617 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:36,617 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:36,617 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-03-24 22:35:36,617 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:36,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:36,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1516186822, now seen corresponding path program 68 times [2021-03-24 22:35:36,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:36,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84858307] [2021-03-24 22:35:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:36,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:36,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:36,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:36,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:36,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:36,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:36,642 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:36,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:36,660 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:36,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:36,674 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:36,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:36,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:36,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84858307] [2021-03-24 22:35:36,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:36,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:36,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112995714] [2021-03-24 22:35:36,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:36,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:36,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:36,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:36,689 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:36,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 140 transitions, 4688 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:36,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:36,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:36,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:36,773 INFO L129 PetriNetUnfolder]: 1/406 cut-off events. [2021-03-24 22:35:36,773 INFO L130 PetriNetUnfolder]: For 12628/12664 co-relation queries the response was YES. [2021-03-24 22:35:36,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3137 conditions, 406 events. 1/406 cut-off events. For 12628/12664 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3994 event pairs, 0 based on Foata normal form. 11/417 useless extension candidates. Maximal degree in co-relation 3064. Up to 82 conditions per place. [2021-03-24 22:35:36,775 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 74 selfloop transitions, 57 changer transitions 3/144 dead transitions. [2021-03-24 22:35:36,775 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 144 transitions, 4982 flow [2021-03-24 22:35:36,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:36,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:36,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-24 22:35:36,776 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-24 22:35:36,776 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-24 22:35:36,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-24 22:35:36,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:36,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-24 22:35:36,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:36,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:36,777 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:36,777 INFO L185 Difference]: Start difference. First operand has 248 places, 140 transitions, 4688 flow. Second operand 7 states and 306 transitions. [2021-03-24 22:35:36,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 144 transitions, 4982 flow [2021-03-24 22:35:36,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 144 transitions, 4907 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:36,832 INFO L241 Difference]: Finished difference. Result has 251 places, 137 transitions, 4608 flow [2021-03-24 22:35:36,832 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4619, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4608, PETRI_PLACES=251, PETRI_TRANSITIONS=137} [2021-03-24 22:35:36,832 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 219 predicate places. [2021-03-24 22:35:36,832 INFO L480 AbstractCegarLoop]: Abstraction has has 251 places, 137 transitions, 4608 flow [2021-03-24 22:35:36,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:36,833 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:36,833 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:36,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-03-24 22:35:36,833 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:36,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:36,833 INFO L82 PathProgramCache]: Analyzing trace with hash 150324154, now seen corresponding path program 69 times [2021-03-24 22:35:36,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:36,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224481135] [2021-03-24 22:35:36,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:36,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:36,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:36,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:36,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:36,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:36,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:36,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:36,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 22:35:36,866 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:36,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:36,882 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:36,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:36,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:36,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224481135] [2021-03-24 22:35:36,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:36,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:36,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366462219] [2021-03-24 22:35:36,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:36,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:36,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:36,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:36,898 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:36,899 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 137 transitions, 4608 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:36,899 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:36,899 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:36,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:37,011 INFO L129 PetriNetUnfolder]: 1/398 cut-off events. [2021-03-24 22:35:37,012 INFO L130 PetriNetUnfolder]: For 12217/12229 co-relation queries the response was YES. [2021-03-24 22:35:37,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3088 conditions, 398 events. 1/398 cut-off events. For 12217/12229 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3909 event pairs, 0 based on Foata normal form. 2/400 useless extension candidates. Maximal degree in co-relation 3015. Up to 82 conditions per place. [2021-03-24 22:35:37,014 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 74 selfloop transitions, 55 changer transitions 2/141 dead transitions. [2021-03-24 22:35:37,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 141 transitions, 4896 flow [2021-03-24 22:35:37,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:37,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:37,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:37,015 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:37,015 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:37,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:37,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:37,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:37,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,016 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,016 INFO L185 Difference]: Start difference. First operand has 251 places, 137 transitions, 4608 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:37,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 141 transitions, 4896 flow [2021-03-24 22:35:37,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 141 transitions, 4767 flow, removed 18 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:37,069 INFO L241 Difference]: Finished difference. Result has 248 places, 135 transitions, 4504 flow [2021-03-24 22:35:37,069 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4485, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4504, PETRI_PLACES=248, PETRI_TRANSITIONS=135} [2021-03-24 22:35:37,069 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 216 predicate places. [2021-03-24 22:35:37,069 INFO L480 AbstractCegarLoop]: Abstraction has has 248 places, 135 transitions, 4504 flow [2021-03-24 22:35:37,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,070 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:37,070 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:37,070 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-03-24 22:35:37,070 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:37,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:37,070 INFO L82 PathProgramCache]: Analyzing trace with hash 2105077668, now seen corresponding path program 70 times [2021-03-24 22:35:37,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:37,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244238602] [2021-03-24 22:35:37,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:37,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:37,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:37,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:37,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:37,083 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:37,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:37,098 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:37,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:37,110 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:37,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:37,127 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:37,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:37,145 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 22:35:37,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244238602] [2021-03-24 22:35:37,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:37,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:37,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329532804] [2021-03-24 22:35:37,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:37,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:37,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:37,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:37,146 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:37,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 135 transitions, 4504 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:37,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:37,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:37,243 INFO L129 PetriNetUnfolder]: 1/391 cut-off events. [2021-03-24 22:35:37,243 INFO L130 PetriNetUnfolder]: For 11734/11770 co-relation queries the response was YES. [2021-03-24 22:35:37,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3041 conditions, 391 events. 1/391 cut-off events. For 11734/11770 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3799 event pairs, 0 based on Foata normal form. 7/398 useless extension candidates. Maximal degree in co-relation 2970. Up to 105 conditions per place. [2021-03-24 22:35:37,245 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 86 selfloop transitions, 41 changer transitions 3/140 dead transitions. [2021-03-24 22:35:37,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 140 transitions, 4821 flow [2021-03-24 22:35:37,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:37,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:37,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:37,246 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:37,246 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:37,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:37,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:37,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:37,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,247 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,247 INFO L185 Difference]: Start difference. First operand has 248 places, 135 transitions, 4504 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:37,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 140 transitions, 4821 flow [2021-03-24 22:35:37,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 140 transitions, 4690 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:37,298 INFO L241 Difference]: Finished difference. Result has 249 places, 133 transitions, 4404 flow [2021-03-24 22:35:37,298 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4379, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4404, PETRI_PLACES=249, PETRI_TRANSITIONS=133} [2021-03-24 22:35:37,298 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 217 predicate places. [2021-03-24 22:35:37,298 INFO L480 AbstractCegarLoop]: Abstraction has has 249 places, 133 transitions, 4404 flow [2021-03-24 22:35:37,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,299 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:37,299 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:37,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-03-24 22:35:37,299 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:37,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:37,299 INFO L82 PathProgramCache]: Analyzing trace with hash -704982500, now seen corresponding path program 71 times [2021-03-24 22:35:37,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:37,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840353933] [2021-03-24 22:35:37,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:37,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:37,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:37,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:37,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:37,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:37,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:37,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:37,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 22:35:37,331 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:37,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:37,348 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:37,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:37,364 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 22:35:37,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840353933] [2021-03-24 22:35:37,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:37,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:37,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771094838] [2021-03-24 22:35:37,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:37,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:37,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:37,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:37,365 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:37,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 133 transitions, 4404 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:37,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:37,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:37,476 INFO L129 PetriNetUnfolder]: 1/382 cut-off events. [2021-03-24 22:35:37,476 INFO L130 PetriNetUnfolder]: For 11407/11443 co-relation queries the response was YES. [2021-03-24 22:35:37,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2960 conditions, 382 events. 1/382 cut-off events. For 11407/11443 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3708 event pairs, 0 based on Foata normal form. 11/393 useless extension candidates. Maximal degree in co-relation 2888. Up to 80 conditions per place. [2021-03-24 22:35:37,478 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 70 selfloop transitions, 53 changer transitions 4/137 dead transitions. [2021-03-24 22:35:37,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 137 transitions, 4684 flow [2021-03-24 22:35:37,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:37,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:37,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-24 22:35:37,479 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-24 22:35:37,479 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-24 22:35:37,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-24 22:35:37,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:37,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-24 22:35:37,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,480 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,480 INFO L185 Difference]: Start difference. First operand has 249 places, 133 transitions, 4404 flow. Second operand 7 states and 306 transitions. [2021-03-24 22:35:37,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 137 transitions, 4684 flow [2021-03-24 22:35:37,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 137 transitions, 4598 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:37,533 INFO L241 Difference]: Finished difference. Result has 251 places, 129 transitions, 4296 flow [2021-03-24 22:35:37,533 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4324, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4296, PETRI_PLACES=251, PETRI_TRANSITIONS=129} [2021-03-24 22:35:37,533 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 219 predicate places. [2021-03-24 22:35:37,533 INFO L480 AbstractCegarLoop]: Abstraction has has 251 places, 129 transitions, 4296 flow [2021-03-24 22:35:37,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,534 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:37,534 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:37,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-03-24 22:35:37,534 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:37,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:37,534 INFO L82 PathProgramCache]: Analyzing trace with hash -936633184, now seen corresponding path program 72 times [2021-03-24 22:35:37,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:37,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080719897] [2021-03-24 22:35:37,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:37,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:37,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:37,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:37,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:37,556 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:37,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:37,572 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:37,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:37,596 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:37,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:37,615 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:37,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:37,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:37,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080719897] [2021-03-24 22:35:37,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:37,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:37,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536695104] [2021-03-24 22:35:37,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:37,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:37,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:37,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:37,634 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:37,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 129 transitions, 4296 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:37,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:37,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:37,752 INFO L129 PetriNetUnfolder]: 1/372 cut-off events. [2021-03-24 22:35:37,752 INFO L130 PetriNetUnfolder]: For 10954/10966 co-relation queries the response was YES. [2021-03-24 22:35:37,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2889 conditions, 372 events. 1/372 cut-off events. For 10954/10966 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3561 event pairs, 0 based on Foata normal form. 2/374 useless extension candidates. Maximal degree in co-relation 2817. Up to 102 conditions per place. [2021-03-24 22:35:37,754 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 78 selfloop transitions, 41 changer transitions 3/132 dead transitions. [2021-03-24 22:35:37,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 132 transitions, 4562 flow [2021-03-24 22:35:37,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:37,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:37,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-24 22:35:37,755 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-24 22:35:37,755 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-24 22:35:37,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-24 22:35:37,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:37,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-24 22:35:37,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,756 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,756 INFO L185 Difference]: Start difference. First operand has 251 places, 129 transitions, 4296 flow. Second operand 7 states and 306 transitions. [2021-03-24 22:35:37,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 132 transitions, 4562 flow [2021-03-24 22:35:37,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 132 transitions, 4434 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:37,794 INFO L241 Difference]: Finished difference. Result has 248 places, 126 transitions, 4144 flow [2021-03-24 22:35:37,794 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4172, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4144, PETRI_PLACES=248, PETRI_TRANSITIONS=126} [2021-03-24 22:35:37,794 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 216 predicate places. [2021-03-24 22:35:37,794 INFO L480 AbstractCegarLoop]: Abstraction has has 248 places, 126 transitions, 4144 flow [2021-03-24 22:35:37,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,795 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:37,795 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:37,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-03-24 22:35:37,795 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:37,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:37,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1161405578, now seen corresponding path program 73 times [2021-03-24 22:35:37,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:37,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754087253] [2021-03-24 22:35:37,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:37,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:37,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:37,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:37,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:37,811 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:37,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:37,826 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:37,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:37,843 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:37,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:37,859 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:37,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:37,882 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 22:35:37,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754087253] [2021-03-24 22:35:37,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:37,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:37,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478446764] [2021-03-24 22:35:37,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:37,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:37,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:37,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:37,883 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:37,883 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 126 transitions, 4144 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:37,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:37,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:37,957 INFO L129 PetriNetUnfolder]: 1/363 cut-off events. [2021-03-24 22:35:37,958 INFO L130 PetriNetUnfolder]: For 10386/10398 co-relation queries the response was YES. [2021-03-24 22:35:37,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2804 conditions, 363 events. 1/363 cut-off events. For 10386/10398 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3458 event pairs, 0 based on Foata normal form. 2/365 useless extension candidates. Maximal degree in co-relation 2733. Up to 102 conditions per place. [2021-03-24 22:35:37,959 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 75 selfloop transitions, 40 changer transitions 4/129 dead transitions. [2021-03-24 22:35:37,959 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 129 transitions, 4404 flow [2021-03-24 22:35:37,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:37,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:37,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2021-03-24 22:35:37,961 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8221024258760108 [2021-03-24 22:35:37,961 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2021-03-24 22:35:37,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2021-03-24 22:35:37,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:37,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2021-03-24 22:35:37,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.57142857142857) internal successors, (305), 7 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,963 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:37,963 INFO L185 Difference]: Start difference. First operand has 248 places, 126 transitions, 4144 flow. Second operand 7 states and 305 transitions. [2021-03-24 22:35:37,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 129 transitions, 4404 flow [2021-03-24 22:35:38,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 129 transitions, 4315 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:38,010 INFO L241 Difference]: Finished difference. Result has 247 places, 122 transitions, 4008 flow [2021-03-24 22:35:38,010 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4059, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4008, PETRI_PLACES=247, PETRI_TRANSITIONS=122} [2021-03-24 22:35:38,010 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 215 predicate places. [2021-03-24 22:35:38,010 INFO L480 AbstractCegarLoop]: Abstraction has has 247 places, 122 transitions, 4008 flow [2021-03-24 22:35:38,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:38,010 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:38,010 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:38,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-03-24 22:35:38,011 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:38,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:38,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1599964466, now seen corresponding path program 74 times [2021-03-24 22:35:38,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:38,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910534808] [2021-03-24 22:35:38,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:38,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:38,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:38,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:38,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:38,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:38,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:38,030 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:38,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:38,050 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:38,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:38,067 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:38,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:38,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910534808] [2021-03-24 22:35:38,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:38,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:38,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847878110] [2021-03-24 22:35:38,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:38,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:38,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:38,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:38,085 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:38,085 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 122 transitions, 4008 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:38,085 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:38,085 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:38,085 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:38,205 INFO L129 PetriNetUnfolder]: 0/403 cut-off events. [2021-03-24 22:35:38,205 INFO L130 PetriNetUnfolder]: For 11628/11643 co-relation queries the response was YES. [2021-03-24 22:35:38,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3097 conditions, 403 events. 0/403 cut-off events. For 11628/11643 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3960 event pairs, 0 based on Foata normal form. 1/403 useless extension candidates. Maximal degree in co-relation 0. Up to 72 conditions per place. [2021-03-24 22:35:38,206 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 75 selfloop transitions, 57 changer transitions 2/144 dead transitions. [2021-03-24 22:35:38,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 144 transitions, 4995 flow [2021-03-24 22:35:38,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:38,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:38,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:38,207 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:38,207 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:38,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:38,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:38,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:38,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:38,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:38,208 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:38,209 INFO L185 Difference]: Start difference. First operand has 247 places, 122 transitions, 4008 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:38,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 144 transitions, 4995 flow [2021-03-24 22:35:38,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 144 transitions, 4870 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:38,259 INFO L241 Difference]: Finished difference. Result has 248 places, 133 transitions, 4554 flow [2021-03-24 22:35:38,259 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3913, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4554, PETRI_PLACES=248, PETRI_TRANSITIONS=133} [2021-03-24 22:35:38,259 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 216 predicate places. [2021-03-24 22:35:38,259 INFO L480 AbstractCegarLoop]: Abstraction has has 248 places, 133 transitions, 4554 flow [2021-03-24 22:35:38,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:38,259 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:38,259 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:38,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-03-24 22:35:38,260 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:38,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:38,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1594237344, now seen corresponding path program 75 times [2021-03-24 22:35:38,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:38,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797679261] [2021-03-24 22:35:38,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:38,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:38,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:38,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:38,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:38,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:38,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:38,280 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:38,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:38,300 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:38,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:38,319 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:38,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:38,335 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 22:35:38,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797679261] [2021-03-24 22:35:38,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:38,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:38,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257183335] [2021-03-24 22:35:38,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:38,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:38,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:38,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:38,337 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:38,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 133 transitions, 4554 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:38,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:38,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:38,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:38,421 INFO L129 PetriNetUnfolder]: 0/395 cut-off events. [2021-03-24 22:35:38,421 INFO L130 PetriNetUnfolder]: For 12049/12067 co-relation queries the response was YES. [2021-03-24 22:35:38,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3113 conditions, 395 events. 0/395 cut-off events. For 12049/12067 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3865 event pairs, 0 based on Foata normal form. 2/397 useless extension candidates. Maximal degree in co-relation 0. Up to 100 conditions per place. [2021-03-24 22:35:38,421 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 81 selfloop transitions, 50 changer transitions 2/143 dead transitions. [2021-03-24 22:35:38,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 143 transitions, 5050 flow [2021-03-24 22:35:38,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:38,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:38,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:38,423 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:38,424 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:38,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:38,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:38,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:38,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:38,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:38,425 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:38,425 INFO L185 Difference]: Start difference. First operand has 248 places, 133 transitions, 4554 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:38,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 143 transitions, 5050 flow [2021-03-24 22:35:38,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 143 transitions, 5012 flow, removed 9 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:38,471 INFO L241 Difference]: Finished difference. Result has 253 places, 134 transitions, 4693 flow [2021-03-24 22:35:38,471 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4523, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4693, PETRI_PLACES=253, PETRI_TRANSITIONS=134} [2021-03-24 22:35:38,471 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 221 predicate places. [2021-03-24 22:35:38,471 INFO L480 AbstractCegarLoop]: Abstraction has has 253 places, 134 transitions, 4693 flow [2021-03-24 22:35:38,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:38,471 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:38,471 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:38,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-03-24 22:35:38,472 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:38,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:38,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1788249828, now seen corresponding path program 76 times [2021-03-24 22:35:38,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:38,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601241744] [2021-03-24 22:35:38,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:38,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:38,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:38,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:38,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:38,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:38,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:38,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:38,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 22:35:38,502 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:38,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:38,517 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:38,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:38,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:38,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601241744] [2021-03-24 22:35:38,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:38,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:38,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587823350] [2021-03-24 22:35:38,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:38,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:38,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:38,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:38,533 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:38,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 134 transitions, 4693 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:38,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:38,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:38,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:38,619 INFO L129 PetriNetUnfolder]: 0/387 cut-off events. [2021-03-24 22:35:38,619 INFO L130 PetriNetUnfolder]: For 12721/12744 co-relation queries the response was YES. [2021-03-24 22:35:38,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3117 conditions, 387 events. 0/387 cut-off events. For 12721/12744 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3766 event pairs, 0 based on Foata normal form. 5/392 useless extension candidates. Maximal degree in co-relation 0. Up to 100 conditions per place. [2021-03-24 22:35:38,620 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 80 selfloop transitions, 49 changer transitions 2/141 dead transitions. [2021-03-24 22:35:38,620 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 141 transitions, 5086 flow [2021-03-24 22:35:38,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:38,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:38,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:38,627 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:38,627 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:38,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:38,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:38,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:38,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:38,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:38,629 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:38,629 INFO L185 Difference]: Start difference. First operand has 253 places, 134 transitions, 4693 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:38,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 141 transitions, 5086 flow [2021-03-24 22:35:38,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 141 transitions, 4998 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:38,671 INFO L241 Difference]: Finished difference. Result has 258 places, 135 transitions, 4747 flow [2021-03-24 22:35:38,671 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4611, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4747, PETRI_PLACES=258, PETRI_TRANSITIONS=135} [2021-03-24 22:35:38,671 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 226 predicate places. [2021-03-24 22:35:38,671 INFO L480 AbstractCegarLoop]: Abstraction has has 258 places, 135 transitions, 4747 flow [2021-03-24 22:35:38,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:38,671 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:38,671 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:38,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-03-24 22:35:38,671 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:38,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:38,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1243990850, now seen corresponding path program 77 times [2021-03-24 22:35:38,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:38,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089159682] [2021-03-24 22:35:38,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:38,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:38,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:38,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:38,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:38,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:38,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:38,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:38,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 22:35:38,704 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:38,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:38,721 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:38,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:38,738 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 22:35:38,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089159682] [2021-03-24 22:35:38,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:38,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:38,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125806591] [2021-03-24 22:35:38,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:38,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:38,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:38,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:38,739 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:38,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 135 transitions, 4747 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:38,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:38,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:38,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:38,865 INFO L129 PetriNetUnfolder]: 0/380 cut-off events. [2021-03-24 22:35:38,865 INFO L130 PetriNetUnfolder]: For 12418/12441 co-relation queries the response was YES. [2021-03-24 22:35:38,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3103 conditions, 380 events. 0/380 cut-off events. For 12418/12441 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3660 event pairs, 0 based on Foata normal form. 5/385 useless extension candidates. Maximal degree in co-relation 0. Up to 100 conditions per place. [2021-03-24 22:35:38,866 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 79 selfloop transitions, 47 changer transitions 3/139 dead transitions. [2021-03-24 22:35:38,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 139 transitions, 5044 flow [2021-03-24 22:35:38,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:38,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:38,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:38,867 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:38,867 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:38,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:38,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:38,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:38,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:38,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:38,868 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:38,868 INFO L185 Difference]: Start difference. First operand has 258 places, 135 transitions, 4747 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:38,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 139 transitions, 5044 flow [2021-03-24 22:35:38,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 139 transitions, 4943 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:38,923 INFO L241 Difference]: Finished difference. Result has 260 places, 132 transitions, 4629 flow [2021-03-24 22:35:38,923 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4652, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4629, PETRI_PLACES=260, PETRI_TRANSITIONS=132} [2021-03-24 22:35:38,923 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 228 predicate places. [2021-03-24 22:35:38,923 INFO L480 AbstractCegarLoop]: Abstraction has has 260 places, 132 transitions, 4629 flow [2021-03-24 22:35:38,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:38,924 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:38,924 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:38,924 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-03-24 22:35:38,924 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:38,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:38,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1093618200, now seen corresponding path program 78 times [2021-03-24 22:35:38,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:38,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667822100] [2021-03-24 22:35:38,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:38,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:38,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:38,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:38,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:38,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:38,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:38,944 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:38,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:38,964 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:38,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:38,981 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:38,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:38,995 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 22:35:38,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667822100] [2021-03-24 22:35:38,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:38,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:38,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117984146] [2021-03-24 22:35:38,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:38,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:38,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:38,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:38,996 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:38,997 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 132 transitions, 4629 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:38,997 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:38,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:38,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:39,089 INFO L129 PetriNetUnfolder]: 0/371 cut-off events. [2021-03-24 22:35:39,089 INFO L130 PetriNetUnfolder]: For 11933/11956 co-relation queries the response was YES. [2021-03-24 22:35:39,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3036 conditions, 371 events. 0/371 cut-off events. For 11933/11956 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3541 event pairs, 0 based on Foata normal form. 5/376 useless extension candidates. Maximal degree in co-relation 0. Up to 100 conditions per place. [2021-03-24 22:35:39,090 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 76 selfloop transitions, 47 changer transitions 3/136 dead transitions. [2021-03-24 22:35:39,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 136 transitions, 4920 flow [2021-03-24 22:35:39,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:39,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:39,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-24 22:35:39,091 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-24 22:35:39,092 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-24 22:35:39,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-24 22:35:39,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:39,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-24 22:35:39,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,093 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,093 INFO L185 Difference]: Start difference. First operand has 260 places, 132 transitions, 4629 flow. Second operand 7 states and 306 transitions. [2021-03-24 22:35:39,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 136 transitions, 4920 flow [2021-03-24 22:35:39,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 136 transitions, 4826 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:39,131 INFO L241 Difference]: Finished difference. Result has 262 places, 129 transitions, 4516 flow [2021-03-24 22:35:39,131 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4541, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4516, PETRI_PLACES=262, PETRI_TRANSITIONS=129} [2021-03-24 22:35:39,131 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 230 predicate places. [2021-03-24 22:35:39,131 INFO L480 AbstractCegarLoop]: Abstraction has has 262 places, 129 transitions, 4516 flow [2021-03-24 22:35:39,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,131 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:39,131 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:39,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-03-24 22:35:39,131 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:39,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:39,132 INFO L82 PathProgramCache]: Analyzing trace with hash 609892508, now seen corresponding path program 79 times [2021-03-24 22:35:39,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:39,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594307065] [2021-03-24 22:35:39,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:39,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:39,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:39,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:39,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:39,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:39,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:39,152 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:39,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:39,164 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:39,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:39,180 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:39,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:39,197 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 22:35:39,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594307065] [2021-03-24 22:35:39,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:39,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:39,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714601528] [2021-03-24 22:35:39,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:39,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:39,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:39,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:39,198 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:39,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 129 transitions, 4516 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:39,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:39,198 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:39,285 INFO L129 PetriNetUnfolder]: 0/362 cut-off events. [2021-03-24 22:35:39,286 INFO L130 PetriNetUnfolder]: For 11553/11573 co-relation queries the response was YES. [2021-03-24 22:35:39,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2967 conditions, 362 events. 0/362 cut-off events. For 11553/11573 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3442 event pairs, 0 based on Foata normal form. 4/366 useless extension candidates. Maximal degree in co-relation 0. Up to 100 conditions per place. [2021-03-24 22:35:39,286 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 78 selfloop transitions, 42 changer transitions 2/132 dead transitions. [2021-03-24 22:35:39,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 132 transitions, 4795 flow [2021-03-24 22:35:39,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:39,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:39,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-24 22:35:39,287 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-24 22:35:39,287 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-24 22:35:39,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-24 22:35:39,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:39,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-24 22:35:39,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,289 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,289 INFO L185 Difference]: Start difference. First operand has 262 places, 129 transitions, 4516 flow. Second operand 7 states and 306 transitions. [2021-03-24 22:35:39,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 132 transitions, 4795 flow [2021-03-24 22:35:39,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 132 transitions, 4701 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:39,333 INFO L241 Difference]: Finished difference. Result has 261 places, 128 transitions, 4457 flow [2021-03-24 22:35:39,333 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4426, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4457, PETRI_PLACES=261, PETRI_TRANSITIONS=128} [2021-03-24 22:35:39,333 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 229 predicate places. [2021-03-24 22:35:39,333 INFO L480 AbstractCegarLoop]: Abstraction has has 261 places, 128 transitions, 4457 flow [2021-03-24 22:35:39,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,333 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:39,333 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:39,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-03-24 22:35:39,333 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:39,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:39,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1548607490, now seen corresponding path program 80 times [2021-03-24 22:35:39,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:39,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755796539] [2021-03-24 22:35:39,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:39,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:39,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:39,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:39,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:39,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:39,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:39,353 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:39,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:39,364 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:39,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:39,378 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:39,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:39,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:39,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755796539] [2021-03-24 22:35:39,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:39,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:39,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087721728] [2021-03-24 22:35:39,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:39,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:39,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:39,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:39,394 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:39,394 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 128 transitions, 4457 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:39,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:39,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:39,462 INFO L129 PetriNetUnfolder]: 0/354 cut-off events. [2021-03-24 22:35:39,462 INFO L130 PetriNetUnfolder]: For 11278/11301 co-relation queries the response was YES. [2021-03-24 22:35:39,462 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2914 conditions, 354 events. 0/354 cut-off events. For 11278/11301 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3339 event pairs, 0 based on Foata normal form. 5/359 useless extension candidates. Maximal degree in co-relation 0. Up to 100 conditions per place. [2021-03-24 22:35:39,463 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 76 selfloop transitions, 38 changer transitions 5/129 dead transitions. [2021-03-24 22:35:39,463 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 129 transitions, 4699 flow [2021-03-24 22:35:39,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:39,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:39,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 304 transitions. [2021-03-24 22:35:39,463 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8194070080862533 [2021-03-24 22:35:39,463 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 304 transitions. [2021-03-24 22:35:39,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 304 transitions. [2021-03-24 22:35:39,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:39,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 304 transitions. [2021-03-24 22:35:39,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.42857142857143) internal successors, (304), 7 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,464 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,464 INFO L185 Difference]: Start difference. First operand has 261 places, 128 transitions, 4457 flow. Second operand 7 states and 304 transitions. [2021-03-24 22:35:39,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 129 transitions, 4699 flow [2021-03-24 22:35:39,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 129 transitions, 4597 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:39,501 INFO L241 Difference]: Finished difference. Result has 261 places, 123 transitions, 4271 flow [2021-03-24 22:35:39,501 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4357, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4271, PETRI_PLACES=261, PETRI_TRANSITIONS=123} [2021-03-24 22:35:39,501 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 229 predicate places. [2021-03-24 22:35:39,501 INFO L480 AbstractCegarLoop]: Abstraction has has 261 places, 123 transitions, 4271 flow [2021-03-24 22:35:39,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,502 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:39,502 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:39,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-03-24 22:35:39,502 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:39,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:39,502 INFO L82 PathProgramCache]: Analyzing trace with hash -881931416, now seen corresponding path program 81 times [2021-03-24 22:35:39,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:39,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822021609] [2021-03-24 22:35:39,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:39,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:39,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:39,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:39,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:39,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:39,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:39,522 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:39,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:39,540 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:39,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:39,555 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:39,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:39,569 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 22:35:39,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822021609] [2021-03-24 22:35:39,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:39,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:39,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566458237] [2021-03-24 22:35:39,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:39,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:39,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:39,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:39,570 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:39,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 123 transitions, 4271 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:39,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:39,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:39,641 INFO L129 PetriNetUnfolder]: 0/343 cut-off events. [2021-03-24 22:35:39,642 INFO L130 PetriNetUnfolder]: For 10717/10723 co-relation queries the response was YES. [2021-03-24 22:35:39,642 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2801 conditions, 343 events. 0/343 cut-off events. For 10717/10723 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3222 event pairs, 0 based on Foata normal form. 3/346 useless extension candidates. Maximal degree in co-relation 0. Up to 59 conditions per place. [2021-03-24 22:35:39,642 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 64 selfloop transitions, 49 changer transitions 3/126 dead transitions. [2021-03-24 22:35:39,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 126 transitions, 4515 flow [2021-03-24 22:35:39,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:39,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:39,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:39,643 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:39,643 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:39,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:39,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:39,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:39,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,644 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,644 INFO L185 Difference]: Start difference. First operand has 261 places, 123 transitions, 4271 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:39,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 126 transitions, 4515 flow [2021-03-24 22:35:39,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 126 transitions, 4375 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-24 22:35:39,679 INFO L241 Difference]: Finished difference. Result has 257 places, 120 transitions, 4124 flow [2021-03-24 22:35:39,679 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4137, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4124, PETRI_PLACES=257, PETRI_TRANSITIONS=120} [2021-03-24 22:35:39,679 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 225 predicate places. [2021-03-24 22:35:39,679 INFO L480 AbstractCegarLoop]: Abstraction has has 257 places, 120 transitions, 4124 flow [2021-03-24 22:35:39,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,679 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:39,679 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:39,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-03-24 22:35:39,680 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:39,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:39,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1877583166, now seen corresponding path program 82 times [2021-03-24 22:35:39,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:39,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047786830] [2021-03-24 22:35:39,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:39,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:39,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:39,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:39,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:39,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:39,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:39,701 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:39,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:39,713 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:39,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:39,727 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:39,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:39,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:39,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047786830] [2021-03-24 22:35:39,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:39,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:39,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361914705] [2021-03-24 22:35:39,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:39,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:39,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:39,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:39,742 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:39,742 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 120 transitions, 4124 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:39,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:39,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:39,807 INFO L129 PetriNetUnfolder]: 0/334 cut-off events. [2021-03-24 22:35:39,807 INFO L130 PetriNetUnfolder]: For 10260/10260 co-relation queries the response was YES. [2021-03-24 22:35:39,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2706 conditions, 334 events. 0/334 cut-off events. For 10260/10260 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3095 event pairs, 0 based on Foata normal form. 1/335 useless extension candidates. Maximal degree in co-relation 0. Up to 63 conditions per place. [2021-03-24 22:35:39,807 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 64 selfloop transitions, 47 changer transitions 2/123 dead transitions. [2021-03-24 22:35:39,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 123 transitions, 4362 flow [2021-03-24 22:35:39,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:39,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:39,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:39,808 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:39,808 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:39,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:39,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:39,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:39,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,809 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,809 INFO L185 Difference]: Start difference. First operand has 257 places, 120 transitions, 4124 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:39,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 123 transitions, 4362 flow [2021-03-24 22:35:39,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 123 transitions, 4248 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-03-24 22:35:39,856 INFO L241 Difference]: Finished difference. Result has 256 places, 118 transitions, 4031 flow [2021-03-24 22:35:39,856 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4016, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4031, PETRI_PLACES=256, PETRI_TRANSITIONS=118} [2021-03-24 22:35:39,856 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 224 predicate places. [2021-03-24 22:35:39,856 INFO L480 AbstractCegarLoop]: Abstraction has has 256 places, 118 transitions, 4031 flow [2021-03-24 22:35:39,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,856 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:39,856 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:39,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-03-24 22:35:39,856 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:39,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:39,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1543643450, now seen corresponding path program 83 times [2021-03-24 22:35:39,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:39,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629856686] [2021-03-24 22:35:39,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:39,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:39,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:39,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:39,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:39,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:39,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:39,884 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:39,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:39,896 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:39,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:39,911 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:39,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:39,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:39,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629856686] [2021-03-24 22:35:39,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:39,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:39,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776582425] [2021-03-24 22:35:39,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:39,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:39,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:39,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:39,931 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:39,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 118 transitions, 4031 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:39,931 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:39,931 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:39,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:40,013 INFO L129 PetriNetUnfolder]: 0/326 cut-off events. [2021-03-24 22:35:40,013 INFO L130 PetriNetUnfolder]: For 10091/10097 co-relation queries the response was YES. [2021-03-24 22:35:40,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2642 conditions, 326 events. 0/326 cut-off events. For 10091/10097 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2991 event pairs, 0 based on Foata normal form. 3/329 useless extension candidates. Maximal degree in co-relation 0. Up to 63 conditions per place. [2021-03-24 22:35:40,014 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 64 selfloop transitions, 44 changer transitions 3/121 dead transitions. [2021-03-24 22:35:40,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 121 transitions, 4265 flow [2021-03-24 22:35:40,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:40,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:40,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:40,014 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:40,014 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:40,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:40,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:40,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:40,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,015 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,015 INFO L185 Difference]: Start difference. First operand has 256 places, 118 transitions, 4031 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:40,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 121 transitions, 4265 flow [2021-03-24 22:35:40,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 121 transitions, 4143 flow, removed 6 selfloop flow, removed 7 redundant places. [2021-03-24 22:35:40,048 INFO L241 Difference]: Finished difference. Result has 254 places, 115 transitions, 3902 flow [2021-03-24 22:35:40,048 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3915, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3902, PETRI_PLACES=254, PETRI_TRANSITIONS=115} [2021-03-24 22:35:40,048 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 222 predicate places. [2021-03-24 22:35:40,048 INFO L480 AbstractCegarLoop]: Abstraction has has 254 places, 115 transitions, 3902 flow [2021-03-24 22:35:40,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,049 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:40,049 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:40,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-03-24 22:35:40,049 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:40,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:40,049 INFO L82 PathProgramCache]: Analyzing trace with hash 354399346, now seen corresponding path program 84 times [2021-03-24 22:35:40,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:40,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508089404] [2021-03-24 22:35:40,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:40,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:40,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:40,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:40,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:40,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:40,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:40,073 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:40,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:40,085 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:40,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:40,101 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:40,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:40,117 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 22:35:40,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508089404] [2021-03-24 22:35:40,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:40,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:40,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706519151] [2021-03-24 22:35:40,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:40,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:40,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:40,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:40,118 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:40,119 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 115 transitions, 3902 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,119 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:40,119 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:40,119 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:40,196 INFO L129 PetriNetUnfolder]: 0/317 cut-off events. [2021-03-24 22:35:40,196 INFO L130 PetriNetUnfolder]: For 9702/9702 co-relation queries the response was YES. [2021-03-24 22:35:40,196 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2559 conditions, 317 events. 0/317 cut-off events. For 9702/9702 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2885 event pairs, 0 based on Foata normal form. 1/318 useless extension candidates. Maximal degree in co-relation 0. Up to 50 conditions per place. [2021-03-24 22:35:40,197 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 57 selfloop transitions, 49 changer transitions 2/118 dead transitions. [2021-03-24 22:35:40,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 118 transitions, 4130 flow [2021-03-24 22:35:40,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:40,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:40,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:40,198 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:40,198 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:40,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:40,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:40,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:40,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,199 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,199 INFO L185 Difference]: Start difference. First operand has 254 places, 115 transitions, 3902 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:40,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 118 transitions, 4130 flow [2021-03-24 22:35:40,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 118 transitions, 4046 flow, removed 4 selfloop flow, removed 6 redundant places. [2021-03-24 22:35:40,229 INFO L241 Difference]: Finished difference. Result has 253 places, 113 transitions, 3842 flow [2021-03-24 22:35:40,229 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3824, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3842, PETRI_PLACES=253, PETRI_TRANSITIONS=113} [2021-03-24 22:35:40,229 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 221 predicate places. [2021-03-24 22:35:40,229 INFO L480 AbstractCegarLoop]: Abstraction has has 253 places, 113 transitions, 3842 flow [2021-03-24 22:35:40,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,230 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:40,230 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:40,230 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-03-24 22:35:40,230 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:40,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:40,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1429379130, now seen corresponding path program 85 times [2021-03-24 22:35:40,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:40,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609883118] [2021-03-24 22:35:40,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:40,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:40,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:40,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:40,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:40,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:40,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:40,248 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:40,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:40,258 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:40,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:40,275 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:40,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:40,288 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 22:35:40,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609883118] [2021-03-24 22:35:40,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:40,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:40,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547212345] [2021-03-24 22:35:40,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:40,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:40,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:40,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:40,289 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:40,289 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 113 transitions, 3842 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,290 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:40,290 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:40,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:40,369 INFO L129 PetriNetUnfolder]: 0/311 cut-off events. [2021-03-24 22:35:40,369 INFO L130 PetriNetUnfolder]: For 9615/9615 co-relation queries the response was YES. [2021-03-24 22:35:40,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2515 conditions, 311 events. 0/311 cut-off events. For 9615/9615 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2806 event pairs, 0 based on Foata normal form. 1/312 useless extension candidates. Maximal degree in co-relation 0. Up to 49 conditions per place. [2021-03-24 22:35:40,370 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 56 selfloop transitions, 47 changer transitions 3/116 dead transitions. [2021-03-24 22:35:40,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 116 transitions, 4066 flow [2021-03-24 22:35:40,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:40,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:40,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:40,371 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:40,371 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:40,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:40,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:40,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:40,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,371 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,372 INFO L185 Difference]: Start difference. First operand has 253 places, 113 transitions, 3842 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:40,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 116 transitions, 4066 flow [2021-03-24 22:35:40,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 116 transitions, 3967 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 22:35:40,402 INFO L241 Difference]: Finished difference. Result has 252 places, 110 transitions, 3729 flow [2021-03-24 22:35:40,402 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3749, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3729, PETRI_PLACES=252, PETRI_TRANSITIONS=110} [2021-03-24 22:35:40,402 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 220 predicate places. [2021-03-24 22:35:40,402 INFO L480 AbstractCegarLoop]: Abstraction has has 252 places, 110 transitions, 3729 flow [2021-03-24 22:35:40,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,402 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:40,402 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:40,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-03-24 22:35:40,403 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:40,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:40,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1306557062, now seen corresponding path program 86 times [2021-03-24 22:35:40,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:40,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953025254] [2021-03-24 22:35:40,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:40,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:40,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:40,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:40,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:40,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:40,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:40,425 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:40,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:40,436 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:40,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:40,452 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:40,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:40,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:40,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953025254] [2021-03-24 22:35:40,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:40,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:40,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705383167] [2021-03-24 22:35:40,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:40,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:40,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:40,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:40,469 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:40,470 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 110 transitions, 3729 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,470 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:40,470 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:40,470 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:40,547 INFO L129 PetriNetUnfolder]: 0/303 cut-off events. [2021-03-24 22:35:40,548 INFO L130 PetriNetUnfolder]: For 9181/9187 co-relation queries the response was YES. [2021-03-24 22:35:40,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2449 conditions, 303 events. 0/303 cut-off events. For 9181/9187 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2719 event pairs, 0 based on Foata normal form. 3/306 useless extension candidates. Maximal degree in co-relation 0. Up to 49 conditions per place. [2021-03-24 22:35:40,549 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 53 selfloop transitions, 46 changer transitions 4/113 dead transitions. [2021-03-24 22:35:40,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 113 transitions, 3947 flow [2021-03-24 22:35:40,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:40,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:40,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:40,550 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:40,550 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:40,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:40,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:40,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:40,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,551 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,551 INFO L185 Difference]: Start difference. First operand has 252 places, 110 transitions, 3729 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:40,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 113 transitions, 3947 flow [2021-03-24 22:35:40,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 113 transitions, 3817 flow, removed 5 selfloop flow, removed 8 redundant places. [2021-03-24 22:35:40,592 INFO L241 Difference]: Finished difference. Result has 246 places, 106 transitions, 3562 flow [2021-03-24 22:35:40,592 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3605, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3562, PETRI_PLACES=246, PETRI_TRANSITIONS=106} [2021-03-24 22:35:40,592 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 214 predicate places. [2021-03-24 22:35:40,592 INFO L480 AbstractCegarLoop]: Abstraction has has 246 places, 106 transitions, 3562 flow [2021-03-24 22:35:40,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,593 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:40,593 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:40,593 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-03-24 22:35:40,593 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:40,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:40,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1317060166, now seen corresponding path program 87 times [2021-03-24 22:35:40,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:40,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816463314] [2021-03-24 22:35:40,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:40,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:40,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:40,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:40,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:40,611 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:40,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:40,626 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:40,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:40,646 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:40,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:40,663 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:40,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:40,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:40,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816463314] [2021-03-24 22:35:40,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:40,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:40,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377393292] [2021-03-24 22:35:40,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:40,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:40,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:40,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:40,679 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:40,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 106 transitions, 3562 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:40,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:40,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:40,736 INFO L129 PetriNetUnfolder]: 0/293 cut-off events. [2021-03-24 22:35:40,736 INFO L130 PetriNetUnfolder]: For 8576/8582 co-relation queries the response was YES. [2021-03-24 22:35:40,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2353 conditions, 293 events. 0/293 cut-off events. For 8576/8582 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2596 event pairs, 0 based on Foata normal form. 3/296 useless extension candidates. Maximal degree in co-relation 0. Up to 47 conditions per place. [2021-03-24 22:35:40,737 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 52 selfloop transitions, 45 changer transitions 2/109 dead transitions. [2021-03-24 22:35:40,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 109 transitions, 3772 flow [2021-03-24 22:35:40,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:40,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:40,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:40,738 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:40,738 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:40,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:40,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:40,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:40,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,739 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,739 INFO L185 Difference]: Start difference. First operand has 246 places, 106 transitions, 3562 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:40,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 109 transitions, 3772 flow [2021-03-24 22:35:40,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 109 transitions, 3591 flow, removed 7 selfloop flow, removed 8 redundant places. [2021-03-24 22:35:40,764 INFO L241 Difference]: Finished difference. Result has 240 places, 104 transitions, 3394 flow [2021-03-24 22:35:40,765 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3387, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3394, PETRI_PLACES=240, PETRI_TRANSITIONS=104} [2021-03-24 22:35:40,765 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 208 predicate places. [2021-03-24 22:35:40,765 INFO L480 AbstractCegarLoop]: Abstraction has has 240 places, 104 transitions, 3394 flow [2021-03-24 22:35:40,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,765 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:40,765 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:40,765 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-03-24 22:35:40,765 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:40,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:40,765 INFO L82 PathProgramCache]: Analyzing trace with hash 282788324, now seen corresponding path program 88 times [2021-03-24 22:35:40,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:40,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962338464] [2021-03-24 22:35:40,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:40,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:40,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:40,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:40,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:40,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:40,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:40,785 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:40,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:40,796 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:40,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:40,813 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:40,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:40,829 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 22:35:40,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962338464] [2021-03-24 22:35:40,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:40,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:40,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003671291] [2021-03-24 22:35:40,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:40,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:40,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:40,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:40,830 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:40,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 104 transitions, 3394 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:40,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:40,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:40,906 INFO L129 PetriNetUnfolder]: 0/286 cut-off events. [2021-03-24 22:35:40,906 INFO L130 PetriNetUnfolder]: For 7613/7613 co-relation queries the response was YES. [2021-03-24 22:35:40,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2260 conditions, 286 events. 0/286 cut-off events. For 7613/7613 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2500 event pairs, 0 based on Foata normal form. 1/287 useless extension candidates. Maximal degree in co-relation 0. Up to 49 conditions per place. [2021-03-24 22:35:40,906 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 54 selfloop transitions, 41 changer transitions 2/107 dead transitions. [2021-03-24 22:35:40,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 107 transitions, 3600 flow [2021-03-24 22:35:40,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:40,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:40,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:40,907 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:40,907 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:40,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:40,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:40,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:40,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,908 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,908 INFO L185 Difference]: Start difference. First operand has 240 places, 104 transitions, 3394 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:40,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 107 transitions, 3600 flow [2021-03-24 22:35:40,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 107 transitions, 3521 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:40,938 INFO L241 Difference]: Finished difference. Result has 240 places, 102 transitions, 3322 flow [2021-03-24 22:35:40,938 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3321, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3322, PETRI_PLACES=240, PETRI_TRANSITIONS=102} [2021-03-24 22:35:40,938 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 208 predicate places. [2021-03-24 22:35:40,938 INFO L480 AbstractCegarLoop]: Abstraction has has 240 places, 102 transitions, 3322 flow [2021-03-24 22:35:40,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:40,938 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:40,939 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:40,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-03-24 22:35:40,939 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:40,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:40,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1341013694, now seen corresponding path program 89 times [2021-03-24 22:35:40,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:40,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340554188] [2021-03-24 22:35:40,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:40,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:40,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:40,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:40,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:40,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:40,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:40,966 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:40,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:40,978 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:40,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:40,995 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:40,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:41,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:41,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340554188] [2021-03-24 22:35:41,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:41,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:41,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238895877] [2021-03-24 22:35:41,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:41,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:41,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:41,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:41,016 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:41,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 102 transitions, 3322 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:41,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:41,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:41,111 INFO L129 PetriNetUnfolder]: 0/279 cut-off events. [2021-03-24 22:35:41,111 INFO L130 PetriNetUnfolder]: For 7345/7351 co-relation queries the response was YES. [2021-03-24 22:35:41,111 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2220 conditions, 279 events. 0/279 cut-off events. For 7345/7351 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2413 event pairs, 0 based on Foata normal form. 3/282 useless extension candidates. Maximal degree in co-relation 0. Up to 49 conditions per place. [2021-03-24 22:35:41,112 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 54 selfloop transitions, 37 changer transitions 3/104 dead transitions. [2021-03-24 22:35:41,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 104 transitions, 3518 flow [2021-03-24 22:35:41,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:41,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:41,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-24 22:35:41,113 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-24 22:35:41,113 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-24 22:35:41,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-24 22:35:41,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:41,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-24 22:35:41,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,114 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,114 INFO L185 Difference]: Start difference. First operand has 240 places, 102 transitions, 3322 flow. Second operand 7 states and 306 transitions. [2021-03-24 22:35:41,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 104 transitions, 3518 flow [2021-03-24 22:35:41,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 104 transitions, 3454 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:41,137 INFO L241 Difference]: Finished difference. Result has 240 places, 99 transitions, 3227 flow [2021-03-24 22:35:41,137 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3262, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3227, PETRI_PLACES=240, PETRI_TRANSITIONS=99} [2021-03-24 22:35:41,137 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 208 predicate places. [2021-03-24 22:35:41,137 INFO L480 AbstractCegarLoop]: Abstraction has has 240 places, 99 transitions, 3227 flow [2021-03-24 22:35:41,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,137 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:41,137 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:41,137 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-03-24 22:35:41,138 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:41,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:41,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1662178528, now seen corresponding path program 90 times [2021-03-24 22:35:41,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:41,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843424803] [2021-03-24 22:35:41,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:41,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:41,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:41,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:41,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:41,150 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:41,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:41,163 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:41,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:41,188 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:41,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:41,204 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:41,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:41,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843424803] [2021-03-24 22:35:41,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:41,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:41,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229061283] [2021-03-24 22:35:41,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:41,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:41,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:41,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:41,218 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:41,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 99 transitions, 3227 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:41,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:41,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:41,273 INFO L129 PetriNetUnfolder]: 0/271 cut-off events. [2021-03-24 22:35:41,273 INFO L130 PetriNetUnfolder]: For 7318/7324 co-relation queries the response was YES. [2021-03-24 22:35:41,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2153 conditions, 271 events. 0/271 cut-off events. For 7318/7324 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2309 event pairs, 0 based on Foata normal form. 3/274 useless extension candidates. Maximal degree in co-relation 0. Up to 49 conditions per place. [2021-03-24 22:35:41,274 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 51 selfloop transitions, 38 changer transitions 3/102 dead transitions. [2021-03-24 22:35:41,274 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 102 transitions, 3423 flow [2021-03-24 22:35:41,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:41,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:41,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:41,276 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:41,276 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:41,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:41,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:41,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:41,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,277 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,277 INFO L185 Difference]: Start difference. First operand has 240 places, 99 transitions, 3227 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:41,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 102 transitions, 3423 flow [2021-03-24 22:35:41,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 102 transitions, 3281 flow, removed 10 selfloop flow, removed 7 redundant places. [2021-03-24 22:35:41,298 INFO L241 Difference]: Finished difference. Result has 235 places, 96 transitions, 3070 flow [2021-03-24 22:35:41,298 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3091, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3070, PETRI_PLACES=235, PETRI_TRANSITIONS=96} [2021-03-24 22:35:41,298 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 203 predicate places. [2021-03-24 22:35:41,298 INFO L480 AbstractCegarLoop]: Abstraction has has 235 places, 96 transitions, 3070 flow [2021-03-24 22:35:41,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,299 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:41,299 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:41,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-03-24 22:35:41,299 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:41,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:41,299 INFO L82 PathProgramCache]: Analyzing trace with hash 871123010, now seen corresponding path program 91 times [2021-03-24 22:35:41,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:41,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419540341] [2021-03-24 22:35:41,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:41,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:41,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:41,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:41,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:41,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:41,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:41,322 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:41,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:41,343 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:41,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:41,360 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:41,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:41,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:41,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419540341] [2021-03-24 22:35:41,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:41,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:41,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518386256] [2021-03-24 22:35:41,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:41,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:41,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:41,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:41,377 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:41,377 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 96 transitions, 3070 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,377 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:41,377 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:41,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:41,436 INFO L129 PetriNetUnfolder]: 0/262 cut-off events. [2021-03-24 22:35:41,436 INFO L130 PetriNetUnfolder]: For 6540/6540 co-relation queries the response was YES. [2021-03-24 22:35:41,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2067 conditions, 262 events. 0/262 cut-off events. For 6540/6540 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2210 event pairs, 0 based on Foata normal form. 1/263 useless extension candidates. Maximal degree in co-relation 0. Up to 46 conditions per place. [2021-03-24 22:35:41,437 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 45 selfloop transitions, 42 changer transitions 2/99 dead transitions. [2021-03-24 22:35:41,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 99 transitions, 3260 flow [2021-03-24 22:35:41,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:41,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:41,438 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:41,438 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:41,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:41,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:41,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:41,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,438 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,439 INFO L185 Difference]: Start difference. First operand has 235 places, 96 transitions, 3070 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:41,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 99 transitions, 3260 flow [2021-03-24 22:35:41,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 99 transitions, 3171 flow, removed 4 selfloop flow, removed 6 redundant places. [2021-03-24 22:35:41,458 INFO L241 Difference]: Finished difference. Result has 234 places, 94 transitions, 2992 flow [2021-03-24 22:35:41,458 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2987, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2992, PETRI_PLACES=234, PETRI_TRANSITIONS=94} [2021-03-24 22:35:41,459 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 202 predicate places. [2021-03-24 22:35:41,459 INFO L480 AbstractCegarLoop]: Abstraction has has 234 places, 94 transitions, 2992 flow [2021-03-24 22:35:41,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,459 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:41,459 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:41,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-03-24 22:35:41,459 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:41,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:41,459 INFO L82 PathProgramCache]: Analyzing trace with hash 719846108, now seen corresponding path program 92 times [2021-03-24 22:35:41,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:41,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209785791] [2021-03-24 22:35:41,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:41,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:41,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:41,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:41,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:41,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:41,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:41,485 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:41,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:41,502 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:41,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:41,516 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:41,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:41,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:41,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209785791] [2021-03-24 22:35:41,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:41,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:41,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135785759] [2021-03-24 22:35:41,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:41,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:41,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:41,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:41,531 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:41,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 94 transitions, 2992 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:41,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:41,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:41,595 INFO L129 PetriNetUnfolder]: 0/255 cut-off events. [2021-03-24 22:35:41,595 INFO L130 PetriNetUnfolder]: For 6470/6476 co-relation queries the response was YES. [2021-03-24 22:35:41,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2013 conditions, 255 events. 0/255 cut-off events. For 6470/6476 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2132 event pairs, 0 based on Foata normal form. 3/258 useless extension candidates. Maximal degree in co-relation 0. Up to 46 conditions per place. [2021-03-24 22:35:41,595 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 45 selfloop transitions, 37 changer transitions 4/96 dead transitions. [2021-03-24 22:35:41,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 96 transitions, 3172 flow [2021-03-24 22:35:41,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:41,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-24 22:35:41,596 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-24 22:35:41,596 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-24 22:35:41,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-24 22:35:41,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:41,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-24 22:35:41,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,597 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,597 INFO L185 Difference]: Start difference. First operand has 234 places, 94 transitions, 2992 flow. Second operand 7 states and 306 transitions. [2021-03-24 22:35:41,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 96 transitions, 3172 flow [2021-03-24 22:35:41,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 96 transitions, 3094 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:41,616 INFO L241 Difference]: Finished difference. Result has 231 places, 90 transitions, 2864 flow [2021-03-24 22:35:41,616 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2918, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2864, PETRI_PLACES=231, PETRI_TRANSITIONS=90} [2021-03-24 22:35:41,616 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 199 predicate places. [2021-03-24 22:35:41,616 INFO L480 AbstractCegarLoop]: Abstraction has has 231 places, 90 transitions, 2864 flow [2021-03-24 22:35:41,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,616 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:41,616 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:41,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-03-24 22:35:41,616 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:41,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:41,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1761422176, now seen corresponding path program 93 times [2021-03-24 22:35:41,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:41,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801582754] [2021-03-24 22:35:41,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:41,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:41,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:41,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:41,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:41,630 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:41,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:41,644 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:41,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:41,664 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:41,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:41,680 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:41,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:41,693 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 22:35:41,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801582754] [2021-03-24 22:35:41,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:41,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:41,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326309894] [2021-03-24 22:35:41,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:41,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:41,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:41,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:41,694 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:41,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 90 transitions, 2864 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,695 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:41,695 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:41,695 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:41,755 INFO L129 PetriNetUnfolder]: 0/245 cut-off events. [2021-03-24 22:35:41,755 INFO L130 PetriNetUnfolder]: For 5931/5937 co-relation queries the response was YES. [2021-03-24 22:35:41,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1944 conditions, 245 events. 0/245 cut-off events. For 5931/5937 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2023 event pairs, 0 based on Foata normal form. 3/248 useless extension candidates. Maximal degree in co-relation 0. Up to 40 conditions per place. [2021-03-24 22:35:41,756 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 41 selfloop transitions, 39 changer transitions 3/93 dead transitions. [2021-03-24 22:35:41,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 93 transitions, 3042 flow [2021-03-24 22:35:41,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:41,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:41,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-03-24 22:35:41,756 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2021-03-24 22:35:41,757 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-03-24 22:35:41,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-03-24 22:35:41,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:41,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-03-24 22:35:41,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,757 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,757 INFO L185 Difference]: Start difference. First operand has 231 places, 90 transitions, 2864 flow. Second operand 7 states and 307 transitions. [2021-03-24 22:35:41,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 93 transitions, 3042 flow [2021-03-24 22:35:41,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 93 transitions, 2935 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-03-24 22:35:41,776 INFO L241 Difference]: Finished difference. Result has 228 places, 87 transitions, 2739 flow [2021-03-24 22:35:41,776 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2763, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2739, PETRI_PLACES=228, PETRI_TRANSITIONS=87} [2021-03-24 22:35:41,776 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 196 predicate places. [2021-03-24 22:35:41,776 INFO L480 AbstractCegarLoop]: Abstraction has has 228 places, 87 transitions, 2739 flow [2021-03-24 22:35:41,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,776 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:41,776 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:41,776 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-03-24 22:35:41,776 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:41,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:41,776 INFO L82 PathProgramCache]: Analyzing trace with hash 172773532, now seen corresponding path program 94 times [2021-03-24 22:35:41,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:41,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625117196] [2021-03-24 22:35:41,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:41,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:41,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:41,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:41,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:41,791 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:41,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:41,805 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:41,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:41,822 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:41,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:41,839 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:41,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:41,854 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 22:35:41,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625117196] [2021-03-24 22:35:41,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:41,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:41,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740469852] [2021-03-24 22:35:41,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:41,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:41,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:41,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:41,856 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:41,856 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 87 transitions, 2739 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:41,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:41,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:41,917 INFO L129 PetriNetUnfolder]: 0/236 cut-off events. [2021-03-24 22:35:41,917 INFO L130 PetriNetUnfolder]: For 5480/5480 co-relation queries the response was YES. [2021-03-24 22:35:41,917 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1866 conditions, 236 events. 0/236 cut-off events. For 5480/5480 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1909 event pairs, 0 based on Foata normal form. 1/237 useless extension candidates. Maximal degree in co-relation 0. Up to 40 conditions per place. [2021-03-24 22:35:41,918 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 41 selfloop transitions, 37 changer transitions 2/90 dead transitions. [2021-03-24 22:35:41,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 90 transitions, 2911 flow [2021-03-24 22:35:41,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:41,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:41,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-24 22:35:41,919 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-24 22:35:41,919 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-24 22:35:41,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-24 22:35:41,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:41,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-24 22:35:41,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,920 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,920 INFO L185 Difference]: Start difference. First operand has 228 places, 87 transitions, 2739 flow. Second operand 7 states and 306 transitions. [2021-03-24 22:35:41,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 90 transitions, 2911 flow [2021-03-24 22:35:41,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 90 transitions, 2774 flow, removed 4 selfloop flow, removed 8 redundant places. [2021-03-24 22:35:41,945 INFO L241 Difference]: Finished difference. Result has 219 places, 85 transitions, 2609 flow [2021-03-24 22:35:41,946 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2608, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2609, PETRI_PLACES=219, PETRI_TRANSITIONS=85} [2021-03-24 22:35:41,946 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 187 predicate places. [2021-03-24 22:35:41,946 INFO L480 AbstractCegarLoop]: Abstraction has has 219 places, 85 transitions, 2609 flow [2021-03-24 22:35:41,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:41,946 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:41,946 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:41,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-03-24 22:35:41,946 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:41,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:41,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1854915744, now seen corresponding path program 95 times [2021-03-24 22:35:41,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:41,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877479011] [2021-03-24 22:35:41,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:41,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:41,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:41,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:41,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:41,962 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:41,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:41,976 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:41,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:41,995 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:41,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:42,011 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:42,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:42,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:42,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877479011] [2021-03-24 22:35:42,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:42,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:42,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094973099] [2021-03-24 22:35:42,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:42,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:42,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:42,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:42,035 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:42,035 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 85 transitions, 2609 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,035 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:42,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:42,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:42,114 INFO L129 PetriNetUnfolder]: 0/228 cut-off events. [2021-03-24 22:35:42,114 INFO L130 PetriNetUnfolder]: For 5180/5186 co-relation queries the response was YES. [2021-03-24 22:35:42,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1776 conditions, 228 events. 0/228 cut-off events. For 5180/5186 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1833 event pairs, 0 based on Foata normal form. 3/231 useless extension candidates. Maximal degree in co-relation 0. Up to 40 conditions per place. [2021-03-24 22:35:42,115 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 38 selfloop transitions, 36 changer transitions 4/88 dead transitions. [2021-03-24 22:35:42,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 88 transitions, 2777 flow [2021-03-24 22:35:42,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:42,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:42,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2021-03-24 22:35:42,116 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8221024258760108 [2021-03-24 22:35:42,116 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2021-03-24 22:35:42,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2021-03-24 22:35:42,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:42,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2021-03-24 22:35:42,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.57142857142857) internal successors, (305), 7 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,117 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,117 INFO L185 Difference]: Start difference. First operand has 219 places, 85 transitions, 2609 flow. Second operand 7 states and 305 transitions. [2021-03-24 22:35:42,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 88 transitions, 2777 flow [2021-03-24 22:35:42,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 88 transitions, 2623 flow, removed 9 selfloop flow, removed 10 redundant places. [2021-03-24 22:35:42,140 INFO L241 Difference]: Finished difference. Result has 208 places, 81 transitions, 2411 flow [2021-03-24 22:35:42,140 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2461, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2411, PETRI_PLACES=208, PETRI_TRANSITIONS=81} [2021-03-24 22:35:42,140 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 176 predicate places. [2021-03-24 22:35:42,140 INFO L480 AbstractCegarLoop]: Abstraction has has 208 places, 81 transitions, 2411 flow [2021-03-24 22:35:42,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,141 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:42,141 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:42,141 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-03-24 22:35:42,141 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:42,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:42,141 INFO L82 PathProgramCache]: Analyzing trace with hash 732707168, now seen corresponding path program 96 times [2021-03-24 22:35:42,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:42,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160656496] [2021-03-24 22:35:42,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:42,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:42,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:42,153 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:42,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:42,161 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:42,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:42,173 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:42,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:42,193 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:42,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:42,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:42,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160656496] [2021-03-24 22:35:42,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:42,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:42,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481378462] [2021-03-24 22:35:42,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:42,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:42,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:42,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:42,212 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:42,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 81 transitions, 2411 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:42,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:42,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:42,281 INFO L129 PetriNetUnfolder]: 0/218 cut-off events. [2021-03-24 22:35:42,281 INFO L130 PetriNetUnfolder]: For 4731/4737 co-relation queries the response was YES. [2021-03-24 22:35:42,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1638 conditions, 218 events. 0/218 cut-off events. For 4731/4737 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1726 event pairs, 0 based on Foata normal form. 3/221 useless extension candidates. Maximal degree in co-relation 0. Up to 64 conditions per place. [2021-03-24 22:35:42,282 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 52 selfloop transitions, 21 changer transitions 2/85 dead transitions. [2021-03-24 22:35:42,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 85 transitions, 2621 flow [2021-03-24 22:35:42,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:42,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:42,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-24 22:35:42,282 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-24 22:35:42,282 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-24 22:35:42,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-24 22:35:42,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:42,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-24 22:35:42,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,284 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,284 INFO L185 Difference]: Start difference. First operand has 208 places, 81 transitions, 2411 flow. Second operand 7 states and 306 transitions. [2021-03-24 22:35:42,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 85 transitions, 2621 flow [2021-03-24 22:35:42,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 85 transitions, 2304 flow, removed 11 selfloop flow, removed 18 redundant places. [2021-03-24 22:35:42,300 INFO L241 Difference]: Finished difference. Result has 182 places, 81 transitions, 2138 flow [2021-03-24 22:35:42,300 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2138, PETRI_PLACES=182, PETRI_TRANSITIONS=81} [2021-03-24 22:35:42,300 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 150 predicate places. [2021-03-24 22:35:42,300 INFO L480 AbstractCegarLoop]: Abstraction has has 182 places, 81 transitions, 2138 flow [2021-03-24 22:35:42,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,300 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:42,300 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:42,300 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-03-24 22:35:42,300 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:42,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:42,300 INFO L82 PathProgramCache]: Analyzing trace with hash 861745350, now seen corresponding path program 97 times [2021-03-24 22:35:42,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:42,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044336090] [2021-03-24 22:35:42,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:42,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:42,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:42,314 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:42,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:42,321 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:42,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:42,331 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:42,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:42,345 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:42,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:42,359 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 22:35:42,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044336090] [2021-03-24 22:35:42,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:42,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:42,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814754016] [2021-03-24 22:35:42,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:42,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:42,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:42,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:42,360 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:42,360 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 81 transitions, 2138 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,360 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:42,360 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:42,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:42,404 INFO L129 PetriNetUnfolder]: 0/210 cut-off events. [2021-03-24 22:35:42,404 INFO L130 PetriNetUnfolder]: For 3201/3201 co-relation queries the response was YES. [2021-03-24 22:35:42,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1486 conditions, 210 events. 0/210 cut-off events. For 3201/3201 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1642 event pairs, 0 based on Foata normal form. 1/211 useless extension candidates. Maximal degree in co-relation 0. Up to 64 conditions per place. [2021-03-24 22:35:42,404 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 51 selfloop transitions, 19 changer transitions 3/83 dead transitions. [2021-03-24 22:35:42,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 83 transitions, 2292 flow [2021-03-24 22:35:42,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:42,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:42,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-24 22:35:42,407 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-24 22:35:42,407 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-24 22:35:42,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-24 22:35:42,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:42,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-24 22:35:42,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,408 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,408 INFO L185 Difference]: Start difference. First operand has 182 places, 81 transitions, 2138 flow. Second operand 7 states and 306 transitions. [2021-03-24 22:35:42,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 83 transitions, 2292 flow [2021-03-24 22:35:42,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 83 transitions, 2234 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:42,419 INFO L241 Difference]: Finished difference. Result has 184 places, 78 transitions, 2037 flow [2021-03-24 22:35:42,419 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2084, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2037, PETRI_PLACES=184, PETRI_TRANSITIONS=78} [2021-03-24 22:35:42,419 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 152 predicate places. [2021-03-24 22:35:42,419 INFO L480 AbstractCegarLoop]: Abstraction has has 184 places, 78 transitions, 2037 flow [2021-03-24 22:35:42,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,419 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:42,419 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:42,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-03-24 22:35:42,420 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:42,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:42,420 INFO L82 PathProgramCache]: Analyzing trace with hash 2111508008, now seen corresponding path program 98 times [2021-03-24 22:35:42,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:42,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074874986] [2021-03-24 22:35:42,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:42,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:42,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:42,433 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:42,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:42,440 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:42,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:42,450 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:42,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:42,464 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:42,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:42,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:42,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074874986] [2021-03-24 22:35:42,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:42,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:42,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292700263] [2021-03-24 22:35:42,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:42,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:42,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:42,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:42,480 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:42,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 78 transitions, 2037 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:42,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:42,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:42,535 INFO L129 PetriNetUnfolder]: 0/201 cut-off events. [2021-03-24 22:35:42,535 INFO L130 PetriNetUnfolder]: For 2981/2981 co-relation queries the response was YES. [2021-03-24 22:35:42,535 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 201 events. 0/201 cut-off events. For 2981/2981 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1540 event pairs, 0 based on Foata normal form. 1/202 useless extension candidates. Maximal degree in co-relation 0. Up to 64 conditions per place. [2021-03-24 22:35:42,536 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 50 selfloop transitions, 18 changer transitions 2/80 dead transitions. [2021-03-24 22:35:42,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 80 transitions, 2185 flow [2021-03-24 22:35:42,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:42,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:42,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-03-24 22:35:42,536 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2021-03-24 22:35:42,536 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-03-24 22:35:42,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-03-24 22:35:42,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:42,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-03-24 22:35:42,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,537 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,537 INFO L185 Difference]: Start difference. First operand has 184 places, 78 transitions, 2037 flow. Second operand 7 states and 306 transitions. [2021-03-24 22:35:42,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 80 transitions, 2185 flow [2021-03-24 22:35:42,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 80 transitions, 2146 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:42,548 INFO L241 Difference]: Finished difference. Result has 186 places, 76 transitions, 1968 flow [2021-03-24 22:35:42,548 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2002, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1968, PETRI_PLACES=186, PETRI_TRANSITIONS=76} [2021-03-24 22:35:42,548 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 154 predicate places. [2021-03-24 22:35:42,548 INFO L480 AbstractCegarLoop]: Abstraction has has 186 places, 76 transitions, 1968 flow [2021-03-24 22:35:42,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,549 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:42,549 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:42,549 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-03-24 22:35:42,549 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:42,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:42,549 INFO L82 PathProgramCache]: Analyzing trace with hash -50720424, now seen corresponding path program 99 times [2021-03-24 22:35:42,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:42,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693215389] [2021-03-24 22:35:42,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:42,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:42,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:42,571 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:42,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:42,583 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:42,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:42,594 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:42,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:42,609 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:42,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:42,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693215389] [2021-03-24 22:35:42,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:42,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:42,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251649576] [2021-03-24 22:35:42,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:42,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:42,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:42,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:42,624 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:42,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 76 transitions, 1968 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,624 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:42,624 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:42,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:42,676 INFO L129 PetriNetUnfolder]: 0/194 cut-off events. [2021-03-24 22:35:42,676 INFO L130 PetriNetUnfolder]: For 2888/2894 co-relation queries the response was YES. [2021-03-24 22:35:42,676 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1374 conditions, 194 events. 0/194 cut-off events. For 2888/2894 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1463 event pairs, 0 based on Foata normal form. 3/197 useless extension candidates. Maximal degree in co-relation 0. Up to 64 conditions per place. [2021-03-24 22:35:42,676 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 48 selfloop transitions, 16 changer transitions 3/77 dead transitions. [2021-03-24 22:35:42,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 77 transitions, 2106 flow [2021-03-24 22:35:42,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:42,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:42,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 304 transitions. [2021-03-24 22:35:42,677 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8194070080862533 [2021-03-24 22:35:42,677 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 304 transitions. [2021-03-24 22:35:42,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 304 transitions. [2021-03-24 22:35:42,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:42,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 304 transitions. [2021-03-24 22:35:42,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.42857142857143) internal successors, (304), 7 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,678 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,678 INFO L185 Difference]: Start difference. First operand has 186 places, 76 transitions, 1968 flow. Second operand 7 states and 304 transitions. [2021-03-24 22:35:42,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 77 transitions, 2106 flow [2021-03-24 22:35:42,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 77 transitions, 2011 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-24 22:35:42,689 INFO L241 Difference]: Finished difference. Result has 185 places, 73 transitions, 1823 flow [2021-03-24 22:35:42,689 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1875, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1823, PETRI_PLACES=185, PETRI_TRANSITIONS=73} [2021-03-24 22:35:42,689 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 153 predicate places. [2021-03-24 22:35:42,689 INFO L480 AbstractCegarLoop]: Abstraction has has 185 places, 73 transitions, 1823 flow [2021-03-24 22:35:42,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,689 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:42,689 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:42,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-03-24 22:35:42,689 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:42,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:42,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1606447848, now seen corresponding path program 100 times [2021-03-24 22:35:42,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:42,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097973997] [2021-03-24 22:35:42,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:42,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:42,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:42,705 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:42,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:42,713 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:42,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:42,724 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:42,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:42,741 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:42,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:42,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:42,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097973997] [2021-03-24 22:35:42,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:42,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:42,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365226094] [2021-03-24 22:35:42,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:42,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:42,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:42,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:42,758 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:42,758 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 73 transitions, 1823 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:42,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:42,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:42,799 INFO L129 PetriNetUnfolder]: 0/185 cut-off events. [2021-03-24 22:35:42,799 INFO L130 PetriNetUnfolder]: For 2530/2535 co-relation queries the response was YES. [2021-03-24 22:35:42,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1282 conditions, 185 events. 0/185 cut-off events. For 2530/2535 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1370 event pairs, 0 based on Foata normal form. 3/188 useless extension candidates. Maximal degree in co-relation 0. Up to 64 conditions per place. [2021-03-24 22:35:42,800 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 45 selfloop transitions, 13 changer transitions 5/73 dead transitions. [2021-03-24 22:35:42,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 73 transitions, 1949 flow [2021-03-24 22:35:42,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:42,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:42,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 301 transitions. [2021-03-24 22:35:42,800 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2021-03-24 22:35:42,801 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 301 transitions. [2021-03-24 22:35:42,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 301 transitions. [2021-03-24 22:35:42,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:42,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 301 transitions. [2021-03-24 22:35:42,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,801 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,801 INFO L185 Difference]: Start difference. First operand has 185 places, 73 transitions, 1823 flow. Second operand 7 states and 301 transitions. [2021-03-24 22:35:42,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 73 transitions, 1949 flow [2021-03-24 22:35:42,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 73 transitions, 1887 flow, removed 6 selfloop flow, removed 7 redundant places. [2021-03-24 22:35:42,811 INFO L241 Difference]: Finished difference. Result has 181 places, 68 transitions, 1681 flow [2021-03-24 22:35:42,811 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1681, PETRI_PLACES=181, PETRI_TRANSITIONS=68} [2021-03-24 22:35:42,811 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 149 predicate places. [2021-03-24 22:35:42,811 INFO L480 AbstractCegarLoop]: Abstraction has has 181 places, 68 transitions, 1681 flow [2021-03-24 22:35:42,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,812 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:42,812 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:42,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-03-24 22:35:42,812 INFO L428 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:42,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:42,812 INFO L82 PathProgramCache]: Analyzing trace with hash 510966206, now seen corresponding path program 101 times [2021-03-24 22:35:42,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:42,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074590497] [2021-03-24 22:35:42,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:42,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:42,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:42,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:42,833 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:42,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:42,845 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:42,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:42,859 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:42,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:42,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:42,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074590497] [2021-03-24 22:35:42,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:42,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:42,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416590065] [2021-03-24 22:35:42,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:42,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:42,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:42,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:42,874 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:42,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 68 transitions, 1681 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:42,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:42,874 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:42,926 INFO L129 PetriNetUnfolder]: 0/174 cut-off events. [2021-03-24 22:35:42,926 INFO L130 PetriNetUnfolder]: For 2291/2291 co-relation queries the response was YES. [2021-03-24 22:35:42,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 174 events. 0/174 cut-off events. For 2291/2291 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1271 event pairs, 0 based on Foata normal form. 1/175 useless extension candidates. Maximal degree in co-relation 0. Up to 38 conditions per place. [2021-03-24 22:35:42,927 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 33 selfloop transitions, 25 changer transitions 2/70 dead transitions. [2021-03-24 22:35:42,927 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 70 transitions, 1809 flow [2021-03-24 22:35:42,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:42,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:42,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2021-03-24 22:35:42,927 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2021-03-24 22:35:42,927 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2021-03-24 22:35:42,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2021-03-24 22:35:42,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:42,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2021-03-24 22:35:42,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,928 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,928 INFO L185 Difference]: Start difference. First operand has 181 places, 68 transitions, 1681 flow. Second operand 7 states and 302 transitions. [2021-03-24 22:35:42,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 70 transitions, 1809 flow [2021-03-24 22:35:42,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 70 transitions, 1728 flow, removed 7 selfloop flow, removed 8 redundant places. [2021-03-24 22:35:42,937 INFO L241 Difference]: Finished difference. Result has 168 places, 66 transitions, 1598 flow [2021-03-24 22:35:42,937 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1604, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1598, PETRI_PLACES=168, PETRI_TRANSITIONS=66} [2021-03-24 22:35:42,937 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 136 predicate places. [2021-03-24 22:35:42,937 INFO L480 AbstractCegarLoop]: Abstraction has has 168 places, 66 transitions, 1598 flow [2021-03-24 22:35:42,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,937 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:42,937 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:42,937 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-03-24 22:35:42,938 INFO L428 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:42,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:42,938 INFO L82 PathProgramCache]: Analyzing trace with hash 786354720, now seen corresponding path program 102 times [2021-03-24 22:35:42,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:42,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641618230] [2021-03-24 22:35:42,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:42,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:42,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:42,960 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:42,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:42,968 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:42,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:42,980 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:42,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:42,997 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:42,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:43,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:43,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641618230] [2021-03-24 22:35:43,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:43,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:43,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312838293] [2021-03-24 22:35:43,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:43,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:43,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:43,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:43,014 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:43,014 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 66 transitions, 1598 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,014 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:43,014 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:43,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:43,071 INFO L129 PetriNetUnfolder]: 0/166 cut-off events. [2021-03-24 22:35:43,071 INFO L130 PetriNetUnfolder]: For 1986/1986 co-relation queries the response was YES. [2021-03-24 22:35:43,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 166 events. 0/166 cut-off events. For 1986/1986 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1187 event pairs, 0 based on Foata normal form. 1/167 useless extension candidates. Maximal degree in co-relation 0. Up to 37 conditions per place. [2021-03-24 22:35:43,071 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 31 selfloop transitions, 24 changer transitions 3/68 dead transitions. [2021-03-24 22:35:43,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 68 transitions, 1722 flow [2021-03-24 22:35:43,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:43,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2021-03-24 22:35:43,072 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2021-03-24 22:35:43,072 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2021-03-24 22:35:43,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2021-03-24 22:35:43,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:43,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2021-03-24 22:35:43,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,078 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,078 INFO L185 Difference]: Start difference. First operand has 168 places, 66 transitions, 1598 flow. Second operand 7 states and 302 transitions. [2021-03-24 22:35:43,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 68 transitions, 1722 flow [2021-03-24 22:35:43,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 68 transitions, 1658 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-03-24 22:35:43,087 INFO L241 Difference]: Finished difference. Result has 167 places, 63 transitions, 1506 flow [2021-03-24 22:35:43,087 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1506, PETRI_PLACES=167, PETRI_TRANSITIONS=63} [2021-03-24 22:35:43,087 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 135 predicate places. [2021-03-24 22:35:43,087 INFO L480 AbstractCegarLoop]: Abstraction has has 167 places, 63 transitions, 1506 flow [2021-03-24 22:35:43,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,087 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:43,087 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:43,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-03-24 22:35:43,087 INFO L428 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:43,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:43,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1166928160, now seen corresponding path program 103 times [2021-03-24 22:35:43,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:43,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121417379] [2021-03-24 22:35:43,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:43,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:43,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:43,100 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:43,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:43,108 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:43,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:43,123 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:43,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:43,144 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:43,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:43,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121417379] [2021-03-24 22:35:43,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:43,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:43,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379016592] [2021-03-24 22:35:43,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:43,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:43,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:43,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:43,163 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:43,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 63 transitions, 1506 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:43,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:43,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:43,202 INFO L129 PetriNetUnfolder]: 0/157 cut-off events. [2021-03-24 22:35:43,202 INFO L130 PetriNetUnfolder]: For 1872/1872 co-relation queries the response was YES. [2021-03-24 22:35:43,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1073 conditions, 157 events. 0/157 cut-off events. For 1872/1872 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1096 event pairs, 0 based on Foata normal form. 1/158 useless extension candidates. Maximal degree in co-relation 0. Up to 30 conditions per place. [2021-03-24 22:35:43,202 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 28 selfloop transitions, 25 changer transitions 2/65 dead transitions. [2021-03-24 22:35:43,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 65 transitions, 1624 flow [2021-03-24 22:35:43,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:43,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:43,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2021-03-24 22:35:43,203 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2021-03-24 22:35:43,203 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2021-03-24 22:35:43,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2021-03-24 22:35:43,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:43,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2021-03-24 22:35:43,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,204 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,204 INFO L185 Difference]: Start difference. First operand has 167 places, 63 transitions, 1506 flow. Second operand 7 states and 302 transitions. [2021-03-24 22:35:43,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 65 transitions, 1624 flow [2021-03-24 22:35:43,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 65 transitions, 1562 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-03-24 22:35:43,211 INFO L241 Difference]: Finished difference. Result has 166 places, 61 transitions, 1443 flow [2021-03-24 22:35:43,212 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1443, PETRI_PLACES=166, PETRI_TRANSITIONS=61} [2021-03-24 22:35:43,212 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 134 predicate places. [2021-03-24 22:35:43,212 INFO L480 AbstractCegarLoop]: Abstraction has has 166 places, 61 transitions, 1443 flow [2021-03-24 22:35:43,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,212 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:43,212 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:43,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-03-24 22:35:43,212 INFO L428 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:43,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:43,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1037889978, now seen corresponding path program 104 times [2021-03-24 22:35:43,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:43,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342816300] [2021-03-24 22:35:43,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:43,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:43,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:43,225 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:43,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:43,232 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:43,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:43,243 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:43,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:43,257 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:43,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:43,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342816300] [2021-03-24 22:35:43,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:43,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:43,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823610101] [2021-03-24 22:35:43,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:43,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:43,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:43,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:43,272 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:43,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 61 transitions, 1443 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:43,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:43,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:43,326 INFO L129 PetriNetUnfolder]: 0/149 cut-off events. [2021-03-24 22:35:43,326 INFO L130 PetriNetUnfolder]: For 1796/1796 co-relation queries the response was YES. [2021-03-24 22:35:43,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 149 events. 0/149 cut-off events. For 1796/1796 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1006 event pairs, 0 based on Foata normal form. 1/150 useless extension candidates. Maximal degree in co-relation 0. Up to 32 conditions per place. [2021-03-24 22:35:43,326 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 28 selfloop transitions, 23 changer transitions 2/63 dead transitions. [2021-03-24 22:35:43,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 63 transitions, 1557 flow [2021-03-24 22:35:43,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:43,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:43,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2021-03-24 22:35:43,327 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2021-03-24 22:35:43,327 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2021-03-24 22:35:43,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2021-03-24 22:35:43,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:43,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2021-03-24 22:35:43,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,328 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,328 INFO L185 Difference]: Start difference. First operand has 166 places, 61 transitions, 1443 flow. Second operand 7 states and 302 transitions. [2021-03-24 22:35:43,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 63 transitions, 1557 flow [2021-03-24 22:35:43,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 63 transitions, 1492 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-03-24 22:35:43,335 INFO L241 Difference]: Finished difference. Result has 165 places, 59 transitions, 1373 flow [2021-03-24 22:35:43,335 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1373, PETRI_PLACES=165, PETRI_TRANSITIONS=59} [2021-03-24 22:35:43,335 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 133 predicate places. [2021-03-24 22:35:43,335 INFO L480 AbstractCegarLoop]: Abstraction has has 165 places, 59 transitions, 1373 flow [2021-03-24 22:35:43,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,335 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:43,335 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:43,335 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-03-24 22:35:43,335 INFO L428 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:43,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:43,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1495311042, now seen corresponding path program 105 times [2021-03-24 22:35:43,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:43,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920430384] [2021-03-24 22:35:43,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:43,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:43,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:43,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:43,360 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:43,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:43,379 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:43,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:43,397 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:43,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:43,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:43,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920430384] [2021-03-24 22:35:43,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:43,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:43,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58577410] [2021-03-24 22:35:43,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:43,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:43,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:43,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:43,414 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:43,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 59 transitions, 1373 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:43,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:43,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:43,458 INFO L129 PetriNetUnfolder]: 0/141 cut-off events. [2021-03-24 22:35:43,458 INFO L130 PetriNetUnfolder]: For 1707/1707 co-relation queries the response was YES. [2021-03-24 22:35:43,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 141 events. 0/141 cut-off events. For 1707/1707 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 917 event pairs, 0 based on Foata normal form. 1/142 useless extension candidates. Maximal degree in co-relation 0. Up to 30 conditions per place. [2021-03-24 22:35:43,458 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 26 selfloop transitions, 22 changer transitions 3/61 dead transitions. [2021-03-24 22:35:43,458 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 61 transitions, 1483 flow [2021-03-24 22:35:43,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:43,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:43,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2021-03-24 22:35:43,460 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2021-03-24 22:35:43,460 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2021-03-24 22:35:43,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2021-03-24 22:35:43,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:43,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2021-03-24 22:35:43,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,460 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,461 INFO L185 Difference]: Start difference. First operand has 165 places, 59 transitions, 1373 flow. Second operand 7 states and 302 transitions. [2021-03-24 22:35:43,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 61 transitions, 1483 flow [2021-03-24 22:35:43,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 61 transitions, 1424 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-03-24 22:35:43,467 INFO L241 Difference]: Finished difference. Result has 164 places, 56 transitions, 1286 flow [2021-03-24 22:35:43,467 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1286, PETRI_PLACES=164, PETRI_TRANSITIONS=56} [2021-03-24 22:35:43,467 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 132 predicate places. [2021-03-24 22:35:43,468 INFO L480 AbstractCegarLoop]: Abstraction has has 164 places, 56 transitions, 1286 flow [2021-03-24 22:35:43,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,468 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:43,468 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:43,468 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-03-24 22:35:43,468 INFO L428 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:43,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:43,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1911630658, now seen corresponding path program 106 times [2021-03-24 22:35:43,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:43,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943189242] [2021-03-24 22:35:43,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:43,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:43,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:43,482 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:43,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:43,489 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:43,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:43,500 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:43,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:43,514 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:43,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:43,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:43,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943189242] [2021-03-24 22:35:43,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:43,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:43,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819958686] [2021-03-24 22:35:43,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:43,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:43,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:43,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:43,528 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:43,529 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 56 transitions, 1286 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,529 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:43,529 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:43,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:43,565 INFO L129 PetriNetUnfolder]: 0/132 cut-off events. [2021-03-24 22:35:43,565 INFO L130 PetriNetUnfolder]: For 1627/1627 co-relation queries the response was YES. [2021-03-24 22:35:43,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 911 conditions, 132 events. 0/132 cut-off events. For 1627/1627 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 838 event pairs, 0 based on Foata normal form. 1/133 useless extension candidates. Maximal degree in co-relation 0. Up to 29 conditions per place. [2021-03-24 22:35:43,566 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 25 selfloop transitions, 20 changer transitions 3/58 dead transitions. [2021-03-24 22:35:43,566 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 58 transitions, 1390 flow [2021-03-24 22:35:43,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:43,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:43,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2021-03-24 22:35:43,566 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2021-03-24 22:35:43,566 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2021-03-24 22:35:43,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2021-03-24 22:35:43,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:43,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2021-03-24 22:35:43,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,569 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,569 INFO L185 Difference]: Start difference. First operand has 164 places, 56 transitions, 1286 flow. Second operand 7 states and 302 transitions. [2021-03-24 22:35:43,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 58 transitions, 1390 flow [2021-03-24 22:35:43,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 58 transitions, 1333 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-03-24 22:35:43,575 INFO L241 Difference]: Finished difference. Result has 163 places, 53 transitions, 1201 flow [2021-03-24 22:35:43,575 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1201, PETRI_PLACES=163, PETRI_TRANSITIONS=53} [2021-03-24 22:35:43,575 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 131 predicate places. [2021-03-24 22:35:43,575 INFO L480 AbstractCegarLoop]: Abstraction has has 163 places, 53 transitions, 1201 flow [2021-03-24 22:35:43,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,576 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:43,576 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:43,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-03-24 22:35:43,576 INFO L428 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:43,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:43,576 INFO L82 PathProgramCache]: Analyzing trace with hash -562119174, now seen corresponding path program 107 times [2021-03-24 22:35:43,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:43,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265011676] [2021-03-24 22:35:43,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:43,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:43,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:43,596 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:43,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:43,604 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:43,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:43,616 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:43,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:43,633 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:43,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:43,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265011676] [2021-03-24 22:35:43,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:43,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:43,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413452278] [2021-03-24 22:35:43,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:43,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:43,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:43,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:43,650 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:43,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 53 transitions, 1201 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:43,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:43,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:43,708 INFO L129 PetriNetUnfolder]: 0/123 cut-off events. [2021-03-24 22:35:43,708 INFO L130 PetriNetUnfolder]: For 1523/1523 co-relation queries the response was YES. [2021-03-24 22:35:43,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 123 events. 0/123 cut-off events. For 1523/1523 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 763 event pairs, 0 based on Foata normal form. 1/124 useless extension candidates. Maximal degree in co-relation 0. Up to 25 conditions per place. [2021-03-24 22:35:43,709 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 22 selfloop transitions, 19 changer transitions 4/55 dead transitions. [2021-03-24 22:35:43,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 55 transitions, 1299 flow [2021-03-24 22:35:43,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:43,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:43,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2021-03-24 22:35:43,710 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2021-03-24 22:35:43,710 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2021-03-24 22:35:43,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2021-03-24 22:35:43,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:43,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2021-03-24 22:35:43,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,711 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,711 INFO L185 Difference]: Start difference. First operand has 163 places, 53 transitions, 1201 flow. Second operand 7 states and 302 transitions. [2021-03-24 22:35:43,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 55 transitions, 1299 flow [2021-03-24 22:35:43,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 55 transitions, 1229 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-03-24 22:35:43,719 INFO L241 Difference]: Finished difference. Result has 161 places, 49 transitions, 1084 flow [2021-03-24 22:35:43,719 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1084, PETRI_PLACES=161, PETRI_TRANSITIONS=49} [2021-03-24 22:35:43,720 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 129 predicate places. [2021-03-24 22:35:43,720 INFO L480 AbstractCegarLoop]: Abstraction has has 161 places, 49 transitions, 1084 flow [2021-03-24 22:35:43,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,720 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:43,720 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:43,720 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-03-24 22:35:43,720 INFO L428 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:43,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:43,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1145064548, now seen corresponding path program 108 times [2021-03-24 22:35:43,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:43,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298408413] [2021-03-24 22:35:43,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:43,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:43,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:43,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:43,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 22:35:43,751 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:43,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:43,767 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:43,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:43,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:43,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298408413] [2021-03-24 22:35:43,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:43,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:43,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009431584] [2021-03-24 22:35:43,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:43,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:43,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:43,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:43,785 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:43,785 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 49 transitions, 1084 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,785 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:43,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:43,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:43,845 INFO L129 PetriNetUnfolder]: 0/113 cut-off events. [2021-03-24 22:35:43,846 INFO L130 PetriNetUnfolder]: For 1394/1394 co-relation queries the response was YES. [2021-03-24 22:35:43,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 113 events. 0/113 cut-off events. For 1394/1394 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 678 event pairs, 0 based on Foata normal form. 1/114 useless extension candidates. Maximal degree in co-relation 0. Up to 26 conditions per place. [2021-03-24 22:35:43,846 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 23 selfloop transitions, 16 changer transitions 2/51 dead transitions. [2021-03-24 22:35:43,846 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 51 transitions, 1174 flow [2021-03-24 22:35:43,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:43,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2021-03-24 22:35:43,847 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2021-03-24 22:35:43,847 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2021-03-24 22:35:43,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2021-03-24 22:35:43,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:43,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2021-03-24 22:35:43,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,848 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,848 INFO L185 Difference]: Start difference. First operand has 161 places, 49 transitions, 1084 flow. Second operand 7 states and 302 transitions. [2021-03-24 22:35:43,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 51 transitions, 1174 flow [2021-03-24 22:35:43,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 51 transitions, 1084 flow, removed 6 selfloop flow, removed 9 redundant places. [2021-03-24 22:35:43,856 INFO L241 Difference]: Finished difference. Result has 154 places, 47 transitions, 973 flow [2021-03-24 22:35:43,856 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=973, PETRI_PLACES=154, PETRI_TRANSITIONS=47} [2021-03-24 22:35:43,856 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 122 predicate places. [2021-03-24 22:35:43,856 INFO L480 AbstractCegarLoop]: Abstraction has has 154 places, 47 transitions, 973 flow [2021-03-24 22:35:43,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,856 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:43,856 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:43,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-03-24 22:35:43,856 INFO L428 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:43,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:43,857 INFO L82 PathProgramCache]: Analyzing trace with hash -2054953756, now seen corresponding path program 109 times [2021-03-24 22:35:43,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:43,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606683627] [2021-03-24 22:35:43,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:43,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:43,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:43,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:43,876 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:43,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:43,889 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:43,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:43,906 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:43,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:43,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606683627] [2021-03-24 22:35:43,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:43,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:43,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59609391] [2021-03-24 22:35:43,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:43,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:43,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:43,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:43,924 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:43,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 47 transitions, 973 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:43,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:43,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:43,963 INFO L129 PetriNetUnfolder]: 0/106 cut-off events. [2021-03-24 22:35:43,963 INFO L130 PetriNetUnfolder]: For 1219/1219 co-relation queries the response was YES. [2021-03-24 22:35:43,963 INFO L84 FinitePrefix]: Finished finitePrefix Result has 695 conditions, 106 events. 0/106 cut-off events. For 1219/1219 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 616 event pairs, 0 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 0. Up to 21 conditions per place. [2021-03-24 22:35:43,963 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 18 selfloop transitions, 18 changer transitions 3/49 dead transitions. [2021-03-24 22:35:43,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 49 transitions, 1059 flow [2021-03-24 22:35:43,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:43,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:43,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 301 transitions. [2021-03-24 22:35:43,964 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2021-03-24 22:35:43,964 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 301 transitions. [2021-03-24 22:35:43,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 301 transitions. [2021-03-24 22:35:43,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:43,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 301 transitions. [2021-03-24 22:35:43,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,965 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,965 INFO L185 Difference]: Start difference. First operand has 154 places, 47 transitions, 973 flow. Second operand 7 states and 301 transitions. [2021-03-24 22:35:43,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 49 transitions, 1059 flow [2021-03-24 22:35:43,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 49 transitions, 1004 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-24 22:35:43,972 INFO L241 Difference]: Finished difference. Result has 152 places, 44 transitions, 895 flow [2021-03-24 22:35:43,972 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=895, PETRI_PLACES=152, PETRI_TRANSITIONS=44} [2021-03-24 22:35:43,972 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 120 predicate places. [2021-03-24 22:35:43,973 INFO L480 AbstractCegarLoop]: Abstraction has has 152 places, 44 transitions, 895 flow [2021-03-24 22:35:43,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,973 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:43,973 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:43,973 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-03-24 22:35:43,973 INFO L428 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:43,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:43,973 INFO L82 PathProgramCache]: Analyzing trace with hash 2000371202, now seen corresponding path program 110 times [2021-03-24 22:35:43,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:43,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846188062] [2021-03-24 22:35:43,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:43,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:43,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:43,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:43,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 22:35:44,003 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:44,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:44,020 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:44,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:44,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:44,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846188062] [2021-03-24 22:35:44,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:44,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:44,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790191937] [2021-03-24 22:35:44,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:44,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:44,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:44,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:44,038 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:44,039 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 44 transitions, 895 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:44,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:44,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:44,087 INFO L129 PetriNetUnfolder]: 0/97 cut-off events. [2021-03-24 22:35:44,087 INFO L130 PetriNetUnfolder]: For 1123/1123 co-relation queries the response was YES. [2021-03-24 22:35:44,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 97 events. 0/97 cut-off events. For 1123/1123 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 533 event pairs, 0 based on Foata normal form. 1/98 useless extension candidates. Maximal degree in co-relation 0. Up to 24 conditions per place. [2021-03-24 22:35:44,087 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 19 selfloop transitions, 13 changer transitions 4/46 dead transitions. [2021-03-24 22:35:44,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 46 transitions, 975 flow [2021-03-24 22:35:44,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:44,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:44,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 301 transitions. [2021-03-24 22:35:44,088 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2021-03-24 22:35:44,088 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 301 transitions. [2021-03-24 22:35:44,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 301 transitions. [2021-03-24 22:35:44,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:44,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 301 transitions. [2021-03-24 22:35:44,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,089 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,089 INFO L185 Difference]: Start difference. First operand has 152 places, 44 transitions, 895 flow. Second operand 7 states and 301 transitions. [2021-03-24 22:35:44,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 46 transitions, 975 flow [2021-03-24 22:35:44,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 46 transitions, 882 flow, removed 5 selfloop flow, removed 9 redundant places. [2021-03-24 22:35:44,094 INFO L241 Difference]: Finished difference. Result has 139 places, 40 transitions, 751 flow [2021-03-24 22:35:44,094 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=751, PETRI_PLACES=139, PETRI_TRANSITIONS=40} [2021-03-24 22:35:44,094 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 107 predicate places. [2021-03-24 22:35:44,094 INFO L480 AbstractCegarLoop]: Abstraction has has 139 places, 40 transitions, 751 flow [2021-03-24 22:35:44,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,094 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:44,094 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:44,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-03-24 22:35:44,094 INFO L428 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:44,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:44,095 INFO L82 PathProgramCache]: Analyzing trace with hash 10976492, now seen corresponding path program 111 times [2021-03-24 22:35:44,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:44,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43611995] [2021-03-24 22:35:44,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:44,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:44,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:44,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:44,114 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:44,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:44,134 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:44,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:44,151 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:44,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:44,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:44,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43611995] [2021-03-24 22:35:44,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:44,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:44,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394507710] [2021-03-24 22:35:44,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:44,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:44,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:44,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:44,169 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:44,169 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 40 transitions, 751 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,169 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:44,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:44,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:44,223 INFO L129 PetriNetUnfolder]: 0/87 cut-off events. [2021-03-24 22:35:44,224 INFO L130 PetriNetUnfolder]: For 887/887 co-relation queries the response was YES. [2021-03-24 22:35:44,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 87 events. 0/87 cut-off events. For 887/887 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 457 event pairs, 0 based on Foata normal form. 1/88 useless extension candidates. Maximal degree in co-relation 0. Up to 15 conditions per place. [2021-03-24 22:35:44,224 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 15 selfloop transitions, 14 changer transitions 3/42 dead transitions. [2021-03-24 22:35:44,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 42 transitions, 823 flow [2021-03-24 22:35:44,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:44,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:44,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2021-03-24 22:35:44,225 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2021-03-24 22:35:44,225 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2021-03-24 22:35:44,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2021-03-24 22:35:44,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:44,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2021-03-24 22:35:44,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,226 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,226 INFO L185 Difference]: Start difference. First operand has 139 places, 40 transitions, 751 flow. Second operand 7 states and 302 transitions. [2021-03-24 22:35:44,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 42 transitions, 823 flow [2021-03-24 22:35:44,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 42 transitions, 759 flow, removed 5 selfloop flow, removed 9 redundant places. [2021-03-24 22:35:44,231 INFO L241 Difference]: Finished difference. Result has 132 places, 37 transitions, 652 flow [2021-03-24 22:35:44,231 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=652, PETRI_PLACES=132, PETRI_TRANSITIONS=37} [2021-03-24 22:35:44,231 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 100 predicate places. [2021-03-24 22:35:44,231 INFO L480 AbstractCegarLoop]: Abstraction has has 132 places, 37 transitions, 652 flow [2021-03-24 22:35:44,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,231 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:44,232 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:44,232 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-03-24 22:35:44,232 INFO L428 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:44,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:44,232 INFO L82 PathProgramCache]: Analyzing trace with hash 916354016, now seen corresponding path program 112 times [2021-03-24 22:35:44,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:44,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317502842] [2021-03-24 22:35:44,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:44,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:44,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:44,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:44,252 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:44,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:44,263 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:44,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:44,280 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:44,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:44,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:44,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317502842] [2021-03-24 22:35:44,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:44,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:44,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447387956] [2021-03-24 22:35:44,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:44,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:44,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:44,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:44,304 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:44,304 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 37 transitions, 652 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:44,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:44,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:44,354 INFO L129 PetriNetUnfolder]: 0/78 cut-off events. [2021-03-24 22:35:44,354 INFO L130 PetriNetUnfolder]: For 743/743 co-relation queries the response was YES. [2021-03-24 22:35:44,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 78 events. 0/78 cut-off events. For 743/743 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 378 event pairs, 0 based on Foata normal form. 1/79 useless extension candidates. Maximal degree in co-relation 0. Up to 17 conditions per place. [2021-03-24 22:35:44,354 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 16 selfloop transitions, 11 changer transitions 2/39 dead transitions. [2021-03-24 22:35:44,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 39 transitions, 718 flow [2021-03-24 22:35:44,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:44,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:44,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2021-03-24 22:35:44,355 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2021-03-24 22:35:44,355 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2021-03-24 22:35:44,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2021-03-24 22:35:44,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:44,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2021-03-24 22:35:44,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,356 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,357 INFO L185 Difference]: Start difference. First operand has 132 places, 37 transitions, 652 flow. Second operand 7 states and 302 transitions. [2021-03-24 22:35:44,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 39 transitions, 718 flow [2021-03-24 22:35:44,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 39 transitions, 672 flow, removed 4 selfloop flow, removed 7 redundant places. [2021-03-24 22:35:44,361 INFO L241 Difference]: Finished difference. Result has 127 places, 35 transitions, 578 flow [2021-03-24 22:35:44,361 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=578, PETRI_PLACES=127, PETRI_TRANSITIONS=35} [2021-03-24 22:35:44,361 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 95 predicate places. [2021-03-24 22:35:44,361 INFO L480 AbstractCegarLoop]: Abstraction has has 127 places, 35 transitions, 578 flow [2021-03-24 22:35:44,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,361 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:44,361 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:44,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-03-24 22:35:44,362 INFO L428 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:44,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:44,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1305180812, now seen corresponding path program 113 times [2021-03-24 22:35:44,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:44,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216901077] [2021-03-24 22:35:44,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:44,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:44,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:44,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:44,383 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:44,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:44,395 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:44,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:44,413 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:44,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:44,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:44,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216901077] [2021-03-24 22:35:44,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:44,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:44,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967522713] [2021-03-24 22:35:44,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:44,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:44,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:44,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:44,435 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:44,435 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 35 transitions, 578 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,435 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:44,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:44,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:44,490 INFO L129 PetriNetUnfolder]: 0/72 cut-off events. [2021-03-24 22:35:44,490 INFO L130 PetriNetUnfolder]: For 619/619 co-relation queries the response was YES. [2021-03-24 22:35:44,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 72 events. 0/72 cut-off events. For 619/619 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 326 event pairs, 0 based on Foata normal form. 1/73 useless extension candidates. Maximal degree in co-relation 0. Up to 17 conditions per place. [2021-03-24 22:35:44,490 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 14 selfloop transitions, 10 changer transitions 3/37 dead transitions. [2021-03-24 22:35:44,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 37 transitions, 640 flow [2021-03-24 22:35:44,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:44,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:44,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 301 transitions. [2021-03-24 22:35:44,491 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2021-03-24 22:35:44,491 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 301 transitions. [2021-03-24 22:35:44,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 301 transitions. [2021-03-24 22:35:44,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:44,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 301 transitions. [2021-03-24 22:35:44,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,492 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,492 INFO L185 Difference]: Start difference. First operand has 127 places, 35 transitions, 578 flow. Second operand 7 states and 301 transitions. [2021-03-24 22:35:44,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 37 transitions, 640 flow [2021-03-24 22:35:44,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 37 transitions, 593 flow, removed 6 selfloop flow, removed 8 redundant places. [2021-03-24 22:35:44,496 INFO L241 Difference]: Finished difference. Result has 124 places, 32 transitions, 489 flow [2021-03-24 22:35:44,497 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=489, PETRI_PLACES=124, PETRI_TRANSITIONS=32} [2021-03-24 22:35:44,497 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 92 predicate places. [2021-03-24 22:35:44,497 INFO L480 AbstractCegarLoop]: Abstraction has has 124 places, 32 transitions, 489 flow [2021-03-24 22:35:44,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,497 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:44,497 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:44,497 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-03-24 22:35:44,497 INFO L428 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:44,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:44,497 INFO L82 PathProgramCache]: Analyzing trace with hash -573050980, now seen corresponding path program 114 times [2021-03-24 22:35:44,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:44,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505659669] [2021-03-24 22:35:44,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:44,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:44,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:44,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:44,516 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:44,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:44,527 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:44,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:44,553 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:44,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:44,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:44,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505659669] [2021-03-24 22:35:44,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:44,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:44,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219548479] [2021-03-24 22:35:44,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:44,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:44,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:44,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:44,567 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:44,567 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 32 transitions, 489 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,567 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:44,567 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:44,567 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:44,611 INFO L129 PetriNetUnfolder]: 0/63 cut-off events. [2021-03-24 22:35:44,611 INFO L130 PetriNetUnfolder]: For 471/471 co-relation queries the response was YES. [2021-03-24 22:35:44,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 63 events. 0/63 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 261 event pairs, 0 based on Foata normal form. 1/64 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-03-24 22:35:44,612 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 11 selfloop transitions, 11 changer transitions 2/34 dead transitions. [2021-03-24 22:35:44,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 34 transitions, 545 flow [2021-03-24 22:35:44,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:44,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:44,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 301 transitions. [2021-03-24 22:35:44,612 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2021-03-24 22:35:44,612 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 301 transitions. [2021-03-24 22:35:44,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 301 transitions. [2021-03-24 22:35:44,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:44,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 301 transitions. [2021-03-24 22:35:44,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,613 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,613 INFO L185 Difference]: Start difference. First operand has 124 places, 32 transitions, 489 flow. Second operand 7 states and 301 transitions. [2021-03-24 22:35:44,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 34 transitions, 545 flow [2021-03-24 22:35:44,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 34 transitions, 477 flow, removed 8 selfloop flow, removed 11 redundant places. [2021-03-24 22:35:44,615 INFO L241 Difference]: Finished difference. Result has 112 places, 30 transitions, 409 flow [2021-03-24 22:35:44,615 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=409, PETRI_PLACES=112, PETRI_TRANSITIONS=30} [2021-03-24 22:35:44,615 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 80 predicate places. [2021-03-24 22:35:44,615 INFO L480 AbstractCegarLoop]: Abstraction has has 112 places, 30 transitions, 409 flow [2021-03-24 22:35:44,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,616 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:44,616 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:44,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-03-24 22:35:44,616 INFO L428 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:44,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:44,616 INFO L82 PathProgramCache]: Analyzing trace with hash 716048202, now seen corresponding path program 115 times [2021-03-24 22:35:44,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:44,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869777735] [2021-03-24 22:35:44,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:44,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:44,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:44,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:44,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 22:35:44,653 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:44,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:44,680 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:44,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:44,696 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 22:35:44,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869777735] [2021-03-24 22:35:44,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:44,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:44,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520412439] [2021-03-24 22:35:44,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:44,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:44,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:44,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:44,697 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:44,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 30 transitions, 409 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:44,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:44,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:44,737 INFO L129 PetriNetUnfolder]: 0/55 cut-off events. [2021-03-24 22:35:44,737 INFO L130 PetriNetUnfolder]: For 336/336 co-relation queries the response was YES. [2021-03-24 22:35:44,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 55 events. 0/55 cut-off events. For 336/336 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 201 event pairs, 0 based on Foata normal form. 1/56 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-03-24 22:35:44,738 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 12 selfloop transitions, 8 changer transitions 2/32 dead transitions. [2021-03-24 22:35:44,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 32 transitions, 461 flow [2021-03-24 22:35:44,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:44,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:44,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2021-03-24 22:35:44,739 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2021-03-24 22:35:44,739 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2021-03-24 22:35:44,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2021-03-24 22:35:44,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:44,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2021-03-24 22:35:44,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.142857142857146) internal successors, (302), 7 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,740 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,740 INFO L185 Difference]: Start difference. First operand has 112 places, 30 transitions, 409 flow. Second operand 7 states and 302 transitions. [2021-03-24 22:35:44,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 32 transitions, 461 flow [2021-03-24 22:35:44,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 32 transitions, 427 flow, removed 4 selfloop flow, removed 7 redundant places. [2021-03-24 22:35:44,742 INFO L241 Difference]: Finished difference. Result has 104 places, 28 transitions, 351 flow [2021-03-24 22:35:44,742 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=351, PETRI_PLACES=104, PETRI_TRANSITIONS=28} [2021-03-24 22:35:44,742 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 72 predicate places. [2021-03-24 22:35:44,742 INFO L480 AbstractCegarLoop]: Abstraction has has 104 places, 28 transitions, 351 flow [2021-03-24 22:35:44,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,742 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:44,742 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:44,742 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-03-24 22:35:44,742 INFO L428 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:44,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:44,742 INFO L82 PathProgramCache]: Analyzing trace with hash 300689700, now seen corresponding path program 116 times [2021-03-24 22:35:44,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:44,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669326805] [2021-03-24 22:35:44,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:44,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:44,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:44,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:44,764 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:44,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:44,776 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:44,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:44,792 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:44,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:44,808 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 22:35:44,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669326805] [2021-03-24 22:35:44,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:44,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:44,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730367868] [2021-03-24 22:35:44,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:44,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:44,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:44,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:44,809 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:44,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 28 transitions, 351 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:44,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:44,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:44,841 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2021-03-24 22:35:44,841 INFO L130 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2021-03-24 22:35:44,841 INFO L84 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 48 events. 0/48 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 152 event pairs, 0 based on Foata normal form. 1/49 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-03-24 22:35:44,841 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 8 selfloop transitions, 8 changer transitions 4/30 dead transitions. [2021-03-24 22:35:44,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 30 transitions, 399 flow [2021-03-24 22:35:44,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:44,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:44,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 300 transitions. [2021-03-24 22:35:44,842 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8086253369272237 [2021-03-24 22:35:44,842 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 300 transitions. [2021-03-24 22:35:44,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 300 transitions. [2021-03-24 22:35:44,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:44,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 300 transitions. [2021-03-24 22:35:44,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.857142857142854) internal successors, (300), 7 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,843 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,843 INFO L185 Difference]: Start difference. First operand has 104 places, 28 transitions, 351 flow. Second operand 7 states and 300 transitions. [2021-03-24 22:35:44,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 30 transitions, 399 flow [2021-03-24 22:35:44,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 30 transitions, 373 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-03-24 22:35:44,845 INFO L241 Difference]: Finished difference. Result has 100 places, 24 transitions, 287 flow [2021-03-24 22:35:44,845 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=287, PETRI_PLACES=100, PETRI_TRANSITIONS=24} [2021-03-24 22:35:44,845 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 68 predicate places. [2021-03-24 22:35:44,845 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 24 transitions, 287 flow [2021-03-24 22:35:44,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,845 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:44,845 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:44,846 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-03-24 22:35:44,846 INFO L428 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:44,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:44,846 INFO L82 PathProgramCache]: Analyzing trace with hash -2096055204, now seen corresponding path program 117 times [2021-03-24 22:35:44,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:44,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221074223] [2021-03-24 22:35:44,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:44,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:44,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:44,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:44,867 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:44,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:44,879 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:44,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:44,894 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:44,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:44,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:44,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221074223] [2021-03-24 22:35:44,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:44,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:44,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611250029] [2021-03-24 22:35:44,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:44,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:44,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:44,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:44,912 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:44,912 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 24 transitions, 287 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,912 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:44,912 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:44,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:44,954 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-03-24 22:35:44,954 INFO L130 PetriNetUnfolder]: For 223/223 co-relation queries the response was YES. [2021-03-24 22:35:44,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 38 events. 0/38 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 95 event pairs, 0 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-03-24 22:35:44,955 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 7 selfloop transitions, 6 changer transitions 2/25 dead transitions. [2021-03-24 22:35:44,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 25 transitions, 321 flow [2021-03-24 22:35:44,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:44,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:44,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 298 transitions. [2021-03-24 22:35:44,955 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8032345013477089 [2021-03-24 22:35:44,955 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 298 transitions. [2021-03-24 22:35:44,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 298 transitions. [2021-03-24 22:35:44,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:44,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 298 transitions. [2021-03-24 22:35:44,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.57142857142857) internal successors, (298), 7 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,956 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,956 INFO L185 Difference]: Start difference. First operand has 100 places, 24 transitions, 287 flow. Second operand 7 states and 298 transitions. [2021-03-24 22:35:44,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 25 transitions, 321 flow [2021-03-24 22:35:44,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 25 transitions, 228 flow, removed 5 selfloop flow, removed 20 redundant places. [2021-03-24 22:35:44,958 INFO L241 Difference]: Finished difference. Result has 76 places, 22 transitions, 180 flow [2021-03-24 22:35:44,958 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=180, PETRI_PLACES=76, PETRI_TRANSITIONS=22} [2021-03-24 22:35:44,958 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2021-03-24 22:35:44,958 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 22 transitions, 180 flow [2021-03-24 22:35:44,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,958 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:44,958 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:44,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-03-24 22:35:44,958 INFO L428 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:44,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:44,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1512027732, now seen corresponding path program 118 times [2021-03-24 22:35:44,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:44,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21919526] [2021-03-24 22:35:44,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:44,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:44,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:44,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:44,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 22:35:44,990 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:44,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:45,006 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:45,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:45,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:45,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21919526] [2021-03-24 22:35:45,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:45,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:45,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758714619] [2021-03-24 22:35:45,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:45,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:45,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:45,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:45,023 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:45,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 22 transitions, 180 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:45,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:45,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:45,068 INFO L129 PetriNetUnfolder]: 0/31 cut-off events. [2021-03-24 22:35:45,069 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2021-03-24 22:35:45,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 31 events. 0/31 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 1/32 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-24 22:35:45,069 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 5 selfloop transitions, 5 changer transitions 3/23 dead transitions. [2021-03-24 22:35:45,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 23 transitions, 210 flow [2021-03-24 22:35:45,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:45,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:45,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 297 transitions. [2021-03-24 22:35:45,070 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8005390835579514 [2021-03-24 22:35:45,070 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 297 transitions. [2021-03-24 22:35:45,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 297 transitions. [2021-03-24 22:35:45,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:45,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 297 transitions. [2021-03-24 22:35:45,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.42857142857143) internal successors, (297), 7 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,071 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,071 INFO L185 Difference]: Start difference. First operand has 76 places, 22 transitions, 180 flow. Second operand 7 states and 297 transitions. [2021-03-24 22:35:45,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 23 transitions, 210 flow [2021-03-24 22:35:45,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 23 transitions, 191 flow, removed 2 selfloop flow, removed 6 redundant places. [2021-03-24 22:35:45,072 INFO L241 Difference]: Finished difference. Result has 72 places, 19 transitions, 131 flow [2021-03-24 22:35:45,072 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=131, PETRI_PLACES=72, PETRI_TRANSITIONS=19} [2021-03-24 22:35:45,072 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 40 predicate places. [2021-03-24 22:35:45,072 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 19 transitions, 131 flow [2021-03-24 22:35:45,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,072 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:45,072 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:45,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-03-24 22:35:45,072 INFO L428 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:45,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:45,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1563325492, now seen corresponding path program 119 times [2021-03-24 22:35:45,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:45,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819216588] [2021-03-24 22:35:45,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:45,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:45,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:45,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:45,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:45,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:45,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:45,092 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:45,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:45,103 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:45,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:45,119 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:45,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:45,135 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 22:35:45,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819216588] [2021-03-24 22:35:45,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:45,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:45,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457062637] [2021-03-24 22:35:45,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:45,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:45,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:45,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:45,136 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:45,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 19 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,136 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:45,136 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:45,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:45,174 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-03-24 22:35:45,174 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2021-03-24 22:35:45,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 23 events. 0/23 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 1/24 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-24 22:35:45,174 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 3 selfloop transitions, 3 changer transitions 3/19 dead transitions. [2021-03-24 22:35:45,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 19 transitions, 149 flow [2021-03-24 22:35:45,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:45,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:45,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 296 transitions. [2021-03-24 22:35:45,175 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7978436657681941 [2021-03-24 22:35:45,175 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 296 transitions. [2021-03-24 22:35:45,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 296 transitions. [2021-03-24 22:35:45,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:45,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 296 transitions. [2021-03-24 22:35:45,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.285714285714285) internal successors, (296), 7 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,176 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,176 INFO L185 Difference]: Start difference. First operand has 72 places, 19 transitions, 131 flow. Second operand 7 states and 296 transitions. [2021-03-24 22:35:45,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 19 transitions, 149 flow [2021-03-24 22:35:45,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 19 transitions, 113 flow, removed 4 selfloop flow, removed 12 redundant places. [2021-03-24 22:35:45,177 INFO L241 Difference]: Finished difference. Result has 58 places, 16 transitions, 73 flow [2021-03-24 22:35:45,177 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=73, PETRI_PLACES=58, PETRI_TRANSITIONS=16} [2021-03-24 22:35:45,177 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 26 predicate places. [2021-03-24 22:35:45,177 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 16 transitions, 73 flow [2021-03-24 22:35:45,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,177 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:45,177 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:45,177 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-03-24 22:35:45,177 INFO L428 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:45,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:45,178 INFO L82 PathProgramCache]: Analyzing trace with hash -2089514098, now seen corresponding path program 120 times [2021-03-24 22:35:45,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:45,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398293187] [2021-03-24 22:35:45,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:45,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:45,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:45,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:45,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:45,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:45,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:45,196 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:45,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:45,207 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:45,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:45,223 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-03-24 22:35:45,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:45,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:45,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398293187] [2021-03-24 22:35:45,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:45,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 22:35:45,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323908512] [2021-03-24 22:35:45,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 22:35:45,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:45,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 22:35:45,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 22:35:45,240 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2021-03-24 22:35:45,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 16 transitions, 73 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:45,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2021-03-24 22:35:45,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:45,273 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-24 22:35:45,273 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-24 22:35:45,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 15 events. 0/15 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 22:35:45,273 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 0 selfloop transitions, 0 changer transitions 15/15 dead transitions. [2021-03-24 22:35:45,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 15 transitions, 79 flow [2021-03-24 22:35:45,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 22:35:45,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 22:35:45,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 293 transitions. [2021-03-24 22:35:45,274 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7897574123989218 [2021-03-24 22:35:45,274 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 293 transitions. [2021-03-24 22:35:45,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 293 transitions. [2021-03-24 22:35:45,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:45,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 293 transitions. [2021-03-24 22:35:45,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,275 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,275 INFO L185 Difference]: Start difference. First operand has 58 places, 16 transitions, 73 flow. Second operand 7 states and 293 transitions. [2021-03-24 22:35:45,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 15 transitions, 79 flow [2021-03-24 22:35:45,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 15 transitions, 62 flow, removed 2 selfloop flow, removed 8 redundant places. [2021-03-24 22:35:45,275 INFO L241 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2021-03-24 22:35:45,275 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2021-03-24 22:35:45,275 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2021-03-24 22:35:45,275 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2021-03-24 22:35:45,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-03-24 22:35:45,282 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 10:35:45 BasicIcfg [2021-03-24 22:35:45,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 22:35:45,283 INFO L168 Benchmark]: Toolchain (without parser) took 25586.91 ms. Allocated memory was 255.9 MB in the beginning and 625.0 MB in the end (delta: 369.1 MB). Free memory was 236.5 MB in the beginning and 428.1 MB in the end (delta: -191.5 MB). Peak memory consumption was 179.0 MB. Max. memory is 16.0 GB. [2021-03-24 22:35:45,283 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:35:45,283 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.07 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 22:35:45,283 INFO L168 Benchmark]: Boogie Preprocessor took 11.61 ms. Allocated memory is still 255.9 MB. Free memory was 235.0 MB in the beginning and 234.1 MB in the end (delta: 883.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:35:45,283 INFO L168 Benchmark]: RCFGBuilder took 209.65 ms. Allocated memory is still 255.9 MB. Free memory was 234.1 MB in the beginning and 240.9 MB in the end (delta: -6.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.0 GB. [2021-03-24 22:35:45,283 INFO L168 Benchmark]: TraceAbstraction took 25335.45 ms. Allocated memory was 255.9 MB in the beginning and 625.0 MB in the end (delta: 369.1 MB). Free memory was 240.5 MB in the beginning and 428.1 MB in the end (delta: -187.6 MB). Peak memory consumption was 182.5 MB. Max. memory is 16.0 GB. [2021-03-24 22:35:45,284 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 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.07 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.61 ms. Allocated memory is still 255.9 MB. Free memory was 235.0 MB in the beginning and 234.1 MB in the end (delta: 883.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 209.65 ms. Allocated memory is still 255.9 MB. Free memory was 234.1 MB in the beginning and 240.9 MB in the end (delta: -6.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 25335.45 ms. Allocated memory was 255.9 MB in the beginning and 625.0 MB in the end (delta: 369.1 MB). Free memory was 240.5 MB in the beginning and 428.1 MB in the end (delta: -187.6 MB). Peak memory consumption was 182.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 125.2ms, 37 PlacesBefore, 32 PlacesAfterwards, 41 TransitionsBefore, 36 TransitionsAfterwards, 440 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 130 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 130, positive: 130, positive conditional: 0, positive unconditional: 130, 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: 130, positive: 130, positive conditional: 0, positive unconditional: 130, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 130, positive: 130, positive conditional: 0, positive unconditional: 130, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 130, positive: 130, positive conditional: 0, positive unconditional: 130, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 130, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 130, unknown conditional: 0, unknown unconditional: 130] , 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 - PositiveResult [Line: 23]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 29.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 25240.0ms, OverallIterations: 124, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 14991.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 204.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1422 SDtfs, 2055 SDslu, 1147 SDs, 0 SdLazy, 2594 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1790.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 852 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 724 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 9795.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4842occurred in iteration=65, InterpolantAutomatonStates: 852, 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: 49.7ms SsaConstructionTime, 150.6ms SatisfiabilityAnalysisTime, 9279.7ms InterpolantComputationTime, 1984 NumberOfCodeBlocks, 1984 NumberOfCodeBlocksAsserted, 124 NumberOfCheckSat, 1860 ConstructedInterpolants, 0 QuantifiedInterpolants, 34736 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 124 InterpolantComputations, 124 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...