/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 13:42:05,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 13:42:05,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 13:42:05,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 13:42:05,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 13:42:05,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 13:42:05,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 13:42:05,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 13:42:05,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 13:42:05,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 13:42:05,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 13:42:05,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 13:42:05,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 13:42:05,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 13:42:05,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 13:42:05,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 13:42:05,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 13:42:05,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 13:42:05,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 13:42:05,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 13:42:05,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 13:42:05,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 13:42:05,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 13:42:05,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 13:42:05,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 13:42:05,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 13:42:05,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 13:42:05,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 13:42:05,213 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2021-03-24 13:42:05,226 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 13:42:05,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 13:42:05,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 13:42:05,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 13:42:05,227 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 13:42:05,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 13:42:05,227 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 13:42:05,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 13:42:05,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 13:42:05,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 13:42:05,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 13:42:05,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 13:42:05,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 13:42:05,228 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 13:42:05,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 13:42:05,228 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 13:42:05,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 13:42:05,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 13:42:05,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 13:42:05,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 13:42:05,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 13:42:05,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 13:42:05,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 13:42:05,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 13:42:05,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 13:42:05,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 13:42:05,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 13:42:05,229 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 13:42:05,229 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 13:42:05,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 13:42:05,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 13:42:05,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 13:42:05,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 13:42:05,530 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 13:42:05,530 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 13:42:05,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl [2021-03-24 13:42:05,531 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl' [2021-03-24 13:42:05,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 13:42:05,569 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 13:42:05,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 13:42:05,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 13:42:05,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 13:42:05,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:42:05" (1/1) ... [2021-03-24 13:42:05,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:42:05" (1/1) ... [2021-03-24 13:42:05,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 13:42:05,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 13:42:05,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 13:42:05,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 13:42:05,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:42:05" (1/1) ... [2021-03-24 13:42:05,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:42:05" (1/1) ... [2021-03-24 13:42:05,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:42:05" (1/1) ... [2021-03-24 13:42:05,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:42:05" (1/1) ... [2021-03-24 13:42:05,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:42:05" (1/1) ... [2021-03-24 13:42:05,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:42:05" (1/1) ... [2021-03-24 13:42:05,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:42:05" (1/1) ... [2021-03-24 13:42:05,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 13:42:05,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 13:42:05,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 13:42:05,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 13:42:05,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:42:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 13:42:05,677 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-24 13:42:05,677 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-24 13:42:05,678 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-24 13:42:05,678 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-24 13:42:05,678 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-24 13:42:05,678 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-24 13:42:05,678 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-24 13:42:05,678 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-24 13:42:05,679 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-24 13:42:05,679 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-24 13:42:05,679 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-24 13:42:05,679 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-24 13:42:05,679 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-24 13:42:05,679 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-24 13:42:05,679 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-24 13:42:05,679 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-24 13:42:05,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 13:42:05,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 13:42:05,680 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-24 13:42:05,680 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-24 13:42:05,680 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-24 13:42:05,680 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-24 13:42:05,680 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-24 13:42:05,680 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-24 13:42:05,681 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 13:42:05,842 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 13:42:05,842 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-24 13:42:05,843 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:42:05 BoogieIcfgContainer [2021-03-24 13:42:05,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 13:42:05,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 13:42:05,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 13:42:05,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 13:42:05,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:42:05" (1/2) ... [2021-03-24 13:42:05,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d887fa and model type example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 01:42:05, skipping insertion in model container [2021-03-24 13:42:05,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:42:05" (2/2) ... [2021-03-24 13:42:05,848 INFO L111 eAbstractionObserver]: Analyzing ICFG example_7.bpl [2021-03-24 13:42:05,866 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 13:42:05,869 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 13:42:05,870 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 13:42:05,997 INFO L149 ThreadInstanceAdder]: Constructed 49 joinOtherThreadTransitions. [2021-03-24 13:42:06,009 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-03-24 13:42:06,025 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 13:42:06,025 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 13:42:06,025 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 13:42:06,025 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 13:42:06,025 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 13:42:06,025 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 13:42:06,025 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 13:42:06,025 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 13:42:06,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 80 transitions, 342 flow [2021-03-24 13:42:06,158 INFO L129 PetriNetUnfolder]: 321/472 cut-off events. [2021-03-24 13:42:06,158 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2021-03-24 13:42:06,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 472 events. 321/472 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1541 event pairs, 0 based on Foata normal form. 0/471 useless extension candidates. Maximal degree in co-relation 416. Up to 140 conditions per place. [2021-03-24 13:42:06,163 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 80 transitions, 342 flow [2021-03-24 13:42:06,171 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 71 transitions, 310 flow [2021-03-24 13:42:06,172 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 13:42:06,179 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 71 transitions, 310 flow [2021-03-24 13:42:06,182 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 71 transitions, 310 flow [2021-03-24 13:42:06,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 71 transitions, 310 flow [2021-03-24 13:42:06,223 INFO L129 PetriNetUnfolder]: 321/470 cut-off events. [2021-03-24 13:42:06,223 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2021-03-24 13:42:06,225 INFO L84 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 470 events. 321/470 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1573 event pairs, 0 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 416. Up to 140 conditions per place. [2021-03-24 13:42:06,232 INFO L142 LiptonReduction]: Number of co-enabled transitions 1260 [2021-03-24 13:42:06,320 INFO L154 LiptonReduction]: Checked pairs total: 357 [2021-03-24 13:42:06,321 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-24 13:42:06,323 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 152 [2021-03-24 13:42:06,362 INFO L129 PetriNetUnfolder]: 321/462 cut-off events. [2021-03-24 13:42:06,363 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2021-03-24 13:42:06,363 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:06,363 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:06,364 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:06,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:06,369 INFO L82 PathProgramCache]: Analyzing trace with hash 792718600, now seen corresponding path program 1 times [2021-03-24 13:42:06,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:06,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317093121] [2021-03-24 13:42:06,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:06,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:06,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:06,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:06,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:42:06,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:06,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:06,462 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 13:42:06,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317093121] [2021-03-24 13:42:06,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:06,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:42:06,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709720659] [2021-03-24 13:42:06,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:42:06,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:06,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:42:06,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:42:06,479 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-03-24 13:42:06,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 64 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:06,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-03-24 13:42:06,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:06,517 INFO L129 PetriNetUnfolder]: 135/220 cut-off events. [2021-03-24 13:42:06,517 INFO L130 PetriNetUnfolder]: For 391/391 co-relation queries the response was YES. [2021-03-24 13:42:06,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 220 events. 135/220 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 739 event pairs, 0 based on Foata normal form. 57/277 useless extension candidates. Maximal degree in co-relation 394. Up to 60 conditions per place. [2021-03-24 13:42:06,520 INFO L132 encePairwiseOnDemand]: 81/87 looper letters, 2 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2021-03-24 13:42:06,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 277 flow [2021-03-24 13:42:06,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:42:06,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:42:06,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-03-24 13:42:06,529 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-03-24 13:42:06,529 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-03-24 13:42:06,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-03-24 13:42:06,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:06,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-03-24 13:42:06,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,537 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,538 INFO L185 Difference]: Start difference. First operand has 44 places, 64 transitions, 296 flow. Second operand 3 states and 245 transitions. [2021-03-24 13:42:06,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 277 flow [2021-03-24 13:42:06,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 59 transitions, 175 flow, removed 0 selfloop flow, removed 14 redundant places. [2021-03-24 13:42:06,543 INFO L241 Difference]: Finished difference. Result has 32 places, 59 transitions, 171 flow [2021-03-24 13:42:06,545 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=32, PETRI_TRANSITIONS=59} [2021-03-24 13:42:06,545 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -12 predicate places. [2021-03-24 13:42:06,545 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 59 transitions, 171 flow [2021-03-24 13:42:06,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,546 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:06,546 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:06,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 13:42:06,546 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:06,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:06,547 INFO L82 PathProgramCache]: Analyzing trace with hash -814701548, now seen corresponding path program 1 times [2021-03-24 13:42:06,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:06,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071844858] [2021-03-24 13:42:06,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:06,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:06,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:06,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:06,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:42:06,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:06,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:06,566 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 13:42:06,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071844858] [2021-03-24 13:42:06,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:06,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:42:06,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967107488] [2021-03-24 13:42:06,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:42:06,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:06,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:42:06,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:42:06,568 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-03-24 13:42:06,569 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 59 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:06,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-03-24 13:42:06,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:06,585 INFO L129 PetriNetUnfolder]: 130/214 cut-off events. [2021-03-24 13:42:06,585 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2021-03-24 13:42:06,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 214 events. 130/214 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 721 event pairs, 0 based on Foata normal form. 1/215 useless extension candidates. Maximal degree in co-relation 241. Up to 60 conditions per place. [2021-03-24 13:42:06,586 INFO L132 encePairwiseOnDemand]: 85/87 looper letters, 6 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2021-03-24 13:42:06,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 58 transitions, 182 flow [2021-03-24 13:42:06,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:42:06,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:42:06,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-03-24 13:42:06,588 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-03-24 13:42:06,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-03-24 13:42:06,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-03-24 13:42:06,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:06,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-03-24 13:42:06,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,591 INFO L185 Difference]: Start difference. First operand has 32 places, 59 transitions, 171 flow. Second operand 3 states and 245 transitions. [2021-03-24 13:42:06,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 58 transitions, 182 flow [2021-03-24 13:42:06,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 58 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 13:42:06,592 INFO L241 Difference]: Finished difference. Result has 33 places, 58 transitions, 169 flow [2021-03-24 13:42:06,592 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=33, PETRI_TRANSITIONS=58} [2021-03-24 13:42:06,593 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -11 predicate places. [2021-03-24 13:42:06,593 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 58 transitions, 169 flow [2021-03-24 13:42:06,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,593 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:06,593 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:06,594 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 13:42:06,594 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:06,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:06,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1618123062, now seen corresponding path program 1 times [2021-03-24 13:42:06,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:06,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677317078] [2021-03-24 13:42:06,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:06,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:06,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:06,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:06,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:42:06,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:06,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:06,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:06,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677317078] [2021-03-24 13:42:06,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:06,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:42:06,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120096999] [2021-03-24 13:42:06,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:42:06,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:06,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:42:06,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:42:06,612 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-03-24 13:42:06,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 58 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:06,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-03-24 13:42:06,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:06,628 INFO L129 PetriNetUnfolder]: 106/184 cut-off events. [2021-03-24 13:42:06,628 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-24 13:42:06,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 184 events. 106/184 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 642 event pairs, 0 based on Foata normal form. 5/189 useless extension candidates. Maximal degree in co-relation 216. Up to 60 conditions per place. [2021-03-24 13:42:06,629 INFO L132 encePairwiseOnDemand]: 84/87 looper letters, 5 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2021-03-24 13:42:06,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 56 transitions, 175 flow [2021-03-24 13:42:06,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:42:06,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:42:06,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-03-24 13:42:06,630 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-03-24 13:42:06,631 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-03-24 13:42:06,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-03-24 13:42:06,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:06,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-03-24 13:42:06,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,632 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,632 INFO L185 Difference]: Start difference. First operand has 33 places, 58 transitions, 169 flow. Second operand 3 states and 245 transitions. [2021-03-24 13:42:06,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 56 transitions, 175 flow [2021-03-24 13:42:06,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 56 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 13:42:06,634 INFO L241 Difference]: Finished difference. Result has 34 places, 56 transitions, 164 flow [2021-03-24 13:42:06,634 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=34, PETRI_TRANSITIONS=56} [2021-03-24 13:42:06,634 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -10 predicate places. [2021-03-24 13:42:06,634 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 56 transitions, 164 flow [2021-03-24 13:42:06,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,635 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:06,635 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:06,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 13:42:06,635 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:06,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:06,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1847729876, now seen corresponding path program 1 times [2021-03-24 13:42:06,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:06,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890631534] [2021-03-24 13:42:06,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:06,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:06,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:06,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:06,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:42:06,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:06,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:06,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:06,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890631534] [2021-03-24 13:42:06,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:06,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:42:06,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994931670] [2021-03-24 13:42:06,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:42:06,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:06,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:42:06,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:42:06,652 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-03-24 13:42:06,652 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 56 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:06,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-03-24 13:42:06,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:06,663 INFO L129 PetriNetUnfolder]: 41/94 cut-off events. [2021-03-24 13:42:06,663 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2021-03-24 13:42:06,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 94 events. 41/94 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 255 event pairs, 0 based on Foata normal form. 20/114 useless extension candidates. Maximal degree in co-relation 107. Up to 20 conditions per place. [2021-03-24 13:42:06,664 INFO L132 encePairwiseOnDemand]: 82/87 looper letters, 3 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2021-03-24 13:42:06,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 52 transitions, 160 flow [2021-03-24 13:42:06,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:42:06,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:42:06,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-03-24 13:42:06,665 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-03-24 13:42:06,665 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-03-24 13:42:06,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-03-24 13:42:06,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:06,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-03-24 13:42:06,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,667 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,667 INFO L185 Difference]: Start difference. First operand has 34 places, 56 transitions, 164 flow. Second operand 3 states and 245 transitions. [2021-03-24 13:42:06,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 52 transitions, 160 flow [2021-03-24 13:42:06,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 52 transitions, 159 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 13:42:06,668 INFO L241 Difference]: Finished difference. Result has 35 places, 52 transitions, 153 flow [2021-03-24 13:42:06,668 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=35, PETRI_TRANSITIONS=52} [2021-03-24 13:42:06,668 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -9 predicate places. [2021-03-24 13:42:06,669 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 52 transitions, 153 flow [2021-03-24 13:42:06,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,669 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:06,669 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:06,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 13:42:06,669 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:06,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:06,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1199705006, now seen corresponding path program 1 times [2021-03-24 13:42:06,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:06,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547570739] [2021-03-24 13:42:06,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:06,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:06,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:06,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:06,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:42:06,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:06,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:06,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547570739] [2021-03-24 13:42:06,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:06,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:42:06,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381005094] [2021-03-24 13:42:06,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:42:06,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:06,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:42:06,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:42:06,686 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-03-24 13:42:06,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 52 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:06,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-03-24 13:42:06,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:06,695 INFO L129 PetriNetUnfolder]: 21/64 cut-off events. [2021-03-24 13:42:06,695 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-03-24 13:42:06,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 64 events. 21/64 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 144 event pairs, 0 based on Foata normal form. 6/70 useless extension candidates. Maximal degree in co-relation 78. Up to 12 conditions per place. [2021-03-24 13:42:06,696 INFO L132 encePairwiseOnDemand]: 83/87 looper letters, 4 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2021-03-24 13:42:06,696 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 49 transitions, 154 flow [2021-03-24 13:42:06,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:42:06,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:42:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-03-24 13:42:06,697 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-03-24 13:42:06,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-03-24 13:42:06,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-03-24 13:42:06,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:06,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-03-24 13:42:06,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,698 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,698 INFO L185 Difference]: Start difference. First operand has 35 places, 52 transitions, 153 flow. Second operand 3 states and 245 transitions. [2021-03-24 13:42:06,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 49 transitions, 154 flow [2021-03-24 13:42:06,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 153 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 13:42:06,699 INFO L241 Difference]: Finished difference. Result has 36 places, 49 transitions, 145 flow [2021-03-24 13:42:06,700 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=36, PETRI_TRANSITIONS=49} [2021-03-24 13:42:06,700 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -8 predicate places. [2021-03-24 13:42:06,700 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 49 transitions, 145 flow [2021-03-24 13:42:06,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,700 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:06,700 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:06,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 13:42:06,700 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:06,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:06,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1754835470, now seen corresponding path program 1 times [2021-03-24 13:42:06,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:06,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213763759] [2021-03-24 13:42:06,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:06,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:06,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:06,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:06,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:42:06,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:06,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:06,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213763759] [2021-03-24 13:42:06,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:06,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:42:06,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383762413] [2021-03-24 13:42:06,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:42:06,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:06,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:42:06,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:42:06,718 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-03-24 13:42:06,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 49 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:06,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-03-24 13:42:06,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:06,732 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-03-24 13:42:06,732 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-24 13:42:06,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 22 events. 0/22 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 6/28 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 13:42:06,733 INFO L132 encePairwiseOnDemand]: 80/87 looper letters, 1 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2021-03-24 13:42:06,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 22 transitions, 68 flow [2021-03-24 13:42:06,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:42:06,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:42:06,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-03-24 13:42:06,733 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-03-24 13:42:06,734 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-03-24 13:42:06,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-03-24 13:42:06,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:06,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-03-24 13:42:06,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,735 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,735 INFO L185 Difference]: Start difference. First operand has 36 places, 49 transitions, 145 flow. Second operand 3 states and 245 transitions. [2021-03-24 13:42:06,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 22 transitions, 68 flow [2021-03-24 13:42:06,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 22 transitions, 67 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 13:42:06,736 INFO L241 Difference]: Finished difference. Result has 37 places, 22 transitions, 65 flow [2021-03-24 13:42:06,736 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=37, PETRI_TRANSITIONS=22} [2021-03-24 13:42:06,736 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -7 predicate places. [2021-03-24 13:42:06,736 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 22 transitions, 65 flow [2021-03-24 13:42:06,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:06,736 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:06,736 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:06,736 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 13:42:06,736 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:06,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:06,737 INFO L82 PathProgramCache]: Analyzing trace with hash 976181548, now seen corresponding path program 1 times [2021-03-24 13:42:06,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:06,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133219238] [2021-03-24 13:42:06,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:06,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:06,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:06,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:06,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:06,846 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:06,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:06,889 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:06,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:06,909 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:42:06,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:42:06,932 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:42:06,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:42:06,960 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:42:06,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:42:06,993 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:06,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:07,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133219238] [2021-03-24 13:42:07,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:07,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:07,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191015344] [2021-03-24 13:42:07,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:07,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:07,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:07,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:07,024 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:07,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 22 transitions, 65 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:07,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:07,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:07,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:07,160 INFO L129 PetriNetUnfolder]: 387/724 cut-off events. [2021-03-24 13:42:07,160 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:42:07,162 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 724 events. 387/724 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4118 event pairs, 129 based on Foata normal form. 1/669 useless extension candidates. Maximal degree in co-relation 1315. Up to 225 conditions per place. [2021-03-24 13:42:07,169 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 27 selfloop transitions, 6 changer transitions 1/48 dead transitions. [2021-03-24 13:42:07,169 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 48 transitions, 185 flow [2021-03-24 13:42:07,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:07,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:07,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:07,185 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:07,185 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:07,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:07,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:07,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:07,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:07,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:07,188 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:07,188 INFO L185 Difference]: Start difference. First operand has 37 places, 22 transitions, 65 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:07,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 48 transitions, 185 flow [2021-03-24 13:42:07,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 13:42:07,190 INFO L241 Difference]: Finished difference. Result has 51 places, 27 transitions, 111 flow [2021-03-24 13:42:07,190 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=111, PETRI_PLACES=51, PETRI_TRANSITIONS=27} [2021-03-24 13:42:07,190 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2021-03-24 13:42:07,190 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 27 transitions, 111 flow [2021-03-24 13:42:07,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:07,190 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:07,190 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:07,191 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 13:42:07,191 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:07,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:07,191 INFO L82 PathProgramCache]: Analyzing trace with hash 2007826080, now seen corresponding path program 2 times [2021-03-24 13:42:07,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:07,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793549968] [2021-03-24 13:42:07,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:07,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:07,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:07,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:07,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:07,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:07,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:07,282 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:07,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:07,296 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:07,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:07,312 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:42:07,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:42:07,339 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:42:07,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:42:07,363 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:07,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:07,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793549968] [2021-03-24 13:42:07,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:07,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:07,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249068200] [2021-03-24 13:42:07,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:07,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:07,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:07,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:07,386 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:07,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 27 transitions, 111 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:07,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:07,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:07,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:07,518 INFO L129 PetriNetUnfolder]: 453/1033 cut-off events. [2021-03-24 13:42:07,518 INFO L130 PetriNetUnfolder]: For 1007/1012 co-relation queries the response was YES. [2021-03-24 13:42:07,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2637 conditions, 1033 events. 453/1033 cut-off events. For 1007/1012 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6897 event pairs, 147 based on Foata normal form. 1/977 useless extension candidates. Maximal degree in co-relation 2622. Up to 297 conditions per place. [2021-03-24 13:42:07,525 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 38 selfloop transitions, 9 changer transitions 2/63 dead transitions. [2021-03-24 13:42:07,525 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 379 flow [2021-03-24 13:42:07,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:07,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:07,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:07,526 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:07,526 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:07,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:07,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:07,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:07,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:07,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:07,529 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:07,529 INFO L185 Difference]: Start difference. First operand has 51 places, 27 transitions, 111 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:07,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 379 flow [2021-03-24 13:42:07,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 360 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-24 13:42:07,531 INFO L241 Difference]: Finished difference. Result has 63 places, 35 transitions, 201 flow [2021-03-24 13:42:07,532 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=201, PETRI_PLACES=63, PETRI_TRANSITIONS=35} [2021-03-24 13:42:07,532 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 19 predicate places. [2021-03-24 13:42:07,532 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 35 transitions, 201 flow [2021-03-24 13:42:07,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:07,532 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:07,532 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:07,532 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 13:42:07,532 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:07,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:07,533 INFO L82 PathProgramCache]: Analyzing trace with hash -326948672, now seen corresponding path program 3 times [2021-03-24 13:42:07,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:07,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137812107] [2021-03-24 13:42:07,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:07,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:07,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:07,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:07,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:07,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:07,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:07,572 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:07,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:07,584 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:07,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:07,601 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:07,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:07,622 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:42:07,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:42:07,681 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:07,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:07,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:07,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137812107] [2021-03-24 13:42:07,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:07,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:07,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460913463] [2021-03-24 13:42:07,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:07,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:07,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:07,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:07,713 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:07,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 35 transitions, 201 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:07,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:07,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:07,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:07,854 INFO L129 PetriNetUnfolder]: 535/1413 cut-off events. [2021-03-24 13:42:07,854 INFO L130 PetriNetUnfolder]: For 3422/3547 co-relation queries the response was YES. [2021-03-24 13:42:07,859 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4522 conditions, 1413 events. 535/1413 cut-off events. For 3422/3547 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 11134 event pairs, 164 based on Foata normal form. 1/1351 useless extension candidates. Maximal degree in co-relation 4501. Up to 408 conditions per place. [2021-03-24 13:42:07,865 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 49 selfloop transitions, 18 changer transitions 1/82 dead transitions. [2021-03-24 13:42:07,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 663 flow [2021-03-24 13:42:07,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:07,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:07,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:07,867 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:07,867 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:07,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:07,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:07,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:07,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:07,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:07,870 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:07,870 INFO L185 Difference]: Start difference. First operand has 63 places, 35 transitions, 201 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:07,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 663 flow [2021-03-24 13:42:07,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 82 transitions, 634 flow, removed 11 selfloop flow, removed 2 redundant places. [2021-03-24 13:42:07,875 INFO L241 Difference]: Finished difference. Result has 75 places, 50 transitions, 411 flow [2021-03-24 13:42:07,876 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=411, PETRI_PLACES=75, PETRI_TRANSITIONS=50} [2021-03-24 13:42:07,876 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 31 predicate places. [2021-03-24 13:42:07,876 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 50 transitions, 411 flow [2021-03-24 13:42:07,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:07,876 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:07,876 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:07,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 13:42:07,876 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:07,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:07,877 INFO L82 PathProgramCache]: Analyzing trace with hash -762664422, now seen corresponding path program 4 times [2021-03-24 13:42:07,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:07,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549866573] [2021-03-24 13:42:07,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:07,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:07,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:07,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:07,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:07,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:07,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:07,907 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:07,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:07,918 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:07,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:07,933 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:42:07,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:42:07,954 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:42:07,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:42:07,980 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:07,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:08,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:08,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549866573] [2021-03-24 13:42:08,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:08,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:08,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163331532] [2021-03-24 13:42:08,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:08,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:08,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:08,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:08,004 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:08,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 50 transitions, 411 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:08,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:08,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:08,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:08,193 INFO L129 PetriNetUnfolder]: 640/1951 cut-off events. [2021-03-24 13:42:08,193 INFO L130 PetriNetUnfolder]: For 8582/8735 co-relation queries the response was YES. [2021-03-24 13:42:08,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7290 conditions, 1951 events. 640/1951 cut-off events. For 8582/8735 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 18283 event pairs, 193 based on Foata normal form. 1/1874 useless extension candidates. Maximal degree in co-relation 7263. Up to 552 conditions per place. [2021-03-24 13:42:08,208 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 67 selfloop transitions, 32 changer transitions 1/114 dead transitions. [2021-03-24 13:42:08,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 114 transitions, 1234 flow [2021-03-24 13:42:08,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:08,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:08,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:08,210 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:08,210 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:08,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:08,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:08,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:08,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:08,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:08,212 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:08,212 INFO L185 Difference]: Start difference. First operand has 75 places, 50 transitions, 411 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:08,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 114 transitions, 1234 flow [2021-03-24 13:42:08,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 114 transitions, 1206 flow, removed 10 selfloop flow, removed 2 redundant places. [2021-03-24 13:42:08,224 INFO L241 Difference]: Finished difference. Result has 87 places, 77 transitions, 871 flow [2021-03-24 13:42:08,224 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=871, PETRI_PLACES=87, PETRI_TRANSITIONS=77} [2021-03-24 13:42:08,225 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 43 predicate places. [2021-03-24 13:42:08,225 INFO L480 AbstractCegarLoop]: Abstraction has has 87 places, 77 transitions, 871 flow [2021-03-24 13:42:08,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:08,225 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:08,225 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:08,225 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 13:42:08,225 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:08,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:08,226 INFO L82 PathProgramCache]: Analyzing trace with hash -121259338, now seen corresponding path program 5 times [2021-03-24 13:42:08,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:08,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97174575] [2021-03-24 13:42:08,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:08,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:08,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:08,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:08,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:08,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:08,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:08,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:08,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:42:08,262 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:08,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:08,276 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:08,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:08,303 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:42:08,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:42:08,330 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:08,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:08,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:08,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97174575] [2021-03-24 13:42:08,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:08,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:08,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231748807] [2021-03-24 13:42:08,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:08,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:08,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:08,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:08,355 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:08,356 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 77 transitions, 871 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:08,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:08,356 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:08,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:08,664 INFO L129 PetriNetUnfolder]: 780/2943 cut-off events. [2021-03-24 13:42:08,664 INFO L130 PetriNetUnfolder]: For 18048/18351 co-relation queries the response was YES. [2021-03-24 13:42:08,675 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11823 conditions, 2943 events. 780/2943 cut-off events. For 18048/18351 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 32929 event pairs, 261 based on Foata normal form. 1/2844 useless extension candidates. Maximal degree in co-relation 11790. Up to 800 conditions per place. [2021-03-24 13:42:08,687 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 83 selfloop transitions, 43 changer transitions 1/141 dead transitions. [2021-03-24 13:42:08,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 141 transitions, 1874 flow [2021-03-24 13:42:08,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:08,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:08,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:08,689 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:08,689 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:08,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:08,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:08,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:08,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:08,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:08,692 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:08,692 INFO L185 Difference]: Start difference. First operand has 87 places, 77 transitions, 871 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:08,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 141 transitions, 1874 flow [2021-03-24 13:42:08,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 141 transitions, 1844 flow, removed 9 selfloop flow, removed 2 redundant places. [2021-03-24 13:42:08,725 INFO L241 Difference]: Finished difference. Result has 99 places, 96 transitions, 1294 flow [2021-03-24 13:42:08,726 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1294, PETRI_PLACES=99, PETRI_TRANSITIONS=96} [2021-03-24 13:42:08,726 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 55 predicate places. [2021-03-24 13:42:08,726 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 96 transitions, 1294 flow [2021-03-24 13:42:08,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:08,726 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:08,726 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:08,726 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 13:42:08,726 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:08,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:08,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1992160978, now seen corresponding path program 6 times [2021-03-24 13:42:08,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:08,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831302086] [2021-03-24 13:42:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:08,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:08,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:08,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:08,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:08,747 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:08,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:08,755 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:08,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:08,765 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:42:08,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:42:08,779 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:08,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:08,798 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:42:08,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:42:08,822 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:08,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:08,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831302086] [2021-03-24 13:42:08,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:08,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:08,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888196524] [2021-03-24 13:42:08,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:08,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:08,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:08,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:08,846 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:08,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 96 transitions, 1294 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:08,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:08,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:08,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:09,219 INFO L129 PetriNetUnfolder]: 839/3202 cut-off events. [2021-03-24 13:42:09,220 INFO L130 PetriNetUnfolder]: For 28552/29372 co-relation queries the response was YES. [2021-03-24 13:42:09,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14722 conditions, 3202 events. 839/3202 cut-off events. For 28552/29372 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 36590 event pairs, 276 based on Foata normal form. 1/3086 useless extension candidates. Maximal degree in co-relation 14683. Up to 897 conditions per place. [2021-03-24 13:42:09,248 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 76 selfloop transitions, 55 changer transitions 2/147 dead transitions. [2021-03-24 13:42:09,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 147 transitions, 2208 flow [2021-03-24 13:42:09,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:09,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:09,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:09,251 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:09,251 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:09,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:09,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:09,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:09,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:09,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:09,253 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:09,253 INFO L185 Difference]: Start difference. First operand has 99 places, 96 transitions, 1294 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:09,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 147 transitions, 2208 flow [2021-03-24 13:42:09,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 147 transitions, 2130 flow, removed 26 selfloop flow, removed 2 redundant places. [2021-03-24 13:42:09,301 INFO L241 Difference]: Finished difference. Result has 111 places, 119 transitions, 1824 flow [2021-03-24 13:42:09,301 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1824, PETRI_PLACES=111, PETRI_TRANSITIONS=119} [2021-03-24 13:42:09,301 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 67 predicate places. [2021-03-24 13:42:09,301 INFO L480 AbstractCegarLoop]: Abstraction has has 111 places, 119 transitions, 1824 flow [2021-03-24 13:42:09,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:09,301 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:09,301 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:09,301 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 13:42:09,302 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:09,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:09,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1257254258, now seen corresponding path program 7 times [2021-03-24 13:42:09,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:09,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850037705] [2021-03-24 13:42:09,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:09,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:09,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:09,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:09,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:09,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:09,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:09,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:09,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:42:09,337 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-24 13:42:09,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 13:42:09,362 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 13:42:09,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:42:09,390 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:42:09,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:42:09,414 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:09,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:09,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:09,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850037705] [2021-03-24 13:42:09,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:09,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:09,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581307162] [2021-03-24 13:42:09,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:09,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:09,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:09,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:09,438 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:09,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 119 transitions, 1824 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:09,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:09,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:09,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:09,870 INFO L129 PetriNetUnfolder]: 849/3417 cut-off events. [2021-03-24 13:42:09,870 INFO L130 PetriNetUnfolder]: For 41834/43363 co-relation queries the response was YES. [2021-03-24 13:42:09,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17594 conditions, 3417 events. 849/3417 cut-off events. For 41834/43363 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 39762 event pairs, 377 based on Foata normal form. 4/3302 useless extension candidates. Maximal degree in co-relation 17549. Up to 903 conditions per place. [2021-03-24 13:42:09,899 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 110 selfloop transitions, 62 changer transitions 2/188 dead transitions. [2021-03-24 13:42:09,900 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 188 transitions, 3153 flow [2021-03-24 13:42:09,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:09,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:09,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:09,901 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:09,901 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:09,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:09,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:09,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:09,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:09,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:09,904 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:09,904 INFO L185 Difference]: Start difference. First operand has 111 places, 119 transitions, 1824 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:09,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 188 transitions, 3153 flow [2021-03-24 13:42:09,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 188 transitions, 2999 flow, removed 52 selfloop flow, removed 3 redundant places. [2021-03-24 13:42:09,973 INFO L241 Difference]: Finished difference. Result has 122 places, 137 transitions, 2229 flow [2021-03-24 13:42:09,974 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1741, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2229, PETRI_PLACES=122, PETRI_TRANSITIONS=137} [2021-03-24 13:42:09,974 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 78 predicate places. [2021-03-24 13:42:09,974 INFO L480 AbstractCegarLoop]: Abstraction has has 122 places, 137 transitions, 2229 flow [2021-03-24 13:42:09,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:09,974 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:09,975 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:09,975 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 13:42:09,975 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:09,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:09,975 INFO L82 PathProgramCache]: Analyzing trace with hash -575836876, now seen corresponding path program 8 times [2021-03-24 13:42:09,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:09,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289460106] [2021-03-24 13:42:09,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:09,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:09,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:09,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:09,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:09,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:09,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:10,004 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:10,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:10,014 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:10,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:10,028 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:10,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:10,047 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:42:10,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:42:10,072 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:10,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:10,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:10,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289460106] [2021-03-24 13:42:10,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:10,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:10,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643872311] [2021-03-24 13:42:10,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:10,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:10,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:10,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:10,095 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:10,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 137 transitions, 2229 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:10,096 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:10,096 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:10,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:10,744 INFO L129 PetriNetUnfolder]: 852/3844 cut-off events. [2021-03-24 13:42:10,745 INFO L130 PetriNetUnfolder]: For 53608/56365 co-relation queries the response was YES. [2021-03-24 13:42:10,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20609 conditions, 3844 events. 852/3844 cut-off events. For 53608/56365 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 47513 event pairs, 345 based on Foata normal form. 6/3691 useless extension candidates. Maximal degree in co-relation 20559. Up to 1012 conditions per place. [2021-03-24 13:42:10,784 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 125 selfloop transitions, 80 changer transitions 1/220 dead transitions. [2021-03-24 13:42:10,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 220 transitions, 3893 flow [2021-03-24 13:42:10,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:10,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:10,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:10,786 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:10,786 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:10,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:10,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:10,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:10,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:10,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:10,789 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:10,789 INFO L185 Difference]: Start difference. First operand has 122 places, 137 transitions, 2229 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:10,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 220 transitions, 3893 flow [2021-03-24 13:42:10,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 220 transitions, 3749 flow, removed 52 selfloop flow, removed 2 redundant places. [2021-03-24 13:42:10,882 INFO L241 Difference]: Finished difference. Result has 134 places, 169 transitions, 2991 flow [2021-03-24 13:42:10,883 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2991, PETRI_PLACES=134, PETRI_TRANSITIONS=169} [2021-03-24 13:42:10,883 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 90 predicate places. [2021-03-24 13:42:10,883 INFO L480 AbstractCegarLoop]: Abstraction has has 134 places, 169 transitions, 2991 flow [2021-03-24 13:42:10,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:10,883 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:10,883 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:10,883 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 13:42:10,883 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:10,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:10,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1030299834, now seen corresponding path program 9 times [2021-03-24 13:42:10,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:10,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307878223] [2021-03-24 13:42:10,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:10,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:10,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:10,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:10,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:10,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:10,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:10,930 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:10,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:10,940 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:10,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:10,956 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:42:10,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:42:10,976 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:42:10,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:42:11,001 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:11,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:11,022 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 13:42:11,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307878223] [2021-03-24 13:42:11,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:11,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:11,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511087004] [2021-03-24 13:42:11,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:11,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:11,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:11,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:11,024 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:11,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 169 transitions, 2991 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:11,025 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:11,025 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:11,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:11,655 INFO L129 PetriNetUnfolder]: 843/4435 cut-off events. [2021-03-24 13:42:11,655 INFO L130 PetriNetUnfolder]: For 72449/74976 co-relation queries the response was YES. [2021-03-24 13:42:11,682 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24699 conditions, 4435 events. 843/4435 cut-off events. For 72449/74976 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 58911 event pairs, 337 based on Foata normal form. 12/4258 useless extension candidates. Maximal degree in co-relation 24643. Up to 1069 conditions per place. [2021-03-24 13:42:11,699 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 155 selfloop transitions, 96 changer transitions 1/266 dead transitions. [2021-03-24 13:42:11,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 266 transitions, 5123 flow [2021-03-24 13:42:11,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:11,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:11,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:11,701 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:11,701 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:11,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:11,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:11,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:11,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:11,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:11,703 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:11,703 INFO L185 Difference]: Start difference. First operand has 134 places, 169 transitions, 2991 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:11,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 266 transitions, 5123 flow [2021-03-24 13:42:11,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 266 transitions, 4915 flow, removed 84 selfloop flow, removed 2 redundant places. [2021-03-24 13:42:11,843 INFO L241 Difference]: Finished difference. Result has 146 places, 213 transitions, 4043 flow [2021-03-24 13:42:11,844 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2865, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4043, PETRI_PLACES=146, PETRI_TRANSITIONS=213} [2021-03-24 13:42:11,844 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 102 predicate places. [2021-03-24 13:42:11,844 INFO L480 AbstractCegarLoop]: Abstraction has has 146 places, 213 transitions, 4043 flow [2021-03-24 13:42:11,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:11,844 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:11,844 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:11,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-24 13:42:11,844 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:11,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:11,845 INFO L82 PathProgramCache]: Analyzing trace with hash -407352836, now seen corresponding path program 10 times [2021-03-24 13:42:11,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:11,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483114671] [2021-03-24 13:42:11,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:11,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:11,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:11,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:11,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:11,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:11,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:11,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:11,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:42:11,890 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:11,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:11,905 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:11,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:11,925 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:42:11,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:42:11,948 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:11,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:11,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:11,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483114671] [2021-03-24 13:42:11,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:11,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:11,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509368611] [2021-03-24 13:42:11,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:11,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:11,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:11,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:11,972 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:11,973 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 213 transitions, 4043 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:11,973 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:11,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:11,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:12,767 INFO L129 PetriNetUnfolder]: 823/4619 cut-off events. [2021-03-24 13:42:12,768 INFO L130 PetriNetUnfolder]: For 90064/92699 co-relation queries the response was YES. [2021-03-24 13:42:12,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27481 conditions, 4619 events. 823/4619 cut-off events. For 90064/92699 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 62790 event pairs, 340 based on Foata normal form. 15/4453 useless extension candidates. Maximal degree in co-relation 27419. Up to 1087 conditions per place. [2021-03-24 13:42:12,897 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 171 selfloop transitions, 118 changer transitions 3/306 dead transitions. [2021-03-24 13:42:12,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 306 transitions, 6335 flow [2021-03-24 13:42:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:12,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:12,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:12,898 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:12,898 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:12,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:12,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:12,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:12,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:12,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:12,901 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:12,901 INFO L185 Difference]: Start difference. First operand has 146 places, 213 transitions, 4043 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:12,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 306 transitions, 6335 flow [2021-03-24 13:42:13,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 306 transitions, 6127 flow, removed 84 selfloop flow, removed 2 redundant places. [2021-03-24 13:42:13,068 INFO L241 Difference]: Finished difference. Result has 158 places, 237 transitions, 4841 flow [2021-03-24 13:42:13,068 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=3891, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4841, PETRI_PLACES=158, PETRI_TRANSITIONS=237} [2021-03-24 13:42:13,068 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 114 predicate places. [2021-03-24 13:42:13,068 INFO L480 AbstractCegarLoop]: Abstraction has has 158 places, 237 transitions, 4841 flow [2021-03-24 13:42:13,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:13,068 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:13,068 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:13,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-24 13:42:13,069 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:13,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:13,069 INFO L82 PathProgramCache]: Analyzing trace with hash -808104420, now seen corresponding path program 11 times [2021-03-24 13:42:13,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:13,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080689176] [2021-03-24 13:42:13,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:13,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:13,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:13,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:13,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:13,106 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:13,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:13,113 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:13,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:13,125 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:42:13,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:42:13,148 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:42:13,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:42:13,178 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:42:13,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:42:13,201 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:13,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:13,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080689176] [2021-03-24 13:42:13,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:13,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:13,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26052979] [2021-03-24 13:42:13,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:13,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:13,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:13,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:13,224 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:13,225 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 237 transitions, 4841 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:13,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:13,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:13,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:14,185 INFO L129 PetriNetUnfolder]: 806/4709 cut-off events. [2021-03-24 13:42:14,185 INFO L130 PetriNetUnfolder]: For 110621/115107 co-relation queries the response was YES. [2021-03-24 13:42:14,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29881 conditions, 4709 events. 806/4709 cut-off events. For 110621/115107 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 64747 event pairs, 415 based on Foata normal form. 20/4544 useless extension candidates. Maximal degree in co-relation 29813. Up to 983 conditions per place. [2021-03-24 13:42:14,229 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 163 selfloop transitions, 129 changer transitions 2/308 dead transitions. [2021-03-24 13:42:14,229 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 308 transitions, 6847 flow [2021-03-24 13:42:14,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:14,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:14,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:14,231 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:14,231 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:14,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:14,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:14,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:14,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:14,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:14,233 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:14,233 INFO L185 Difference]: Start difference. First operand has 158 places, 237 transitions, 4841 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:14,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 308 transitions, 6847 flow [2021-03-24 13:42:14,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 308 transitions, 6635 flow, removed 86 selfloop flow, removed 2 redundant places. [2021-03-24 13:42:14,515 INFO L241 Difference]: Finished difference. Result has 170 places, 251 transitions, 5501 flow [2021-03-24 13:42:14,515 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=4687, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5501, PETRI_PLACES=170, PETRI_TRANSITIONS=251} [2021-03-24 13:42:14,516 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 126 predicate places. [2021-03-24 13:42:14,516 INFO L480 AbstractCegarLoop]: Abstraction has has 170 places, 251 transitions, 5501 flow [2021-03-24 13:42:14,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:14,516 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:14,516 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:14,516 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-24 13:42:14,516 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:14,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:14,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1473127532, now seen corresponding path program 12 times [2021-03-24 13:42:14,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:14,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640997011] [2021-03-24 13:42:14,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:14,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:14,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:14,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:14,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:14,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:14,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:14,542 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:42:14,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:42:14,598 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:42:14,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:42:14,614 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:14,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:14,636 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:42:14,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:42:14,662 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:14,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:14,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:14,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640997011] [2021-03-24 13:42:14,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:14,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:14,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055201111] [2021-03-24 13:42:14,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:14,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:14,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:14,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:14,688 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:14,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 251 transitions, 5501 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:14,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:14,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:14,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:15,685 INFO L129 PetriNetUnfolder]: 783/5096 cut-off events. [2021-03-24 13:42:15,685 INFO L130 PetriNetUnfolder]: For 129061/133488 co-relation queries the response was YES. [2021-03-24 13:42:15,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32631 conditions, 5096 events. 783/5096 cut-off events. For 129061/133488 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 72769 event pairs, 292 based on Foata normal form. 32/4870 useless extension candidates. Maximal degree in co-relation 32557. Up to 1106 conditions per place. [2021-03-24 13:42:15,786 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 182 selfloop transitions, 152 changer transitions 1/349 dead transitions. [2021-03-24 13:42:15,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 349 transitions, 8369 flow [2021-03-24 13:42:15,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:15,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:15,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:15,788 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:15,788 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:15,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:15,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:15,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:15,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:15,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:15,791 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:15,791 INFO L185 Difference]: Start difference. First operand has 170 places, 251 transitions, 5501 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:15,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 349 transitions, 8369 flow [2021-03-24 13:42:16,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 349 transitions, 8114 flow, removed 106 selfloop flow, removed 3 redundant places. [2021-03-24 13:42:16,145 INFO L241 Difference]: Finished difference. Result has 180 places, 282 transitions, 6572 flow [2021-03-24 13:42:16,145 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=5337, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6572, PETRI_PLACES=180, PETRI_TRANSITIONS=282} [2021-03-24 13:42:16,145 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 136 predicate places. [2021-03-24 13:42:16,145 INFO L480 AbstractCegarLoop]: Abstraction has has 180 places, 282 transitions, 6572 flow [2021-03-24 13:42:16,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:16,146 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:16,146 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:16,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-24 13:42:16,146 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:16,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:16,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1237463442, now seen corresponding path program 13 times [2021-03-24 13:42:16,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:16,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498312695] [2021-03-24 13:42:16,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:16,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:16,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:16,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:16,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:16,166 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:16,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:16,174 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:16,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:16,185 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:42:16,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:42:16,210 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:42:16,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:42:16,244 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:42:16,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:42:16,272 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:16,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:16,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:16,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498312695] [2021-03-24 13:42:16,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:16,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:16,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213981635] [2021-03-24 13:42:16,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:16,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:16,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:16,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:16,297 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:16,297 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 282 transitions, 6572 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:16,297 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:16,297 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:16,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:17,339 INFO L129 PetriNetUnfolder]: 777/5002 cut-off events. [2021-03-24 13:42:17,339 INFO L130 PetriNetUnfolder]: For 138838/143557 co-relation queries the response was YES. [2021-03-24 13:42:17,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33484 conditions, 5002 events. 777/5002 cut-off events. For 138838/143557 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 71023 event pairs, 442 based on Foata normal form. 23/4815 useless extension candidates. Maximal degree in co-relation 33406. Up to 982 conditions per place. [2021-03-24 13:42:17,376 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 174 selfloop transitions, 165 changer transitions 1/354 dead transitions. [2021-03-24 13:42:17,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 354 transitions, 8885 flow [2021-03-24 13:42:17,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:17,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:17,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:17,377 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:17,377 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:17,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:17,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:17,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:17,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:17,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:17,380 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:17,380 INFO L185 Difference]: Start difference. First operand has 180 places, 282 transitions, 6572 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:17,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 354 transitions, 8885 flow [2021-03-24 13:42:17,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 354 transitions, 8502 flow, removed 107 selfloop flow, removed 3 redundant places. [2021-03-24 13:42:17,691 INFO L241 Difference]: Finished difference. Result has 190 places, 295 transitions, 7135 flow [2021-03-24 13:42:17,692 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=6309, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7135, PETRI_PLACES=190, PETRI_TRANSITIONS=295} [2021-03-24 13:42:17,692 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 146 predicate places. [2021-03-24 13:42:17,692 INFO L480 AbstractCegarLoop]: Abstraction has has 190 places, 295 transitions, 7135 flow [2021-03-24 13:42:17,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:17,692 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:17,692 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:17,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-24 13:42:17,692 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:17,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:17,693 INFO L82 PathProgramCache]: Analyzing trace with hash 2007168412, now seen corresponding path program 14 times [2021-03-24 13:42:17,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:17,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107357304] [2021-03-24 13:42:17,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:17,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:17,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:17,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:17,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:17,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:17,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:17,715 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:17,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:17,725 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:17,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:17,738 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:17,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:17,756 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:42:17,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:42:17,779 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:17,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:17,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:17,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107357304] [2021-03-24 13:42:17,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:17,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:17,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706107022] [2021-03-24 13:42:17,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:17,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:17,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:17,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:17,801 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:17,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 295 transitions, 7135 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:17,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:17,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:17,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:18,874 INFO L129 PetriNetUnfolder]: 781/5121 cut-off events. [2021-03-24 13:42:18,874 INFO L130 PetriNetUnfolder]: For 142660/147849 co-relation queries the response was YES. [2021-03-24 13:42:18,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34015 conditions, 5121 events. 781/5121 cut-off events. For 142660/147849 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 73195 event pairs, 431 based on Foata normal form. 34/4921 useless extension candidates. Maximal degree in co-relation 33932. Up to 1106 conditions per place. [2021-03-24 13:42:18,918 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 157 selfloop transitions, 193 changer transitions 1/365 dead transitions. [2021-03-24 13:42:18,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 365 transitions, 9614 flow [2021-03-24 13:42:18,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:18,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:18,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:18,920 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:18,920 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:18,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:18,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:18,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:18,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:18,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:18,922 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:18,922 INFO L185 Difference]: Start difference. First operand has 190 places, 295 transitions, 7135 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:18,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 365 transitions, 9614 flow [2021-03-24 13:42:19,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 365 transitions, 9247 flow, removed 76 selfloop flow, removed 3 redundant places. [2021-03-24 13:42:19,413 INFO L241 Difference]: Finished difference. Result has 200 places, 335 transitions, 8647 flow [2021-03-24 13:42:19,413 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=6860, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8647, PETRI_PLACES=200, PETRI_TRANSITIONS=335} [2021-03-24 13:42:19,414 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 156 predicate places. [2021-03-24 13:42:19,414 INFO L480 AbstractCegarLoop]: Abstraction has has 200 places, 335 transitions, 8647 flow [2021-03-24 13:42:19,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:19,414 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:19,414 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:19,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-24 13:42:19,414 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:19,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:19,415 INFO L82 PathProgramCache]: Analyzing trace with hash 123343342, now seen corresponding path program 15 times [2021-03-24 13:42:19,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:19,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615405538] [2021-03-24 13:42:19,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:19,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:19,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:19,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:19,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:19,435 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:19,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:19,442 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:19,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:19,453 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:19,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:19,470 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:42:19,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:42:19,492 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:42:19,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:42:19,520 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:19,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:19,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615405538] [2021-03-24 13:42:19,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:19,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:19,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413405708] [2021-03-24 13:42:19,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:19,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:19,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:19,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:19,545 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:19,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 335 transitions, 8647 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:19,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:19,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:19,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:20,771 INFO L129 PetriNetUnfolder]: 774/5250 cut-off events. [2021-03-24 13:42:20,771 INFO L130 PetriNetUnfolder]: For 152098/156880 co-relation queries the response was YES. [2021-03-24 13:42:20,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35182 conditions, 5250 events. 774/5250 cut-off events. For 152098/156880 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 76148 event pairs, 531 based on Foata normal form. 30/5021 useless extension candidates. Maximal degree in co-relation 35094. Up to 982 conditions per place. [2021-03-24 13:42:20,814 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 150 selfloop transitions, 231 changer transitions 1/396 dead transitions. [2021-03-24 13:42:20,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 396 transitions, 10843 flow [2021-03-24 13:42:20,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:20,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:20,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:20,815 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:20,815 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:20,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:20,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:20,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:20,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:20,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:20,817 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:20,817 INFO L185 Difference]: Start difference. First operand has 200 places, 335 transitions, 8647 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:20,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 396 transitions, 10843 flow [2021-03-24 13:42:21,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 396 transitions, 10530 flow, removed 72 selfloop flow, removed 3 redundant places. [2021-03-24 13:42:21,382 INFO L241 Difference]: Finished difference. Result has 209 places, 361 transitions, 9708 flow [2021-03-24 13:42:21,383 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=8406, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9708, PETRI_PLACES=209, PETRI_TRANSITIONS=361} [2021-03-24 13:42:21,383 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 165 predicate places. [2021-03-24 13:42:21,383 INFO L480 AbstractCegarLoop]: Abstraction has has 209 places, 361 transitions, 9708 flow [2021-03-24 13:42:21,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:21,383 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:21,383 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:21,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-24 13:42:21,384 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:21,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:21,384 INFO L82 PathProgramCache]: Analyzing trace with hash 2117955118, now seen corresponding path program 16 times [2021-03-24 13:42:21,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:21,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411363806] [2021-03-24 13:42:21,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:21,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:21,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:21,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:21,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:21,416 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:21,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:21,423 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:21,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:21,433 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:21,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:21,465 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:21,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:21,483 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:42:21,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:42:21,519 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:21,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:21,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:21,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411363806] [2021-03-24 13:42:21,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:21,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:21,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280665935] [2021-03-24 13:42:21,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:21,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:21,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:21,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:21,543 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:21,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 361 transitions, 9708 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:21,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:21,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:21,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:22,778 INFO L129 PetriNetUnfolder]: 763/5329 cut-off events. [2021-03-24 13:42:22,778 INFO L130 PetriNetUnfolder]: For 154412/160333 co-relation queries the response was YES. [2021-03-24 13:42:22,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35737 conditions, 5329 events. 763/5329 cut-off events. For 154412/160333 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 77522 event pairs, 461 based on Foata normal form. 40/5106 useless extension candidates. Maximal degree in co-relation 35645. Up to 1144 conditions per place. [2021-03-24 13:42:22,830 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 116 selfloop transitions, 280 changer transitions 4/414 dead transitions. [2021-03-24 13:42:22,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 414 transitions, 11717 flow [2021-03-24 13:42:22,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:22,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:22,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:22,831 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:22,831 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:22,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:22,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:22,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:22,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:22,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:22,833 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:22,833 INFO L185 Difference]: Start difference. First operand has 209 places, 361 transitions, 9708 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:22,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 414 transitions, 11717 flow [2021-03-24 13:42:23,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 414 transitions, 11149 flow, removed 95 selfloop flow, removed 4 redundant places. [2021-03-24 13:42:23,417 INFO L241 Difference]: Finished difference. Result has 218 places, 382 transitions, 10639 flow [2021-03-24 13:42:23,417 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=9200, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10639, PETRI_PLACES=218, PETRI_TRANSITIONS=382} [2021-03-24 13:42:23,417 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 174 predicate places. [2021-03-24 13:42:23,417 INFO L480 AbstractCegarLoop]: Abstraction has has 218 places, 382 transitions, 10639 flow [2021-03-24 13:42:23,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:23,417 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:23,417 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:23,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-24 13:42:23,418 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:23,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:23,418 INFO L82 PathProgramCache]: Analyzing trace with hash -2132336940, now seen corresponding path program 17 times [2021-03-24 13:42:23,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:23,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606327578] [2021-03-24 13:42:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:23,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:23,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:23,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:23,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:23,434 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:23,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:23,441 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:23,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:23,451 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:23,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:23,465 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:42:23,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:42:23,483 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:42:23,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:42:23,506 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:23,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:23,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:23,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606327578] [2021-03-24 13:42:23,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:23,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:23,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459387647] [2021-03-24 13:42:23,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:23,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:23,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:23,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:23,531 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:23,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 382 transitions, 10639 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:23,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:23,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:23,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:24,808 INFO L129 PetriNetUnfolder]: 756/5372 cut-off events. [2021-03-24 13:42:24,808 INFO L130 PetriNetUnfolder]: For 160127/166007 co-relation queries the response was YES. [2021-03-24 13:42:24,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36292 conditions, 5372 events. 756/5372 cut-off events. For 160127/166007 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 78536 event pairs, 458 based on Foata normal form. 44/5148 useless extension candidates. Maximal degree in co-relation 36195. Up to 1144 conditions per place. [2021-03-24 13:42:24,859 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 117 selfloop transitions, 285 changer transitions 1/417 dead transitions. [2021-03-24 13:42:24,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 417 transitions, 12220 flow [2021-03-24 13:42:24,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:24,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:24,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:24,860 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:24,860 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:24,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:24,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:24,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:24,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:24,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:24,862 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:24,862 INFO L185 Difference]: Start difference. First operand has 218 places, 382 transitions, 10639 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:24,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 417 transitions, 12220 flow [2021-03-24 13:42:25,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 417 transitions, 11882 flow, removed 60 selfloop flow, removed 4 redundant places. [2021-03-24 13:42:25,484 INFO L241 Difference]: Finished difference. Result has 226 places, 397 transitions, 11453 flow [2021-03-24 13:42:25,484 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=10347, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11453, PETRI_PLACES=226, PETRI_TRANSITIONS=397} [2021-03-24 13:42:25,485 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 182 predicate places. [2021-03-24 13:42:25,485 INFO L480 AbstractCegarLoop]: Abstraction has has 226 places, 397 transitions, 11453 flow [2021-03-24 13:42:25,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:25,485 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:25,485 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:25,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-24 13:42:25,485 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:25,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:25,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1431536288, now seen corresponding path program 18 times [2021-03-24 13:42:25,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:25,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834580122] [2021-03-24 13:42:25,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:25,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:25,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:25,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:25,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:25,503 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:25,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:25,510 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:25,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:25,520 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:42:25,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:42:25,534 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:25,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:25,552 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:42:25,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:42:25,575 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:25,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:25,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:25,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834580122] [2021-03-24 13:42:25,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:25,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:25,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632427933] [2021-03-24 13:42:25,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:25,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:25,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:25,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:25,597 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:25,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 397 transitions, 11453 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:25,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:25,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:25,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:26,910 INFO L129 PetriNetUnfolder]: 754/5373 cut-off events. [2021-03-24 13:42:26,910 INFO L130 PetriNetUnfolder]: For 163490/169378 co-relation queries the response was YES. [2021-03-24 13:42:26,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36845 conditions, 5373 events. 754/5373 cut-off events. For 163490/169378 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 78561 event pairs, 464 based on Foata normal form. 44/5149 useless extension candidates. Maximal degree in co-relation 36745. Up to 1144 conditions per place. [2021-03-24 13:42:26,965 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 98 selfloop transitions, 314 changer transitions 4/430 dead transitions. [2021-03-24 13:42:26,965 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 430 transitions, 13058 flow [2021-03-24 13:42:26,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:26,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:26,966 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:26,966 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:26,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:26,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:26,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:26,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:26,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:26,968 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:26,968 INFO L185 Difference]: Start difference. First operand has 226 places, 397 transitions, 11453 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:26,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 430 transitions, 13058 flow [2021-03-24 13:42:27,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 430 transitions, 12486 flow, removed 69 selfloop flow, removed 4 redundant places. [2021-03-24 13:42:27,581 INFO L241 Difference]: Finished difference. Result has 234 places, 401 transitions, 11879 flow [2021-03-24 13:42:27,582 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=10931, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11879, PETRI_PLACES=234, PETRI_TRANSITIONS=401} [2021-03-24 13:42:27,582 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 190 predicate places. [2021-03-24 13:42:27,582 INFO L480 AbstractCegarLoop]: Abstraction has has 234 places, 401 transitions, 11879 flow [2021-03-24 13:42:27,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:27,582 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:27,582 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:27,583 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-24 13:42:27,583 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:27,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:27,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1108286522, now seen corresponding path program 19 times [2021-03-24 13:42:27,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:27,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966009737] [2021-03-24 13:42:27,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:27,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:27,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:27,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:27,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:27,601 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:27,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:27,609 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:42:27,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:42:27,619 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:27,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:27,634 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:27,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:27,653 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:42:27,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:42:27,678 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:27,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:27,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:27,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966009737] [2021-03-24 13:42:27,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:27,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:27,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670466384] [2021-03-24 13:42:27,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:27,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:27,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:27,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:27,702 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:27,702 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 401 transitions, 11879 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:27,702 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:27,702 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:27,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:29,005 INFO L129 PetriNetUnfolder]: 738/5496 cut-off events. [2021-03-24 13:42:29,006 INFO L130 PetriNetUnfolder]: For 170460/176348 co-relation queries the response was YES. [2021-03-24 13:42:29,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37976 conditions, 5496 events. 738/5496 cut-off events. For 170460/176348 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 81336 event pairs, 408 based on Foata normal form. 33/5244 useless extension candidates. Maximal degree in co-relation 37872. Up to 1023 conditions per place. [2021-03-24 13:42:29,061 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 230 selfloop transitions, 238 changer transitions 2/484 dead transitions. [2021-03-24 13:42:29,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 484 transitions, 15002 flow [2021-03-24 13:42:29,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:29,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:29,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:29,062 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:29,062 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:29,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:29,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:29,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:29,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:29,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:29,064 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:29,064 INFO L185 Difference]: Start difference. First operand has 234 places, 401 transitions, 11879 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:29,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 484 transitions, 15002 flow [2021-03-24 13:42:29,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 484 transitions, 14382 flow, removed 78 selfloop flow, removed 7 redundant places. [2021-03-24 13:42:29,962 INFO L241 Difference]: Finished difference. Result has 239 places, 437 transitions, 13152 flow [2021-03-24 13:42:29,962 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=11370, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13152, PETRI_PLACES=239, PETRI_TRANSITIONS=437} [2021-03-24 13:42:29,962 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 195 predicate places. [2021-03-24 13:42:29,963 INFO L480 AbstractCegarLoop]: Abstraction has has 239 places, 437 transitions, 13152 flow [2021-03-24 13:42:29,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:29,963 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:29,963 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:29,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-24 13:42:29,963 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:29,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:29,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1548443452, now seen corresponding path program 20 times [2021-03-24 13:42:29,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:29,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055987020] [2021-03-24 13:42:29,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:30,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:30,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:30,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:30,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:30,023 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:30,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:30,030 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:30,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:30,041 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:42:30,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:42:30,056 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:42:30,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:42:30,075 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:42:30,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:42:30,100 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:30,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:30,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:30,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055987020] [2021-03-24 13:42:30,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:30,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:30,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113873692] [2021-03-24 13:42:30,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:30,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:30,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:30,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:30,125 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:30,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 437 transitions, 13152 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:30,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:30,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:30,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:31,619 INFO L129 PetriNetUnfolder]: 737/5516 cut-off events. [2021-03-24 13:42:31,619 INFO L130 PetriNetUnfolder]: For 162952/168367 co-relation queries the response was YES. [2021-03-24 13:42:31,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37327 conditions, 5516 events. 737/5516 cut-off events. For 162952/168367 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 81619 event pairs, 472 based on Foata normal form. 44/5275 useless extension candidates. Maximal degree in co-relation 37222. Up to 1144 conditions per place. [2021-03-24 13:42:31,663 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 86 selfloop transitions, 360 changer transitions 1/461 dead transitions. [2021-03-24 13:42:31,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 461 transitions, 14561 flow [2021-03-24 13:42:31,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:31,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:31,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:31,665 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:31,665 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:31,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:31,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:31,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:31,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:31,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:31,666 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:31,666 INFO L185 Difference]: Start difference. First operand has 239 places, 437 transitions, 13152 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:31,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 461 transitions, 14561 flow [2021-03-24 13:42:32,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 461 transitions, 14039 flow, removed 74 selfloop flow, removed 5 redundant places. [2021-03-24 13:42:32,266 INFO L241 Difference]: Finished difference. Result has 245 places, 442 transitions, 13638 flow [2021-03-24 13:42:32,267 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=12650, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13638, PETRI_PLACES=245, PETRI_TRANSITIONS=442} [2021-03-24 13:42:32,267 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 201 predicate places. [2021-03-24 13:42:32,267 INFO L480 AbstractCegarLoop]: Abstraction has has 245 places, 442 transitions, 13638 flow [2021-03-24 13:42:32,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:32,267 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:32,267 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:32,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-24 13:42:32,267 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:32,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:32,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1788476212, now seen corresponding path program 21 times [2021-03-24 13:42:32,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:32,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326926923] [2021-03-24 13:42:32,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:32,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:32,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:32,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:32,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:32,282 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:32,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:32,289 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:32,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:32,299 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:32,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:32,312 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:42:32,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:42:32,330 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:42:32,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:42:32,352 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:32,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:32,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:32,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326926923] [2021-03-24 13:42:32,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:32,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:32,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961383397] [2021-03-24 13:42:32,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:32,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:32,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:32,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:32,374 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:32,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 442 transitions, 13638 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:32,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:32,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:32,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:33,858 INFO L129 PetriNetUnfolder]: 727/5564 cut-off events. [2021-03-24 13:42:33,858 INFO L130 PetriNetUnfolder]: For 164332/169739 co-relation queries the response was YES. [2021-03-24 13:42:33,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37778 conditions, 5564 events. 727/5564 cut-off events. For 164332/169739 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 82792 event pairs, 461 based on Foata normal form. 44/5317 useless extension candidates. Maximal degree in co-relation 37671. Up to 1144 conditions per place. [2021-03-24 13:42:33,904 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 158 selfloop transitions, 296 changer transitions 1/469 dead transitions. [2021-03-24 13:42:33,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 469 transitions, 15124 flow [2021-03-24 13:42:33,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:33,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:33,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:33,905 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:33,906 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:33,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:33,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:33,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:33,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:33,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:33,907 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:33,907 INFO L185 Difference]: Start difference. First operand has 245 places, 442 transitions, 13638 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:33,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 469 transitions, 15124 flow [2021-03-24 13:42:34,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 469 transitions, 14475 flow, removed 14 selfloop flow, removed 5 redundant places. [2021-03-24 13:42:34,556 INFO L241 Difference]: Finished difference. Result has 251 places, 446 transitions, 13767 flow [2021-03-24 13:42:34,556 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=13006, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13767, PETRI_PLACES=251, PETRI_TRANSITIONS=446} [2021-03-24 13:42:34,557 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 207 predicate places. [2021-03-24 13:42:34,557 INFO L480 AbstractCegarLoop]: Abstraction has has 251 places, 446 transitions, 13767 flow [2021-03-24 13:42:34,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:34,557 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:34,557 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:34,557 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-24 13:42:34,557 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:34,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:34,557 INFO L82 PathProgramCache]: Analyzing trace with hash -95877172, now seen corresponding path program 22 times [2021-03-24 13:42:34,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:34,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024783706] [2021-03-24 13:42:34,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:34,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:34,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:34,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:34,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:34,573 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:34,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:34,579 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:34,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:34,590 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:34,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:34,603 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:34,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:34,621 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:42:34,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:42:34,644 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:34,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:34,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:34,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024783706] [2021-03-24 13:42:34,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:34,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:34,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350649036] [2021-03-24 13:42:34,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:34,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:34,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:34,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:34,667 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:34,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 446 transitions, 13767 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:34,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:34,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:34,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:36,346 INFO L129 PetriNetUnfolder]: 715/5616 cut-off events. [2021-03-24 13:42:36,347 INFO L130 PetriNetUnfolder]: For 167395/172802 co-relation queries the response was YES. [2021-03-24 13:42:36,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38166 conditions, 5616 events. 715/5616 cut-off events. For 167395/172802 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 84073 event pairs, 452 based on Foata normal form. 44/5361 useless extension candidates. Maximal degree in co-relation 38056. Up to 1144 conditions per place. [2021-03-24 13:42:36,394 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 171 selfloop transitions, 305 changer transitions 2/492 dead transitions. [2021-03-24 13:42:36,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 492 transitions, 15913 flow [2021-03-24 13:42:36,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:36,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:36,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:36,395 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:36,395 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:36,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:36,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:36,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:36,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:36,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:36,396 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:36,396 INFO L185 Difference]: Start difference. First operand has 251 places, 446 transitions, 13767 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:36,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 492 transitions, 15913 flow [2021-03-24 13:42:37,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 492 transitions, 15301 flow, removed 21 selfloop flow, removed 5 redundant places. [2021-03-24 13:42:37,087 INFO L241 Difference]: Finished difference. Result has 258 places, 468 transitions, 14643 flow [2021-03-24 13:42:37,087 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=13178, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14643, PETRI_PLACES=258, PETRI_TRANSITIONS=468} [2021-03-24 13:42:37,088 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 214 predicate places. [2021-03-24 13:42:37,088 INFO L480 AbstractCegarLoop]: Abstraction has has 258 places, 468 transitions, 14643 flow [2021-03-24 13:42:37,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:37,088 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:37,088 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:37,088 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-24 13:42:37,088 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:37,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:37,088 INFO L82 PathProgramCache]: Analyzing trace with hash -2031332696, now seen corresponding path program 23 times [2021-03-24 13:42:37,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:37,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118878885] [2021-03-24 13:42:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:37,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:37,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:37,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:37,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:37,104 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:37,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:37,111 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:37,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:37,122 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:37,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:37,135 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:42:37,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:42:37,152 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:42:37,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:42:37,174 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:37,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:37,196 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 13:42:37,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118878885] [2021-03-24 13:42:37,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:37,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:37,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758110610] [2021-03-24 13:42:37,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:37,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:37,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:37,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:37,197 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:37,197 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 468 transitions, 14643 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:37,197 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:37,197 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:37,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:38,722 INFO L129 PetriNetUnfolder]: 713/5617 cut-off events. [2021-03-24 13:42:38,722 INFO L130 PetriNetUnfolder]: For 171898/177434 co-relation queries the response was YES. [2021-03-24 13:42:38,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38535 conditions, 5617 events. 713/5617 cut-off events. For 171898/177434 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 84073 event pairs, 461 based on Foata normal form. 48/5370 useless extension candidates. Maximal degree in co-relation 38421. Up to 1144 conditions per place. [2021-03-24 13:42:38,769 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 166 selfloop transitions, 310 changer transitions 1/491 dead transitions. [2021-03-24 13:42:38,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 491 transitions, 16111 flow [2021-03-24 13:42:38,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:38,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:38,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:38,770 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:38,770 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:38,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:38,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:38,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:38,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:38,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:38,772 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:38,772 INFO L185 Difference]: Start difference. First operand has 258 places, 468 transitions, 14643 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:38,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 491 transitions, 16111 flow [2021-03-24 13:42:39,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 491 transitions, 15489 flow, removed 85 selfloop flow, removed 4 redundant places. [2021-03-24 13:42:39,540 INFO L241 Difference]: Finished difference. Result has 265 places, 473 transitions, 14903 flow [2021-03-24 13:42:39,540 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14067, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=305, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14903, PETRI_PLACES=265, PETRI_TRANSITIONS=473} [2021-03-24 13:42:39,541 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 221 predicate places. [2021-03-24 13:42:39,541 INFO L480 AbstractCegarLoop]: Abstraction has has 265 places, 473 transitions, 14903 flow [2021-03-24 13:42:39,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:39,541 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:39,541 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:39,541 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-24 13:42:39,542 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:39,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:39,542 INFO L82 PathProgramCache]: Analyzing trace with hash -521849848, now seen corresponding path program 24 times [2021-03-24 13:42:39,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:39,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217770610] [2021-03-24 13:42:39,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:39,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:39,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:39,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:39,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:39,556 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:39,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:39,563 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:39,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:39,573 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:42:39,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:42:39,587 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:39,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:39,604 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:42:39,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:42:39,626 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:39,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:39,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:39,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217770610] [2021-03-24 13:42:39,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:39,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:39,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865116854] [2021-03-24 13:42:39,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:39,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:39,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:39,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:39,648 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:39,648 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 473 transitions, 14903 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:39,648 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:39,648 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:39,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:41,383 INFO L129 PetriNetUnfolder]: 712/5616 cut-off events. [2021-03-24 13:42:41,383 INFO L130 PetriNetUnfolder]: For 171300/176836 co-relation queries the response was YES. [2021-03-24 13:42:41,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38596 conditions, 5616 events. 712/5616 cut-off events. For 171300/176836 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 84041 event pairs, 460 based on Foata normal form. 48/5368 useless extension candidates. Maximal degree in co-relation 38479. Up to 1144 conditions per place. [2021-03-24 13:42:41,435 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 108 selfloop transitions, 367 changer transitions 2/491 dead transitions. [2021-03-24 13:42:41,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 491 transitions, 16191 flow [2021-03-24 13:42:41,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:41,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:41,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:41,436 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:41,436 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:41,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:41,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:41,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:41,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:41,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:41,438 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:41,438 INFO L185 Difference]: Start difference. First operand has 265 places, 473 transitions, 14903 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:41,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 491 transitions, 16191 flow [2021-03-24 13:42:42,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 491 transitions, 15558 flow, removed 26 selfloop flow, removed 5 redundant places. [2021-03-24 13:42:42,342 INFO L241 Difference]: Finished difference. Result has 270 places, 475 transitions, 15096 flow [2021-03-24 13:42:42,343 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14285, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=365, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15096, PETRI_PLACES=270, PETRI_TRANSITIONS=475} [2021-03-24 13:42:42,343 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 226 predicate places. [2021-03-24 13:42:42,343 INFO L480 AbstractCegarLoop]: Abstraction has has 270 places, 475 transitions, 15096 flow [2021-03-24 13:42:42,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:42,343 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:42,343 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:42,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-24 13:42:42,344 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:42,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:42,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1581125982, now seen corresponding path program 25 times [2021-03-24 13:42:42,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:42,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277858620] [2021-03-24 13:42:42,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:42,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:42,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:42,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:42,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:42,364 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:42,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:42,371 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:42,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:42,385 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:42:42,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:42:42,405 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:42:42,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:42:42,428 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:42:42,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:42:42,452 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:42,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:42,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:42,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277858620] [2021-03-24 13:42:42,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:42,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:42,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222317315] [2021-03-24 13:42:42,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:42,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:42,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:42,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:42,475 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:42,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 475 transitions, 15096 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:42,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:42,476 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:42,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:44,137 INFO L129 PetriNetUnfolder]: 712/5610 cut-off events. [2021-03-24 13:42:44,137 INFO L130 PetriNetUnfolder]: For 170989/176525 co-relation queries the response was YES. [2021-03-24 13:42:44,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38651 conditions, 5610 events. 712/5610 cut-off events. For 170989/176525 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 83907 event pairs, 460 based on Foata normal form. 48/5363 useless extension candidates. Maximal degree in co-relation 38532. Up to 1144 conditions per place. [2021-03-24 13:42:44,194 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 99 selfloop transitions, 375 changer transitions 3/491 dead transitions. [2021-03-24 13:42:44,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 491 transitions, 16333 flow [2021-03-24 13:42:44,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:44,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:44,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:44,195 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:44,195 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:44,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:44,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:44,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:44,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:44,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:44,196 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:44,196 INFO L185 Difference]: Start difference. First operand has 270 places, 475 transitions, 15096 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:44,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 491 transitions, 16333 flow [2021-03-24 13:42:45,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 491 transitions, 15597 flow, removed 7 selfloop flow, removed 7 redundant places. [2021-03-24 13:42:45,081 INFO L241 Difference]: Finished difference. Result has 273 places, 475 transitions, 15142 flow [2021-03-24 13:42:45,081 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14371, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=374, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15142, PETRI_PLACES=273, PETRI_TRANSITIONS=475} [2021-03-24 13:42:45,081 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 229 predicate places. [2021-03-24 13:42:45,081 INFO L480 AbstractCegarLoop]: Abstraction has has 273 places, 475 transitions, 15142 flow [2021-03-24 13:42:45,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:45,081 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:45,082 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:45,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-24 13:42:45,082 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:45,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:45,082 INFO L82 PathProgramCache]: Analyzing trace with hash -819022606, now seen corresponding path program 26 times [2021-03-24 13:42:45,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:45,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649812438] [2021-03-24 13:42:45,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:45,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:45,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:45,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:45,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:45,114 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:45,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:45,121 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:45,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:45,131 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:45,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:45,144 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:42:45,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:42:45,162 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:42:45,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:42:45,184 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:45,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:45,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:45,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649812438] [2021-03-24 13:42:45,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:45,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:45,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373878547] [2021-03-24 13:42:45,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:45,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:45,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:45,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:45,207 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:45,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 475 transitions, 15142 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:45,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:45,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:45,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:46,750 INFO L129 PetriNetUnfolder]: 712/5602 cut-off events. [2021-03-24 13:42:46,750 INFO L130 PetriNetUnfolder]: For 171157/176693 co-relation queries the response was YES. [2021-03-24 13:42:46,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38616 conditions, 5602 events. 712/5602 cut-off events. For 171157/176693 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 83778 event pairs, 460 based on Foata normal form. 48/5356 useless extension candidates. Maximal degree in co-relation 38496. Up to 1144 conditions per place. [2021-03-24 13:42:46,805 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 153 selfloop transitions, 319 changer transitions 1/487 dead transitions. [2021-03-24 13:42:46,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 487 transitions, 16244 flow [2021-03-24 13:42:46,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:46,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:46,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:46,806 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:46,806 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:46,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:46,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:46,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:46,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:46,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:46,807 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:46,807 INFO L185 Difference]: Start difference. First operand has 273 places, 475 transitions, 15142 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:46,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 487 transitions, 16244 flow [2021-03-24 13:42:47,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 487 transitions, 15489 flow, removed 12 selfloop flow, removed 8 redundant places. [2021-03-24 13:42:47,690 INFO L241 Difference]: Finished difference. Result has 273 places, 474 transitions, 15006 flow [2021-03-24 13:42:47,690 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14399, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=319, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15006, PETRI_PLACES=273, PETRI_TRANSITIONS=474} [2021-03-24 13:42:47,690 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 229 predicate places. [2021-03-24 13:42:47,690 INFO L480 AbstractCegarLoop]: Abstraction has has 273 places, 474 transitions, 15006 flow [2021-03-24 13:42:47,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:47,690 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:47,690 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:47,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-24 13:42:47,691 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:47,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:47,691 INFO L82 PathProgramCache]: Analyzing trace with hash -596829574, now seen corresponding path program 27 times [2021-03-24 13:42:47,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:47,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793162860] [2021-03-24 13:42:47,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:47,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:47,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:47,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:47,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:47,707 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:47,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:47,714 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:47,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:47,725 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:47,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:47,739 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:42:47,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:42:47,770 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:42:47,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:42:47,793 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:47,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:47,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793162860] [2021-03-24 13:42:47,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:47,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:47,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962801277] [2021-03-24 13:42:47,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:47,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:47,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:47,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:47,817 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:47,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 474 transitions, 15006 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:47,818 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:47,818 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:47,818 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:49,521 INFO L129 PetriNetUnfolder]: 712/5598 cut-off events. [2021-03-24 13:42:49,521 INFO L130 PetriNetUnfolder]: For 169929/175465 co-relation queries the response was YES. [2021-03-24 13:42:49,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38520 conditions, 5598 events. 712/5598 cut-off events. For 169929/175465 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 83718 event pairs, 460 based on Foata normal form. 48/5353 useless extension candidates. Maximal degree in co-relation 38402. Up to 1144 conditions per place. [2021-03-24 13:42:49,574 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 162 selfloop transitions, 314 changer transitions 1/491 dead transitions. [2021-03-24 13:42:49,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 491 transitions, 16266 flow [2021-03-24 13:42:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:49,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:49,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:49,582 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:49,582 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:49,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:49,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:49,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:49,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:49,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:49,588 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:49,588 INFO L185 Difference]: Start difference. First operand has 273 places, 474 transitions, 15006 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:49,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 491 transitions, 16266 flow [2021-03-24 13:42:50,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 491 transitions, 15599 flow, removed 12 selfloop flow, removed 7 redundant places. [2021-03-24 13:42:50,424 INFO L241 Difference]: Finished difference. Result has 277 places, 477 transitions, 15137 flow [2021-03-24 13:42:50,425 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14356, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15137, PETRI_PLACES=277, PETRI_TRANSITIONS=477} [2021-03-24 13:42:50,426 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 233 predicate places. [2021-03-24 13:42:50,426 INFO L480 AbstractCegarLoop]: Abstraction has has 277 places, 477 transitions, 15137 flow [2021-03-24 13:42:50,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:50,426 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:50,426 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:50,426 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-24 13:42:50,426 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:50,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:50,426 INFO L82 PathProgramCache]: Analyzing trace with hash -249139980, now seen corresponding path program 28 times [2021-03-24 13:42:50,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:50,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418448181] [2021-03-24 13:42:50,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:50,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:50,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:50,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:50,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:50,479 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:50,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:50,485 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:50,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:50,495 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:42:50,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:42:50,510 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:50,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:50,670 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:42:50,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:42:50,695 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:50,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:50,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:50,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418448181] [2021-03-24 13:42:50,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:50,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:50,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450419961] [2021-03-24 13:42:50,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:50,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:50,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:50,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:50,721 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:50,721 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 477 transitions, 15137 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:50,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:50,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:50,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:52,241 INFO L129 PetriNetUnfolder]: 712/5592 cut-off events. [2021-03-24 13:42:52,241 INFO L130 PetriNetUnfolder]: For 170355/175891 co-relation queries the response was YES. [2021-03-24 13:42:52,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38503 conditions, 5592 events. 712/5592 cut-off events. For 170355/175891 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 83527 event pairs, 460 based on Foata normal form. 48/5347 useless extension candidates. Maximal degree in co-relation 38383. Up to 1144 conditions per place. [2021-03-24 13:42:52,292 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 114 selfloop transitions, 367 changer transitions 2/497 dead transitions. [2021-03-24 13:42:52,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 497 transitions, 16550 flow [2021-03-24 13:42:52,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:52,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:52,293 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:52,293 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:52,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:52,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:52,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:52,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:52,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:52,294 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:52,294 INFO L185 Difference]: Start difference. First operand has 277 places, 477 transitions, 15137 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:52,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 497 transitions, 16550 flow [2021-03-24 13:42:53,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 497 transitions, 15949 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-03-24 13:42:53,053 INFO L241 Difference]: Finished difference. Result has 282 places, 480 transitions, 15486 flow [2021-03-24 13:42:53,053 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14552, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=363, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15486, PETRI_PLACES=282, PETRI_TRANSITIONS=480} [2021-03-24 13:42:53,053 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 238 predicate places. [2021-03-24 13:42:53,054 INFO L480 AbstractCegarLoop]: Abstraction has has 282 places, 480 transitions, 15486 flow [2021-03-24 13:42:53,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:53,054 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:53,054 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:53,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-24 13:42:53,054 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:53,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:53,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1046625360, now seen corresponding path program 29 times [2021-03-24 13:42:53,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:53,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722543472] [2021-03-24 13:42:53,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:53,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:53,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:53,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:53,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:53,068 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:53,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:53,075 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:53,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:53,084 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:53,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:53,097 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:42:53,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:42:53,114 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:42:53,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:42:53,136 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:53,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:53,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:53,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722543472] [2021-03-24 13:42:53,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:53,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:53,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482574582] [2021-03-24 13:42:53,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:53,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:53,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:53,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:53,158 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:53,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 480 transitions, 15486 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:53,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:53,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:53,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:54,897 INFO L129 PetriNetUnfolder]: 712/5586 cut-off events. [2021-03-24 13:42:54,897 INFO L130 PetriNetUnfolder]: For 171984/177520 co-relation queries the response was YES. [2021-03-24 13:42:54,940 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38651 conditions, 5586 events. 712/5586 cut-off events. For 171984/177520 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 83497 event pairs, 460 based on Foata normal form. 48/5342 useless extension candidates. Maximal degree in co-relation 38529. Up to 1144 conditions per place. [2021-03-24 13:42:54,956 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 168 selfloop transitions, 312 changer transitions 2/496 dead transitions. [2021-03-24 13:42:54,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 496 transitions, 16728 flow [2021-03-24 13:42:54,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:54,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:54,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:54,957 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:54,957 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:54,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:54,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:54,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:54,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:54,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:54,959 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:54,959 INFO L185 Difference]: Start difference. First operand has 282 places, 480 transitions, 15486 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:54,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 496 transitions, 16728 flow [2021-03-24 13:42:55,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 496 transitions, 16064 flow, removed 11 selfloop flow, removed 6 redundant places. [2021-03-24 13:42:55,823 INFO L241 Difference]: Finished difference. Result has 285 places, 483 transitions, 15566 flow [2021-03-24 13:42:55,823 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14837, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15566, PETRI_PLACES=285, PETRI_TRANSITIONS=483} [2021-03-24 13:42:55,824 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 241 predicate places. [2021-03-24 13:42:55,824 INFO L480 AbstractCegarLoop]: Abstraction has has 285 places, 483 transitions, 15566 flow [2021-03-24 13:42:55,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:55,824 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:55,824 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:55,824 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-24 13:42:55,824 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:55,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:55,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1985761560, now seen corresponding path program 30 times [2021-03-24 13:42:55,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:55,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100653961] [2021-03-24 13:42:55,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:55,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:55,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:55,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:55,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:55,841 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:55,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:55,848 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:55,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:55,859 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:42:55,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:42:55,874 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:42:55,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:42:55,894 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:42:55,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:42:55,918 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:55,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:55,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:55,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100653961] [2021-03-24 13:42:55,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:55,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:55,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386962699] [2021-03-24 13:42:55,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:55,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:55,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:55,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:55,942 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:55,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 483 transitions, 15566 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:55,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:55,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:55,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:57,748 INFO L129 PetriNetUnfolder]: 712/5529 cut-off events. [2021-03-24 13:42:57,748 INFO L130 PetriNetUnfolder]: For 173743/177856 co-relation queries the response was YES. [2021-03-24 13:42:57,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38645 conditions, 5529 events. 712/5529 cut-off events. For 173743/177856 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 82471 event pairs, 544 based on Foata normal form. 48/5283 useless extension candidates. Maximal degree in co-relation 38523. Up to 1144 conditions per place. [2021-03-24 13:42:57,796 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 112 selfloop transitions, 370 changer transitions 2/498 dead transitions. [2021-03-24 13:42:57,796 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 498 transitions, 16815 flow [2021-03-24 13:42:57,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:57,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:57,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:42:57,797 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:42:57,797 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:42:57,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:42:57,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:57,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:42:57,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:57,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:57,799 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:57,799 INFO L185 Difference]: Start difference. First operand has 285 places, 483 transitions, 15566 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:42:57,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 498 transitions, 16815 flow [2021-03-24 13:42:58,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 498 transitions, 16178 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-03-24 13:42:58,549 INFO L241 Difference]: Finished difference. Result has 288 places, 485 transitions, 15788 flow [2021-03-24 13:42:58,550 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14947, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15788, PETRI_PLACES=288, PETRI_TRANSITIONS=485} [2021-03-24 13:42:58,550 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 244 predicate places. [2021-03-24 13:42:58,550 INFO L480 AbstractCegarLoop]: Abstraction has has 288 places, 485 transitions, 15788 flow [2021-03-24 13:42:58,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:58,550 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:58,550 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:58,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-24 13:42:58,550 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:42:58,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:58,551 INFO L82 PathProgramCache]: Analyzing trace with hash 253707000, now seen corresponding path program 31 times [2021-03-24 13:42:58,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:58,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999625032] [2021-03-24 13:42:58,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:58,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:58,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:42:58,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:58,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:58,565 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:42:58,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:58,572 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:42:58,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:42:58,582 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:42:58,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:42:58,595 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:42:58,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:42:58,626 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:42:58,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:42:58,649 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:42:58,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:42:58,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:58,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999625032] [2021-03-24 13:42:58,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:58,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:58,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104840518] [2021-03-24 13:42:58,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:58,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:58,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:58,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:58,673 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:42:58,673 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 485 transitions, 15788 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:58,673 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:58,673 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:42:58,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:00,247 INFO L129 PetriNetUnfolder]: 712/5573 cut-off events. [2021-03-24 13:43:00,247 INFO L130 PetriNetUnfolder]: For 171909/177445 co-relation queries the response was YES. [2021-03-24 13:43:00,292 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38718 conditions, 5573 events. 712/5573 cut-off events. For 171909/177445 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 83198 event pairs, 460 based on Foata normal form. 48/5330 useless extension candidates. Maximal degree in co-relation 38595. Up to 1144 conditions per place. [2021-03-24 13:43:00,308 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 168 selfloop transitions, 314 changer transitions 2/498 dead transitions. [2021-03-24 13:43:00,308 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 498 transitions, 16938 flow [2021-03-24 13:43:00,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:43:00,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:43:00,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:43:00,309 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:43:00,309 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:43:00,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:43:00,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:00,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:43:00,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:00,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:00,311 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:00,311 INFO L185 Difference]: Start difference. First operand has 288 places, 485 transitions, 15788 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:43:00,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 498 transitions, 16938 flow [2021-03-24 13:43:01,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 498 transitions, 16191 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-03-24 13:43:01,361 INFO L241 Difference]: Finished difference. Result has 291 places, 485 transitions, 15689 flow [2021-03-24 13:43:01,361 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15055, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=313, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15689, PETRI_PLACES=291, PETRI_TRANSITIONS=485} [2021-03-24 13:43:01,361 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 247 predicate places. [2021-03-24 13:43:01,362 INFO L480 AbstractCegarLoop]: Abstraction has has 291 places, 485 transitions, 15689 flow [2021-03-24 13:43:01,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:01,362 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:01,362 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:01,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-24 13:43:01,362 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:01,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:01,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1271223456, now seen corresponding path program 32 times [2021-03-24 13:43:01,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:01,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132545064] [2021-03-24 13:43:01,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:01,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:01,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:01,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:01,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:01,378 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:01,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:01,386 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:43:01,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:43:01,396 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:01,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:01,411 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:01,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:01,430 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:43:01,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:43:01,453 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:43:01,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:43:01,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:01,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132545064] [2021-03-24 13:43:01,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:01,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:43:01,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630252453] [2021-03-24 13:43:01,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:43:01,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:01,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:43:01,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:43:01,477 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:43:01,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 485 transitions, 15689 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:01,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:01,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:43:01,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:03,134 INFO L129 PetriNetUnfolder]: 704/5611 cut-off events. [2021-03-24 13:43:03,134 INFO L130 PetriNetUnfolder]: For 172647/178183 co-relation queries the response was YES. [2021-03-24 13:43:03,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38843 conditions, 5611 events. 704/5611 cut-off events. For 172647/178183 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 84126 event pairs, 452 based on Foata normal form. 48/5362 useless extension candidates. Maximal degree in co-relation 38719. Up to 1144 conditions per place. [2021-03-24 13:43:03,194 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 188 selfloop transitions, 305 changer transitions 1/508 dead transitions. [2021-03-24 13:43:03,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 508 transitions, 17204 flow [2021-03-24 13:43:03,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:43:03,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:43:03,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:43:03,195 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:43:03,196 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:43:03,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:43:03,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:03,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:43:03,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:03,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:03,197 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:03,197 INFO L185 Difference]: Start difference. First operand has 291 places, 485 transitions, 15689 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:43:03,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 508 transitions, 17204 flow [2021-03-24 13:43:04,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 508 transitions, 16571 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 13:43:04,142 INFO L241 Difference]: Finished difference. Result has 296 places, 492 transitions, 15994 flow [2021-03-24 13:43:04,142 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15070, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=298, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15994, PETRI_PLACES=296, PETRI_TRANSITIONS=492} [2021-03-24 13:43:04,142 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 252 predicate places. [2021-03-24 13:43:04,142 INFO L480 AbstractCegarLoop]: Abstraction has has 296 places, 492 transitions, 15994 flow [2021-03-24 13:43:04,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:04,142 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:04,142 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:04,142 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-24 13:43:04,142 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:04,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:04,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1501280288, now seen corresponding path program 33 times [2021-03-24 13:43:04,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:04,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919877396] [2021-03-24 13:43:04,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:04,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:04,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:04,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:04,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:04,156 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:04,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:04,163 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:43:04,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:43:04,173 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:04,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:04,187 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:04,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:04,205 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:43:04,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:43:04,228 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:43:04,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:43:04,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:04,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919877396] [2021-03-24 13:43:04,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:04,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:43:04,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55016424] [2021-03-24 13:43:04,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:43:04,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:04,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:43:04,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:43:04,251 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:43:04,251 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 492 transitions, 15994 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:04,251 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:04,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:43:04,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:05,920 INFO L129 PetriNetUnfolder]: 704/5605 cut-off events. [2021-03-24 13:43:05,921 INFO L130 PetriNetUnfolder]: For 174730/180261 co-relation queries the response was YES. [2021-03-24 13:43:05,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38925 conditions, 5605 events. 704/5605 cut-off events. For 174730/180261 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 84027 event pairs, 452 based on Foata normal form. 46/5363 useless extension candidates. Maximal degree in co-relation 38798. Up to 1144 conditions per place. [2021-03-24 13:43:05,977 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 184 selfloop transitions, 312 changer transitions 2/512 dead transitions. [2021-03-24 13:43:05,977 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 512 transitions, 17396 flow [2021-03-24 13:43:05,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:43:05,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:43:05,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:43:05,978 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:43:05,978 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:43:05,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:43:05,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:05,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:43:05,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:05,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:05,979 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:05,979 INFO L185 Difference]: Start difference. First operand has 296 places, 492 transitions, 15994 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:43:05,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 512 transitions, 17396 flow [2021-03-24 13:43:06,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 512 transitions, 16788 flow, removed 18 selfloop flow, removed 5 redundant places. [2021-03-24 13:43:06,839 INFO L241 Difference]: Finished difference. Result has 301 places, 496 transitions, 16183 flow [2021-03-24 13:43:06,840 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15398, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16183, PETRI_PLACES=301, PETRI_TRANSITIONS=496} [2021-03-24 13:43:06,840 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 257 predicate places. [2021-03-24 13:43:06,840 INFO L480 AbstractCegarLoop]: Abstraction has has 301 places, 496 transitions, 16183 flow [2021-03-24 13:43:06,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:06,840 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:06,840 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:06,840 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-24 13:43:06,840 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:06,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:06,840 INFO L82 PathProgramCache]: Analyzing trace with hash 849153132, now seen corresponding path program 34 times [2021-03-24 13:43:06,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:06,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584123555] [2021-03-24 13:43:06,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:06,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:06,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:06,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:06,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:06,854 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:06,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:06,861 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:43:06,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:43:06,871 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:06,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:06,884 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:06,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:06,901 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:43:06,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:43:06,924 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:43:06,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:43:06,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:06,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584123555] [2021-03-24 13:43:06,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:06,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:43:06,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423629087] [2021-03-24 13:43:06,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:43:06,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:06,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:43:06,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:43:06,947 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:43:06,947 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 496 transitions, 16183 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:06,947 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:06,947 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:43:06,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:08,596 INFO L129 PetriNetUnfolder]: 704/5598 cut-off events. [2021-03-24 13:43:08,596 INFO L130 PetriNetUnfolder]: For 175491/181002 co-relation queries the response was YES. [2021-03-24 13:43:08,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38988 conditions, 5598 events. 704/5598 cut-off events. For 175491/181002 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 83838 event pairs, 452 based on Foata normal form. 46/5349 useless extension candidates. Maximal degree in co-relation 38859. Up to 1144 conditions per place. [2021-03-24 13:43:08,648 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 174 selfloop transitions, 320 changer transitions 2/510 dead transitions. [2021-03-24 13:43:08,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 510 transitions, 17401 flow [2021-03-24 13:43:08,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:43:08,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:43:08,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:43:08,649 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:43:08,649 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:43:08,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:43:08,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:08,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:43:08,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:08,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:08,650 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:08,650 INFO L185 Difference]: Start difference. First operand has 301 places, 496 transitions, 16183 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:43:08,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 510 transitions, 17401 flow [2021-03-24 13:43:09,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 510 transitions, 16799 flow, removed 11 selfloop flow, removed 8 redundant places. [2021-03-24 13:43:09,544 INFO L241 Difference]: Finished difference. Result has 301 places, 494 transitions, 16149 flow [2021-03-24 13:43:09,544 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15591, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16149, PETRI_PLACES=301, PETRI_TRANSITIONS=494} [2021-03-24 13:43:09,544 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 257 predicate places. [2021-03-24 13:43:09,544 INFO L480 AbstractCegarLoop]: Abstraction has has 301 places, 494 transitions, 16149 flow [2021-03-24 13:43:09,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:09,545 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:09,545 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:09,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-24 13:43:09,545 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:09,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:09,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1502785078, now seen corresponding path program 35 times [2021-03-24 13:43:09,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:09,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075298509] [2021-03-24 13:43:09,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:09,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:09,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:09,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:09,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:09,559 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:09,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:09,565 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:43:09,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:43:09,575 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:09,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:09,588 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:09,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:09,604 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:43:09,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:43:09,626 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:43:09,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:43:09,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:09,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075298509] [2021-03-24 13:43:09,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:09,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:43:09,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155582839] [2021-03-24 13:43:09,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:43:09,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:09,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:43:09,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:43:09,648 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:43:09,649 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 494 transitions, 16149 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:09,649 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:09,649 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:43:09,649 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:11,321 INFO L129 PetriNetUnfolder]: 704/5592 cut-off events. [2021-03-24 13:43:11,321 INFO L130 PetriNetUnfolder]: For 174901/180412 co-relation queries the response was YES. [2021-03-24 13:43:11,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39008 conditions, 5592 events. 704/5592 cut-off events. For 174901/180412 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 83705 event pairs, 452 based on Foata normal form. 46/5343 useless extension candidates. Maximal degree in co-relation 38882. Up to 1144 conditions per place. [2021-03-24 13:43:11,381 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 186 selfloop transitions, 307 changer transitions 1/508 dead transitions. [2021-03-24 13:43:11,382 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 508 transitions, 17363 flow [2021-03-24 13:43:11,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:43:11,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:43:11,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:43:11,383 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:43:11,383 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:43:11,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:43:11,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:11,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:43:11,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:11,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:11,384 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:11,384 INFO L185 Difference]: Start difference. First operand has 301 places, 494 transitions, 16149 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:43:11,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 508 transitions, 17363 flow [2021-03-24 13:43:12,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 508 transitions, 16662 flow, removed 18 selfloop flow, removed 9 redundant places. [2021-03-24 13:43:12,321 INFO L241 Difference]: Finished difference. Result has 300 places, 494 transitions, 16091 flow [2021-03-24 13:43:12,321 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15462, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16091, PETRI_PLACES=300, PETRI_TRANSITIONS=494} [2021-03-24 13:43:12,322 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 256 predicate places. [2021-03-24 13:43:12,322 INFO L480 AbstractCegarLoop]: Abstraction has has 300 places, 494 transitions, 16091 flow [2021-03-24 13:43:12,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:12,322 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:12,322 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:12,322 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-24 13:43:12,322 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:12,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:12,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1840660010, now seen corresponding path program 36 times [2021-03-24 13:43:12,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:12,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38329026] [2021-03-24 13:43:12,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:12,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:12,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:12,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:12,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:12,353 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:12,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:12,369 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:43:12,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:43:12,379 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:12,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:12,405 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:43:12,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:43:12,448 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:43:12,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:43:12,470 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:43:12,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:43:12,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:12,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38329026] [2021-03-24 13:43:12,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:12,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:43:12,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481183065] [2021-03-24 13:43:12,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:43:12,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:12,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:43:12,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:43:12,497 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:43:12,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 494 transitions, 16091 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:12,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:12,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:43:12,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:14,140 INFO L129 PetriNetUnfolder]: 704/5586 cut-off events. [2021-03-24 13:43:14,140 INFO L130 PetriNetUnfolder]: For 173568/179084 co-relation queries the response was YES. [2021-03-24 13:43:14,187 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38957 conditions, 5586 events. 704/5586 cut-off events. For 173568/179084 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 83652 event pairs, 452 based on Foata normal form. 48/5339 useless extension candidates. Maximal degree in co-relation 38833. Up to 1144 conditions per place. [2021-03-24 13:43:14,203 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 183 selfloop transitions, 309 changer transitions 1/507 dead transitions. [2021-03-24 13:43:14,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 507 transitions, 17263 flow [2021-03-24 13:43:14,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:43:14,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:43:14,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:43:14,204 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:43:14,204 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:43:14,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:43:14,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:14,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:43:14,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:14,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:14,205 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:14,205 INFO L185 Difference]: Start difference. First operand has 300 places, 494 transitions, 16091 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:43:14,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 507 transitions, 17263 flow [2021-03-24 13:43:15,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 507 transitions, 16646 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-24 13:43:15,056 INFO L241 Difference]: Finished difference. Result has 303 places, 495 transitions, 16168 flow [2021-03-24 13:43:15,057 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15484, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16168, PETRI_PLACES=303, PETRI_TRANSITIONS=495} [2021-03-24 13:43:15,057 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 259 predicate places. [2021-03-24 13:43:15,057 INFO L480 AbstractCegarLoop]: Abstraction has has 303 places, 495 transitions, 16168 flow [2021-03-24 13:43:15,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:15,057 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:15,057 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:15,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-24 13:43:15,057 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:15,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:15,058 INFO L82 PathProgramCache]: Analyzing trace with hash 353559026, now seen corresponding path program 37 times [2021-03-24 13:43:15,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:15,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277873694] [2021-03-24 13:43:15,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:15,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:15,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:15,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:15,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:15,072 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:15,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:15,078 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:43:15,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:43:15,088 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:15,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:15,102 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:43:15,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:43:15,131 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:43:15,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:43:15,154 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:43:15,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:43:15,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:15,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277873694] [2021-03-24 13:43:15,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:15,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:43:15,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669161951] [2021-03-24 13:43:15,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:43:15,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:15,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:43:15,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:43:15,178 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:43:15,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 495 transitions, 16168 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:15,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:15,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:43:15,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:16,647 INFO L129 PetriNetUnfolder]: 704/5580 cut-off events. [2021-03-24 13:43:16,647 INFO L130 PetriNetUnfolder]: For 174623/180139 co-relation queries the response was YES. [2021-03-24 13:43:16,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38968 conditions, 5580 events. 704/5580 cut-off events. For 174623/180139 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 83484 event pairs, 452 based on Foata normal form. 48/5333 useless extension candidates. Maximal degree in co-relation 38843. Up to 1144 conditions per place. [2021-03-24 13:43:16,850 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 182 selfloop transitions, 309 changer transitions 1/506 dead transitions. [2021-03-24 13:43:16,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 506 transitions, 17270 flow [2021-03-24 13:43:16,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:43:16,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:43:16,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:43:16,852 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:43:16,852 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:43:16,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:43:16,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:16,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:43:16,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:16,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:16,853 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:16,854 INFO L185 Difference]: Start difference. First operand has 303 places, 495 transitions, 16168 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:43:16,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 506 transitions, 17270 flow [2021-03-24 13:43:17,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 506 transitions, 16669 flow, removed 8 selfloop flow, removed 7 redundant places. [2021-03-24 13:43:17,689 INFO L241 Difference]: Finished difference. Result has 304 places, 494 transitions, 16153 flow [2021-03-24 13:43:17,690 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15577, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16153, PETRI_PLACES=304, PETRI_TRANSITIONS=494} [2021-03-24 13:43:17,690 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 260 predicate places. [2021-03-24 13:43:17,691 INFO L480 AbstractCegarLoop]: Abstraction has has 304 places, 494 transitions, 16153 flow [2021-03-24 13:43:17,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:17,691 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:17,691 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:17,691 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-24 13:43:17,691 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:17,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:17,691 INFO L82 PathProgramCache]: Analyzing trace with hash 678155148, now seen corresponding path program 38 times [2021-03-24 13:43:17,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:17,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095405729] [2021-03-24 13:43:17,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:17,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:17,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:17,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:17,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:17,737 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:17,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:17,743 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:43:17,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:43:17,754 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:17,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:17,767 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:43:17,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:43:17,786 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:43:17,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:43:17,808 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:43:17,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:43:17,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:17,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095405729] [2021-03-24 13:43:17,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:17,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:43:17,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237158713] [2021-03-24 13:43:17,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:43:17,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:17,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:43:17,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:43:17,832 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:43:17,832 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 494 transitions, 16153 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:17,832 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:17,832 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:43:17,832 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:19,423 INFO L129 PetriNetUnfolder]: 704/5527 cut-off events. [2021-03-24 13:43:19,423 INFO L130 PetriNetUnfolder]: For 176077/180170 co-relation queries the response was YES. [2021-03-24 13:43:19,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38967 conditions, 5527 events. 704/5527 cut-off events. For 176077/180170 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 82567 event pairs, 536 based on Foata normal form. 48/5277 useless extension candidates. Maximal degree in co-relation 38844. Up to 1144 conditions per place. [2021-03-24 13:43:19,478 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 181 selfloop transitions, 308 changer transitions 2/505 dead transitions. [2021-03-24 13:43:19,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 505 transitions, 17253 flow [2021-03-24 13:43:19,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:43:19,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:43:19,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:43:19,479 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:43:19,479 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:43:19,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:43:19,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:19,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:43:19,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:19,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:19,481 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:19,481 INFO L185 Difference]: Start difference. First operand has 304 places, 494 transitions, 16153 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:43:19,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 505 transitions, 17253 flow [2021-03-24 13:43:20,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 505 transitions, 16621 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-24 13:43:20,476 INFO L241 Difference]: Finished difference. Result has 305 places, 492 transitions, 16068 flow [2021-03-24 13:43:20,476 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15531, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16068, PETRI_PLACES=305, PETRI_TRANSITIONS=492} [2021-03-24 13:43:20,476 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 261 predicate places. [2021-03-24 13:43:20,476 INFO L480 AbstractCegarLoop]: Abstraction has has 305 places, 492 transitions, 16068 flow [2021-03-24 13:43:20,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:20,476 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:20,476 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:20,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-24 13:43:20,476 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:20,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:20,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1043792262, now seen corresponding path program 39 times [2021-03-24 13:43:20,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:20,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952641724] [2021-03-24 13:43:20,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:20,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:20,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:20,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:20,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:20,489 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:20,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:20,496 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:43:20,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:43:20,505 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:20,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:20,518 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:20,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:20,535 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:43:20,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:43:20,557 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:43:20,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:43:20,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:20,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952641724] [2021-03-24 13:43:20,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:20,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:43:20,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407564976] [2021-03-24 13:43:20,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:43:20,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:20,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:43:20,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:43:20,581 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:43:20,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 492 transitions, 16068 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:20,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:20,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:43:20,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:22,146 INFO L129 PetriNetUnfolder]: 704/5570 cut-off events. [2021-03-24 13:43:22,146 INFO L130 PetriNetUnfolder]: For 173670/179186 co-relation queries the response was YES. [2021-03-24 13:43:22,183 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38996 conditions, 5570 events. 704/5570 cut-off events. For 173670/179186 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 83373 event pairs, 452 based on Foata normal form. 48/5324 useless extension candidates. Maximal degree in co-relation 38874. Up to 1144 conditions per place. [2021-03-24 13:43:22,197 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 183 selfloop transitions, 304 changer transitions 2/503 dead transitions. [2021-03-24 13:43:22,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 503 transitions, 17164 flow [2021-03-24 13:43:22,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:43:22,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:43:22,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:43:22,199 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:43:22,199 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:43:22,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:43:22,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:22,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:43:22,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:22,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:22,200 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:22,200 INFO L185 Difference]: Start difference. First operand has 305 places, 492 transitions, 16068 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:43:22,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 503 transitions, 17164 flow [2021-03-24 13:43:23,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 503 transitions, 16541 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-24 13:43:23,036 INFO L241 Difference]: Finished difference. Result has 306 places, 490 transitions, 15982 flow [2021-03-24 13:43:23,036 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15455, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15982, PETRI_PLACES=306, PETRI_TRANSITIONS=490} [2021-03-24 13:43:23,036 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 262 predicate places. [2021-03-24 13:43:23,036 INFO L480 AbstractCegarLoop]: Abstraction has has 306 places, 490 transitions, 15982 flow [2021-03-24 13:43:23,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:23,037 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:23,037 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:23,037 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-24 13:43:23,037 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:23,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:23,037 INFO L82 PathProgramCache]: Analyzing trace with hash 188519308, now seen corresponding path program 40 times [2021-03-24 13:43:23,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:23,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800968127] [2021-03-24 13:43:23,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:23,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:23,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:23,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:23,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:23,049 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:23,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:23,055 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 13:43:23,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 13:43:23,065 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:23,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:23,078 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:23,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:23,095 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:43:23,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:43:23,118 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:43:23,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:43:23,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:23,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800968127] [2021-03-24 13:43:23,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:23,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:43:23,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164270073] [2021-03-24 13:43:23,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:43:23,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:23,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:43:23,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:43:23,141 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:43:23,141 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 490 transitions, 15982 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:23,141 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:23,141 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:43:23,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:24,676 INFO L129 PetriNetUnfolder]: 704/5563 cut-off events. [2021-03-24 13:43:24,677 INFO L130 PetriNetUnfolder]: For 173167/178683 co-relation queries the response was YES. [2021-03-24 13:43:24,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38955 conditions, 5563 events. 704/5563 cut-off events. For 173167/178683 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 83134 event pairs, 452 based on Foata normal form. 48/5318 useless extension candidates. Maximal degree in co-relation 38834. Up to 1144 conditions per place. [2021-03-24 13:43:24,736 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 162 selfloop transitions, 322 changer transitions 3/501 dead transitions. [2021-03-24 13:43:24,736 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 501 transitions, 17074 flow [2021-03-24 13:43:24,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:43:24,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:43:24,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:43:24,737 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:43:24,737 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:43:24,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:43:24,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:24,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:43:24,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:24,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:24,738 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:24,739 INFO L185 Difference]: Start difference. First operand has 306 places, 490 transitions, 15982 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:43:24,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 501 transitions, 17074 flow [2021-03-24 13:43:25,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 501 transitions, 16451 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-24 13:43:25,792 INFO L241 Difference]: Finished difference. Result has 307 places, 487 transitions, 15887 flow [2021-03-24 13:43:25,792 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15369, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15887, PETRI_PLACES=307, PETRI_TRANSITIONS=487} [2021-03-24 13:43:25,792 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 263 predicate places. [2021-03-24 13:43:25,792 INFO L480 AbstractCegarLoop]: Abstraction has has 307 places, 487 transitions, 15887 flow [2021-03-24 13:43:25,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:25,792 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:25,792 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:25,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-24 13:43:25,793 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:25,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:25,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1916461202, now seen corresponding path program 41 times [2021-03-24 13:43:25,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:25,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591720473] [2021-03-24 13:43:25,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:25,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:25,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:25,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:25,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:25,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:25,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:43:25,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:25,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 13:43:25,820 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:43:25,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:43:25,832 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 13:43:25,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:43:25,860 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:43:25,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:43:25,883 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:43:25,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:43:25,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:25,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591720473] [2021-03-24 13:43:25,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:25,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:43:25,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234856301] [2021-03-24 13:43:25,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:43:25,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:25,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:43:25,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:43:25,906 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:43:25,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 487 transitions, 15887 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:25,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:25,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:43:25,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:26,953 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2021-03-24 13:43:27,901 INFO L129 PetriNetUnfolder]: 767/7381 cut-off events. [2021-03-24 13:43:27,901 INFO L130 PetriNetUnfolder]: For 231999/237491 co-relation queries the response was YES. [2021-03-24 13:43:27,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50287 conditions, 7381 events. 767/7381 cut-off events. For 231999/237491 co-relation queries the response was YES. Maximal size of possible extension queue 1059. Compared 119726 event pairs, 204 based on Foata normal form. 13/6983 useless extension candidates. Maximal degree in co-relation 50167. Up to 1958 conditions per place. [2021-03-24 13:43:27,977 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 584 selfloop transitions, 192 changer transitions 3/793 dead transitions. [2021-03-24 13:43:27,977 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 793 transitions, 27736 flow [2021-03-24 13:43:27,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:43:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:43:27,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:43:27,978 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:43:27,978 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:43:27,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:43:27,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:27,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:43:27,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:27,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:27,979 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:27,979 INFO L185 Difference]: Start difference. First operand has 307 places, 487 transitions, 15887 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:43:27,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 793 transitions, 27736 flow [2021-03-24 13:43:29,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 793 transitions, 26683 flow, removed 11 selfloop flow, removed 7 redundant places. [2021-03-24 13:43:29,276 INFO L241 Difference]: Finished difference. Result has 314 places, 576 transitions, 18750 flow [2021-03-24 13:43:29,277 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15262, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18750, PETRI_PLACES=314, PETRI_TRANSITIONS=576} [2021-03-24 13:43:29,277 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 270 predicate places. [2021-03-24 13:43:29,277 INFO L480 AbstractCegarLoop]: Abstraction has has 314 places, 576 transitions, 18750 flow [2021-03-24 13:43:29,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:29,277 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:29,277 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:29,277 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-24 13:43:29,277 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:29,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:29,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1495848212, now seen corresponding path program 42 times [2021-03-24 13:43:29,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:29,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77346610] [2021-03-24 13:43:29,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:29,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:29,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:29,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:29,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:29,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:29,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:43:29,295 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:29,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:29,305 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:43:29,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:43:29,318 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:29,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:29,335 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:43:29,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:43:29,357 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:43:29,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:43:29,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:29,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77346610] [2021-03-24 13:43:29,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:29,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:43:29,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924271786] [2021-03-24 13:43:29,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:43:29,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:29,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:43:29,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:43:29,380 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:43:29,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 576 transitions, 18750 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:29,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:29,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:43:29,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:31,777 INFO L129 PetriNetUnfolder]: 764/7646 cut-off events. [2021-03-24 13:43:31,778 INFO L130 PetriNetUnfolder]: For 260855/269984 co-relation queries the response was YES. [2021-03-24 13:43:31,831 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53968 conditions, 7646 events. 764/7646 cut-off events. For 260855/269984 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 124382 event pairs, 410 based on Foata normal form. 30/7361 useless extension candidates. Maximal degree in co-relation 53843. Up to 1538 conditions per place. [2021-03-24 13:43:31,853 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 451 selfloop transitions, 262 changer transitions 2/729 dead transitions. [2021-03-24 13:43:31,853 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 729 transitions, 25251 flow [2021-03-24 13:43:31,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:43:31,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:43:31,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:43:31,854 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:43:31,854 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:43:31,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:43:31,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:31,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:43:31,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:31,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:31,855 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:31,856 INFO L185 Difference]: Start difference. First operand has 314 places, 576 transitions, 18750 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:43:31,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 729 transitions, 25251 flow [2021-03-24 13:43:33,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 729 transitions, 24913 flow, removed 106 selfloop flow, removed 2 redundant places. [2021-03-24 13:43:33,276 INFO L241 Difference]: Finished difference. Result has 325 places, 635 transitions, 21459 flow [2021-03-24 13:43:33,277 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=18462, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21459, PETRI_PLACES=325, PETRI_TRANSITIONS=635} [2021-03-24 13:43:33,277 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 281 predicate places. [2021-03-24 13:43:33,277 INFO L480 AbstractCegarLoop]: Abstraction has has 325 places, 635 transitions, 21459 flow [2021-03-24 13:43:33,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:33,277 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:33,277 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:33,277 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-24 13:43:33,277 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:33,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:33,278 INFO L82 PathProgramCache]: Analyzing trace with hash -217531006, now seen corresponding path program 43 times [2021-03-24 13:43:33,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:33,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737897139] [2021-03-24 13:43:33,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:33,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:33,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:33,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:33,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:33,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:33,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:43:33,296 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:33,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:33,305 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:43:33,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:43:33,327 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:43:33,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:43:33,357 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:43:33,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:43:33,379 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:43:33,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:43:33,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:33,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737897139] [2021-03-24 13:43:33,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:33,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:43:33,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506731057] [2021-03-24 13:43:33,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:43:33,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:33,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:43:33,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:43:33,403 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:43:33,403 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 635 transitions, 21459 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:33,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:33,403 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:43:33,403 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:36,119 INFO L129 PetriNetUnfolder]: 731/8678 cut-off events. [2021-03-24 13:43:36,119 INFO L130 PetriNetUnfolder]: For 306933/318099 co-relation queries the response was YES. [2021-03-24 13:43:36,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60845 conditions, 8678 events. 731/8678 cut-off events. For 306933/318099 co-relation queries the response was YES. Maximal size of possible extension queue 1300. Compared 147719 event pairs, 374 based on Foata normal form. 57/8264 useless extension candidates. Maximal degree in co-relation 60715. Up to 1720 conditions per place. [2021-03-24 13:43:36,209 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 571 selfloop transitions, 310 changer transitions 3/898 dead transitions. [2021-03-24 13:43:36,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 898 transitions, 32786 flow [2021-03-24 13:43:36,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:43:36,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:43:36,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:43:36,210 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:43:36,210 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:43:36,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:43:36,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:36,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:43:36,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:36,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:36,211 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:36,211 INFO L185 Difference]: Start difference. First operand has 325 places, 635 transitions, 21459 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:43:36,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 898 transitions, 32786 flow [2021-03-24 13:43:38,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 898 transitions, 32280 flow, removed 214 selfloop flow, removed 3 redundant places. [2021-03-24 13:43:38,417 INFO L241 Difference]: Finished difference. Result has 336 places, 726 transitions, 25636 flow [2021-03-24 13:43:38,417 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=21175, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25636, PETRI_PLACES=336, PETRI_TRANSITIONS=726} [2021-03-24 13:43:38,417 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 292 predicate places. [2021-03-24 13:43:38,417 INFO L480 AbstractCegarLoop]: Abstraction has has 336 places, 726 transitions, 25636 flow [2021-03-24 13:43:38,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:38,417 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:38,417 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:38,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-24 13:43:38,418 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:38,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:38,418 INFO L82 PathProgramCache]: Analyzing trace with hash -41679772, now seen corresponding path program 44 times [2021-03-24 13:43:38,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:38,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132604284] [2021-03-24 13:43:38,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:38,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:38,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:38,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:38,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:38,430 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:38,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:38,436 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:38,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:38,446 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:43:38,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:43:38,458 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:43:38,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:43:38,475 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:43:38,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:43:38,497 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:43:38,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:43:38,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:38,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132604284] [2021-03-24 13:43:38,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:38,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:43:38,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918524443] [2021-03-24 13:43:38,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:43:38,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:38,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:43:38,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:43:38,520 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:43:38,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 726 transitions, 25636 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:38,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:38,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:43:38,521 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:41,808 INFO L129 PetriNetUnfolder]: 687/8792 cut-off events. [2021-03-24 13:43:41,808 INFO L130 PetriNetUnfolder]: For 329734/340730 co-relation queries the response was YES. [2021-03-24 13:43:41,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63776 conditions, 8792 events. 687/8792 cut-off events. For 329734/340730 co-relation queries the response was YES. Maximal size of possible extension queue 1340. Compared 150252 event pairs, 589 based on Foata normal form. 49/8428 useless extension candidates. Maximal degree in co-relation 63641. Up to 1679 conditions per place. [2021-03-24 13:43:41,908 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 411 selfloop transitions, 418 changer transitions 1/844 dead transitions. [2021-03-24 13:43:41,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 844 transitions, 31549 flow [2021-03-24 13:43:41,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:43:41,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:43:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:43:41,910 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:43:41,910 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:43:41,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:43:41,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:41,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:43:41,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:41,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:41,911 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:41,911 INFO L185 Difference]: Start difference. First operand has 336 places, 726 transitions, 25636 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:43:41,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 844 transitions, 31549 flow [2021-03-24 13:43:44,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 844 transitions, 31006 flow, removed 173 selfloop flow, removed 4 redundant places. [2021-03-24 13:43:44,282 INFO L241 Difference]: Finished difference. Result has 345 places, 751 transitions, 27401 flow [2021-03-24 13:43:44,283 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=25187, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=393, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=27401, PETRI_PLACES=345, PETRI_TRANSITIONS=751} [2021-03-24 13:43:44,283 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 301 predicate places. [2021-03-24 13:43:44,283 INFO L480 AbstractCegarLoop]: Abstraction has has 345 places, 751 transitions, 27401 flow [2021-03-24 13:43:44,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:44,283 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:44,283 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:44,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-24 13:43:44,283 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:44,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:44,283 INFO L82 PathProgramCache]: Analyzing trace with hash -2049714668, now seen corresponding path program 45 times [2021-03-24 13:43:44,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:44,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671975242] [2021-03-24 13:43:44,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:44,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:44,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:44,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:44,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:44,296 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:44,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:44,303 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:44,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:44,312 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:43:44,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:43:44,335 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:43:44,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:43:44,362 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:43:44,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:43:44,385 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:43:44,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:43:44,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:44,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671975242] [2021-03-24 13:43:44,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:44,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:43:44,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204632752] [2021-03-24 13:43:44,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:43:44,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:44,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:43:44,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:43:44,410 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:43:44,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 751 transitions, 27401 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:44,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:44,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:43:44,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:47,703 INFO L129 PetriNetUnfolder]: 636/9207 cut-off events. [2021-03-24 13:43:47,703 INFO L130 PetriNetUnfolder]: For 353061/366332 co-relation queries the response was YES. [2021-03-24 13:43:47,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67009 conditions, 9207 events. 636/9207 cut-off events. For 353061/366332 co-relation queries the response was YES. Maximal size of possible extension queue 1422. Compared 160372 event pairs, 626 based on Foata normal form. 63/8823 useless extension candidates. Maximal degree in co-relation 66870. Up to 1590 conditions per place. [2021-03-24 13:43:47,796 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 312 selfloop transitions, 486 changer transitions 2/814 dead transitions. [2021-03-24 13:43:47,796 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 814 transitions, 31051 flow [2021-03-24 13:43:47,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:43:47,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:43:47,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:43:47,797 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:43:47,797 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:43:47,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:43:47,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:47,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:43:47,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:47,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:47,799 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:47,799 INFO L185 Difference]: Start difference. First operand has 345 places, 751 transitions, 27401 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:43:47,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 814 transitions, 31051 flow [2021-03-24 13:43:50,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 814 transitions, 30420 flow, removed 113 selfloop flow, removed 3 redundant places. [2021-03-24 13:43:50,472 INFO L241 Difference]: Finished difference. Result has 354 places, 770 transitions, 28677 flow [2021-03-24 13:43:50,472 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=26832, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=467, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=28677, PETRI_PLACES=354, PETRI_TRANSITIONS=770} [2021-03-24 13:43:50,472 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 310 predicate places. [2021-03-24 13:43:50,472 INFO L480 AbstractCegarLoop]: Abstraction has has 354 places, 770 transitions, 28677 flow [2021-03-24 13:43:50,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:50,472 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:50,473 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:50,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-24 13:43:50,473 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:50,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:50,473 INFO L82 PathProgramCache]: Analyzing trace with hash -759143782, now seen corresponding path program 46 times [2021-03-24 13:43:50,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:50,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832916537] [2021-03-24 13:43:50,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:50,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:50,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:50,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:50,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:50,486 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:50,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:50,609 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-03-24 13:43:50,610 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:50,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:50,620 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:43:50,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:43:50,648 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 13:43:50,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:43:50,682 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:43:50,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:43:50,708 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:43:50,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:43:50,733 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 13:43:50,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832916537] [2021-03-24 13:43:50,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:50,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:43:50,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524696809] [2021-03-24 13:43:50,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:43:50,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:50,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:43:50,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:43:50,734 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:43:50,734 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 770 transitions, 28677 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:50,734 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:50,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:43:50,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:54,189 INFO L129 PetriNetUnfolder]: 633/9256 cut-off events. [2021-03-24 13:43:54,189 INFO L130 PetriNetUnfolder]: For 362647/375834 co-relation queries the response was YES. [2021-03-24 13:43:54,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68005 conditions, 9256 events. 633/9256 cut-off events. For 362647/375834 co-relation queries the response was YES. Maximal size of possible extension queue 1426. Compared 161503 event pairs, 563 based on Foata normal form. 81/8867 useless extension candidates. Maximal degree in co-relation 67862. Up to 1771 conditions per place. [2021-03-24 13:43:54,276 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 390 selfloop transitions, 498 changer transitions 2/904 dead transitions. [2021-03-24 13:43:54,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 904 transitions, 35678 flow [2021-03-24 13:43:54,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:43:54,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:43:54,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:43:54,278 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:43:54,278 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:43:54,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:43:54,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:54,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:43:54,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:54,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:54,279 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:54,279 INFO L185 Difference]: Start difference. First operand has 354 places, 770 transitions, 28677 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:43:54,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 904 transitions, 35678 flow [2021-03-24 13:43:57,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 904 transitions, 34822 flow, removed 41 selfloop flow, removed 5 redundant places. [2021-03-24 13:43:57,135 INFO L241 Difference]: Finished difference. Result has 362 places, 807 transitions, 31011 flow [2021-03-24 13:43:57,136 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=27861, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=461, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=31011, PETRI_PLACES=362, PETRI_TRANSITIONS=807} [2021-03-24 13:43:57,136 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 318 predicate places. [2021-03-24 13:43:57,136 INFO L480 AbstractCegarLoop]: Abstraction has has 362 places, 807 transitions, 31011 flow [2021-03-24 13:43:57,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:57,136 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:57,136 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:57,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-24 13:43:57,136 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:43:57,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:57,137 INFO L82 PathProgramCache]: Analyzing trace with hash -2074043056, now seen corresponding path program 47 times [2021-03-24 13:43:57,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:57,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847072648] [2021-03-24 13:43:57,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:57,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:57,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:43:57,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:57,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:57,149 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:43:57,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:57,155 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:43:57,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:43:57,165 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:43:57,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:43:57,178 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:43:57,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:43:57,194 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:43:57,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:43:57,217 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:43:57,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:43:57,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:57,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847072648] [2021-03-24 13:43:57,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:57,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:43:57,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782208522] [2021-03-24 13:43:57,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:43:57,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:57,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:43:57,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:43:57,241 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:43:57,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 807 transitions, 31011 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:57,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:57,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:43:57,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:01,136 INFO L129 PetriNetUnfolder]: 581/9557 cut-off events. [2021-03-24 13:44:01,136 INFO L130 PetriNetUnfolder]: For 391062/404380 co-relation queries the response was YES. [2021-03-24 13:44:01,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71256 conditions, 9557 events. 581/9557 cut-off events. For 391062/404380 co-relation queries the response was YES. Maximal size of possible extension queue 1497. Compared 168963 event pairs, 547 based on Foata normal form. 66/9147 useless extension candidates. Maximal degree in co-relation 71109. Up to 1737 conditions per place. [2021-03-24 13:44:01,253 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 459 selfloop transitions, 445 changer transitions 2/920 dead transitions. [2021-03-24 13:44:01,254 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 920 transitions, 37132 flow [2021-03-24 13:44:01,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:44:01,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:44:01,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:44:01,254 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:44:01,255 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:44:01,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:44:01,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:01,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:44:01,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:01,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:01,268 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:01,269 INFO L185 Difference]: Start difference. First operand has 362 places, 807 transitions, 31011 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:44:01,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 920 transitions, 37132 flow [2021-03-24 13:44:04,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 920 transitions, 36443 flow, removed 142 selfloop flow, removed 3 redundant places. [2021-03-24 13:44:04,776 INFO L241 Difference]: Finished difference. Result has 371 places, 836 transitions, 32636 flow [2021-03-24 13:44:04,777 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=30352, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=807, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=416, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=32636, PETRI_PLACES=371, PETRI_TRANSITIONS=836} [2021-03-24 13:44:04,777 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 327 predicate places. [2021-03-24 13:44:04,777 INFO L480 AbstractCegarLoop]: Abstraction has has 371 places, 836 transitions, 32636 flow [2021-03-24 13:44:04,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:04,777 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:04,778 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:04,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-24 13:44:04,778 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:04,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:04,778 INFO L82 PathProgramCache]: Analyzing trace with hash 678417136, now seen corresponding path program 48 times [2021-03-24 13:44:04,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:04,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211102956] [2021-03-24 13:44:04,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:04,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:04,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:04,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:04,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:04,793 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:44:04,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:44:04,800 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:44:04,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:44:04,813 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:44:04,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:44:04,838 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:44:04,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:44:04,855 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:44:04,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:44:04,881 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:44:04,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:44:04,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:04,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211102956] [2021-03-24 13:44:04,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:04,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:44:04,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820539069] [2021-03-24 13:44:04,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:44:04,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:04,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:44:04,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:44:04,908 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:44:04,908 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 836 transitions, 32636 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:04,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:04,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:44:04,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:09,594 INFO L129 PetriNetUnfolder]: 547/9861 cut-off events. [2021-03-24 13:44:09,595 INFO L130 PetriNetUnfolder]: For 410426/423751 co-relation queries the response was YES. [2021-03-24 13:44:09,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73749 conditions, 9861 events. 547/9861 cut-off events. For 410426/423751 co-relation queries the response was YES. Maximal size of possible extension queue 1553. Compared 176043 event pairs, 547 based on Foata normal form. 66/9412 useless extension candidates. Maximal degree in co-relation 73598. Up to 1687 conditions per place. [2021-03-24 13:44:09,693 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 394 selfloop transitions, 503 changer transitions 3/914 dead transitions. [2021-03-24 13:44:09,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 914 transitions, 37156 flow [2021-03-24 13:44:09,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:44:09,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:44:09,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:44:09,694 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:44:09,694 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:44:09,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:44:09,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:09,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:44:09,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:09,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:09,695 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:09,695 INFO L185 Difference]: Start difference. First operand has 371 places, 836 transitions, 32636 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:44:09,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 914 transitions, 37156 flow [2021-03-24 13:44:13,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 914 transitions, 36625 flow, removed 61 selfloop flow, removed 4 redundant places. [2021-03-24 13:44:13,123 INFO L241 Difference]: Finished difference. Result has 379 places, 864 transitions, 34416 flow [2021-03-24 13:44:13,123 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=32123, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=836, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=475, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=34416, PETRI_PLACES=379, PETRI_TRANSITIONS=864} [2021-03-24 13:44:13,123 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 335 predicate places. [2021-03-24 13:44:13,123 INFO L480 AbstractCegarLoop]: Abstraction has has 379 places, 864 transitions, 34416 flow [2021-03-24 13:44:13,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:13,124 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:13,124 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:13,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-24 13:44:13,124 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:13,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:13,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1892064860, now seen corresponding path program 49 times [2021-03-24 13:44:13,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:13,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051798669] [2021-03-24 13:44:13,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:13,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:13,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:13,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:13,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:13,154 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:44:13,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:44:13,160 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:44:13,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:44:13,169 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:44:13,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:44:13,181 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:44:13,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:44:13,205 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:44:13,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:44:13,226 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:44:13,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:44:13,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:13,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051798669] [2021-03-24 13:44:13,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:13,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:44:13,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786779859] [2021-03-24 13:44:13,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:44:13,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:13,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:44:13,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:44:13,247 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:44:13,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 864 transitions, 34416 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:13,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:13,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:44:13,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:17,608 INFO L129 PetriNetUnfolder]: 547/9870 cut-off events. [2021-03-24 13:44:17,608 INFO L130 PetriNetUnfolder]: For 425794/439125 co-relation queries the response was YES. [2021-03-24 13:44:17,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74884 conditions, 9870 events. 547/9870 cut-off events. For 425794/439125 co-relation queries the response was YES. Maximal size of possible extension queue 1551. Compared 176352 event pairs, 523 based on Foata normal form. 84/9454 useless extension candidates. Maximal degree in co-relation 74730. Up to 1828 conditions per place. [2021-03-24 13:44:17,695 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 429 selfloop transitions, 539 changer transitions 1/983 dead transitions. [2021-03-24 13:44:17,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 983 transitions, 41062 flow [2021-03-24 13:44:17,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:44:17,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:44:17,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:44:17,696 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:44:17,696 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:44:17,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:44:17,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:17,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:44:17,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:17,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:17,698 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:17,698 INFO L185 Difference]: Start difference. First operand has 379 places, 864 transitions, 34416 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:44:17,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 983 transitions, 41062 flow [2021-03-24 13:44:21,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 983 transitions, 40567 flow, removed 40 selfloop flow, removed 5 redundant places. [2021-03-24 13:44:21,217 INFO L241 Difference]: Finished difference. Result has 386 places, 893 transitions, 36583 flow [2021-03-24 13:44:21,217 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=33935, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=864, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=510, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=36583, PETRI_PLACES=386, PETRI_TRANSITIONS=893} [2021-03-24 13:44:21,217 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 342 predicate places. [2021-03-24 13:44:21,217 INFO L480 AbstractCegarLoop]: Abstraction has has 386 places, 893 transitions, 36583 flow [2021-03-24 13:44:21,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:21,217 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:21,217 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:21,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-24 13:44:21,218 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:21,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:21,218 INFO L82 PathProgramCache]: Analyzing trace with hash 468623204, now seen corresponding path program 50 times [2021-03-24 13:44:21,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:21,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645679887] [2021-03-24 13:44:21,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:21,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:21,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:21,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:21,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:21,231 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:44:21,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:44:21,237 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:44:21,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:44:21,247 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:44:21,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:44:21,260 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:44:21,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:44:21,278 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:44:21,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:44:21,301 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:44:21,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:44:21,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:21,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645679887] [2021-03-24 13:44:21,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:21,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:44:21,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004459123] [2021-03-24 13:44:21,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:44:21,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:21,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:44:21,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:44:21,323 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:44:21,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 893 transitions, 36583 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:21,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:21,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:44:21,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:25,615 INFO L129 PetriNetUnfolder]: 547/9863 cut-off events. [2021-03-24 13:44:25,616 INFO L130 PetriNetUnfolder]: For 444311/457625 co-relation queries the response was YES. [2021-03-24 13:44:25,681 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76192 conditions, 9863 events. 547/9863 cut-off events. For 444311/457625 co-relation queries the response was YES. Maximal size of possible extension queue 1550. Compared 176154 event pairs, 523 based on Foata normal form. 84/9453 useless extension candidates. Maximal degree in co-relation 76036. Up to 1828 conditions per place. [2021-03-24 13:44:25,702 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 396 selfloop transitions, 542 changer transitions 1/953 dead transitions. [2021-03-24 13:44:25,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 953 transitions, 40695 flow [2021-03-24 13:44:25,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:44:25,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:44:25,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:44:25,703 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:44:25,703 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:44:25,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:44:25,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:25,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:44:25,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:25,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:25,705 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:25,705 INFO L185 Difference]: Start difference. First operand has 386 places, 893 transitions, 36583 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:44:25,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 953 transitions, 40695 flow [2021-03-24 13:44:29,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 953 transitions, 39791 flow, removed 55 selfloop flow, removed 4 redundant places. [2021-03-24 13:44:29,654 INFO L241 Difference]: Finished difference. Result has 392 places, 944 transitions, 39198 flow [2021-03-24 13:44:29,655 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=35695, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=893, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=490, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=39198, PETRI_PLACES=392, PETRI_TRANSITIONS=944} [2021-03-24 13:44:29,655 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 348 predicate places. [2021-03-24 13:44:29,655 INFO L480 AbstractCegarLoop]: Abstraction has has 392 places, 944 transitions, 39198 flow [2021-03-24 13:44:29,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:29,655 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:29,655 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:29,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-24 13:44:29,655 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:29,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:29,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1052512950, now seen corresponding path program 51 times [2021-03-24 13:44:29,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:29,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61808224] [2021-03-24 13:44:29,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:29,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:29,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:29,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:29,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:29,668 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:44:29,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:44:29,674 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:44:29,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:44:29,684 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:44:29,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:44:29,697 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:44:29,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:44:29,714 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:44:29,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:44:29,738 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:44:29,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:44:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:29,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61808224] [2021-03-24 13:44:29,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:29,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:44:29,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302969494] [2021-03-24 13:44:29,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:44:29,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:29,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:44:29,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:44:29,761 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:44:29,762 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 944 transitions, 39198 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:29,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:29,762 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:44:29,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:34,311 INFO L129 PetriNetUnfolder]: 547/9859 cut-off events. [2021-03-24 13:44:34,312 INFO L130 PetriNetUnfolder]: For 453472/466786 co-relation queries the response was YES. [2021-03-24 13:44:34,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76854 conditions, 9859 events. 547/9859 cut-off events. For 453472/466786 co-relation queries the response was YES. Maximal size of possible extension queue 1549. Compared 176133 event pairs, 523 based on Foata normal form. 84/9449 useless extension candidates. Maximal degree in co-relation 76696. Up to 1828 conditions per place. [2021-03-24 13:44:34,402 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 393 selfloop transitions, 543 changer transitions 2/952 dead transitions. [2021-03-24 13:44:34,402 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 952 transitions, 41197 flow [2021-03-24 13:44:34,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:44:34,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:44:34,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:44:34,403 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:44:34,403 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:44:34,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:44:34,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:34,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:44:34,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:34,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:34,404 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:34,404 INFO L185 Difference]: Start difference. First operand has 392 places, 944 transitions, 39198 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:44:34,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 952 transitions, 41197 flow [2021-03-24 13:44:38,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 952 transitions, 40301 flow, removed 51 selfloop flow, removed 4 redundant places. [2021-03-24 13:44:38,402 INFO L241 Difference]: Finished difference. Result has 396 places, 942 transitions, 39300 flow [2021-03-24 13:44:38,402 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=38312, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=543, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=39300, PETRI_PLACES=396, PETRI_TRANSITIONS=942} [2021-03-24 13:44:38,402 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 352 predicate places. [2021-03-24 13:44:38,402 INFO L480 AbstractCegarLoop]: Abstraction has has 396 places, 942 transitions, 39300 flow [2021-03-24 13:44:38,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:38,403 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:38,403 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:38,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-03-24 13:44:38,403 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:38,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:38,403 INFO L82 PathProgramCache]: Analyzing trace with hash 846540994, now seen corresponding path program 52 times [2021-03-24 13:44:38,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:38,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415432997] [2021-03-24 13:44:38,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:38,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:38,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:38,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:38,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:38,415 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:44:38,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:44:38,422 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:44:38,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:44:38,431 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:44:38,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:44:38,445 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:44:38,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:44:38,462 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:44:38,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:44:38,485 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:44:38,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:44:38,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:38,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415432997] [2021-03-24 13:44:38,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:38,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:44:38,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221899188] [2021-03-24 13:44:38,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:44:38,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:38,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:44:38,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:44:38,509 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:44:38,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 942 transitions, 39300 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:38,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:38,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:44:38,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:43,200 INFO L129 PetriNetUnfolder]: 547/9853 cut-off events. [2021-03-24 13:44:43,200 INFO L130 PetriNetUnfolder]: For 451081/464395 co-relation queries the response was YES. [2021-03-24 13:44:43,268 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77183 conditions, 9853 events. 547/9853 cut-off events. For 451081/464395 co-relation queries the response was YES. Maximal size of possible extension queue 1548. Compared 175989 event pairs, 523 based on Foata normal form. 84/9444 useless extension candidates. Maximal degree in co-relation 77025. Up to 1828 conditions per place. [2021-03-24 13:44:43,290 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 393 selfloop transitions, 542 changer transitions 1/950 dead transitions. [2021-03-24 13:44:43,290 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 950 transitions, 41295 flow [2021-03-24 13:44:43,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:44:43,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:44:43,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:44:43,291 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:44:43,291 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:44:43,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:44:43,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:43,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:44:43,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:43,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:43,292 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:43,292 INFO L185 Difference]: Start difference. First operand has 396 places, 942 transitions, 39300 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:44:43,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 950 transitions, 41295 flow [2021-03-24 13:44:47,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 950 transitions, 40202 flow, removed 56 selfloop flow, removed 5 redundant places. [2021-03-24 13:44:47,098 INFO L241 Difference]: Finished difference. Result has 399 places, 941 transitions, 39247 flow [2021-03-24 13:44:47,099 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=38217, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=542, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=39247, PETRI_PLACES=399, PETRI_TRANSITIONS=941} [2021-03-24 13:44:47,099 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 355 predicate places. [2021-03-24 13:44:47,099 INFO L480 AbstractCegarLoop]: Abstraction has has 399 places, 941 transitions, 39247 flow [2021-03-24 13:44:47,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:47,099 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:47,099 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:47,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-03-24 13:44:47,099 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:47,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:47,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1924882556, now seen corresponding path program 53 times [2021-03-24 13:44:47,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:47,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678212329] [2021-03-24 13:44:47,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:47,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:47,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:47,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:47,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:47,112 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:44:47,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:44:47,118 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:44:47,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:44:47,128 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:44:47,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:44:47,149 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 13:44:47,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:44:47,177 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:44:47,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:44:47,201 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:44:47,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:44:47,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:44:47,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678212329] [2021-03-24 13:44:47,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:47,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:44:47,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881350119] [2021-03-24 13:44:47,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:44:47,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:47,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:44:47,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:44:47,225 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:44:47,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 941 transitions, 39247 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:47,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:47,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:44:47,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:44:51,656 INFO L129 PetriNetUnfolder]: 547/9848 cut-off events. [2021-03-24 13:44:51,656 INFO L130 PetriNetUnfolder]: For 449094/462408 co-relation queries the response was YES. [2021-03-24 13:44:51,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77212 conditions, 9848 events. 547/9848 cut-off events. For 449094/462408 co-relation queries the response was YES. Maximal size of possible extension queue 1547. Compared 175824 event pairs, 523 based on Foata normal form. 84/9440 useless extension candidates. Maximal degree in co-relation 77054. Up to 1828 conditions per place. [2021-03-24 13:44:51,748 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 421 selfloop transitions, 535 changer transitions 2/972 dead transitions. [2021-03-24 13:44:51,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 972 transitions, 42414 flow [2021-03-24 13:44:51,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:44:51,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:44:51,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:44:51,749 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:44:51,749 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:44:51,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:44:51,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:44:51,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:44:51,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:51,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:51,750 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:51,750 INFO L185 Difference]: Start difference. First operand has 399 places, 941 transitions, 39247 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:44:51,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 972 transitions, 42414 flow [2021-03-24 13:44:55,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 972 transitions, 41608 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-24 13:44:55,672 INFO L241 Difference]: Finished difference. Result has 404 places, 945 transitions, 39759 flow [2021-03-24 13:44:55,673 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=38451, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=530, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=39759, PETRI_PLACES=404, PETRI_TRANSITIONS=945} [2021-03-24 13:44:55,673 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 360 predicate places. [2021-03-24 13:44:55,673 INFO L480 AbstractCegarLoop]: Abstraction has has 404 places, 945 transitions, 39759 flow [2021-03-24 13:44:55,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:55,673 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:44:55,673 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:44:55,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-03-24 13:44:55,673 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:44:55,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:44:55,673 INFO L82 PathProgramCache]: Analyzing trace with hash 935046624, now seen corresponding path program 54 times [2021-03-24 13:44:55,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:44:55,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966773001] [2021-03-24 13:44:55,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:44:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:44:55,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:55,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:44:55,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:44:55,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:44:55,686 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:44:55,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:44:55,693 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:44:55,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:44:55,702 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:44:55,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:44:55,724 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:44:55,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:44:55,742 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:44:55,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:44:55,887 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:44:55,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:44:55,910 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 13:44:55,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966773001] [2021-03-24 13:44:55,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:44:55,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:44:55,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452202630] [2021-03-24 13:44:55,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:44:55,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:44:55,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:44:55,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:44:55,911 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:44:55,912 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 945 transitions, 39759 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:44:55,912 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:44:55,912 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:44:55,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:45:00,431 INFO L129 PetriNetUnfolder]: 547/9840 cut-off events. [2021-03-24 13:45:00,431 INFO L130 PetriNetUnfolder]: For 451003/464317 co-relation queries the response was YES. [2021-03-24 13:45:00,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77746 conditions, 9840 events. 547/9840 cut-off events. For 451003/464317 co-relation queries the response was YES. Maximal size of possible extension queue 1545. Compared 175674 event pairs, 523 based on Foata normal form. 84/9432 useless extension candidates. Maximal degree in co-relation 77587. Up to 1828 conditions per place. [2021-03-24 13:45:00,526 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 417 selfloop transitions, 538 changer transitions 1/970 dead transitions. [2021-03-24 13:45:00,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 970 transitions, 42633 flow [2021-03-24 13:45:00,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:45:00,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:45:00,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:45:00,528 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:45:00,528 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:45:00,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:45:00,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:45:00,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:45:00,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:00,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:00,529 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:00,529 INFO L185 Difference]: Start difference. First operand has 404 places, 945 transitions, 39759 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:45:00,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 970 transitions, 42633 flow [2021-03-24 13:45:04,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 970 transitions, 41573 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-03-24 13:45:04,788 INFO L241 Difference]: Finished difference. Result has 407 places, 961 transitions, 40682 flow [2021-03-24 13:45:04,789 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=38709, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=945, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=521, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40682, PETRI_PLACES=407, PETRI_TRANSITIONS=961} [2021-03-24 13:45:04,789 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 363 predicate places. [2021-03-24 13:45:04,789 INFO L480 AbstractCegarLoop]: Abstraction has has 407 places, 961 transitions, 40682 flow [2021-03-24 13:45:04,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:04,789 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:45:04,789 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:45:04,789 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-03-24 13:45:04,789 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:45:04,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:45:04,790 INFO L82 PathProgramCache]: Analyzing trace with hash -69232374, now seen corresponding path program 55 times [2021-03-24 13:45:04,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:45:04,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131732363] [2021-03-24 13:45:04,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:45:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:45:04,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:04,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:45:04,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:04,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:45:04,802 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:45:04,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:45:04,809 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:45:04,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:45:04,818 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:45:04,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:45:04,832 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:45:04,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:45:04,850 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:45:04,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:45:04,873 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:45:04,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:45:04,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:45:04,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131732363] [2021-03-24 13:45:04,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:45:04,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:45:04,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537536314] [2021-03-24 13:45:04,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:45:04,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:45:04,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:45:04,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:45:04,898 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:45:04,898 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 961 transitions, 40682 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:04,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:45:04,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:45:04,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:45:09,591 INFO L129 PetriNetUnfolder]: 547/9837 cut-off events. [2021-03-24 13:45:09,591 INFO L130 PetriNetUnfolder]: For 453649/466958 co-relation queries the response was YES. [2021-03-24 13:45:09,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77810 conditions, 9837 events. 547/9837 cut-off events. For 453649/466958 co-relation queries the response was YES. Maximal size of possible extension queue 1544. Compared 175636 event pairs, 523 based on Foata normal form. 82/9427 useless extension candidates. Maximal degree in co-relation 77650. Up to 1828 conditions per place. [2021-03-24 13:45:09,712 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 393 selfloop transitions, 561 changer transitions 1/969 dead transitions. [2021-03-24 13:45:09,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 969 transitions, 42715 flow [2021-03-24 13:45:09,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:45:09,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:45:09,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:45:09,713 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:45:09,713 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:45:09,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:45:09,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:45:09,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:45:09,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:09,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:09,715 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:09,715 INFO L185 Difference]: Start difference. First operand has 407 places, 961 transitions, 40682 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:45:09,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 969 transitions, 42715 flow [2021-03-24 13:45:14,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 969 transitions, 41706 flow, removed 18 selfloop flow, removed 5 redundant places. [2021-03-24 13:45:14,445 INFO L241 Difference]: Finished difference. Result has 410 places, 960 transitions, 40753 flow [2021-03-24 13:45:14,446 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=39683, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=961, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=561, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40753, PETRI_PLACES=410, PETRI_TRANSITIONS=960} [2021-03-24 13:45:14,446 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 366 predicate places. [2021-03-24 13:45:14,446 INFO L480 AbstractCegarLoop]: Abstraction has has 410 places, 960 transitions, 40753 flow [2021-03-24 13:45:14,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:14,447 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:45:14,447 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:45:14,447 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-03-24 13:45:14,447 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:45:14,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:45:14,447 INFO L82 PathProgramCache]: Analyzing trace with hash -551361924, now seen corresponding path program 56 times [2021-03-24 13:45:14,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:45:14,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910614962] [2021-03-24 13:45:14,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:45:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:45:14,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:14,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:45:14,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:14,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:45:14,461 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:45:14,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:45:14,478 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:45:14,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:45:14,489 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:45:14,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:45:14,505 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:45:14,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:45:14,531 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:45:14,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:45:14,556 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:45:14,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:45:14,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:45:14,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910614962] [2021-03-24 13:45:14,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:45:14,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:45:14,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221050228] [2021-03-24 13:45:14,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:45:14,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:45:14,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:45:14,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:45:14,581 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:45:14,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 960 transitions, 40753 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:14,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:45:14,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:45:14,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:45:19,323 INFO L129 PetriNetUnfolder]: 547/9832 cut-off events. [2021-03-24 13:45:19,323 INFO L130 PetriNetUnfolder]: For 453463/466772 co-relation queries the response was YES. [2021-03-24 13:45:19,412 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77930 conditions, 9832 events. 547/9832 cut-off events. For 453463/466772 co-relation queries the response was YES. Maximal size of possible extension queue 1543. Compared 175499 event pairs, 523 based on Foata normal form. 82/9423 useless extension candidates. Maximal degree in co-relation 77770. Up to 1828 conditions per place. [2021-03-24 13:45:19,439 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 392 selfloop transitions, 561 changer transitions 1/968 dead transitions. [2021-03-24 13:45:19,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 968 transitions, 42784 flow [2021-03-24 13:45:19,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:45:19,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:45:19,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:45:19,441 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:45:19,441 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:45:19,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:45:19,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:45:19,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:45:19,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:19,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:19,442 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:19,442 INFO L185 Difference]: Start difference. First operand has 410 places, 960 transitions, 40753 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:45:19,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 968 transitions, 42784 flow [2021-03-24 13:45:23,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 968 transitions, 41673 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 13:45:23,728 INFO L241 Difference]: Finished difference. Result has 412 places, 959 transitions, 40717 flow [2021-03-24 13:45:23,729 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=39652, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=960, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=561, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40717, PETRI_PLACES=412, PETRI_TRANSITIONS=959} [2021-03-24 13:45:23,729 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 368 predicate places. [2021-03-24 13:45:23,729 INFO L480 AbstractCegarLoop]: Abstraction has has 412 places, 959 transitions, 40717 flow [2021-03-24 13:45:23,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:23,729 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:45:23,729 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:45:23,729 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-03-24 13:45:23,729 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:45:23,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:45:23,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1169664100, now seen corresponding path program 57 times [2021-03-24 13:45:23,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:45:23,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834514655] [2021-03-24 13:45:23,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:45:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:45:23,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:23,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:45:23,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:23,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:45:23,742 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:45:23,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:45:23,748 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:45:23,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:45:23,757 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 13:45:23,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 13:45:23,771 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:45:23,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:45:23,789 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:45:23,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:45:23,813 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:45:23,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:45:23,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:45:23,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834514655] [2021-03-24 13:45:23,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:45:23,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:45:23,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850591355] [2021-03-24 13:45:23,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:45:23,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:45:23,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:45:23,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:45:23,837 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:45:23,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 959 transitions, 40717 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:23,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:45:23,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:45:23,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:45:28,505 INFO L129 PetriNetUnfolder]: 547/9828 cut-off events. [2021-03-24 13:45:28,505 INFO L130 PetriNetUnfolder]: For 453259/466573 co-relation queries the response was YES. [2021-03-24 13:45:28,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77928 conditions, 9828 events. 547/9828 cut-off events. For 453259/466573 co-relation queries the response was YES. Maximal size of possible extension queue 1542. Compared 175420 event pairs, 523 based on Foata normal form. 84/9422 useless extension candidates. Maximal degree in co-relation 77768. Up to 1828 conditions per place. [2021-03-24 13:45:28,608 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 391 selfloop transitions, 559 changer transitions 3/967 dead transitions. [2021-03-24 13:45:28,608 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 967 transitions, 42746 flow [2021-03-24 13:45:28,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:45:28,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:45:28,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:45:28,609 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:45:28,609 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:45:28,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:45:28,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:45:28,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:45:28,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:28,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:28,610 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:28,610 INFO L185 Difference]: Start difference. First operand has 412 places, 959 transitions, 40717 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:45:28,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 967 transitions, 42746 flow [2021-03-24 13:45:32,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 967 transitions, 41947 flow, removed 33 selfloop flow, removed 5 redundant places. [2021-03-24 13:45:32,872 INFO L241 Difference]: Finished difference. Result has 415 places, 956 transitions, 40886 flow [2021-03-24 13:45:32,872 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=39928, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=959, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=559, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40886, PETRI_PLACES=415, PETRI_TRANSITIONS=956} [2021-03-24 13:45:32,872 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 371 predicate places. [2021-03-24 13:45:32,872 INFO L480 AbstractCegarLoop]: Abstraction has has 415 places, 956 transitions, 40886 flow [2021-03-24 13:45:32,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:32,873 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:45:32,873 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:45:32,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-03-24 13:45:32,873 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:45:32,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:45:32,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1059679832, now seen corresponding path program 58 times [2021-03-24 13:45:32,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:45:32,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24809102] [2021-03-24 13:45:32,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:45:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:45:32,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:32,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:45:32,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:32,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:45:32,885 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:45:32,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:45:32,891 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:45:32,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:45:32,901 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:45:32,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:45:32,914 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:45:32,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:45:32,931 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:45:32,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:45:32,955 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:45:32,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:45:32,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:45:32,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24809102] [2021-03-24 13:45:32,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:45:32,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:45:32,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153011921] [2021-03-24 13:45:32,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:45:32,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:45:32,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:45:32,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:45:32,979 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:45:32,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 956 transitions, 40886 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:32,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:45:32,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:45:32,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:45:37,629 INFO L129 PetriNetUnfolder]: 547/9811 cut-off events. [2021-03-24 13:45:37,629 INFO L130 PetriNetUnfolder]: For 453099/466413 co-relation queries the response was YES. [2021-03-24 13:45:37,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78063 conditions, 9811 events. 547/9811 cut-off events. For 453099/466413 co-relation queries the response was YES. Maximal size of possible extension queue 1540. Compared 175047 event pairs, 523 based on Foata normal form. 84/9407 useless extension candidates. Maximal degree in co-relation 77904. Up to 1828 conditions per place. [2021-03-24 13:45:37,720 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 436 selfloop transitions, 536 changer transitions 2/988 dead transitions. [2021-03-24 13:45:37,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 988 transitions, 44130 flow [2021-03-24 13:45:37,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:45:37,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:45:37,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:45:37,721 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:45:37,721 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:45:37,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:45:37,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:45:37,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:45:37,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:37,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:37,722 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:37,722 INFO L185 Difference]: Start difference. First operand has 415 places, 956 transitions, 40886 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:45:37,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 988 transitions, 44130 flow [2021-03-24 13:45:41,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 988 transitions, 43101 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 13:45:41,692 INFO L241 Difference]: Finished difference. Result has 420 places, 973 transitions, 41957 flow [2021-03-24 13:45:41,693 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=39882, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=956, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=518, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41957, PETRI_PLACES=420, PETRI_TRANSITIONS=973} [2021-03-24 13:45:41,693 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 376 predicate places. [2021-03-24 13:45:41,693 INFO L480 AbstractCegarLoop]: Abstraction has has 420 places, 973 transitions, 41957 flow [2021-03-24 13:45:41,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:41,693 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:45:41,693 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:45:41,693 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-03-24 13:45:41,693 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:45:41,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:45:41,694 INFO L82 PathProgramCache]: Analyzing trace with hash -160216324, now seen corresponding path program 59 times [2021-03-24 13:45:41,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:45:41,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443863382] [2021-03-24 13:45:41,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:45:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:45:41,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:41,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:45:41,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:41,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:45:41,704 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:45:41,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:45:41,710 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:45:41,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:45:41,719 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:45:41,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:45:41,732 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:45:41,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:45:41,749 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:45:41,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:45:41,771 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:45:41,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:45:41,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:45:41,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443863382] [2021-03-24 13:45:41,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:45:41,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:45:41,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683032577] [2021-03-24 13:45:41,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:45:41,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:45:41,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:45:41,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:45:41,795 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:45:41,795 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 973 transitions, 41957 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:41,795 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:45:41,795 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:45:41,795 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:45:46,408 INFO L129 PetriNetUnfolder]: 547/9805 cut-off events. [2021-03-24 13:45:46,409 INFO L130 PetriNetUnfolder]: For 456225/469539 co-relation queries the response was YES. [2021-03-24 13:45:46,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78228 conditions, 9805 events. 547/9805 cut-off events. For 456225/469539 co-relation queries the response was YES. Maximal size of possible extension queue 1539. Compared 174900 event pairs, 523 based on Foata normal form. 84/9402 useless extension candidates. Maximal degree in co-relation 78067. Up to 1828 conditions per place. [2021-03-24 13:45:46,498 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 436 selfloop transitions, 534 changer transitions 2/986 dead transitions. [2021-03-24 13:45:46,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 986 transitions, 44216 flow [2021-03-24 13:45:46,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:45:46,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:45:46,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:45:46,499 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:45:46,499 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:45:46,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:45:46,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:45:46,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:45:46,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:46,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:46,500 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:46,500 INFO L185 Difference]: Start difference. First operand has 420 places, 973 transitions, 41957 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:45:46,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 986 transitions, 44216 flow [2021-03-24 13:45:50,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 986 transitions, 43194 flow, removed 25 selfloop flow, removed 5 redundant places. [2021-03-24 13:45:50,661 INFO L241 Difference]: Finished difference. Result has 423 places, 971 transitions, 41904 flow [2021-03-24 13:45:50,662 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=40945, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=973, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=534, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41904, PETRI_PLACES=423, PETRI_TRANSITIONS=971} [2021-03-24 13:45:50,662 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 379 predicate places. [2021-03-24 13:45:50,662 INFO L480 AbstractCegarLoop]: Abstraction has has 423 places, 971 transitions, 41904 flow [2021-03-24 13:45:50,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:50,662 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:45:50,662 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:45:50,662 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-03-24 13:45:50,662 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:45:50,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:45:50,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1346889104, now seen corresponding path program 60 times [2021-03-24 13:45:50,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:45:50,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548994463] [2021-03-24 13:45:50,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:45:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:45:50,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:50,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:45:50,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:50,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:45:50,674 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:45:50,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:45:50,681 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:45:50,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:45:50,690 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:45:50,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:45:50,711 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:45:50,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:45:50,741 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:45:50,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:45:50,764 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:45:50,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:45:50,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:45:50,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548994463] [2021-03-24 13:45:50,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:45:50,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:45:50,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200507045] [2021-03-24 13:45:50,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:45:50,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:45:50,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:45:50,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:45:50,787 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:45:50,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 971 transitions, 41904 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:50,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:45:50,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:45:50,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:45:55,331 INFO L129 PetriNetUnfolder]: 547/9796 cut-off events. [2021-03-24 13:45:55,332 INFO L130 PetriNetUnfolder]: For 454916/468230 co-relation queries the response was YES. [2021-03-24 13:45:55,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78259 conditions, 9796 events. 547/9796 cut-off events. For 454916/468230 co-relation queries the response was YES. Maximal size of possible extension queue 1537. Compared 174698 event pairs, 523 based on Foata normal form. 84/9394 useless extension candidates. Maximal degree in co-relation 78098. Up to 1828 conditions per place. [2021-03-24 13:45:55,420 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 433 selfloop transitions, 533 changer transitions 2/982 dead transitions. [2021-03-24 13:45:55,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 982 transitions, 44060 flow [2021-03-24 13:45:55,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:45:55,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:45:55,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:45:55,421 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:45:55,421 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:45:55,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:45:55,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:45:55,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:45:55,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:55,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:55,422 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:55,422 INFO L185 Difference]: Start difference. First operand has 423 places, 971 transitions, 41904 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:45:55,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 982 transitions, 44060 flow [2021-03-24 13:45:59,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 982 transitions, 43003 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-24 13:45:59,379 INFO L241 Difference]: Finished difference. Result has 426 places, 972 transitions, 41953 flow [2021-03-24 13:45:59,380 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=40857, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=971, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=531, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41953, PETRI_PLACES=426, PETRI_TRANSITIONS=972} [2021-03-24 13:45:59,380 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 382 predicate places. [2021-03-24 13:45:59,380 INFO L480 AbstractCegarLoop]: Abstraction has has 426 places, 972 transitions, 41953 flow [2021-03-24 13:45:59,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:59,380 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:45:59,380 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:45:59,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-03-24 13:45:59,380 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:45:59,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:45:59,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1872367036, now seen corresponding path program 61 times [2021-03-24 13:45:59,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:45:59,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014041590] [2021-03-24 13:45:59,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:45:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:45:59,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:59,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:45:59,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:45:59,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:45:59,392 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:45:59,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:45:59,399 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:45:59,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:45:59,408 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:45:59,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:45:59,429 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:45:59,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:45:59,458 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:45:59,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:45:59,482 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:45:59,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:45:59,506 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 13:45:59,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014041590] [2021-03-24 13:45:59,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:45:59,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:45:59,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098033475] [2021-03-24 13:45:59,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:45:59,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:45:59,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:45:59,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:45:59,507 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:45:59,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 972 transitions, 41953 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:45:59,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:45:59,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:45:59,507 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:46:04,089 INFO L129 PetriNetUnfolder]: 547/9788 cut-off events. [2021-03-24 13:46:04,090 INFO L130 PetriNetUnfolder]: For 455464/468778 co-relation queries the response was YES. [2021-03-24 13:46:04,158 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78231 conditions, 9788 events. 547/9788 cut-off events. For 455464/468778 co-relation queries the response was YES. Maximal size of possible extension queue 1536. Compared 174538 event pairs, 523 based on Foata normal form. 84/9386 useless extension candidates. Maximal degree in co-relation 78069. Up to 1828 conditions per place. [2021-03-24 13:46:04,180 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 432 selfloop transitions, 532 changer transitions 2/980 dead transitions. [2021-03-24 13:46:04,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 980 transitions, 44008 flow [2021-03-24 13:46:04,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:46:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:46:04,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:46:04,181 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:46:04,181 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:46:04,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:46:04,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:46:04,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:46:04,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:04,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:04,183 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:04,183 INFO L185 Difference]: Start difference. First operand has 426 places, 972 transitions, 41953 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:46:04,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 980 transitions, 44008 flow [2021-03-24 13:46:08,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 980 transitions, 43006 flow, removed 14 selfloop flow, removed 5 redundant places. [2021-03-24 13:46:08,239 INFO L241 Difference]: Finished difference. Result has 429 places, 970 transitions, 41917 flow [2021-03-24 13:46:08,240 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=40961, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=972, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=532, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41917, PETRI_PLACES=429, PETRI_TRANSITIONS=970} [2021-03-24 13:46:08,240 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 385 predicate places. [2021-03-24 13:46:08,240 INFO L480 AbstractCegarLoop]: Abstraction has has 429 places, 970 transitions, 41917 flow [2021-03-24 13:46:08,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:08,241 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:46:08,241 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:46:08,241 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-03-24 13:46:08,241 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:46:08,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:46:08,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1945478112, now seen corresponding path program 62 times [2021-03-24 13:46:08,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:46:08,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844643783] [2021-03-24 13:46:08,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:46:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:46:08,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:08,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:46:08,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:08,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:46:08,254 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:46:08,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:46:08,260 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:46:08,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:46:08,270 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:46:08,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:46:08,283 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:46:08,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:46:08,310 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:46:08,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:46:08,335 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:46:08,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:46:08,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:46:08,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844643783] [2021-03-24 13:46:08,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:46:08,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:46:08,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726268749] [2021-03-24 13:46:08,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:46:08,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:46:08,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:46:08,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:46:08,358 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:46:08,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 970 transitions, 41917 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:08,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:46:08,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:46:08,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:46:12,923 INFO L129 PetriNetUnfolder]: 547/9780 cut-off events. [2021-03-24 13:46:12,923 INFO L130 PetriNetUnfolder]: For 454129/467433 co-relation queries the response was YES. [2021-03-24 13:46:12,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78296 conditions, 9780 events. 547/9780 cut-off events. For 454129/467433 co-relation queries the response was YES. Maximal size of possible extension queue 1534. Compared 174368 event pairs, 523 based on Foata normal form. 82/9376 useless extension candidates. Maximal degree in co-relation 78134. Up to 1828 conditions per place. [2021-03-24 13:46:13,023 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 437 selfloop transitions, 530 changer transitions 2/983 dead transitions. [2021-03-24 13:46:13,023 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 983 transitions, 44185 flow [2021-03-24 13:46:13,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:46:13,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:46:13,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:46:13,024 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:46:13,024 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:46:13,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:46:13,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:46:13,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:46:13,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:13,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:13,025 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:13,025 INFO L185 Difference]: Start difference. First operand has 429 places, 970 transitions, 41917 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:46:13,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 983 transitions, 44185 flow [2021-03-24 13:46:17,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 983 transitions, 43194 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 13:46:17,634 INFO L241 Difference]: Finished difference. Result has 433 places, 973 transitions, 42173 flow [2021-03-24 13:46:17,635 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=40941, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=970, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=525, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=42173, PETRI_PLACES=433, PETRI_TRANSITIONS=973} [2021-03-24 13:46:17,635 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 389 predicate places. [2021-03-24 13:46:17,635 INFO L480 AbstractCegarLoop]: Abstraction has has 433 places, 973 transitions, 42173 flow [2021-03-24 13:46:17,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:17,635 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:46:17,635 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:46:17,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-03-24 13:46:17,636 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:46:17,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:46:17,636 INFO L82 PathProgramCache]: Analyzing trace with hash 248327304, now seen corresponding path program 63 times [2021-03-24 13:46:17,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:46:17,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541088395] [2021-03-24 13:46:17,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:46:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:46:17,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:17,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:46:17,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:17,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:46:17,656 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:46:17,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:46:17,663 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:46:17,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:46:17,688 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:46:17,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:46:17,707 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:46:17,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:46:17,726 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:46:17,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:46:17,748 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:46:17,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:46:17,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:46:17,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541088395] [2021-03-24 13:46:17,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:46:17,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:46:17,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582210551] [2021-03-24 13:46:17,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:46:17,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:46:17,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:46:17,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:46:17,771 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:46:17,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 973 transitions, 42173 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:17,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:46:17,771 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:46:17,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:46:22,589 INFO L129 PetriNetUnfolder]: 547/9772 cut-off events. [2021-03-24 13:46:22,589 INFO L130 PetriNetUnfolder]: For 456880/470189 co-relation queries the response was YES. [2021-03-24 13:46:22,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78431 conditions, 9772 events. 547/9772 cut-off events. For 456880/470189 co-relation queries the response was YES. Maximal size of possible extension queue 1532. Compared 174132 event pairs, 523 based on Foata normal form. 84/9370 useless extension candidates. Maximal degree in co-relation 78268. Up to 1828 conditions per place. [2021-03-24 13:46:22,693 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 438 selfloop transitions, 530 changer transitions 2/984 dead transitions. [2021-03-24 13:46:22,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 984 transitions, 44396 flow [2021-03-24 13:46:22,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:46:22,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:46:22,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:46:22,704 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:46:22,704 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:46:22,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:46:22,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:46:22,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:46:22,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:22,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:22,705 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:22,705 INFO L185 Difference]: Start difference. First operand has 433 places, 973 transitions, 42173 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:46:22,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 984 transitions, 44396 flow [2021-03-24 13:46:26,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 984 transitions, 43412 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 13:46:27,074 INFO L241 Difference]: Finished difference. Result has 437 places, 974 transitions, 42334 flow [2021-03-24 13:46:27,075 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=41199, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=973, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=528, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=42334, PETRI_PLACES=437, PETRI_TRANSITIONS=974} [2021-03-24 13:46:27,075 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 393 predicate places. [2021-03-24 13:46:27,075 INFO L480 AbstractCegarLoop]: Abstraction has has 437 places, 974 transitions, 42334 flow [2021-03-24 13:46:27,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:27,075 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:46:27,075 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:46:27,075 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-03-24 13:46:27,075 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:46:27,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:46:27,075 INFO L82 PathProgramCache]: Analyzing trace with hash 2087458452, now seen corresponding path program 64 times [2021-03-24 13:46:27,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:46:27,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767205715] [2021-03-24 13:46:27,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:46:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:46:27,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:27,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:46:27,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:27,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:46:27,087 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:46:27,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:46:27,093 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:46:27,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:46:27,103 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:46:27,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:46:27,116 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:46:27,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:46:27,143 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:46:27,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:46:27,164 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:46:27,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:46:27,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:46:27,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767205715] [2021-03-24 13:46:27,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:46:27,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:46:27,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350388323] [2021-03-24 13:46:27,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:46:27,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:46:27,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:46:27,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:46:27,188 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:46:27,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 974 transitions, 42334 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:27,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:46:27,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:46:27,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:46:31,987 INFO L129 PetriNetUnfolder]: 547/9764 cut-off events. [2021-03-24 13:46:31,987 INFO L130 PetriNetUnfolder]: For 457001/470310 co-relation queries the response was YES. [2021-03-24 13:46:32,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78526 conditions, 9764 events. 547/9764 cut-off events. For 457001/470310 co-relation queries the response was YES. Maximal size of possible extension queue 1530. Compared 174085 event pairs, 523 based on Foata normal form. 84/9362 useless extension candidates. Maximal degree in co-relation 78362. Up to 1828 conditions per place. [2021-03-24 13:46:32,085 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 438 selfloop transitions, 528 changer transitions 2/982 dead transitions. [2021-03-24 13:46:32,086 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 982 transitions, 44393 flow [2021-03-24 13:46:32,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:46:32,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:46:32,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:46:32,087 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:46:32,087 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:46:32,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:46:32,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:46:32,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:46:32,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:32,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:32,088 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:32,088 INFO L185 Difference]: Start difference. First operand has 437 places, 974 transitions, 42334 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:46:32,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 982 transitions, 44393 flow [2021-03-24 13:46:36,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 982 transitions, 43341 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-24 13:46:36,484 INFO L241 Difference]: Finished difference. Result has 439 places, 972 transitions, 42248 flow [2021-03-24 13:46:36,485 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=41292, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=974, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=528, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=42248, PETRI_PLACES=439, PETRI_TRANSITIONS=972} [2021-03-24 13:46:36,485 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 395 predicate places. [2021-03-24 13:46:36,485 INFO L480 AbstractCegarLoop]: Abstraction has has 439 places, 972 transitions, 42248 flow [2021-03-24 13:46:36,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:36,485 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:46:36,485 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:46:36,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-03-24 13:46:36,485 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:46:36,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:46:36,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1851813480, now seen corresponding path program 65 times [2021-03-24 13:46:36,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:46:36,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119182363] [2021-03-24 13:46:36,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:46:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:46:36,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:36,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:46:36,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:36,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:46:36,497 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:46:36,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:46:36,504 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:46:36,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:46:36,513 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:46:36,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:46:36,535 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:46:36,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:46:36,553 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:46:36,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:46:36,576 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:46:36,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:46:36,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:46:36,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119182363] [2021-03-24 13:46:36,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:46:36,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:46:36,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774738502] [2021-03-24 13:46:36,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:46:36,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:46:36,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:46:36,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:46:36,600 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:46:36,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 972 transitions, 42248 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:36,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:46:36,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:46:36,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:46:41,310 INFO L129 PetriNetUnfolder]: 547/9756 cut-off events. [2021-03-24 13:46:41,310 INFO L130 PetriNetUnfolder]: For 456394/469703 co-relation queries the response was YES. [2021-03-24 13:46:41,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78480 conditions, 9756 events. 547/9756 cut-off events. For 456394/469703 co-relation queries the response was YES. Maximal size of possible extension queue 1529. Compared 173914 event pairs, 523 based on Foata normal form. 84/9354 useless extension candidates. Maximal degree in co-relation 78316. Up to 1828 conditions per place. [2021-03-24 13:46:41,410 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 425 selfloop transitions, 539 changer transitions 2/980 dead transitions. [2021-03-24 13:46:41,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 980 transitions, 44303 flow [2021-03-24 13:46:41,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:46:41,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:46:41,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:46:41,411 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:46:41,411 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:46:41,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:46:41,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:46:41,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:46:41,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:41,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:41,413 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:41,413 INFO L185 Difference]: Start difference. First operand has 439 places, 972 transitions, 42248 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:46:41,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 980 transitions, 44303 flow [2021-03-24 13:46:45,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 980 transitions, 43229 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-24 13:46:45,660 INFO L241 Difference]: Finished difference. Result has 440 places, 970 transitions, 42148 flow [2021-03-24 13:46:45,661 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=41184, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=972, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=539, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=42148, PETRI_PLACES=440, PETRI_TRANSITIONS=970} [2021-03-24 13:46:45,661 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 396 predicate places. [2021-03-24 13:46:45,661 INFO L480 AbstractCegarLoop]: Abstraction has has 440 places, 970 transitions, 42148 flow [2021-03-24 13:46:45,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:45,661 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:46:45,661 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:46:45,661 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-03-24 13:46:45,661 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:46:45,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:46:45,661 INFO L82 PathProgramCache]: Analyzing trace with hash -367275996, now seen corresponding path program 66 times [2021-03-24 13:46:45,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:46:45,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782510106] [2021-03-24 13:46:45,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:46:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:46:45,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:45,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:46:45,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:45,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:46:45,673 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:46:45,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:46:45,680 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:46:45,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:46:45,689 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:46:45,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:46:45,702 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:46:45,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:46:45,719 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:46:45,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:46:45,740 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:46:45,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:46:45,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:46:45,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782510106] [2021-03-24 13:46:45,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:46:45,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:46:45,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468689905] [2021-03-24 13:46:45,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:46:45,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:46:45,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:46:45,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:46:45,763 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:46:45,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 970 transitions, 42148 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:45,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:46:45,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:46:45,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:46:50,452 INFO L129 PetriNetUnfolder]: 523/9962 cut-off events. [2021-03-24 13:46:50,452 INFO L130 PetriNetUnfolder]: For 465010/478319 co-relation queries the response was YES. [2021-03-24 13:46:50,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79946 conditions, 9962 events. 523/9962 cut-off events. For 465010/478319 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 178767 event pairs, 523 based on Foata normal form. 66/9535 useless extension candidates. Maximal degree in co-relation 79783. Up to 1766 conditions per place. [2021-03-24 13:46:50,552 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 581 selfloop transitions, 497 changer transitions 1/1093 dead transitions. [2021-03-24 13:46:50,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 1093 transitions, 50047 flow [2021-03-24 13:46:50,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:46:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:46:50,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:46:50,553 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:46:50,553 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:46:50,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:46:50,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:46:50,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:46:50,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:50,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:50,554 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:50,554 INFO L185 Difference]: Start difference. First operand has 440 places, 970 transitions, 42148 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:46:50,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 1093 transitions, 50047 flow [2021-03-24 13:46:54,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 1093 transitions, 49112 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-03-24 13:46:55,013 INFO L241 Difference]: Finished difference. Result has 447 places, 1004 transitions, 44257 flow [2021-03-24 13:46:55,014 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=41268, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=970, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=463, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44257, PETRI_PLACES=447, PETRI_TRANSITIONS=1004} [2021-03-24 13:46:55,014 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 403 predicate places. [2021-03-24 13:46:55,015 INFO L480 AbstractCegarLoop]: Abstraction has has 447 places, 1004 transitions, 44257 flow [2021-03-24 13:46:55,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:55,015 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:46:55,015 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:46:55,015 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-03-24 13:46:55,015 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:46:55,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:46:55,015 INFO L82 PathProgramCache]: Analyzing trace with hash 953425414, now seen corresponding path program 67 times [2021-03-24 13:46:55,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:46:55,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344371800] [2021-03-24 13:46:55,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:46:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:46:55,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:55,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:46:55,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:46:55,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:46:55,027 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:46:55,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:46:55,034 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:46:55,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:46:55,044 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:46:55,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:46:55,057 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:46:55,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:46:55,074 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:46:55,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:46:55,096 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:46:55,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:46:55,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:46:55,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344371800] [2021-03-24 13:46:55,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:46:55,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:46:55,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202018353] [2021-03-24 13:46:55,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:46:55,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:46:55,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:46:55,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:46:55,119 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:46:55,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 1004 transitions, 44257 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:46:55,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:46:55,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:46:55,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:46:59,944 INFO L129 PetriNetUnfolder]: 523/9955 cut-off events. [2021-03-24 13:46:59,944 INFO L130 PetriNetUnfolder]: For 477600/490953 co-relation queries the response was YES. [2021-03-24 13:47:00,020 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80652 conditions, 9955 events. 523/9955 cut-off events. For 477600/490953 co-relation queries the response was YES. Maximal size of possible extension queue 1569. Compared 178654 event pairs, 523 based on Foata normal form. 84/9538 useless extension candidates. Maximal degree in co-relation 80485. Up to 1828 conditions per place. [2021-03-24 13:47:00,043 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 477 selfloop transitions, 544 changer transitions 1/1036 dead transitions. [2021-03-24 13:47:00,043 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 1036 transitions, 47685 flow [2021-03-24 13:47:00,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:47:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:47:00,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:47:00,044 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:47:00,044 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:47:00,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:47:00,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:47:00,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:47:00,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:00,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:00,045 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:00,045 INFO L185 Difference]: Start difference. First operand has 447 places, 1004 transitions, 44257 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:47:00,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 1036 transitions, 47685 flow [2021-03-24 13:47:04,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 1036 transitions, 46882 flow, removed 34 selfloop flow, removed 5 redundant places. [2021-03-24 13:47:04,813 INFO L241 Difference]: Finished difference. Result has 452 places, 1007 transitions, 44878 flow [2021-03-24 13:47:04,814 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=43471, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1004, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=541, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44878, PETRI_PLACES=452, PETRI_TRANSITIONS=1007} [2021-03-24 13:47:04,814 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 408 predicate places. [2021-03-24 13:47:04,814 INFO L480 AbstractCegarLoop]: Abstraction has has 452 places, 1007 transitions, 44878 flow [2021-03-24 13:47:04,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:04,814 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:47:04,814 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:47:04,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-03-24 13:47:04,814 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:47:04,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:47:04,815 INFO L82 PathProgramCache]: Analyzing trace with hash 2136229728, now seen corresponding path program 68 times [2021-03-24 13:47:04,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:47:04,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342939035] [2021-03-24 13:47:04,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:47:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:47:04,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:04,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:47:04,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:04,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:47:04,826 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:47:04,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:47:04,833 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:47:04,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:47:04,842 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:47:04,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:47:04,854 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:47:04,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:47:04,871 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:47:04,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:47:04,895 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:47:04,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:47:04,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:47:04,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342939035] [2021-03-24 13:47:04,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:47:04,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:47:04,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145551944] [2021-03-24 13:47:04,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:47:04,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:47:04,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:47:04,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:47:04,918 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:47:04,918 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 1007 transitions, 44878 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:04,918 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:47:04,918 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:47:04,918 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:47:09,877 INFO L129 PetriNetUnfolder]: 523/9948 cut-off events. [2021-03-24 13:47:09,877 INFO L130 PetriNetUnfolder]: For 485525/500979 co-relation queries the response was YES. [2021-03-24 13:47:09,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81194 conditions, 9948 events. 523/9948 cut-off events. For 485525/500979 co-relation queries the response was YES. Maximal size of possible extension queue 1568. Compared 178398 event pairs, 523 based on Foata normal form. 96/9543 useless extension candidates. Maximal degree in co-relation 81026. Up to 1828 conditions per place. [2021-03-24 13:47:09,966 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 474 selfloop transitions, 545 changer transitions 2/1035 dead transitions. [2021-03-24 13:47:09,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 1035 transitions, 48120 flow [2021-03-24 13:47:09,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:47:09,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:47:09,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:47:09,967 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:47:09,967 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:47:09,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:47:09,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:47:09,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:47:09,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:09,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:09,968 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:09,968 INFO L185 Difference]: Start difference. First operand has 452 places, 1007 transitions, 44878 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:47:09,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 1035 transitions, 48120 flow [2021-03-24 13:47:14,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 1035 transitions, 47123 flow, removed 31 selfloop flow, removed 6 redundant places. [2021-03-24 13:47:14,672 INFO L241 Difference]: Finished difference. Result has 455 places, 1010 transitions, 45183 flow [2021-03-24 13:47:14,673 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=43891, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1007, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=541, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=45183, PETRI_PLACES=455, PETRI_TRANSITIONS=1010} [2021-03-24 13:47:14,673 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 411 predicate places. [2021-03-24 13:47:14,673 INFO L480 AbstractCegarLoop]: Abstraction has has 455 places, 1010 transitions, 45183 flow [2021-03-24 13:47:14,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:14,674 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:47:14,674 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:47:14,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-03-24 13:47:14,674 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:47:14,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:47:14,674 INFO L82 PathProgramCache]: Analyzing trace with hash -558299714, now seen corresponding path program 69 times [2021-03-24 13:47:14,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:47:14,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850420679] [2021-03-24 13:47:14,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:47:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:47:14,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:14,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:47:14,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:14,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:47:14,686 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:47:14,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:47:14,693 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:47:14,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:47:14,702 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:47:14,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:47:14,715 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:47:14,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:47:14,733 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:47:14,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:47:14,755 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:47:14,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:47:14,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:47:14,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850420679] [2021-03-24 13:47:14,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:47:14,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:47:14,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108068971] [2021-03-24 13:47:14,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:47:14,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:47:14,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:47:14,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:47:14,779 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:47:14,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 1010 transitions, 45183 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:14,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:47:14,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:47:14,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:47:19,578 INFO L129 PetriNetUnfolder]: 523/9940 cut-off events. [2021-03-24 13:47:19,578 INFO L130 PetriNetUnfolder]: For 480538/495992 co-relation queries the response was YES. [2021-03-24 13:47:19,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81511 conditions, 9940 events. 523/9940 cut-off events. For 480538/495992 co-relation queries the response was YES. Maximal size of possible extension queue 1566. Compared 178285 event pairs, 523 based on Foata normal form. 96/9535 useless extension candidates. Maximal degree in co-relation 81344. Up to 1828 conditions per place. [2021-03-24 13:47:19,672 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 455 selfloop transitions, 563 changer transitions 1/1033 dead transitions. [2021-03-24 13:47:19,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1033 transitions, 48131 flow [2021-03-24 13:47:19,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:47:19,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:47:19,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:47:19,673 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:47:19,673 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:47:19,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:47:19,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:47:19,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:47:19,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:19,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:19,675 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:19,675 INFO L185 Difference]: Start difference. First operand has 455 places, 1010 transitions, 45183 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:47:19,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 1033 transitions, 48131 flow [2021-03-24 13:47:24,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 1033 transitions, 47044 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-24 13:47:24,505 INFO L241 Difference]: Finished difference. Result has 458 places, 1024 transitions, 46035 flow [2021-03-24 13:47:24,506 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=44106, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1010, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=548, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46035, PETRI_PLACES=458, PETRI_TRANSITIONS=1024} [2021-03-24 13:47:24,506 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 414 predicate places. [2021-03-24 13:47:24,506 INFO L480 AbstractCegarLoop]: Abstraction has has 458 places, 1024 transitions, 46035 flow [2021-03-24 13:47:24,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:24,506 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:47:24,506 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:47:24,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-03-24 13:47:24,506 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:47:24,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:47:24,506 INFO L82 PathProgramCache]: Analyzing trace with hash -20444136, now seen corresponding path program 70 times [2021-03-24 13:47:24,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:47:24,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246271319] [2021-03-24 13:47:24,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:47:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:47:24,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:24,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:47:24,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:24,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:47:24,518 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:47:24,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:47:24,524 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:47:24,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:47:24,533 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:47:24,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:47:24,546 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:47:24,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:47:24,564 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:47:24,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:47:24,587 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:47:24,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:47:24,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:47:24,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246271319] [2021-03-24 13:47:24,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:47:24,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:47:24,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028883850] [2021-03-24 13:47:24,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:47:24,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:47:24,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:47:24,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:47:24,611 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:47:24,611 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 1024 transitions, 46035 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:24,611 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:47:24,611 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:47:24,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:47:29,567 INFO L129 PetriNetUnfolder]: 523/9935 cut-off events. [2021-03-24 13:47:29,567 INFO L130 PetriNetUnfolder]: For 483568/499017 co-relation queries the response was YES. [2021-03-24 13:47:29,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81568 conditions, 9935 events. 523/9935 cut-off events. For 483568/499017 co-relation queries the response was YES. Maximal size of possible extension queue 1565. Compared 178163 event pairs, 523 based on Foata normal form. 94/9529 useless extension candidates. Maximal degree in co-relation 81400. Up to 1828 conditions per place. [2021-03-24 13:47:29,841 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 457 selfloop transitions, 559 changer transitions 2/1032 dead transitions. [2021-03-24 13:47:29,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 1032 transitions, 48224 flow [2021-03-24 13:47:29,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:47:29,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:47:29,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:47:29,842 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:47:29,842 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:47:29,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:47:29,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:47:29,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:47:29,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:29,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:29,843 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:29,843 INFO L185 Difference]: Start difference. First operand has 458 places, 1024 transitions, 46035 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:47:29,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 1032 transitions, 48224 flow [2021-03-24 13:47:34,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 1032 transitions, 47185 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-03-24 13:47:34,608 INFO L241 Difference]: Finished difference. Result has 462 places, 1023 transitions, 46081 flow [2021-03-24 13:47:34,609 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=45006, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1024, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=558, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46081, PETRI_PLACES=462, PETRI_TRANSITIONS=1023} [2021-03-24 13:47:34,609 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 418 predicate places. [2021-03-24 13:47:34,609 INFO L480 AbstractCegarLoop]: Abstraction has has 462 places, 1023 transitions, 46081 flow [2021-03-24 13:47:34,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:34,609 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:47:34,610 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:47:34,610 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-03-24 13:47:34,610 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:47:34,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:47:34,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1751411010, now seen corresponding path program 71 times [2021-03-24 13:47:34,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:47:34,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789988658] [2021-03-24 13:47:34,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:47:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:47:34,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:34,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:47:34,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:34,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:47:34,622 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:47:34,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:47:34,628 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:47:34,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:47:34,637 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:47:34,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:47:34,650 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 13:47:34,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:47:34,678 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:47:34,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:47:34,701 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:47:34,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:47:34,723 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 13:47:34,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789988658] [2021-03-24 13:47:34,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:47:34,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:47:34,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541630973] [2021-03-24 13:47:34,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:47:34,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:47:34,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:47:34,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:47:34,724 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:47:34,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1023 transitions, 46081 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:34,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:47:34,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:47:34,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:47:39,716 INFO L129 PetriNetUnfolder]: 523/9925 cut-off events. [2021-03-24 13:47:39,717 INFO L130 PetriNetUnfolder]: For 482174/495603 co-relation queries the response was YES. [2021-03-24 13:47:39,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81603 conditions, 9925 events. 523/9925 cut-off events. For 482174/495603 co-relation queries the response was YES. Maximal size of possible extension queue 1563. Compared 177829 event pairs, 523 based on Foata normal form. 94/9519 useless extension candidates. Maximal degree in co-relation 81434. Up to 1828 conditions per place. [2021-03-24 13:47:39,807 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 470 selfloop transitions, 544 changer transitions 2/1030 dead transitions. [2021-03-24 13:47:39,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 1030 transitions, 48221 flow [2021-03-24 13:47:39,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:47:39,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:47:39,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:47:39,808 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:47:39,808 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:47:39,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:47:39,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:47:39,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:47:39,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:39,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:39,809 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:39,809 INFO L185 Difference]: Start difference. First operand has 462 places, 1023 transitions, 46081 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:47:39,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 1030 transitions, 48221 flow [2021-03-24 13:47:44,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 1030 transitions, 47316 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-24 13:47:44,507 INFO L241 Difference]: Finished difference. Result has 466 places, 1023 transitions, 46300 flow [2021-03-24 13:47:44,508 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=45186, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1023, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=542, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46300, PETRI_PLACES=466, PETRI_TRANSITIONS=1023} [2021-03-24 13:47:44,508 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 422 predicate places. [2021-03-24 13:47:44,508 INFO L480 AbstractCegarLoop]: Abstraction has has 466 places, 1023 transitions, 46300 flow [2021-03-24 13:47:44,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:44,508 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:47:44,508 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:47:44,508 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-03-24 13:47:44,508 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:47:44,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:47:44,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1349280428, now seen corresponding path program 72 times [2021-03-24 13:47:44,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:47:44,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672462058] [2021-03-24 13:47:44,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:47:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:47:44,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:44,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:47:44,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:44,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:47:44,520 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:47:44,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:47:44,526 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:47:44,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:47:44,576 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:47:44,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:47:44,591 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 13:47:44,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:47:44,624 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:47:44,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:47:44,650 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:47:44,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:47:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:47:44,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672462058] [2021-03-24 13:47:44,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:47:44,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:47:44,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968486421] [2021-03-24 13:47:44,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:47:44,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:47:44,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:47:44,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:47:44,676 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:47:44,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 1023 transitions, 46300 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:44,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:47:44,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:47:44,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:47:49,508 INFO L129 PetriNetUnfolder]: 523/9917 cut-off events. [2021-03-24 13:47:49,508 INFO L130 PetriNetUnfolder]: For 485489/498923 co-relation queries the response was YES. [2021-03-24 13:47:49,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81985 conditions, 9917 events. 523/9917 cut-off events. For 485489/498923 co-relation queries the response was YES. Maximal size of possible extension queue 1561. Compared 177704 event pairs, 523 based on Foata normal form. 96/9513 useless extension candidates. Maximal degree in co-relation 81815. Up to 1828 conditions per place. [2021-03-24 13:47:49,608 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 472 selfloop transitions, 541 changer transitions 1/1028 dead transitions. [2021-03-24 13:47:49,608 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 1028 transitions, 48348 flow [2021-03-24 13:47:49,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:47:49,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:47:49,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:47:49,609 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:47:49,609 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:47:49,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:47:49,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:47:49,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:47:49,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:49,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:49,610 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:49,610 INFO L185 Difference]: Start difference. First operand has 466 places, 1023 transitions, 46300 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:47:49,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 1028 transitions, 48348 flow [2021-03-24 13:47:54,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 1028 transitions, 47301 flow, removed 16 selfloop flow, removed 5 redundant places. [2021-03-24 13:47:54,523 INFO L241 Difference]: Finished difference. Result has 469 places, 1022 transitions, 46275 flow [2021-03-24 13:47:54,524 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=45263, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1023, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=541, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46275, PETRI_PLACES=469, PETRI_TRANSITIONS=1022} [2021-03-24 13:47:54,524 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 425 predicate places. [2021-03-24 13:47:54,524 INFO L480 AbstractCegarLoop]: Abstraction has has 469 places, 1022 transitions, 46275 flow [2021-03-24 13:47:54,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:54,525 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:47:54,525 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:47:54,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-03-24 13:47:54,525 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:47:54,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:47:54,525 INFO L82 PathProgramCache]: Analyzing trace with hash -757023354, now seen corresponding path program 73 times [2021-03-24 13:47:54,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:47:54,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643044780] [2021-03-24 13:47:54,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:47:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:47:54,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:54,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:47:54,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:47:54,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:47:54,536 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:47:54,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:47:54,543 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:47:54,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:47:54,552 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:47:54,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:47:54,574 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:47:54,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:47:54,591 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:47:54,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:47:54,614 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:47:54,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:47:54,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:47:54,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643044780] [2021-03-24 13:47:54,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:47:54,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:47:54,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862441636] [2021-03-24 13:47:54,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:47:54,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:47:54,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:47:54,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:47:54,638 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:47:54,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 1022 transitions, 46275 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:54,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:47:54,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:47:54,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:47:59,787 INFO L129 PetriNetUnfolder]: 523/9910 cut-off events. [2021-03-24 13:47:59,788 INFO L130 PetriNetUnfolder]: For 484548/497982 co-relation queries the response was YES. [2021-03-24 13:47:59,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82054 conditions, 9910 events. 523/9910 cut-off events. For 484548/497982 co-relation queries the response was YES. Maximal size of possible extension queue 1561. Compared 177564 event pairs, 523 based on Foata normal form. 74/9484 useless extension candidates. Maximal degree in co-relation 81884. Up to 1720 conditions per place. [2021-03-24 13:47:59,883 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 497 selfloop transitions, 550 changer transitions 2/1063 dead transitions. [2021-03-24 13:47:59,883 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 1063 transitions, 49881 flow [2021-03-24 13:47:59,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:47:59,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:47:59,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:47:59,884 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:47:59,884 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:47:59,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:47:59,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:47:59,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:47:59,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:59,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:59,885 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:47:59,885 INFO L185 Difference]: Start difference. First operand has 469 places, 1022 transitions, 46275 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:47:59,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 1063 transitions, 49881 flow [2021-03-24 13:48:04,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 1063 transitions, 48765 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 13:48:04,574 INFO L241 Difference]: Finished difference. Result has 473 places, 1033 transitions, 46862 flow [2021-03-24 13:48:04,575 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=45203, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1022, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=538, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46862, PETRI_PLACES=473, PETRI_TRANSITIONS=1033} [2021-03-24 13:48:04,575 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 429 predicate places. [2021-03-24 13:48:04,575 INFO L480 AbstractCegarLoop]: Abstraction has has 473 places, 1033 transitions, 46862 flow [2021-03-24 13:48:04,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:04,575 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:48:04,575 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:48:04,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-03-24 13:48:04,575 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:48:04,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:48:04,576 INFO L82 PathProgramCache]: Analyzing trace with hash -177274904, now seen corresponding path program 74 times [2021-03-24 13:48:04,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:48:04,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851576048] [2021-03-24 13:48:04,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:48:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:48:04,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:04,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:48:04,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:04,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:48:04,587 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:48:04,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:48:04,594 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:48:04,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:48:04,603 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:48:04,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:48:04,626 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:48:04,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:48:04,644 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:48:04,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:48:04,668 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:48:04,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:48:04,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:48:04,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851576048] [2021-03-24 13:48:04,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:48:04,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:48:04,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694992613] [2021-03-24 13:48:04,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:48:04,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:48:04,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:48:04,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:48:04,693 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:48:04,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 1033 transitions, 46862 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:04,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:48:04,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:48:04,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:48:09,659 INFO L129 PetriNetUnfolder]: 523/9902 cut-off events. [2021-03-24 13:48:09,659 INFO L130 PetriNetUnfolder]: For 490794/504228 co-relation queries the response was YES. [2021-03-24 13:48:09,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82293 conditions, 9902 events. 523/9902 cut-off events. For 490794/504228 co-relation queries the response was YES. Maximal size of possible extension queue 1559. Compared 177452 event pairs, 523 based on Foata normal form. 74/9473 useless extension candidates. Maximal degree in co-relation 82121. Up to 1720 conditions per place. [2021-03-24 13:48:09,753 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 491 selfloop transitions, 549 changer transitions 1/1055 dead transitions. [2021-03-24 13:48:09,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 1055 transitions, 49657 flow [2021-03-24 13:48:09,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:48:09,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:48:09,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:48:09,754 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:48:09,754 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:48:09,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:48:09,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:48:09,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:48:09,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:09,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:09,755 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:09,756 INFO L185 Difference]: Start difference. First operand has 473 places, 1033 transitions, 46862 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:48:09,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 1055 transitions, 49657 flow [2021-03-24 13:48:14,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 1055 transitions, 48667 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-03-24 13:48:14,577 INFO L241 Difference]: Finished difference. Result has 477 places, 1034 transitions, 47059 flow [2021-03-24 13:48:14,578 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=45882, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1033, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=547, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=47059, PETRI_PLACES=477, PETRI_TRANSITIONS=1034} [2021-03-24 13:48:14,578 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 433 predicate places. [2021-03-24 13:48:14,578 INFO L480 AbstractCegarLoop]: Abstraction has has 477 places, 1034 transitions, 47059 flow [2021-03-24 13:48:14,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:14,578 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:48:14,578 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:48:14,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-03-24 13:48:14,578 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:48:14,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:48:14,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1457430648, now seen corresponding path program 75 times [2021-03-24 13:48:14,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:48:14,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596356618] [2021-03-24 13:48:14,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:48:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:48:14,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:14,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:48:14,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:14,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:48:14,590 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:48:14,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:48:14,596 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:48:14,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:48:14,605 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:48:14,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:48:14,618 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:48:14,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:48:14,635 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:48:14,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:48:14,658 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:48:14,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:48:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:48:14,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596356618] [2021-03-24 13:48:14,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:48:14,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:48:14,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497646565] [2021-03-24 13:48:14,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:48:14,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:48:14,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:48:14,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:48:14,681 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:48:14,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 1034 transitions, 47059 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:14,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:48:14,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:48:14,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:48:19,891 INFO L129 PetriNetUnfolder]: 523/9898 cut-off events. [2021-03-24 13:48:19,891 INFO L130 PetriNetUnfolder]: For 491369/504803 co-relation queries the response was YES. [2021-03-24 13:48:19,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82457 conditions, 9898 events. 523/9898 cut-off events. For 491369/504803 co-relation queries the response was YES. Maximal size of possible extension queue 1558. Compared 177357 event pairs, 523 based on Foata normal form. 74/9470 useless extension candidates. Maximal degree in co-relation 82284. Up to 1720 conditions per place. [2021-03-24 13:48:19,984 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 521 selfloop transitions, 543 changer transitions 1/1079 dead transitions. [2021-03-24 13:48:19,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 1079 transitions, 51016 flow [2021-03-24 13:48:19,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:48:19,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:48:19,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:48:19,985 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:48:19,985 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:48:19,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:48:19,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:48:19,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:48:19,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:19,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:19,986 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:19,986 INFO L185 Difference]: Start difference. First operand has 477 places, 1034 transitions, 47059 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:48:19,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 1079 transitions, 51016 flow [2021-03-24 13:48:24,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 1079 transitions, 50041 flow, removed 57 selfloop flow, removed 5 redundant places. [2021-03-24 13:48:24,872 INFO L241 Difference]: Finished difference. Result has 482 places, 1063 transitions, 48741 flow [2021-03-24 13:48:24,873 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=46114, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1034, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=513, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48741, PETRI_PLACES=482, PETRI_TRANSITIONS=1063} [2021-03-24 13:48:24,873 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 438 predicate places. [2021-03-24 13:48:24,873 INFO L480 AbstractCegarLoop]: Abstraction has has 482 places, 1063 transitions, 48741 flow [2021-03-24 13:48:24,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:24,873 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:48:24,873 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:48:24,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-03-24 13:48:24,873 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:48:24,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:48:24,874 INFO L82 PathProgramCache]: Analyzing trace with hash 850628048, now seen corresponding path program 76 times [2021-03-24 13:48:24,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:48:24,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265917728] [2021-03-24 13:48:24,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:48:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:48:24,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:24,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:48:24,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:24,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:48:24,885 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:48:24,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:48:24,891 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:48:24,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:48:24,900 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:48:24,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:48:24,913 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:48:24,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:48:24,930 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:48:24,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:48:24,953 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:48:24,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:48:24,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:48:24,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265917728] [2021-03-24 13:48:24,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:48:24,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:48:24,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771120624] [2021-03-24 13:48:24,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:48:24,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:48:24,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:48:24,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:48:24,977 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:48:24,977 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 1063 transitions, 48741 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:24,977 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:48:24,977 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:48:24,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:48:29,965 INFO L129 PetriNetUnfolder]: 523/9892 cut-off events. [2021-03-24 13:48:29,965 INFO L130 PetriNetUnfolder]: For 501848/515282 co-relation queries the response was YES. [2021-03-24 13:48:30,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83333 conditions, 9892 events. 523/9892 cut-off events. For 501848/515282 co-relation queries the response was YES. Maximal size of possible extension queue 1557. Compared 177254 event pairs, 523 based on Foata normal form. 74/9486 useless extension candidates. Maximal degree in co-relation 83159. Up to 1720 conditions per place. [2021-03-24 13:48:30,067 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 520 selfloop transitions, 541 changer transitions 3/1078 dead transitions. [2021-03-24 13:48:30,067 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 1078 transitions, 51400 flow [2021-03-24 13:48:30,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:48:30,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:48:30,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:48:30,068 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:48:30,068 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:48:30,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:48:30,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:48:30,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:48:30,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:30,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:30,069 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:30,069 INFO L185 Difference]: Start difference. First operand has 482 places, 1063 transitions, 48741 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:48:30,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 1078 transitions, 51400 flow [2021-03-24 13:48:35,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 1078 transitions, 50528 flow, removed 44 selfloop flow, removed 5 redundant places. [2021-03-24 13:48:35,468 INFO L241 Difference]: Finished difference. Result has 486 places, 1064 transitions, 49079 flow [2021-03-24 13:48:35,468 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=47879, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1063, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=538, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49079, PETRI_PLACES=486, PETRI_TRANSITIONS=1064} [2021-03-24 13:48:35,468 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 442 predicate places. [2021-03-24 13:48:35,468 INFO L480 AbstractCegarLoop]: Abstraction has has 486 places, 1064 transitions, 49079 flow [2021-03-24 13:48:35,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:35,469 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:48:35,469 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:48:35,469 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-03-24 13:48:35,469 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:48:35,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:48:35,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1514833396, now seen corresponding path program 77 times [2021-03-24 13:48:35,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:48:35,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352441621] [2021-03-24 13:48:35,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:48:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:48:35,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:35,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:48:35,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:35,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:48:35,480 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:48:35,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:48:35,487 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:48:35,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:48:35,496 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:48:35,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:48:35,518 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:48:35,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:48:35,547 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:48:35,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:48:35,572 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:48:35,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:48:35,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:48:35,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352441621] [2021-03-24 13:48:35,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:48:35,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:48:35,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54812038] [2021-03-24 13:48:35,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:48:35,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:48:35,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:48:35,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:48:35,597 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:48:35,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 1064 transitions, 49079 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:35,597 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:48:35,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:48:35,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:48:40,885 INFO L129 PetriNetUnfolder]: 523/9882 cut-off events. [2021-03-24 13:48:40,886 INFO L130 PetriNetUnfolder]: For 501420/514840 co-relation queries the response was YES. [2021-03-24 13:48:40,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83732 conditions, 9882 events. 523/9882 cut-off events. For 501420/514840 co-relation queries the response was YES. Maximal size of possible extension queue 1555. Compared 176998 event pairs, 523 based on Foata normal form. 74/9476 useless extension candidates. Maximal degree in co-relation 83558. Up to 1720 conditions per place. [2021-03-24 13:48:40,978 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 519 selfloop transitions, 540 changer transitions 2/1075 dead transitions. [2021-03-24 13:48:40,978 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 1075 transitions, 51511 flow [2021-03-24 13:48:40,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:48:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:48:40,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:48:40,979 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:48:40,979 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:48:40,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:48:40,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:48:40,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:48:40,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:40,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:40,980 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:40,980 INFO L185 Difference]: Start difference. First operand has 486 places, 1064 transitions, 49079 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:48:40,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 1075 transitions, 51511 flow [2021-03-24 13:48:46,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 1075 transitions, 50449 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-24 13:48:46,201 INFO L241 Difference]: Finished difference. Result has 488 places, 1062 transitions, 49006 flow [2021-03-24 13:48:46,202 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48027, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1064, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=540, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49006, PETRI_PLACES=488, PETRI_TRANSITIONS=1062} [2021-03-24 13:48:46,202 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 444 predicate places. [2021-03-24 13:48:46,202 INFO L480 AbstractCegarLoop]: Abstraction has has 488 places, 1062 transitions, 49006 flow [2021-03-24 13:48:46,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:46,202 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:48:46,202 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:48:46,202 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-03-24 13:48:46,202 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:48:46,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:48:46,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1025901608, now seen corresponding path program 78 times [2021-03-24 13:48:46,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:48:46,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857513202] [2021-03-24 13:48:46,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:48:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:48:46,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:46,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:48:46,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:46,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:48:46,214 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:48:46,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:48:46,221 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:48:46,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:48:46,231 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:48:46,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:48:46,253 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:48:46,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:48:46,271 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:48:46,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:48:46,294 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:48:46,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:48:46,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:48:46,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857513202] [2021-03-24 13:48:46,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:48:46,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:48:46,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175504553] [2021-03-24 13:48:46,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:48:46,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:48:46,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:48:46,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:48:46,317 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:48:46,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 1062 transitions, 49006 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:46,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:48:46,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:48:46,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:48:51,524 INFO L129 PetriNetUnfolder]: 523/9873 cut-off events. [2021-03-24 13:48:51,524 INFO L130 PetriNetUnfolder]: For 500726/514146 co-relation queries the response was YES. [2021-03-24 13:48:51,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83678 conditions, 9873 events. 523/9873 cut-off events. For 500726/514146 co-relation queries the response was YES. Maximal size of possible extension queue 1553. Compared 176715 event pairs, 523 based on Foata normal form. 74/9468 useless extension candidates. Maximal degree in co-relation 83504. Up to 1720 conditions per place. [2021-03-24 13:48:51,632 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 511 selfloop transitions, 546 changer transitions 2/1073 dead transitions. [2021-03-24 13:48:51,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 1073 transitions, 51434 flow [2021-03-24 13:48:51,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:48:51,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:48:51,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:48:51,633 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:48:51,634 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:48:51,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:48:51,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:48:51,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:48:51,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:51,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:51,635 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:51,635 INFO L185 Difference]: Start difference. First operand has 488 places, 1062 transitions, 49006 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:48:51,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 1073 transitions, 51434 flow [2021-03-24 13:48:57,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 1073 transitions, 50366 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-24 13:48:57,091 INFO L241 Difference]: Finished difference. Result has 491 places, 1062 transitions, 49058 flow [2021-03-24 13:48:57,092 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=47948, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1062, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=544, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49058, PETRI_PLACES=491, PETRI_TRANSITIONS=1062} [2021-03-24 13:48:57,092 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 447 predicate places. [2021-03-24 13:48:57,092 INFO L480 AbstractCegarLoop]: Abstraction has has 491 places, 1062 transitions, 49058 flow [2021-03-24 13:48:57,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:57,092 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:48:57,092 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:48:57,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-03-24 13:48:57,092 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:48:57,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:48:57,093 INFO L82 PathProgramCache]: Analyzing trace with hash 481848238, now seen corresponding path program 79 times [2021-03-24 13:48:57,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:48:57,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192037436] [2021-03-24 13:48:57,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:48:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:48:57,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:57,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:48:57,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:48:57,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:48:57,104 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:48:57,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:48:57,110 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:48:57,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:48:57,120 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:48:57,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:48:57,133 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:48:57,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:48:57,150 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:48:57,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:48:57,172 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:48:57,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:48:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:48:57,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192037436] [2021-03-24 13:48:57,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:48:57,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:48:57,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825161236] [2021-03-24 13:48:57,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:48:57,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:48:57,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:48:57,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:48:57,196 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:48:57,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 1062 transitions, 49058 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:48:57,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:48:57,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:48:57,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:49:02,338 INFO L129 PetriNetUnfolder]: 523/9864 cut-off events. [2021-03-24 13:49:02,339 INFO L130 PetriNetUnfolder]: For 500693/514108 co-relation queries the response was YES. [2021-03-24 13:49:02,412 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83626 conditions, 9864 events. 523/9864 cut-off events. For 500693/514108 co-relation queries the response was YES. Maximal size of possible extension queue 1552. Compared 176586 event pairs, 523 based on Foata normal form. 72/9457 useless extension candidates. Maximal degree in co-relation 83451. Up to 1720 conditions per place. [2021-03-24 13:49:02,435 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 530 selfloop transitions, 527 changer transitions 2/1073 dead transitions. [2021-03-24 13:49:02,436 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 1073 transitions, 51472 flow [2021-03-24 13:49:02,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:49:02,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:49:02,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:49:02,437 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:49:02,437 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:49:02,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:49:02,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:49:02,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:49:02,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:02,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:02,438 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:02,438 INFO L185 Difference]: Start difference. First operand has 491 places, 1062 transitions, 49058 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:49:02,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 1073 transitions, 51472 flow [2021-03-24 13:49:07,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 1073 transitions, 50393 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-03-24 13:49:07,671 INFO L241 Difference]: Finished difference. Result has 493 places, 1060 transitions, 48929 flow [2021-03-24 13:49:07,671 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=47989, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1062, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=527, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48929, PETRI_PLACES=493, PETRI_TRANSITIONS=1060} [2021-03-24 13:49:07,671 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 449 predicate places. [2021-03-24 13:49:07,671 INFO L480 AbstractCegarLoop]: Abstraction has has 493 places, 1060 transitions, 48929 flow [2021-03-24 13:49:07,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:07,672 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:49:07,672 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:49:07,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-03-24 13:49:07,672 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:49:07,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:49:07,672 INFO L82 PathProgramCache]: Analyzing trace with hash -360982678, now seen corresponding path program 80 times [2021-03-24 13:49:07,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:49:07,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737764366] [2021-03-24 13:49:07,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:49:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:49:07,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:07,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:49:07,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:07,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:49:07,684 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:49:07,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:49:07,691 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:49:07,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:49:07,700 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:49:07,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:49:07,723 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:49:07,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:49:07,751 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:49:07,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:49:07,775 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:49:07,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:49:07,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:49:07,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737764366] [2021-03-24 13:49:07,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:49:07,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:49:07,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295777437] [2021-03-24 13:49:07,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:49:07,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:49:07,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:49:07,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:49:07,800 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:49:07,800 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 1060 transitions, 48929 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:07,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:49:07,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:49:07,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:49:13,039 INFO L129 PetriNetUnfolder]: 523/9856 cut-off events. [2021-03-24 13:49:13,040 INFO L130 PetriNetUnfolder]: For 500134/513554 co-relation queries the response was YES. [2021-03-24 13:49:13,113 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83574 conditions, 9856 events. 523/9856 cut-off events. For 500134/513554 co-relation queries the response was YES. Maximal size of possible extension queue 1550. Compared 176366 event pairs, 523 based on Foata normal form. 74/9451 useless extension candidates. Maximal degree in co-relation 83399. Up to 1720 conditions per place. [2021-03-24 13:49:13,134 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 512 selfloop transitions, 541 changer transitions 2/1069 dead transitions. [2021-03-24 13:49:13,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 1069 transitions, 51257 flow [2021-03-24 13:49:13,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:49:13,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:49:13,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:49:13,135 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:49:13,135 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:49:13,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:49:13,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:49:13,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:49:13,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:13,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:13,136 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:13,136 INFO L185 Difference]: Start difference. First operand has 493 places, 1060 transitions, 48929 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:49:13,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 1069 transitions, 51257 flow [2021-03-24 13:49:18,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 1069 transitions, 50407 flow, removed 21 selfloop flow, removed 5 redundant places. [2021-03-24 13:49:18,034 INFO L241 Difference]: Finished difference. Result has 497 places, 1062 transitions, 49352 flow [2021-03-24 13:49:18,034 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48089, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=537, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49352, PETRI_PLACES=497, PETRI_TRANSITIONS=1062} [2021-03-24 13:49:18,034 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 453 predicate places. [2021-03-24 13:49:18,034 INFO L480 AbstractCegarLoop]: Abstraction has has 497 places, 1062 transitions, 49352 flow [2021-03-24 13:49:18,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:18,035 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:49:18,035 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:49:18,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-03-24 13:49:18,035 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:49:18,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:49:18,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1814298980, now seen corresponding path program 81 times [2021-03-24 13:49:18,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:49:18,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135025144] [2021-03-24 13:49:18,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:49:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:49:18,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:18,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:49:18,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:18,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:49:18,046 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:49:18,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:49:18,053 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:49:18,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:49:18,062 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:49:18,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:49:18,084 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:49:18,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:49:18,111 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:49:18,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:49:18,136 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:49:18,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:49:18,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:49:18,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135025144] [2021-03-24 13:49:18,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:49:18,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:49:18,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397007710] [2021-03-24 13:49:18,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:49:18,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:49:18,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:49:18,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:49:18,161 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:49:18,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 1062 transitions, 49352 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:18,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:49:18,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:49:18,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:49:23,216 INFO L129 PetriNetUnfolder]: 523/9848 cut-off events. [2021-03-24 13:49:23,216 INFO L130 PetriNetUnfolder]: For 503064/516484 co-relation queries the response was YES. [2021-03-24 13:49:23,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84081 conditions, 9848 events. 523/9848 cut-off events. For 503064/516484 co-relation queries the response was YES. Maximal size of possible extension queue 1549. Compared 176298 event pairs, 523 based on Foata normal form. 74/9443 useless extension candidates. Maximal degree in co-relation 83906. Up to 1720 conditions per place. [2021-03-24 13:49:23,317 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 512 selfloop transitions, 539 changer transitions 2/1067 dead transitions. [2021-03-24 13:49:23,317 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 1067 transitions, 51478 flow [2021-03-24 13:49:23,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:49:23,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:49:23,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:49:23,318 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:49:23,318 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:49:23,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:49:23,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:49:23,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:49:23,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:23,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:23,319 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:23,319 INFO L185 Difference]: Start difference. First operand has 497 places, 1062 transitions, 49352 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:49:23,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 1067 transitions, 51478 flow [2021-03-24 13:49:28,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 1067 transitions, 50480 flow, removed 18 selfloop flow, removed 5 redundant places. [2021-03-24 13:49:28,358 INFO L241 Difference]: Finished difference. Result has 500 places, 1060 transitions, 49321 flow [2021-03-24 13:49:28,358 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48364, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1062, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=539, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49321, PETRI_PLACES=500, PETRI_TRANSITIONS=1060} [2021-03-24 13:49:28,358 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 456 predicate places. [2021-03-24 13:49:28,359 INFO L480 AbstractCegarLoop]: Abstraction has has 500 places, 1060 transitions, 49321 flow [2021-03-24 13:49:28,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:28,359 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:49:28,359 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:49:28,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-03-24 13:49:28,359 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:49:28,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:49:28,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1724076524, now seen corresponding path program 82 times [2021-03-24 13:49:28,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:49:28,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086395329] [2021-03-24 13:49:28,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:49:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:49:28,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:28,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:49:28,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:28,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:49:28,370 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:49:28,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:49:28,376 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:49:28,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:49:28,385 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:49:28,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:49:28,398 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:49:28,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:49:28,415 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:49:28,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:49:28,438 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:49:28,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:49:28,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:49:28,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086395329] [2021-03-24 13:49:28,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:49:28,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:49:28,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627139951] [2021-03-24 13:49:28,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:49:28,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:49:28,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:49:28,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:49:28,463 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:49:28,463 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 1060 transitions, 49321 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:28,463 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:49:28,463 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:49:28,463 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:49:33,533 INFO L129 PetriNetUnfolder]: 523/9840 cut-off events. [2021-03-24 13:49:33,533 INFO L130 PetriNetUnfolder]: For 501545/514965 co-relation queries the response was YES. [2021-03-24 13:49:33,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84138 conditions, 9840 events. 523/9840 cut-off events. For 501545/514965 co-relation queries the response was YES. Maximal size of possible extension queue 1547. Compared 176122 event pairs, 523 based on Foata normal form. 74/9435 useless extension candidates. Maximal degree in co-relation 83963. Up to 1720 conditions per place. [2021-03-24 13:49:33,632 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 497 selfloop transitions, 553 changer transitions 1/1065 dead transitions. [2021-03-24 13:49:33,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 1065 transitions, 51443 flow [2021-03-24 13:49:33,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:49:33,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:49:33,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:49:33,633 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:49:33,633 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:49:33,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:49:33,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:49:33,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:49:33,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:33,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:33,634 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:33,634 INFO L185 Difference]: Start difference. First operand has 500 places, 1060 transitions, 49321 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:49:33,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 1065 transitions, 51443 flow [2021-03-24 13:49:38,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 1065 transitions, 50376 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-24 13:49:38,583 INFO L241 Difference]: Finished difference. Result has 502 places, 1059 transitions, 49300 flow [2021-03-24 13:49:38,584 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48264, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=553, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49300, PETRI_PLACES=502, PETRI_TRANSITIONS=1059} [2021-03-24 13:49:38,584 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 458 predicate places. [2021-03-24 13:49:38,584 INFO L480 AbstractCegarLoop]: Abstraction has has 502 places, 1059 transitions, 49300 flow [2021-03-24 13:49:38,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:38,584 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:49:38,584 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:49:38,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-03-24 13:49:38,584 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:49:38,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:49:38,585 INFO L82 PathProgramCache]: Analyzing trace with hash 2110304440, now seen corresponding path program 83 times [2021-03-24 13:49:38,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:49:38,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923401327] [2021-03-24 13:49:38,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:49:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:49:38,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:38,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:49:38,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:38,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:49:38,596 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:49:38,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:49:38,602 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:49:38,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:49:38,618 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:49:38,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:49:38,631 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:49:38,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:49:38,702 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:49:38,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:49:38,726 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:49:38,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:49:38,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:49:38,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923401327] [2021-03-24 13:49:38,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:49:38,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:49:38,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193185240] [2021-03-24 13:49:38,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:49:38,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:49:38,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:49:38,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:49:38,751 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:49:38,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 1059 transitions, 49300 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:38,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:49:38,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:49:38,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:49:43,822 INFO L129 PetriNetUnfolder]: 523/9834 cut-off events. [2021-03-24 13:49:43,822 INFO L130 PetriNetUnfolder]: For 501144/514564 co-relation queries the response was YES. [2021-03-24 13:49:43,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84109 conditions, 9834 events. 523/9834 cut-off events. For 501144/514564 co-relation queries the response was YES. Maximal size of possible extension queue 1546. Compared 175830 event pairs, 523 based on Foata normal form. 74/9429 useless extension candidates. Maximal degree in co-relation 83934. Up to 1720 conditions per place. [2021-03-24 13:49:43,932 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 486 selfloop transitions, 562 changer transitions 2/1064 dead transitions. [2021-03-24 13:49:43,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 1064 transitions, 51420 flow [2021-03-24 13:49:43,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:49:43,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:49:43,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:49:43,933 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:49:43,933 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:49:43,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:49:43,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:49:43,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:49:43,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:43,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:43,934 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:43,934 INFO L185 Difference]: Start difference. First operand has 502 places, 1059 transitions, 49300 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:49:43,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 1064 transitions, 51420 flow [2021-03-24 13:49:49,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 1064 transitions, 50603 flow, removed 19 selfloop flow, removed 4 redundant places. [2021-03-24 13:49:49,253 INFO L241 Difference]: Finished difference. Result has 506 places, 1057 transitions, 49487 flow [2021-03-24 13:49:49,254 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48493, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1059, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=562, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49487, PETRI_PLACES=506, PETRI_TRANSITIONS=1057} [2021-03-24 13:49:49,254 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 462 predicate places. [2021-03-24 13:49:49,254 INFO L480 AbstractCegarLoop]: Abstraction has has 506 places, 1057 transitions, 49487 flow [2021-03-24 13:49:49,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:49,254 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:49:49,254 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:49:49,254 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-03-24 13:49:49,254 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:49:49,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:49:49,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1506881736, now seen corresponding path program 84 times [2021-03-24 13:49:49,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:49:49,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141785991] [2021-03-24 13:49:49,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:49:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:49:49,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:49,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:49:49,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:49,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:49:49,266 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:49:49,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:49:49,273 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:49:49,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:49:49,282 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:49:49,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:49:49,296 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:49:49,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:49:49,325 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:49:49,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:49:49,350 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:49:49,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:49:49,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:49:49,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141785991] [2021-03-24 13:49:49,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:49:49,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:49:49,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165937820] [2021-03-24 13:49:49,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:49:49,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:49:49,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:49:49,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:49:49,376 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:49:49,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 1057 transitions, 49487 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:49,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:49:49,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:49:49,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:49:54,497 INFO L129 PetriNetUnfolder]: 523/9827 cut-off events. [2021-03-24 13:49:54,497 INFO L130 PetriNetUnfolder]: For 501536/514956 co-relation queries the response was YES. [2021-03-24 13:49:54,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84588 conditions, 9827 events. 523/9827 cut-off events. For 501536/514956 co-relation queries the response was YES. Maximal size of possible extension queue 1545. Compared 175739 event pairs, 523 based on Foata normal form. 74/9422 useless extension candidates. Maximal degree in co-relation 84413. Up to 1720 conditions per place. [2021-03-24 13:49:54,598 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 487 selfloop transitions, 560 changer transitions 1/1062 dead transitions. [2021-03-24 13:49:54,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 1062 transitions, 51603 flow [2021-03-24 13:49:54,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:49:54,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:49:54,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:49:54,600 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:49:54,600 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:49:54,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:49:54,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:49:54,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:49:54,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:54,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:54,601 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:54,601 INFO L185 Difference]: Start difference. First operand has 506 places, 1057 transitions, 49487 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:49:54,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 1062 transitions, 51603 flow [2021-03-24 13:49:59,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 1062 transitions, 50439 flow, removed 43 selfloop flow, removed 6 redundant places. [2021-03-24 13:49:59,814 INFO L241 Difference]: Finished difference. Result has 508 places, 1056 transitions, 49378 flow [2021-03-24 13:49:59,814 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48333, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1057, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=560, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49378, PETRI_PLACES=508, PETRI_TRANSITIONS=1056} [2021-03-24 13:49:59,814 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 464 predicate places. [2021-03-24 13:49:59,815 INFO L480 AbstractCegarLoop]: Abstraction has has 508 places, 1056 transitions, 49378 flow [2021-03-24 13:49:59,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:59,815 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:49:59,815 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:49:59,815 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-03-24 13:49:59,815 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:49:59,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:49:59,815 INFO L82 PathProgramCache]: Analyzing trace with hash -104259412, now seen corresponding path program 85 times [2021-03-24 13:49:59,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:49:59,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844321777] [2021-03-24 13:49:59,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:49:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:49:59,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:59,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:49:59,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:49:59,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:49:59,826 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:49:59,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:49:59,833 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:49:59,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:49:59,842 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:49:59,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:49:59,855 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:49:59,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:49:59,872 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:49:59,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:49:59,895 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:49:59,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:49:59,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:49:59,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844321777] [2021-03-24 13:49:59,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:49:59,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:49:59,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204218901] [2021-03-24 13:49:59,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:49:59,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:49:59,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:49:59,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:49:59,918 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:49:59,918 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 1056 transitions, 49378 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:49:59,918 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:49:59,918 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:49:59,918 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:50:05,083 INFO L129 PetriNetUnfolder]: 523/9824 cut-off events. [2021-03-24 13:50:05,083 INFO L130 PetriNetUnfolder]: For 497281/510696 co-relation queries the response was YES. [2021-03-24 13:50:05,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84621 conditions, 9824 events. 523/9824 cut-off events. For 497281/510696 co-relation queries the response was YES. Maximal size of possible extension queue 1544. Compared 175585 event pairs, 523 based on Foata normal form. 72/9417 useless extension candidates. Maximal degree in co-relation 84447. Up to 1720 conditions per place. [2021-03-24 13:50:05,194 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 494 selfloop transitions, 551 changer transitions 2/1061 dead transitions. [2021-03-24 13:50:05,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 1061 transitions, 51492 flow [2021-03-24 13:50:05,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:50:05,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:50:05,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:50:05,195 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:50:05,195 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:50:05,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:50:05,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:50:05,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:50:05,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:05,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:05,196 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:05,196 INFO L185 Difference]: Start difference. First operand has 508 places, 1056 transitions, 49378 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:50:05,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 1061 transitions, 51492 flow [2021-03-24 13:50:10,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 1061 transitions, 50500 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 13:50:11,040 INFO L241 Difference]: Finished difference. Result has 511 places, 1054 transitions, 49368 flow [2021-03-24 13:50:11,041 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48396, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1056, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=551, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49368, PETRI_PLACES=511, PETRI_TRANSITIONS=1054} [2021-03-24 13:50:11,041 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 467 predicate places. [2021-03-24 13:50:11,042 INFO L480 AbstractCegarLoop]: Abstraction has has 511 places, 1054 transitions, 49368 flow [2021-03-24 13:50:11,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:11,042 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:50:11,042 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:50:11,042 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-03-24 13:50:11,042 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:50:11,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:50:11,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1801091880, now seen corresponding path program 86 times [2021-03-24 13:50:11,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:50:11,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854703514] [2021-03-24 13:50:11,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:50:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:50:11,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:11,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:50:11,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:11,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:50:11,060 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:50:11,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:50:11,067 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:50:11,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:50:11,076 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:50:11,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:50:11,090 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:50:11,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:50:11,108 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:50:11,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:50:11,132 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:50:11,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:50:11,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:50:11,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854703514] [2021-03-24 13:50:11,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:50:11,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:50:11,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582911278] [2021-03-24 13:50:11,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:50:11,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:50:11,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:50:11,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:50:11,156 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:50:11,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 1054 transitions, 49368 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:11,156 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:50:11,156 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:50:11,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:50:16,322 INFO L129 PetriNetUnfolder]: 523/9817 cut-off events. [2021-03-24 13:50:16,322 INFO L130 PetriNetUnfolder]: For 496850/510270 co-relation queries the response was YES. [2021-03-24 13:50:16,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84710 conditions, 9817 events. 523/9817 cut-off events. For 496850/510270 co-relation queries the response was YES. Maximal size of possible extension queue 1542. Compared 175520 event pairs, 523 based on Foata normal form. 74/9413 useless extension candidates. Maximal degree in co-relation 84536. Up to 1720 conditions per place. [2021-03-24 13:50:16,430 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 482 selfloop transitions, 561 changer transitions 2/1059 dead transitions. [2021-03-24 13:50:16,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 1059 transitions, 51478 flow [2021-03-24 13:50:16,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:50:16,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:50:16,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:50:16,431 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:50:16,431 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:50:16,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:50:16,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:50:16,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:50:16,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:16,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:16,433 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:16,433 INFO L185 Difference]: Start difference. First operand has 511 places, 1054 transitions, 49368 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:50:16,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 1059 transitions, 51478 flow [2021-03-24 13:50:21,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 1059 transitions, 50350 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-24 13:50:21,454 INFO L241 Difference]: Finished difference. Result has 512 places, 1052 transitions, 49249 flow [2021-03-24 13:50:21,454 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48250, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1054, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=561, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49249, PETRI_PLACES=512, PETRI_TRANSITIONS=1052} [2021-03-24 13:50:21,455 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 468 predicate places. [2021-03-24 13:50:21,455 INFO L480 AbstractCegarLoop]: Abstraction has has 512 places, 1052 transitions, 49249 flow [2021-03-24 13:50:21,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:21,455 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:50:21,455 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:50:21,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-03-24 13:50:21,455 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:50:21,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:50:21,455 INFO L82 PathProgramCache]: Analyzing trace with hash 2115163928, now seen corresponding path program 87 times [2021-03-24 13:50:21,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:50:21,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307187896] [2021-03-24 13:50:21,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:50:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:50:21,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:21,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:50:21,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:21,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:50:21,467 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:50:21,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:50:21,473 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:50:21,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:50:21,483 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:50:21,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:50:21,506 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 13:50:21,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 13:50:21,524 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:50:21,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:50:21,549 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:50:21,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:50:21,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:50:21,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307187896] [2021-03-24 13:50:21,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:50:21,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:50:21,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046497253] [2021-03-24 13:50:21,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:50:21,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:50:21,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:50:21,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:50:21,574 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:50:21,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 1052 transitions, 49249 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:21,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:50:21,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:50:21,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:50:26,843 INFO L129 PetriNetUnfolder]: 523/9799 cut-off events. [2021-03-24 13:50:26,843 INFO L130 PetriNetUnfolder]: For 493385/506805 co-relation queries the response was YES. [2021-03-24 13:50:26,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84430 conditions, 9799 events. 523/9799 cut-off events. For 493385/506805 co-relation queries the response was YES. Maximal size of possible extension queue 1540. Compared 175233 event pairs, 523 based on Foata normal form. 74/9397 useless extension candidates. Maximal degree in co-relation 84257. Up to 1720 conditions per place. [2021-03-24 13:50:26,935 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 487 selfloop transitions, 554 changer transitions 2/1057 dead transitions. [2021-03-24 13:50:26,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 1057 transitions, 51355 flow [2021-03-24 13:50:26,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:50:26,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:50:26,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:50:26,936 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:50:26,936 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:50:26,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:50:26,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:50:26,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:50:26,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:26,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:26,937 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:26,937 INFO L185 Difference]: Start difference. First operand has 512 places, 1052 transitions, 49249 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:50:26,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 1057 transitions, 51355 flow [2021-03-24 13:50:31,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 1057 transitions, 50245 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-24 13:50:31,857 INFO L241 Difference]: Finished difference. Result has 513 places, 1050 transitions, 49123 flow [2021-03-24 13:50:31,858 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48149, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1052, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=554, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49123, PETRI_PLACES=513, PETRI_TRANSITIONS=1050} [2021-03-24 13:50:31,858 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 469 predicate places. [2021-03-24 13:50:31,858 INFO L480 AbstractCegarLoop]: Abstraction has has 513 places, 1050 transitions, 49123 flow [2021-03-24 13:50:31,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:31,858 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:50:31,858 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:50:31,858 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-03-24 13:50:31,858 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:50:31,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:50:31,859 INFO L82 PathProgramCache]: Analyzing trace with hash -604319470, now seen corresponding path program 88 times [2021-03-24 13:50:31,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:50:31,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842359341] [2021-03-24 13:50:31,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:50:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:50:31,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:31,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:50:31,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:31,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:50:31,870 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:50:31,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:50:31,877 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:50:31,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:50:31,886 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:50:31,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:50:31,910 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:50:31,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:50:31,937 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:50:31,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:50:31,962 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:50:31,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:50:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:50:31,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842359341] [2021-03-24 13:50:31,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:50:31,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:50:31,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870588481] [2021-03-24 13:50:31,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:50:31,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:50:31,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:50:31,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:50:31,987 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:50:31,987 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 1050 transitions, 49123 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:31,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:50:31,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:50:31,988 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:50:37,149 INFO L129 PetriNetUnfolder]: 523/9789 cut-off events. [2021-03-24 13:50:37,149 INFO L130 PetriNetUnfolder]: For 491891/505311 co-relation queries the response was YES. [2021-03-24 13:50:37,252 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84313 conditions, 9789 events. 523/9789 cut-off events. For 491891/505311 co-relation queries the response was YES. Maximal size of possible extension queue 1538. Compared 174864 event pairs, 523 based on Foata normal form. 74/9388 useless extension candidates. Maximal degree in co-relation 84141. Up to 1720 conditions per place. [2021-03-24 13:50:37,278 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 495 selfloop transitions, 544 changer transitions 2/1055 dead transitions. [2021-03-24 13:50:37,278 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 1055 transitions, 51225 flow [2021-03-24 13:50:37,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:50:37,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:50:37,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:50:37,279 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:50:37,279 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:50:37,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:50:37,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:50:37,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:50:37,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:37,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:37,280 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:37,281 INFO L185 Difference]: Start difference. First operand has 513 places, 1050 transitions, 49123 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:50:37,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 1055 transitions, 51225 flow [2021-03-24 13:50:42,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 1055 transitions, 50142 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 13:50:42,706 INFO L241 Difference]: Finished difference. Result has 515 places, 1048 transitions, 49001 flow [2021-03-24 13:50:42,707 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48050, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1050, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=544, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49001, PETRI_PLACES=515, PETRI_TRANSITIONS=1048} [2021-03-24 13:50:42,707 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 471 predicate places. [2021-03-24 13:50:42,707 INFO L480 AbstractCegarLoop]: Abstraction has has 515 places, 1048 transitions, 49001 flow [2021-03-24 13:50:42,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:42,707 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:50:42,707 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:50:42,707 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-03-24 13:50:42,727 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:50:42,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:50:42,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1189967436, now seen corresponding path program 89 times [2021-03-24 13:50:42,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:50:42,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342594893] [2021-03-24 13:50:42,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:50:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:50:42,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:42,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:50:42,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:42,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:50:42,756 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:50:42,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:50:42,764 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:50:42,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:50:42,775 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:50:42,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:50:42,803 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 13:50:42,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:50:42,839 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:50:42,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:50:42,865 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:50:42,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:50:42,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:50:42,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342594893] [2021-03-24 13:50:42,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:50:42,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:50:42,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081669236] [2021-03-24 13:50:42,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:50:42,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:50:42,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:50:42,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:50:42,891 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:50:42,892 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 1048 transitions, 49001 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:42,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:50:42,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:50:42,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:50:48,098 INFO L129 PetriNetUnfolder]: 523/9781 cut-off events. [2021-03-24 13:50:48,098 INFO L130 PetriNetUnfolder]: For 491192/504612 co-relation queries the response was YES. [2021-03-24 13:50:48,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84262 conditions, 9781 events. 523/9781 cut-off events. For 491192/504612 co-relation queries the response was YES. Maximal size of possible extension queue 1536. Compared 174735 event pairs, 523 based on Foata normal form. 74/9380 useless extension candidates. Maximal degree in co-relation 84090. Up to 1720 conditions per place. [2021-03-24 13:50:48,198 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 496 selfloop transitions, 541 changer transitions 2/1053 dead transitions. [2021-03-24 13:50:48,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 1053 transitions, 51099 flow [2021-03-24 13:50:48,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:50:48,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:50:48,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:50:48,199 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:50:48,199 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:50:48,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:50:48,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:50:48,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:50:48,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:48,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:48,201 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:48,201 INFO L185 Difference]: Start difference. First operand has 515 places, 1048 transitions, 49001 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:50:48,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 1053 transitions, 51099 flow [2021-03-24 13:50:53,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 1053 transitions, 50025 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 13:50:53,126 INFO L241 Difference]: Finished difference. Result has 517 places, 1046 transitions, 48882 flow [2021-03-24 13:50:53,127 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=47937, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1048, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=541, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48882, PETRI_PLACES=517, PETRI_TRANSITIONS=1046} [2021-03-24 13:50:53,127 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 473 predicate places. [2021-03-24 13:50:53,127 INFO L480 AbstractCegarLoop]: Abstraction has has 517 places, 1046 transitions, 48882 flow [2021-03-24 13:50:53,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:53,127 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:50:53,127 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:50:53,127 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-03-24 13:50:53,127 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:50:53,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:50:53,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1278821634, now seen corresponding path program 90 times [2021-03-24 13:50:53,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:50:53,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453097915] [2021-03-24 13:50:53,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:50:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:50:53,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:53,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:50:53,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:50:53,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:50:53,140 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:50:53,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:50:53,146 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:50:53,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:50:53,155 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:50:53,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:50:53,178 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 13:50:53,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:50:53,209 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:50:53,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:50:53,233 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:50:53,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:50:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:50:53,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453097915] [2021-03-24 13:50:53,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:50:53,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:50:53,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213803753] [2021-03-24 13:50:53,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:50:53,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:50:53,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:50:53,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:50:53,258 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:50:53,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 1046 transitions, 48882 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:53,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:50:53,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:50:53,258 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:50:58,266 INFO L129 PetriNetUnfolder]: 523/9773 cut-off events. [2021-03-24 13:50:58,267 INFO L130 PetriNetUnfolder]: For 490402/503817 co-relation queries the response was YES. [2021-03-24 13:50:58,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84207 conditions, 9773 events. 523/9773 cut-off events. For 490402/503817 co-relation queries the response was YES. Maximal size of possible extension queue 1534. Compared 174540 event pairs, 523 based on Foata normal form. 72/9370 useless extension candidates. Maximal degree in co-relation 84035. Up to 1720 conditions per place. [2021-03-24 13:50:58,364 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 498 selfloop transitions, 538 changer transitions 1/1051 dead transitions. [2021-03-24 13:50:58,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 1051 transitions, 50976 flow [2021-03-24 13:50:58,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:50:58,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:50:58,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:50:58,365 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:50:58,365 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:50:58,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:50:58,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:50:58,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:50:58,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:58,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:58,366 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:50:58,366 INFO L185 Difference]: Start difference. First operand has 517 places, 1046 transitions, 48882 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:50:58,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 1051 transitions, 50976 flow [2021-03-24 13:51:03,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 1051 transitions, 50358 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-03-24 13:51:03,415 INFO L241 Difference]: Finished difference. Result has 521 places, 1045 transitions, 49268 flow [2021-03-24 13:51:03,415 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48274, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1046, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=538, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49268, PETRI_PLACES=521, PETRI_TRANSITIONS=1045} [2021-03-24 13:51:03,416 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 477 predicate places. [2021-03-24 13:51:03,416 INFO L480 AbstractCegarLoop]: Abstraction has has 521 places, 1045 transitions, 49268 flow [2021-03-24 13:51:03,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:03,416 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:51:03,416 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:51:03,416 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-03-24 13:51:03,416 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:51:03,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:51:03,416 INFO L82 PathProgramCache]: Analyzing trace with hash -378235580, now seen corresponding path program 91 times [2021-03-24 13:51:03,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:51:03,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429886563] [2021-03-24 13:51:03,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:51:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:51:03,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:03,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:51:03,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:03,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:51:03,427 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:51:03,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:51:03,434 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:51:03,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:51:03,443 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:51:03,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:51:03,456 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 13:51:03,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:51:03,485 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:51:03,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:51:03,509 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:51:03,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:51:03,532 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 13:51:03,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429886563] [2021-03-24 13:51:03,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:51:03,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:51:03,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094753474] [2021-03-24 13:51:03,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:51:03,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:51:03,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:51:03,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:51:03,533 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:51:03,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 1045 transitions, 49268 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:03,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:51:03,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:51:03,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:51:08,633 INFO L129 PetriNetUnfolder]: 523/9766 cut-off events. [2021-03-24 13:51:08,633 INFO L130 PetriNetUnfolder]: For 495516/508936 co-relation queries the response was YES. [2021-03-24 13:51:08,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84641 conditions, 9766 events. 523/9766 cut-off events. For 495516/508936 co-relation queries the response was YES. Maximal size of possible extension queue 1533. Compared 174460 event pairs, 523 based on Foata normal form. 74/9365 useless extension candidates. Maximal degree in co-relation 84469. Up to 1720 conditions per place. [2021-03-24 13:51:08,723 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 518 selfloop transitions, 521 changer transitions 1/1054 dead transitions. [2021-03-24 13:51:08,723 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 1054 transitions, 51560 flow [2021-03-24 13:51:08,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:51:08,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:51:08,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:51:08,724 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:51:08,724 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:51:08,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:51:08,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:51:08,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:51:08,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:08,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:08,725 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:08,725 INFO L185 Difference]: Start difference. First operand has 521 places, 1045 transitions, 49268 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:51:08,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 1054 transitions, 51560 flow [2021-03-24 13:51:13,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 1054 transitions, 50481 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 13:51:13,776 INFO L241 Difference]: Finished difference. Result has 524 places, 1048 transitions, 49440 flow [2021-03-24 13:51:13,777 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48207, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1045, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=517, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49440, PETRI_PLACES=524, PETRI_TRANSITIONS=1048} [2021-03-24 13:51:13,777 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 480 predicate places. [2021-03-24 13:51:13,777 INFO L480 AbstractCegarLoop]: Abstraction has has 524 places, 1048 transitions, 49440 flow [2021-03-24 13:51:13,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:13,777 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:51:13,777 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:51:13,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-03-24 13:51:13,777 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:51:13,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:51:13,777 INFO L82 PathProgramCache]: Analyzing trace with hash -806416598, now seen corresponding path program 92 times [2021-03-24 13:51:13,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:51:13,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353672716] [2021-03-24 13:51:13,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:51:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:51:13,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:13,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:51:13,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:13,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:51:13,788 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:51:13,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:51:13,794 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:51:13,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:51:13,804 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:51:13,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:51:13,817 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 13:51:13,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:51:13,846 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:51:13,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:51:13,870 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:51:13,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:51:13,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:51:13,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353672716] [2021-03-24 13:51:13,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:51:13,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:51:13,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049143670] [2021-03-24 13:51:13,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:51:13,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:51:13,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:51:13,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:51:13,894 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:51:13,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 1048 transitions, 49440 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:13,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:51:13,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:51:13,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:51:19,119 INFO L129 PetriNetUnfolder]: 523/9759 cut-off events. [2021-03-24 13:51:19,119 INFO L130 PetriNetUnfolder]: For 497982/511402 co-relation queries the response was YES. [2021-03-24 13:51:19,196 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84649 conditions, 9759 events. 523/9759 cut-off events. For 497982/511402 co-relation queries the response was YES. Maximal size of possible extension queue 1532. Compared 174257 event pairs, 523 based on Foata normal form. 74/9358 useless extension candidates. Maximal degree in co-relation 84476. Up to 1720 conditions per place. [2021-03-24 13:51:19,218 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 514 selfloop transitions, 523 changer transitions 2/1053 dead transitions. [2021-03-24 13:51:19,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1053 transitions, 51538 flow [2021-03-24 13:51:19,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:51:19,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:51:19,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:51:19,220 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:51:19,220 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:51:19,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:51:19,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:51:19,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:51:19,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:19,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:19,221 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:19,221 INFO L185 Difference]: Start difference. First operand has 524 places, 1048 transitions, 49440 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:51:19,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1053 transitions, 51538 flow [2021-03-24 13:51:24,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 1053 transitions, 50562 flow, removed 14 selfloop flow, removed 5 redundant places. [2021-03-24 13:51:24,436 INFO L241 Difference]: Finished difference. Result has 527 places, 1046 transitions, 49388 flow [2021-03-24 13:51:24,437 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48474, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1048, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=523, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49388, PETRI_PLACES=527, PETRI_TRANSITIONS=1046} [2021-03-24 13:51:24,437 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 483 predicate places. [2021-03-24 13:51:24,437 INFO L480 AbstractCegarLoop]: Abstraction has has 527 places, 1046 transitions, 49388 flow [2021-03-24 13:51:24,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:24,437 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:51:24,437 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:51:24,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-03-24 13:51:24,437 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:51:24,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:51:24,437 INFO L82 PathProgramCache]: Analyzing trace with hash -462220208, now seen corresponding path program 93 times [2021-03-24 13:51:24,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:51:24,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913995799] [2021-03-24 13:51:24,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:51:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:51:24,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:24,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:51:24,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:24,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:51:24,449 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:51:24,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:51:24,455 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:51:24,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:51:24,465 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:51:24,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:51:24,478 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:51:24,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:51:24,495 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:51:24,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:51:24,518 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:51:24,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:51:24,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:51:24,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913995799] [2021-03-24 13:51:24,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:51:24,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:51:24,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436492402] [2021-03-24 13:51:24,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:51:24,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:51:24,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:51:24,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:51:24,542 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:51:24,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 1046 transitions, 49388 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:24,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:51:24,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:51:24,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:51:29,856 INFO L129 PetriNetUnfolder]: 523/9751 cut-off events. [2021-03-24 13:51:29,856 INFO L130 PetriNetUnfolder]: For 497171/510591 co-relation queries the response was YES. [2021-03-24 13:51:29,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84710 conditions, 9751 events. 523/9751 cut-off events. For 497171/510591 co-relation queries the response was YES. Maximal size of possible extension queue 1531. Compared 174077 event pairs, 523 based on Foata normal form. 74/9350 useless extension candidates. Maximal degree in co-relation 84537. Up to 1720 conditions per place. [2021-03-24 13:51:29,948 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 521 selfloop transitions, 515 changer transitions 1/1051 dead transitions. [2021-03-24 13:51:29,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 1051 transitions, 51482 flow [2021-03-24 13:51:29,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:51:29,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:51:29,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:51:29,950 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:51:29,950 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:51:29,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:51:29,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:51:29,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:51:29,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:29,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:29,951 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:29,951 INFO L185 Difference]: Start difference. First operand has 527 places, 1046 transitions, 49388 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:51:29,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 1051 transitions, 51482 flow [2021-03-24 13:51:35,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 1051 transitions, 50443 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-03-24 13:51:35,034 INFO L241 Difference]: Finished difference. Result has 529 places, 1045 transitions, 49317 flow [2021-03-24 13:51:35,035 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48359, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1046, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=515, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49317, PETRI_PLACES=529, PETRI_TRANSITIONS=1045} [2021-03-24 13:51:35,035 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 485 predicate places. [2021-03-24 13:51:35,035 INFO L480 AbstractCegarLoop]: Abstraction has has 529 places, 1045 transitions, 49317 flow [2021-03-24 13:51:35,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:35,035 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:51:35,035 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:51:35,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-03-24 13:51:35,035 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:51:35,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:51:35,035 INFO L82 PathProgramCache]: Analyzing trace with hash 38385574, now seen corresponding path program 94 times [2021-03-24 13:51:35,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:51:35,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515296054] [2021-03-24 13:51:35,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:51:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:51:35,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:35,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:51:35,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:35,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:51:35,046 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:51:35,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:51:35,053 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:51:35,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:51:35,062 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:51:35,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:51:35,075 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:51:35,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:51:35,092 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:51:35,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:51:35,115 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:51:35,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:51:35,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:51:35,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515296054] [2021-03-24 13:51:35,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:51:35,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:51:35,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836032142] [2021-03-24 13:51:35,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:51:35,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:51:35,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:51:35,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:51:35,138 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:51:35,138 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 1045 transitions, 49317 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:35,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:51:35,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:51:35,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:51:40,150 INFO L129 PetriNetUnfolder]: 523/9744 cut-off events. [2021-03-24 13:51:40,150 INFO L130 PetriNetUnfolder]: For 496784/510204 co-relation queries the response was YES. [2021-03-24 13:51:40,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84686 conditions, 9744 events. 523/9744 cut-off events. For 496784/510204 co-relation queries the response was YES. Maximal size of possible extension queue 1530. Compared 173908 event pairs, 523 based on Foata normal form. 74/9343 useless extension candidates. Maximal degree in co-relation 84513. Up to 1707 conditions per place. [2021-03-24 13:51:40,248 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 556 selfloop transitions, 519 changer transitions 2/1091 dead transitions. [2021-03-24 13:51:40,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 1091 transitions, 53390 flow [2021-03-24 13:51:40,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:51:40,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:51:40,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:51:40,249 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:51:40,249 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:51:40,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:51:40,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:51:40,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:51:40,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:40,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:40,250 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:40,250 INFO L185 Difference]: Start difference. First operand has 529 places, 1045 transitions, 49317 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:51:40,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 1091 transitions, 53390 flow [2021-03-24 13:51:45,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 1091 transitions, 52325 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 13:51:45,377 INFO L241 Difference]: Finished difference. Result has 533 places, 1068 transitions, 50622 flow [2021-03-24 13:51:45,378 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48300, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1045, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=495, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50622, PETRI_PLACES=533, PETRI_TRANSITIONS=1068} [2021-03-24 13:51:45,378 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 489 predicate places. [2021-03-24 13:51:45,378 INFO L480 AbstractCegarLoop]: Abstraction has has 533 places, 1068 transitions, 50622 flow [2021-03-24 13:51:45,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:45,378 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:51:45,378 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:51:45,378 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-03-24 13:51:45,378 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:51:45,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:51:45,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1916406046, now seen corresponding path program 95 times [2021-03-24 13:51:45,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:51:45,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57364492] [2021-03-24 13:51:45,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:51:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:51:45,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:45,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:51:45,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:45,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:51:45,390 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:51:45,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:51:45,397 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:51:45,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:51:45,406 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:51:45,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:51:45,419 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:51:45,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:51:45,446 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:51:45,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:51:45,470 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:51:45,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:51:45,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:51:45,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57364492] [2021-03-24 13:51:45,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:51:45,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:51:45,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428778518] [2021-03-24 13:51:45,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:51:45,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:51:45,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:51:45,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:51:45,494 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:51:45,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 1068 transitions, 50622 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:45,494 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:51:45,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:51:45,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:51:50,763 INFO L129 PetriNetUnfolder]: 523/9736 cut-off events. [2021-03-24 13:51:50,763 INFO L130 PetriNetUnfolder]: For 507721/521147 co-relation queries the response was YES. [2021-03-24 13:51:50,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84968 conditions, 9736 events. 523/9736 cut-off events. For 507721/521147 co-relation queries the response was YES. Maximal size of possible extension queue 1528. Compared 173702 event pairs, 523 based on Foata normal form. 74/9305 useless extension candidates. Maximal degree in co-relation 84793. Up to 1707 conditions per place. [2021-03-24 13:51:50,868 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 529 selfloop transitions, 528 changer transitions 2/1073 dead transitions. [2021-03-24 13:51:50,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 1073 transitions, 52760 flow [2021-03-24 13:51:50,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:51:50,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:51:50,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:51:50,869 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:51:50,869 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:51:50,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:51:50,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:51:50,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:51:50,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:50,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:50,870 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:50,870 INFO L185 Difference]: Start difference. First operand has 533 places, 1068 transitions, 50622 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:51:50,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 1073 transitions, 52760 flow [2021-03-24 13:51:55,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 1073 transitions, 51731 flow, removed 48 selfloop flow, removed 6 redundant places. [2021-03-24 13:51:55,896 INFO L241 Difference]: Finished difference. Result has 535 places, 1066 transitions, 50530 flow [2021-03-24 13:51:55,897 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49603, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1068, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=528, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50530, PETRI_PLACES=535, PETRI_TRANSITIONS=1066} [2021-03-24 13:51:55,897 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 491 predicate places. [2021-03-24 13:51:55,897 INFO L480 AbstractCegarLoop]: Abstraction has has 535 places, 1066 transitions, 50530 flow [2021-03-24 13:51:55,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:55,897 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:51:55,897 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:51:55,897 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-03-24 13:51:55,897 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:51:55,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:51:55,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1187984936, now seen corresponding path program 96 times [2021-03-24 13:51:55,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:51:55,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513531915] [2021-03-24 13:51:55,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:51:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:51:55,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:55,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:51:55,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:51:55,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:51:55,909 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:51:55,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:51:55,915 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:51:55,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:51:55,924 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:51:55,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:51:55,937 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:51:55,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:51:55,954 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:51:55,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:51:55,977 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:51:55,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:51:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:51:56,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513531915] [2021-03-24 13:51:56,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:51:56,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:51:56,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566865475] [2021-03-24 13:51:56,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:51:56,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:51:56,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:51:56,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:51:56,001 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:51:56,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 1066 transitions, 50530 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:51:56,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:51:56,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:51:56,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:52:01,290 INFO L129 PetriNetUnfolder]: 523/9728 cut-off events. [2021-03-24 13:52:01,290 INFO L130 PetriNetUnfolder]: For 505423/518844 co-relation queries the response was YES. [2021-03-24 13:52:01,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85045 conditions, 9728 events. 523/9728 cut-off events. For 505423/518844 co-relation queries the response was YES. Maximal size of possible extension queue 1526. Compared 173539 event pairs, 523 based on Foata normal form. 72/9310 useless extension candidates. Maximal degree in co-relation 84870. Up to 1707 conditions per place. [2021-03-24 13:52:01,388 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 559 selfloop transitions, 513 changer transitions 1/1087 dead transitions. [2021-03-24 13:52:01,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 1087 transitions, 53396 flow [2021-03-24 13:52:01,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:52:01,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:52:01,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:52:01,389 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:52:01,389 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:52:01,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:52:01,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:52:01,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:52:01,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:01,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:01,390 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:01,390 INFO L185 Difference]: Start difference. First operand has 535 places, 1066 transitions, 50530 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:52:01,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 1087 transitions, 53396 flow [2021-03-24 13:52:06,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 1087 transitions, 52321 flow, removed 25 selfloop flow, removed 8 redundant places. [2021-03-24 13:52:06,603 INFO L241 Difference]: Finished difference. Result has 536 places, 1073 transitions, 50897 flow [2021-03-24 13:52:06,604 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49469, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1066, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=505, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50897, PETRI_PLACES=536, PETRI_TRANSITIONS=1073} [2021-03-24 13:52:06,604 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 492 predicate places. [2021-03-24 13:52:06,604 INFO L480 AbstractCegarLoop]: Abstraction has has 536 places, 1073 transitions, 50897 flow [2021-03-24 13:52:06,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:06,604 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:52:06,604 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:52:06,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-03-24 13:52:06,604 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:52:06,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:52:06,605 INFO L82 PathProgramCache]: Analyzing trace with hash 926716392, now seen corresponding path program 97 times [2021-03-24 13:52:06,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:52:06,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686526445] [2021-03-24 13:52:06,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:52:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:52:06,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:06,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:52:06,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:06,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:52:06,616 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:52:06,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:52:06,622 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:52:06,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:52:06,631 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:52:06,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:52:06,645 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:52:06,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:52:06,663 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:52:06,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:52:06,687 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:52:06,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:52:06,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:52:06,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686526445] [2021-03-24 13:52:06,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:52:06,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:52:06,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927376177] [2021-03-24 13:52:06,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:52:06,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:52:06,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:52:06,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:52:06,712 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:52:06,712 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 1073 transitions, 50897 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:06,712 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:52:06,712 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:52:06,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:52:11,960 INFO L129 PetriNetUnfolder]: 523/9721 cut-off events. [2021-03-24 13:52:11,960 INFO L130 PetriNetUnfolder]: For 503883/517304 co-relation queries the response was YES. [2021-03-24 13:52:12,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85142 conditions, 9721 events. 523/9721 cut-off events. For 503883/517304 co-relation queries the response was YES. Maximal size of possible extension queue 1525. Compared 173463 event pairs, 523 based on Foata normal form. 72/9309 useless extension candidates. Maximal degree in co-relation 84969. Up to 1707 conditions per place. [2021-03-24 13:52:12,052 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 559 selfloop transitions, 511 changer transitions 2/1086 dead transitions. [2021-03-24 13:52:12,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 1086 transitions, 53397 flow [2021-03-24 13:52:12,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:52:12,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:52:12,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:52:12,053 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:52:12,053 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:52:12,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:52:12,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:52:12,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:52:12,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:12,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:12,054 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:12,054 INFO L185 Difference]: Start difference. First operand has 536 places, 1073 transitions, 50897 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:52:12,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 1086 transitions, 53397 flow [2021-03-24 13:52:17,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 1086 transitions, 52097 flow, removed 12 selfloop flow, removed 7 redundant places. [2021-03-24 13:52:17,247 INFO L241 Difference]: Finished difference. Result has 538 places, 1073 transitions, 50635 flow [2021-03-24 13:52:17,247 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49607, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1073, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=510, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50635, PETRI_PLACES=538, PETRI_TRANSITIONS=1073} [2021-03-24 13:52:17,248 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 494 predicate places. [2021-03-24 13:52:17,248 INFO L480 AbstractCegarLoop]: Abstraction has has 538 places, 1073 transitions, 50635 flow [2021-03-24 13:52:17,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:17,248 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:52:17,248 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:52:17,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-03-24 13:52:17,248 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:52:17,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:52:17,248 INFO L82 PathProgramCache]: Analyzing trace with hash -156220312, now seen corresponding path program 98 times [2021-03-24 13:52:17,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:52:17,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521139395] [2021-03-24 13:52:17,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:52:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:52:17,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:17,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:52:17,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:17,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:52:17,259 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:52:17,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:52:17,265 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:52:17,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:52:17,275 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:52:17,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:52:17,287 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:52:17,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:52:17,314 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:52:17,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:52:17,338 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:52:17,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:52:17,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:52:17,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521139395] [2021-03-24 13:52:17,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:52:17,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:52:17,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655565775] [2021-03-24 13:52:17,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:52:17,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:52:17,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:52:17,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:52:17,363 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:52:17,363 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 1073 transitions, 50635 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:17,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:52:17,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:52:17,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:52:22,423 INFO L129 PetriNetUnfolder]: 523/9713 cut-off events. [2021-03-24 13:52:22,424 INFO L130 PetriNetUnfolder]: For 497874/511294 co-relation queries the response was YES. [2021-03-24 13:52:22,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84903 conditions, 9713 events. 523/9713 cut-off events. For 497874/511294 co-relation queries the response was YES. Maximal size of possible extension queue 1523. Compared 173279 event pairs, 523 based on Foata normal form. 74/9297 useless extension candidates. Maximal degree in co-relation 84730. Up to 1707 conditions per place. [2021-03-24 13:52:22,522 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 535 selfloop transitions, 527 changer transitions 2/1078 dead transitions. [2021-03-24 13:52:22,522 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 1078 transitions, 52783 flow [2021-03-24 13:52:22,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:52:22,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:52:22,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:52:22,523 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:52:22,523 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:52:22,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:52:22,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:52:22,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:52:22,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:22,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:22,524 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:22,524 INFO L185 Difference]: Start difference. First operand has 538 places, 1073 transitions, 50635 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:52:22,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 1078 transitions, 52783 flow [2021-03-24 13:52:28,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 1078 transitions, 51770 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-24 13:52:28,243 INFO L241 Difference]: Finished difference. Result has 540 places, 1071 transitions, 50560 flow [2021-03-24 13:52:28,244 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49632, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1073, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=527, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50560, PETRI_PLACES=540, PETRI_TRANSITIONS=1071} [2021-03-24 13:52:28,244 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 496 predicate places. [2021-03-24 13:52:28,244 INFO L480 AbstractCegarLoop]: Abstraction has has 540 places, 1071 transitions, 50560 flow [2021-03-24 13:52:28,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:28,244 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:52:28,245 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:52:28,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-03-24 13:52:28,245 INFO L428 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:52:28,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:52:28,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1626326288, now seen corresponding path program 99 times [2021-03-24 13:52:28,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:52:28,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739130051] [2021-03-24 13:52:28,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:52:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:52:28,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:28,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:52:28,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:28,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:52:28,260 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:52:28,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:52:28,268 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:52:28,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:52:28,277 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:52:28,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:52:28,290 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:52:28,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:52:28,307 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:52:28,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:52:28,358 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:52:28,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:52:28,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:52:28,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739130051] [2021-03-24 13:52:28,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:52:28,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:52:28,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429563096] [2021-03-24 13:52:28,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:52:28,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:52:28,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:52:28,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:52:28,386 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:52:28,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 1071 transitions, 50560 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:28,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:52:28,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:52:28,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:52:33,528 INFO L129 PetriNetUnfolder]: 523/9705 cut-off events. [2021-03-24 13:52:33,528 INFO L130 PetriNetUnfolder]: For 497193/510613 co-relation queries the response was YES. [2021-03-24 13:52:33,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84866 conditions, 9705 events. 523/9705 cut-off events. For 497193/510613 co-relation queries the response was YES. Maximal size of possible extension queue 1522. Compared 173072 event pairs, 523 based on Foata normal form. 74/9295 useless extension candidates. Maximal degree in co-relation 84693. Up to 1707 conditions per place. [2021-03-24 13:52:33,629 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 537 selfloop transitions, 524 changer transitions 1/1076 dead transitions. [2021-03-24 13:52:33,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 1076 transitions, 52704 flow [2021-03-24 13:52:33,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:52:33,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:52:33,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:52:33,630 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:52:33,630 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:52:33,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:52:33,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:52:33,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:52:33,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:33,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:33,631 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:33,631 INFO L185 Difference]: Start difference. First operand has 540 places, 1071 transitions, 50560 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:52:33,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 1076 transitions, 52704 flow [2021-03-24 13:52:38,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 1076 transitions, 51937 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-24 13:52:38,921 INFO L241 Difference]: Finished difference. Result has 544 places, 1070 transitions, 50782 flow [2021-03-24 13:52:38,921 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49803, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1071, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=524, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50782, PETRI_PLACES=544, PETRI_TRANSITIONS=1070} [2021-03-24 13:52:38,922 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 500 predicate places. [2021-03-24 13:52:38,922 INFO L480 AbstractCegarLoop]: Abstraction has has 544 places, 1070 transitions, 50782 flow [2021-03-24 13:52:38,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:38,922 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:52:38,922 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:52:38,922 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-03-24 13:52:38,922 INFO L428 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:52:38,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:52:38,922 INFO L82 PathProgramCache]: Analyzing trace with hash 545601504, now seen corresponding path program 100 times [2021-03-24 13:52:38,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:52:38,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303557516] [2021-03-24 13:52:38,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:52:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:52:38,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:38,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:52:38,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:38,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:52:38,933 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:52:38,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:52:38,952 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:52:38,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:52:38,962 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:52:38,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:52:38,976 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:52:38,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:52:38,994 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:52:38,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:52:39,029 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:52:39,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:52:39,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:52:39,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303557516] [2021-03-24 13:52:39,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:52:39,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:52:39,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870094063] [2021-03-24 13:52:39,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:52:39,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:52:39,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:52:39,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:52:39,053 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:52:39,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 1070 transitions, 50782 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:39,053 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:52:39,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:52:39,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:52:44,127 INFO L129 PetriNetUnfolder]: 523/9698 cut-off events. [2021-03-24 13:52:44,127 INFO L130 PetriNetUnfolder]: For 498591/512011 co-relation queries the response was YES. [2021-03-24 13:52:44,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85398 conditions, 9698 events. 523/9698 cut-off events. For 498591/512011 co-relation queries the response was YES. Maximal size of possible extension queue 1521. Compared 172954 event pairs, 523 based on Foata normal form. 74/9288 useless extension candidates. Maximal degree in co-relation 85225. Up to 1707 conditions per place. [2021-03-24 13:52:44,220 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 552 selfloop transitions, 513 changer transitions 2/1081 dead transitions. [2021-03-24 13:52:44,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 1081 transitions, 53178 flow [2021-03-24 13:52:44,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:52:44,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:52:44,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:52:44,221 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:52:44,221 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:52:44,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:52:44,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:52:44,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:52:44,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:44,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:44,222 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:44,222 INFO L185 Difference]: Start difference. First operand has 544 places, 1070 transitions, 50782 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:52:44,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 1081 transitions, 53178 flow [2021-03-24 13:52:49,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 1081 transitions, 52142 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 13:52:49,466 INFO L241 Difference]: Finished difference. Result has 547 places, 1074 transitions, 50999 flow [2021-03-24 13:52:49,467 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49756, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1070, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=507, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50999, PETRI_PLACES=547, PETRI_TRANSITIONS=1074} [2021-03-24 13:52:49,467 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 503 predicate places. [2021-03-24 13:52:49,467 INFO L480 AbstractCegarLoop]: Abstraction has has 547 places, 1074 transitions, 50999 flow [2021-03-24 13:52:49,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:49,467 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:52:49,467 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:52:49,467 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-03-24 13:52:49,467 INFO L428 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:52:49,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:52:49,467 INFO L82 PathProgramCache]: Analyzing trace with hash -2106915522, now seen corresponding path program 101 times [2021-03-24 13:52:49,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:52:49,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495781563] [2021-03-24 13:52:49,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:52:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:52:49,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:49,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:52:49,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:52:49,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:52:49,478 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:52:49,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:52:49,485 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:52:49,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:52:49,494 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:52:49,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:52:49,507 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:52:49,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:52:49,524 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:52:49,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:52:49,547 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:52:49,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:52:49,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:52:49,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495781563] [2021-03-24 13:52:49,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:52:49,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:52:49,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669298447] [2021-03-24 13:52:49,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:52:49,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:52:49,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:52:49,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:52:49,570 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:52:49,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 1074 transitions, 50999 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:49,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:52:49,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:52:49,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:52:54,712 INFO L129 PetriNetUnfolder]: 523/9691 cut-off events. [2021-03-24 13:52:54,713 INFO L130 PetriNetUnfolder]: For 501335/514755 co-relation queries the response was YES. [2021-03-24 13:52:54,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85382 conditions, 9691 events. 523/9691 cut-off events. For 501335/514755 co-relation queries the response was YES. Maximal size of possible extension queue 1520. Compared 172812 event pairs, 523 based on Foata normal form. 74/9276 useless extension candidates. Maximal degree in co-relation 85208. Up to 1707 conditions per place. [2021-03-24 13:52:54,815 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 551 selfloop transitions, 513 changer transitions 1/1079 dead transitions. [2021-03-24 13:52:54,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 1079 transitions, 53149 flow [2021-03-24 13:52:54,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:52:54,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:52:54,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:52:54,816 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:52:54,816 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:52:54,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:52:54,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:52:54,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:52:54,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:54,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:54,817 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:52:54,817 INFO L185 Difference]: Start difference. First operand has 547 places, 1074 transitions, 50999 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:52:54,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 1079 transitions, 53149 flow [2021-03-24 13:52:59,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 1079 transitions, 52225 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 13:53:00,024 INFO L241 Difference]: Finished difference. Result has 550 places, 1073 transitions, 51046 flow [2021-03-24 13:53:00,025 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=50085, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1074, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=513, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51046, PETRI_PLACES=550, PETRI_TRANSITIONS=1073} [2021-03-24 13:53:00,025 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 506 predicate places. [2021-03-24 13:53:00,025 INFO L480 AbstractCegarLoop]: Abstraction has has 550 places, 1073 transitions, 51046 flow [2021-03-24 13:53:00,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:00,025 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:53:00,025 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:53:00,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-03-24 13:53:00,025 INFO L428 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:53:00,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:53:00,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1997969798, now seen corresponding path program 102 times [2021-03-24 13:53:00,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:53:00,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860154430] [2021-03-24 13:53:00,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:53:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:53:00,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:00,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:53:00,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:00,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:53:00,036 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:53:00,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:53:00,043 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:53:00,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:53:00,052 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:53:00,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:53:00,065 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:53:00,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:53:00,082 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:53:00,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:53:00,106 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:53:00,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:53:00,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:53:00,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860154430] [2021-03-24 13:53:00,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:53:00,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:53:00,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968833166] [2021-03-24 13:53:00,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:53:00,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:53:00,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:53:00,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:53:00,130 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:53:00,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 1073 transitions, 51046 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:00,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:53:00,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:53:00,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:53:05,423 INFO L129 PetriNetUnfolder]: 523/9684 cut-off events. [2021-03-24 13:53:05,423 INFO L130 PetriNetUnfolder]: For 501280/514700 co-relation queries the response was YES. [2021-03-24 13:53:05,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85499 conditions, 9684 events. 523/9684 cut-off events. For 501280/514700 co-relation queries the response was YES. Maximal size of possible extension queue 1519. Compared 172646 event pairs, 523 based on Foata normal form. 74/9269 useless extension candidates. Maximal degree in co-relation 85325. Up to 1707 conditions per place. [2021-03-24 13:53:05,516 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 553 selfloop transitions, 509 changer transitions 2/1078 dead transitions. [2021-03-24 13:53:05,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 1078 transitions, 53194 flow [2021-03-24 13:53:05,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:53:05,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:53:05,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:53:05,517 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:53:05,517 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:53:05,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:53:05,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:53:05,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:53:05,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:05,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:05,518 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:05,519 INFO L185 Difference]: Start difference. First operand has 550 places, 1073 transitions, 51046 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:53:05,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 1078 transitions, 53194 flow [2021-03-24 13:53:10,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 1078 transitions, 52180 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-24 13:53:10,584 INFO L241 Difference]: Finished difference. Result has 552 places, 1071 transitions, 50947 flow [2021-03-24 13:53:10,585 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=50042, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1073, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=509, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50947, PETRI_PLACES=552, PETRI_TRANSITIONS=1071} [2021-03-24 13:53:10,585 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 508 predicate places. [2021-03-24 13:53:10,585 INFO L480 AbstractCegarLoop]: Abstraction has has 552 places, 1071 transitions, 50947 flow [2021-03-24 13:53:10,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:10,585 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:53:10,585 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:53:10,585 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-03-24 13:53:10,585 INFO L428 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:53:10,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:53:10,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1286616456, now seen corresponding path program 103 times [2021-03-24 13:53:10,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:53:10,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353990511] [2021-03-24 13:53:10,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:53:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:53:10,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:10,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:53:10,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:10,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:53:10,599 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:53:10,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:53:10,606 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:53:10,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:53:10,615 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:53:10,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:53:10,636 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:53:10,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:53:10,666 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:53:10,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:53:10,690 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:53:10,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:53:10,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:53:10,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353990511] [2021-03-24 13:53:10,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:53:10,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:53:10,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445851854] [2021-03-24 13:53:10,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:53:10,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:53:10,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:53:10,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:53:10,715 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:53:10,715 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 1071 transitions, 50947 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:10,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:53:10,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:53:10,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:53:16,011 INFO L129 PetriNetUnfolder]: 523/9675 cut-off events. [2021-03-24 13:53:16,011 INFO L130 PetriNetUnfolder]: For 500388/513803 co-relation queries the response was YES. [2021-03-24 13:53:16,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85420 conditions, 9675 events. 523/9675 cut-off events. For 500388/513803 co-relation queries the response was YES. Maximal size of possible extension queue 1517. Compared 172454 event pairs, 523 based on Foata normal form. 72/9258 useless extension candidates. Maximal degree in co-relation 85246. Up to 1707 conditions per place. [2021-03-24 13:53:16,117 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 542 selfloop transitions, 518 changer transitions 2/1076 dead transitions. [2021-03-24 13:53:16,117 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 1076 transitions, 53091 flow [2021-03-24 13:53:16,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:53:16,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:53:16,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:53:16,118 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:53:16,118 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:53:16,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:53:16,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:53:16,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:53:16,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:16,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:16,119 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:16,119 INFO L185 Difference]: Start difference. First operand has 552 places, 1071 transitions, 50947 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:53:16,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 1076 transitions, 53091 flow [2021-03-24 13:53:21,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 1076 transitions, 52424 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-03-24 13:53:21,414 INFO L241 Difference]: Finished difference. Result has 555 places, 1069 transitions, 51208 flow [2021-03-24 13:53:21,415 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=50290, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1071, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=518, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51208, PETRI_PLACES=555, PETRI_TRANSITIONS=1069} [2021-03-24 13:53:21,415 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 511 predicate places. [2021-03-24 13:53:21,415 INFO L480 AbstractCegarLoop]: Abstraction has has 555 places, 1069 transitions, 51208 flow [2021-03-24 13:53:21,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:21,415 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:53:21,415 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:53:21,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-03-24 13:53:21,415 INFO L428 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:53:21,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:53:21,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1454337536, now seen corresponding path program 104 times [2021-03-24 13:53:21,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:53:21,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177896106] [2021-03-24 13:53:21,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:53:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:53:21,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:21,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:53:21,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:21,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:53:21,427 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:53:21,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:53:21,433 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:53:21,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:53:21,443 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:53:21,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:53:21,465 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:53:21,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:53:21,482 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:53:21,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:53:21,506 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:53:21,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:53:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:53:21,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177896106] [2021-03-24 13:53:21,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:53:21,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:53:21,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006257821] [2021-03-24 13:53:21,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:53:21,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:53:21,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:53:21,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:53:21,530 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:53:21,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 1069 transitions, 51208 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:21,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:53:21,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:53:21,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:53:26,787 INFO L129 PetriNetUnfolder]: 523/9662 cut-off events. [2021-03-24 13:53:26,787 INFO L130 PetriNetUnfolder]: For 505101/518527 co-relation queries the response was YES. [2021-03-24 13:53:26,859 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85649 conditions, 9662 events. 523/9662 cut-off events. For 505101/518527 co-relation queries the response was YES. Maximal size of possible extension queue 1515. Compared 172180 event pairs, 523 based on Foata normal form. 74/9254 useless extension candidates. Maximal degree in co-relation 85475. Up to 1707 conditions per place. [2021-03-24 13:53:26,880 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 536 selfloop transitions, 522 changer transitions 2/1074 dead transitions. [2021-03-24 13:53:26,880 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 1074 transitions, 53348 flow [2021-03-24 13:53:26,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:53:26,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:53:26,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:53:26,881 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:53:26,881 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:53:26,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:53:26,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:53:26,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:53:26,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:26,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:26,882 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:26,882 INFO L185 Difference]: Start difference. First operand has 555 places, 1069 transitions, 51208 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:53:26,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 1074 transitions, 53348 flow [2021-03-24 13:53:31,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 1074 transitions, 51957 flow, removed 13 selfloop flow, removed 8 redundant places. [2021-03-24 13:53:31,943 INFO L241 Difference]: Finished difference. Result has 555 places, 1067 transitions, 50742 flow [2021-03-24 13:53:31,943 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49827, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1069, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=522, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50742, PETRI_PLACES=555, PETRI_TRANSITIONS=1067} [2021-03-24 13:53:31,943 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 511 predicate places. [2021-03-24 13:53:31,943 INFO L480 AbstractCegarLoop]: Abstraction has has 555 places, 1067 transitions, 50742 flow [2021-03-24 13:53:31,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:31,943 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:53:31,943 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:53:31,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-03-24 13:53:31,944 INFO L428 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:53:31,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:53:31,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1783847306, now seen corresponding path program 105 times [2021-03-24 13:53:31,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:53:31,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025025551] [2021-03-24 13:53:31,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:53:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:53:31,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:31,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:53:31,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:31,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:53:31,955 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:53:31,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:53:31,961 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:53:31,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:53:31,970 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:53:31,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:53:31,992 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:53:31,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:53:32,009 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:53:32,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:53:32,033 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:53:32,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:53:32,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:53:32,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025025551] [2021-03-24 13:53:32,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:53:32,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:53:32,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027979595] [2021-03-24 13:53:32,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:53:32,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:53:32,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:53:32,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:53:32,057 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:53:32,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 1067 transitions, 50742 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:32,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:53:32,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:53:32,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:53:37,259 INFO L129 PetriNetUnfolder]: 523/9654 cut-off events. [2021-03-24 13:53:37,259 INFO L130 PetriNetUnfolder]: For 498374/511794 co-relation queries the response was YES. [2021-03-24 13:53:37,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85252 conditions, 9654 events. 523/9654 cut-off events. For 498374/511794 co-relation queries the response was YES. Maximal size of possible extension queue 1513. Compared 172067 event pairs, 523 based on Foata normal form. 74/9246 useless extension candidates. Maximal degree in co-relation 85079. Up to 1707 conditions per place. [2021-03-24 13:53:37,357 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 535 selfloop transitions, 522 changer transitions 1/1072 dead transitions. [2021-03-24 13:53:37,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 1072 transitions, 52878 flow [2021-03-24 13:53:37,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:53:37,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:53:37,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:53:37,358 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:53:37,358 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:53:37,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:53:37,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:53:37,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:53:37,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:37,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:37,359 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:37,359 INFO L185 Difference]: Start difference. First operand has 555 places, 1067 transitions, 50742 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:53:37,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 1072 transitions, 52878 flow [2021-03-24 13:53:42,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 1072 transitions, 52085 flow, removed 19 selfloop flow, removed 4 redundant places. [2021-03-24 13:53:42,515 INFO L241 Difference]: Finished difference. Result has 559 places, 1066 transitions, 50931 flow [2021-03-24 13:53:42,515 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49959, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=522, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50931, PETRI_PLACES=559, PETRI_TRANSITIONS=1066} [2021-03-24 13:53:42,515 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 515 predicate places. [2021-03-24 13:53:42,516 INFO L480 AbstractCegarLoop]: Abstraction has has 559 places, 1066 transitions, 50931 flow [2021-03-24 13:53:42,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:42,516 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:53:42,516 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:53:42,516 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-03-24 13:53:42,516 INFO L428 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:53:42,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:53:42,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1290582502, now seen corresponding path program 106 times [2021-03-24 13:53:42,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:53:42,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718926476] [2021-03-24 13:53:42,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:53:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:53:42,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:42,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:53:42,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:42,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:53:42,527 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:53:42,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:53:42,534 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:53:42,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:53:42,543 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:53:42,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:53:42,564 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:53:42,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:53:42,592 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:53:42,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:53:42,617 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:53:42,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:53:42,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:53:42,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718926476] [2021-03-24 13:53:42,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:53:42,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:53:42,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699767385] [2021-03-24 13:53:42,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:53:42,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:53:42,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:53:42,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:53:42,642 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:53:42,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 1066 transitions, 50931 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:42,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:53:42,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:53:42,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:53:47,756 INFO L129 PetriNetUnfolder]: 523/9647 cut-off events. [2021-03-24 13:53:47,756 INFO L130 PetriNetUnfolder]: For 499161/512581 co-relation queries the response was YES. [2021-03-24 13:53:47,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85769 conditions, 9647 events. 523/9647 cut-off events. For 499161/512581 co-relation queries the response was YES. Maximal size of possible extension queue 1512. Compared 171840 event pairs, 523 based on Foata normal form. 74/9234 useless extension candidates. Maximal degree in co-relation 85596. Up to 1707 conditions per place. [2021-03-24 13:53:47,859 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 533 selfloop transitions, 522 changer transitions 2/1071 dead transitions. [2021-03-24 13:53:47,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 1071 transitions, 53065 flow [2021-03-24 13:53:47,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:53:47,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:53:47,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:53:47,860 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:53:47,860 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:53:47,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:53:47,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:53:47,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:53:47,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:47,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:47,861 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:47,861 INFO L185 Difference]: Start difference. First operand has 559 places, 1066 transitions, 50931 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:53:47,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 1071 transitions, 53065 flow [2021-03-24 13:53:53,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 1071 transitions, 52012 flow, removed 8 selfloop flow, removed 7 redundant places. [2021-03-24 13:53:53,054 INFO L241 Difference]: Finished difference. Result has 560 places, 1064 transitions, 50799 flow [2021-03-24 13:53:53,055 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49888, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1066, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=522, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50799, PETRI_PLACES=560, PETRI_TRANSITIONS=1064} [2021-03-24 13:53:53,055 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 516 predicate places. [2021-03-24 13:53:53,055 INFO L480 AbstractCegarLoop]: Abstraction has has 560 places, 1064 transitions, 50799 flow [2021-03-24 13:53:53,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:53,055 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:53:53,055 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:53:53,055 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-03-24 13:53:53,055 INFO L428 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:53:53,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:53:53,056 INFO L82 PathProgramCache]: Analyzing trace with hash 2113595394, now seen corresponding path program 107 times [2021-03-24 13:53:53,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:53:53,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692633615] [2021-03-24 13:53:53,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:53:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:53:53,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:53,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:53:53,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:53:53,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:53:53,067 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:53:53,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:53:53,073 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:53:53,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:53:53,082 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:53:53,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:53:53,096 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:53:53,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:53:53,113 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:53:53,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:53:53,137 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:53:53,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:53:53,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:53:53,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692633615] [2021-03-24 13:53:53,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:53:53,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:53:53,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565223295] [2021-03-24 13:53:53,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:53:53,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:53:53,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:53:53,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:53:53,161 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:53:53,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 1064 transitions, 50799 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:53,161 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:53:53,161 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:53:53,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:53:58,180 INFO L129 PetriNetUnfolder]: 523/9639 cut-off events. [2021-03-24 13:53:58,180 INFO L130 PetriNetUnfolder]: For 498042/511462 co-relation queries the response was YES. [2021-03-24 13:53:58,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85714 conditions, 9639 events. 523/9639 cut-off events. For 498042/511462 co-relation queries the response was YES. Maximal size of possible extension queue 1510. Compared 171786 event pairs, 523 based on Foata normal form. 74/9226 useless extension candidates. Maximal degree in co-relation 85542. Up to 1707 conditions per place. [2021-03-24 13:53:58,270 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 526 selfloop transitions, 528 changer transitions 1/1069 dead transitions. [2021-03-24 13:53:58,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 1069 transitions, 52929 flow [2021-03-24 13:53:58,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:53:58,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:53:58,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:53:58,271 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:53:58,271 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:53:58,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:53:58,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:53:58,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:53:58,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:58,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:58,272 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:53:58,272 INFO L185 Difference]: Start difference. First operand has 560 places, 1064 transitions, 50799 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:53:58,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 1069 transitions, 52929 flow [2021-03-24 13:54:03,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 1069 transitions, 51887 flow, removed 19 selfloop flow, removed 6 redundant places. [2021-03-24 13:54:03,242 INFO L241 Difference]: Finished difference. Result has 562 places, 1063 transitions, 50750 flow [2021-03-24 13:54:03,242 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49767, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1064, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=528, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50750, PETRI_PLACES=562, PETRI_TRANSITIONS=1063} [2021-03-24 13:54:03,242 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 518 predicate places. [2021-03-24 13:54:03,242 INFO L480 AbstractCegarLoop]: Abstraction has has 562 places, 1063 transitions, 50750 flow [2021-03-24 13:54:03,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:03,242 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:54:03,243 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:54:03,243 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-03-24 13:54:03,243 INFO L428 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:54:03,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:54:03,243 INFO L82 PathProgramCache]: Analyzing trace with hash -420133374, now seen corresponding path program 108 times [2021-03-24 13:54:03,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:54:03,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73779127] [2021-03-24 13:54:03,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:54:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:54:03,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:54:03,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:54:03,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:54:03,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:54:03,254 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:54:03,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:54:03,261 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:54:03,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:54:03,270 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:54:03,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:54:03,292 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:54:03,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:54:03,353 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:54:03,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:54:03,377 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:54:03,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:54:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:54:03,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73779127] [2021-03-24 13:54:03,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:54:03,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:54:03,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130662836] [2021-03-24 13:54:03,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:54:03,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:54:03,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:54:03,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:54:03,400 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:54:03,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 1063 transitions, 50750 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:03,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:54:03,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:54:03,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:54:08,433 INFO L129 PetriNetUnfolder]: 523/9634 cut-off events. [2021-03-24 13:54:08,433 INFO L130 PetriNetUnfolder]: For 493974/507389 co-relation queries the response was YES. [2021-03-24 13:54:08,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85757 conditions, 9634 events. 523/9634 cut-off events. For 493974/507389 co-relation queries the response was YES. Maximal size of possible extension queue 1509. Compared 171640 event pairs, 523 based on Foata normal form. 72/9219 useless extension candidates. Maximal degree in co-relation 85586. Up to 1707 conditions per place. [2021-03-24 13:54:08,528 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 532 selfloop transitions, 520 changer transitions 2/1068 dead transitions. [2021-03-24 13:54:08,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 1068 transitions, 52878 flow [2021-03-24 13:54:08,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:54:08,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:54:08,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:54:08,529 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:54:08,529 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:54:08,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:54:08,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:54:08,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:54:08,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:08,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:08,530 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:08,530 INFO L185 Difference]: Start difference. First operand has 562 places, 1063 transitions, 50750 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:54:08,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 1068 transitions, 52878 flow [2021-03-24 13:54:13,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 1068 transitions, 52352 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-03-24 13:54:13,732 INFO L241 Difference]: Finished difference. Result has 566 places, 1061 transitions, 51137 flow [2021-03-24 13:54:13,732 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=50234, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1063, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=520, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51137, PETRI_PLACES=566, PETRI_TRANSITIONS=1061} [2021-03-24 13:54:13,732 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 522 predicate places. [2021-03-24 13:54:13,732 INFO L480 AbstractCegarLoop]: Abstraction has has 566 places, 1061 transitions, 51137 flow [2021-03-24 13:54:13,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:13,732 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:54:13,732 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:54:13,732 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-03-24 13:54:13,732 INFO L428 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:54:13,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:54:13,733 INFO L82 PathProgramCache]: Analyzing trace with hash 555544842, now seen corresponding path program 109 times [2021-03-24 13:54:13,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:54:13,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247785833] [2021-03-24 13:54:13,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:54:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:54:13,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:54:13,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:54:13,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:54:13,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:54:13,744 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:54:13,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:54:13,750 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:54:13,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:54:13,759 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:54:13,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:54:13,773 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:54:13,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:54:13,790 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:54:13,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:54:13,814 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:54:13,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:54:13,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:54:13,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247785833] [2021-03-24 13:54:13,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:54:13,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:54:13,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938405372] [2021-03-24 13:54:13,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:54:13,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:54:13,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:54:13,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:54:13,838 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:54:13,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 1061 transitions, 51137 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:13,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:54:13,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:54:13,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:54:15,574 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-24 13:54:19,066 INFO L129 PetriNetUnfolder]: 523/9626 cut-off events. [2021-03-24 13:54:19,067 INFO L130 PetriNetUnfolder]: For 500390/513816 co-relation queries the response was YES. [2021-03-24 13:54:19,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86474 conditions, 9626 events. 523/9626 cut-off events. For 500390/513816 co-relation queries the response was YES. Maximal size of possible extension queue 1508. Compared 171423 event pairs, 523 based on Foata normal form. 74/9213 useless extension candidates. Maximal degree in co-relation 86303. Up to 1707 conditions per place. [2021-03-24 13:54:19,155 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 534 selfloop transitions, 517 changer transitions 1/1066 dead transitions. [2021-03-24 13:54:19,156 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 1066 transitions, 53261 flow [2021-03-24 13:54:19,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:54:19,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:54:19,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:54:19,156 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:54:19,156 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:54:19,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:54:19,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:54:19,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:54:19,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:19,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:19,157 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:19,157 INFO L185 Difference]: Start difference. First operand has 566 places, 1061 transitions, 51137 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:54:19,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 1066 transitions, 53261 flow [2021-03-24 13:54:24,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 1066 transitions, 51887 flow, removed 6 selfloop flow, removed 7 redundant places. [2021-03-24 13:54:24,456 INFO L241 Difference]: Finished difference. Result has 567 places, 1060 transitions, 50732 flow [2021-03-24 13:54:24,457 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49773, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1061, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=517, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50732, PETRI_PLACES=567, PETRI_TRANSITIONS=1060} [2021-03-24 13:54:24,457 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 523 predicate places. [2021-03-24 13:54:24,457 INFO L480 AbstractCegarLoop]: Abstraction has has 567 places, 1060 transitions, 50732 flow [2021-03-24 13:54:24,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:24,457 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:54:24,457 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:54:24,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-03-24 13:54:24,457 INFO L428 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:54:24,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:54:24,457 INFO L82 PathProgramCache]: Analyzing trace with hash -403407384, now seen corresponding path program 110 times [2021-03-24 13:54:24,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:54:24,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087594274] [2021-03-24 13:54:24,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:54:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:54:24,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:54:24,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:54:24,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:54:24,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:54:24,468 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:54:24,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:54:24,475 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:54:24,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:54:24,485 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:54:24,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:54:24,498 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:54:24,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:54:24,527 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:54:24,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:54:24,551 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:54:24,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:54:24,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:54:24,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087594274] [2021-03-24 13:54:24,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:54:24,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:54:24,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159970822] [2021-03-24 13:54:24,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:54:24,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:54:24,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:54:24,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:54:24,577 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:54:24,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 1060 transitions, 50732 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:24,577 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:54:24,577 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:54:24,577 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:54:29,700 INFO L129 PetriNetUnfolder]: 523/9620 cut-off events. [2021-03-24 13:54:29,700 INFO L130 PetriNetUnfolder]: For 494074/507494 co-relation queries the response was YES. [2021-03-24 13:54:29,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86087 conditions, 9620 events. 523/9620 cut-off events. For 494074/507494 co-relation queries the response was YES. Maximal size of possible extension queue 1507. Compared 171350 event pairs, 523 based on Foata normal form. 74/9212 useless extension candidates. Maximal degree in co-relation 85916. Up to 1707 conditions per place. [2021-03-24 13:54:29,794 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 523 selfloop transitions, 527 changer transitions 1/1065 dead transitions. [2021-03-24 13:54:29,794 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 1065 transitions, 52854 flow [2021-03-24 13:54:29,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:54:29,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:54:29,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:54:29,795 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:54:29,795 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:54:29,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:54:29,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:54:29,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:54:29,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:29,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:29,796 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:29,796 INFO L185 Difference]: Start difference. First operand has 567 places, 1060 transitions, 50732 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:54:29,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 1065 transitions, 52854 flow [2021-03-24 13:54:35,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 1065 transitions, 51887 flow, removed 16 selfloop flow, removed 6 redundant places. [2021-03-24 13:54:35,040 INFO L241 Difference]: Finished difference. Result has 569 places, 1059 transitions, 50750 flow [2021-03-24 13:54:35,040 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49775, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=527, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50750, PETRI_PLACES=569, PETRI_TRANSITIONS=1059} [2021-03-24 13:54:35,041 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 525 predicate places. [2021-03-24 13:54:35,041 INFO L480 AbstractCegarLoop]: Abstraction has has 569 places, 1059 transitions, 50750 flow [2021-03-24 13:54:35,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:35,041 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:54:35,041 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:54:35,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-03-24 13:54:35,041 INFO L428 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:54:35,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:54:35,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1056265780, now seen corresponding path program 111 times [2021-03-24 13:54:35,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:54:35,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770195028] [2021-03-24 13:54:35,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:54:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:54:35,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:54:35,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:54:35,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:54:35,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:54:35,053 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:54:35,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:54:35,059 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:54:35,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:54:35,069 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:54:35,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:54:35,083 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:54:35,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:54:35,101 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:54:35,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:54:35,124 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:54:35,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:54:35,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:54:35,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770195028] [2021-03-24 13:54:35,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:54:35,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:54:35,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615654692] [2021-03-24 13:54:35,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:54:35,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:54:35,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:54:35,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:54:35,148 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:54:35,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 1059 transitions, 50750 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:35,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:54:35,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:54:35,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:54:40,323 INFO L129 PetriNetUnfolder]: 523/9614 cut-off events. [2021-03-24 13:54:40,323 INFO L130 PetriNetUnfolder]: For 492792/506212 co-relation queries the response was YES. [2021-03-24 13:54:40,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86153 conditions, 9614 events. 523/9614 cut-off events. For 492792/506212 co-relation queries the response was YES. Maximal size of possible extension queue 1506. Compared 171210 event pairs, 523 based on Foata normal form. 74/9206 useless extension candidates. Maximal degree in co-relation 85983. Up to 1707 conditions per place. [2021-03-24 13:54:40,426 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 533 selfloop transitions, 515 changer transitions 2/1064 dead transitions. [2021-03-24 13:54:40,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 1064 transitions, 52870 flow [2021-03-24 13:54:40,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:54:40,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:54:40,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:54:40,427 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:54:40,427 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:54:40,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:54:40,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:54:40,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:54:40,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:40,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:40,428 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:40,428 INFO L185 Difference]: Start difference. First operand has 569 places, 1059 transitions, 50750 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:54:40,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 1064 transitions, 52870 flow [2021-03-24 13:54:45,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 1064 transitions, 51669 flow, removed 18 selfloop flow, removed 7 redundant places. [2021-03-24 13:54:45,602 INFO L241 Difference]: Finished difference. Result has 570 places, 1057 transitions, 50449 flow [2021-03-24 13:54:45,603 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49559, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1059, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=515, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50449, PETRI_PLACES=570, PETRI_TRANSITIONS=1057} [2021-03-24 13:54:45,603 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 526 predicate places. [2021-03-24 13:54:45,603 INFO L480 AbstractCegarLoop]: Abstraction has has 570 places, 1057 transitions, 50449 flow [2021-03-24 13:54:45,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:45,603 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:54:45,603 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:54:45,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-03-24 13:54:45,603 INFO L428 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:54:45,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:54:45,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1741496410, now seen corresponding path program 112 times [2021-03-24 13:54:45,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:54:45,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914564760] [2021-03-24 13:54:45,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:54:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:54:45,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:54:45,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:54:45,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:54:45,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:54:45,616 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:54:45,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:54:45,623 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:54:45,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:54:45,632 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 13:54:45,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 13:54:45,646 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 13:54:45,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 13:54:45,675 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:54:45,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:54:45,700 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:54:45,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:54:45,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:54:45,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914564760] [2021-03-24 13:54:45,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:54:45,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:54:45,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8712263] [2021-03-24 13:54:45,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:54:45,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:54:45,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:54:45,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:54:45,725 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:54:45,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 1057 transitions, 50449 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:45,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:54:45,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:54:45,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:54:50,675 INFO L129 PetriNetUnfolder]: 523/9607 cut-off events. [2021-03-24 13:54:50,675 INFO L130 PetriNetUnfolder]: For 488721/502141 co-relation queries the response was YES. [2021-03-24 13:54:50,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85762 conditions, 9607 events. 523/9607 cut-off events. For 488721/502141 co-relation queries the response was YES. Maximal size of possible extension queue 1504. Compared 171055 event pairs, 523 based on Foata normal form. 74/9195 useless extension candidates. Maximal degree in co-relation 85593. Up to 1707 conditions per place. [2021-03-24 13:54:50,768 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 522 selfloop transitions, 524 changer transitions 2/1062 dead transitions. [2021-03-24 13:54:50,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 1062 transitions, 52565 flow [2021-03-24 13:54:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:54:50,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:54:50,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:54:50,769 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:54:50,769 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:54:50,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:54:50,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:54:50,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:54:50,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:50,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:50,771 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:50,771 INFO L185 Difference]: Start difference. First operand has 570 places, 1057 transitions, 50449 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:54:50,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 1062 transitions, 52565 flow [2021-03-24 13:54:55,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 1062 transitions, 51541 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 13:54:55,822 INFO L241 Difference]: Finished difference. Result has 572 places, 1055 transitions, 50357 flow [2021-03-24 13:54:55,823 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49435, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1057, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=524, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50357, PETRI_PLACES=572, PETRI_TRANSITIONS=1055} [2021-03-24 13:54:55,823 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 528 predicate places. [2021-03-24 13:54:55,823 INFO L480 AbstractCegarLoop]: Abstraction has has 572 places, 1055 transitions, 50357 flow [2021-03-24 13:54:55,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:55,823 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:54:55,823 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:54:55,823 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-03-24 13:54:55,823 INFO L428 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:54:55,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:54:55,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1878957672, now seen corresponding path program 113 times [2021-03-24 13:54:55,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:54:55,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607472553] [2021-03-24 13:54:55,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:54:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:54:55,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:54:55,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:54:55,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:54:55,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:54:55,835 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:54:55,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:54:55,841 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:54:55,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:54:55,851 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:54:55,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:54:55,864 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:54:55,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:54:55,882 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 13:54:55,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 13:54:55,906 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:54:55,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:54:55,930 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 13:54:55,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607472553] [2021-03-24 13:54:55,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:54:55,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:54:55,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126930190] [2021-03-24 13:54:55,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:54:55,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:54:55,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:54:55,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:54:55,931 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:54:55,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 1055 transitions, 50357 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:54:55,931 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:54:55,931 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:54:55,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:55:00,843 INFO L129 PetriNetUnfolder]: 523/9591 cut-off events. [2021-03-24 13:55:00,843 INFO L130 PetriNetUnfolder]: For 486083/499498 co-relation queries the response was YES. [2021-03-24 13:55:00,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85473 conditions, 9591 events. 523/9591 cut-off events. For 486083/499498 co-relation queries the response was YES. Maximal size of possible extension queue 1502. Compared 170634 event pairs, 523 based on Foata normal form. 72/9179 useless extension candidates. Maximal degree in co-relation 85304. Up to 1707 conditions per place. [2021-03-24 13:55:00,932 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 523 selfloop transitions, 521 changer transitions 2/1060 dead transitions. [2021-03-24 13:55:00,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 1060 transitions, 52469 flow [2021-03-24 13:55:00,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:55:00,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:55:00,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:55:00,933 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:55:00,933 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:55:00,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:55:00,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:55:00,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:55:00,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:00,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:00,934 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:00,934 INFO L185 Difference]: Start difference. First operand has 572 places, 1055 transitions, 50357 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:55:00,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 1060 transitions, 52469 flow [2021-03-24 13:55:06,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 1060 transitions, 51438 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 13:55:06,284 INFO L241 Difference]: Finished difference. Result has 574 places, 1053 transitions, 50234 flow [2021-03-24 13:55:06,285 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49336, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1055, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=521, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50234, PETRI_PLACES=574, PETRI_TRANSITIONS=1053} [2021-03-24 13:55:06,285 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 530 predicate places. [2021-03-24 13:55:06,285 INFO L480 AbstractCegarLoop]: Abstraction has has 574 places, 1053 transitions, 50234 flow [2021-03-24 13:55:06,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:06,285 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:55:06,285 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:55:06,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-03-24 13:55:06,285 INFO L428 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:55:06,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:55:06,285 INFO L82 PathProgramCache]: Analyzing trace with hash -939411744, now seen corresponding path program 114 times [2021-03-24 13:55:06,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:55:06,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038714286] [2021-03-24 13:55:06,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:55:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:55:06,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:55:06,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:55:06,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:55:06,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:55:06,297 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:55:06,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:55:06,304 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:55:06,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:55:06,314 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:55:06,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:55:06,389 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:55:06,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:55:06,410 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:55:06,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:55:06,437 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:55:06,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:55:06,462 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 13:55:06,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038714286] [2021-03-24 13:55:06,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:55:06,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:55:06,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368743196] [2021-03-24 13:55:06,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:55:06,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:55:06,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:55:06,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:55:06,463 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:55:06,464 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 1053 transitions, 50234 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:06,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:55:06,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:55:06,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:55:11,494 INFO L129 PetriNetUnfolder]: 523/9585 cut-off events. [2021-03-24 13:55:11,494 INFO L130 PetriNetUnfolder]: For 485573/498988 co-relation queries the response was YES. [2021-03-24 13:55:11,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85426 conditions, 9585 events. 523/9585 cut-off events. For 485573/498988 co-relation queries the response was YES. Maximal size of possible extension queue 1501. Compared 170545 event pairs, 523 based on Foata normal form. 72/9174 useless extension candidates. Maximal degree in co-relation 85257. Up to 1707 conditions per place. [2021-03-24 13:55:11,593 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 524 selfloop transitions, 518 changer transitions 2/1058 dead transitions. [2021-03-24 13:55:11,593 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 1058 transitions, 52342 flow [2021-03-24 13:55:11,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:55:11,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:55:11,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:55:11,594 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:55:11,594 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:55:11,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:55:11,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:55:11,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:55:11,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:11,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:11,595 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:11,595 INFO L185 Difference]: Start difference. First operand has 574 places, 1053 transitions, 50234 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:55:11,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 1058 transitions, 52342 flow [2021-03-24 13:55:16,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 1058 transitions, 51327 flow, removed 15 selfloop flow, removed 6 redundant places. [2021-03-24 13:55:16,893 INFO L241 Difference]: Finished difference. Result has 576 places, 1051 transitions, 50132 flow [2021-03-24 13:55:16,894 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49229, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1053, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=518, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50132, PETRI_PLACES=576, PETRI_TRANSITIONS=1051} [2021-03-24 13:55:16,894 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 532 predicate places. [2021-03-24 13:55:16,894 INFO L480 AbstractCegarLoop]: Abstraction has has 576 places, 1051 transitions, 50132 flow [2021-03-24 13:55:16,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:16,894 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:55:16,894 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:55:16,894 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-03-24 13:55:16,894 INFO L428 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:55:16,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:55:16,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1331962708, now seen corresponding path program 115 times [2021-03-24 13:55:16,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:55:16,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203608987] [2021-03-24 13:55:16,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:55:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:55:16,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:55:16,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:55:16,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:55:16,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:55:16,906 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:55:16,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:55:16,912 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:55:16,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:55:16,922 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:55:16,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:55:16,934 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:55:16,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:55:16,952 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:55:16,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:55:16,976 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:55:16,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:55:17,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:55:17,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203608987] [2021-03-24 13:55:17,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:55:17,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:55:17,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326685] [2021-03-24 13:55:17,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:55:17,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:55:17,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:55:17,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:55:17,001 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:55:17,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 1051 transitions, 50132 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:17,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:55:17,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:55:17,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:55:21,961 INFO L129 PetriNetUnfolder]: 523/9576 cut-off events. [2021-03-24 13:55:21,961 INFO L130 PetriNetUnfolder]: For 482287/495707 co-relation queries the response was YES. [2021-03-24 13:55:22,036 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85426 conditions, 9576 events. 523/9576 cut-off events. For 482287/495707 co-relation queries the response was YES. Maximal size of possible extension queue 1500. Compared 170320 event pairs, 523 based on Foata normal form. 74/9171 useless extension candidates. Maximal degree in co-relation 85258. Up to 1745 conditions per place. [2021-03-24 13:55:22,060 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 556 selfloop transitions, 539 changer transitions 1/1110 dead transitions. [2021-03-24 13:55:22,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 1110 transitions, 54915 flow [2021-03-24 13:55:22,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:55:22,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:55:22,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:55:22,061 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:55:22,061 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:55:22,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:55:22,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:55:22,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:55:22,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:22,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:22,062 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:22,062 INFO L185 Difference]: Start difference. First operand has 576 places, 1051 transitions, 50132 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:55:22,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 1110 transitions, 54915 flow [2021-03-24 13:55:27,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 1110 transitions, 53985 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 13:55:27,283 INFO L241 Difference]: Finished difference. Result has 580 places, 1070 transitions, 51488 flow [2021-03-24 13:55:27,284 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49212, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1051, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=519, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51488, PETRI_PLACES=580, PETRI_TRANSITIONS=1070} [2021-03-24 13:55:27,284 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 536 predicate places. [2021-03-24 13:55:27,284 INFO L480 AbstractCegarLoop]: Abstraction has has 580 places, 1070 transitions, 51488 flow [2021-03-24 13:55:27,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:27,284 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:55:27,284 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:55:27,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-03-24 13:55:27,284 INFO L428 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:55:27,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:55:27,284 INFO L82 PathProgramCache]: Analyzing trace with hash -377779100, now seen corresponding path program 116 times [2021-03-24 13:55:27,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:55:27,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056183866] [2021-03-24 13:55:27,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:55:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:55:27,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:55:27,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:55:27,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:55:27,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:55:27,295 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:55:27,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:55:27,302 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:55:27,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:55:27,311 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:55:27,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:55:27,324 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 13:55:27,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 13:55:27,342 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:55:27,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:55:27,366 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:55:27,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:55:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:55:27,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056183866] [2021-03-24 13:55:27,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:55:27,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:55:27,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197834907] [2021-03-24 13:55:27,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:55:27,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:55:27,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:55:27,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:55:27,391 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:55:27,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 1070 transitions, 51488 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:27,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:55:27,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:55:27,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:55:32,412 INFO L129 PetriNetUnfolder]: 523/9571 cut-off events. [2021-03-24 13:55:32,412 INFO L130 PetriNetUnfolder]: For 486369/499927 co-relation queries the response was YES. [2021-03-24 13:55:32,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85557 conditions, 9571 events. 523/9571 cut-off events. For 486369/499927 co-relation queries the response was YES. Maximal size of possible extension queue 1499. Compared 170144 event pairs, 523 based on Foata normal form. 74/9151 useless extension candidates. Maximal degree in co-relation 85388. Up to 1745 conditions per place. [2021-03-24 13:55:32,506 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 557 selfloop transitions, 536 changer transitions 2/1109 dead transitions. [2021-03-24 13:55:32,506 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 1109 transitions, 55150 flow [2021-03-24 13:55:32,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:55:32,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:55:32,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:55:32,507 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:55:32,507 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:55:32,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:55:32,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:55:32,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:55:32,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:32,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:32,508 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:32,508 INFO L185 Difference]: Start difference. First operand has 580 places, 1070 transitions, 51488 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:55:32,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 1109 transitions, 55150 flow [2021-03-24 13:55:37,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 1109 transitions, 53643 flow, removed 37 selfloop flow, removed 7 redundant places. [2021-03-24 13:55:37,356 INFO L241 Difference]: Finished difference. Result has 581 places, 1068 transitions, 50947 flow [2021-03-24 13:55:37,356 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49991, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1070, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=536, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50947, PETRI_PLACES=581, PETRI_TRANSITIONS=1068} [2021-03-24 13:55:37,356 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 537 predicate places. [2021-03-24 13:55:37,356 INFO L480 AbstractCegarLoop]: Abstraction has has 581 places, 1068 transitions, 50947 flow [2021-03-24 13:55:37,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:37,356 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:55:37,356 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:55:37,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-03-24 13:55:37,356 INFO L428 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:55:37,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:55:37,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1052411816, now seen corresponding path program 117 times [2021-03-24 13:55:37,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:55:37,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18437107] [2021-03-24 13:55:37,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:55:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:55:37,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:55:37,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:55:37,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:55:37,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:55:37,368 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:55:37,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:55:37,374 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:55:37,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:55:37,383 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:55:37,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:55:37,396 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 13:55:37,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:55:37,426 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:55:37,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:55:37,450 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:55:37,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:55:37,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:55:37,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18437107] [2021-03-24 13:55:37,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:55:37,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:55:37,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162455445] [2021-03-24 13:55:37,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:55:37,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:55:37,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:55:37,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:55:37,475 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:55:37,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 1068 transitions, 50947 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:37,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:55:37,476 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:55:37,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:55:42,561 INFO L129 PetriNetUnfolder]: 523/9561 cut-off events. [2021-03-24 13:55:42,561 INFO L130 PetriNetUnfolder]: For 478735/492149 co-relation queries the response was YES. [2021-03-24 13:55:42,642 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85102 conditions, 9561 events. 523/9561 cut-off events. For 478735/492149 co-relation queries the response was YES. Maximal size of possible extension queue 1497. Compared 170051 event pairs, 523 based on Foata normal form. 74/9162 useless extension candidates. Maximal degree in co-relation 84933. Up to 1745 conditions per place. [2021-03-24 13:55:42,666 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 581 selfloop transitions, 511 changer transitions 1/1107 dead transitions. [2021-03-24 13:55:42,666 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 1107 transitions, 54605 flow [2021-03-24 13:55:42,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:55:42,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:55:42,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:55:42,667 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:55:42,667 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:55:42,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:55:42,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:55:42,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:55:42,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:42,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:42,668 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:42,668 INFO L185 Difference]: Start difference. First operand has 581 places, 1068 transitions, 50947 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:55:42,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 1107 transitions, 54605 flow [2021-03-24 13:55:47,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 1107 transitions, 53525 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-24 13:55:47,826 INFO L241 Difference]: Finished difference. Result has 582 places, 1067 transitions, 50830 flow [2021-03-24 13:55:47,826 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49877, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1068, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=511, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50830, PETRI_PLACES=582, PETRI_TRANSITIONS=1067} [2021-03-24 13:55:47,827 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 538 predicate places. [2021-03-24 13:55:47,827 INFO L480 AbstractCegarLoop]: Abstraction has has 582 places, 1067 transitions, 50830 flow [2021-03-24 13:55:47,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:47,827 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:55:47,827 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:55:47,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-03-24 13:55:47,827 INFO L428 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:55:47,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:55:47,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1020902504, now seen corresponding path program 118 times [2021-03-24 13:55:47,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:55:47,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429342712] [2021-03-24 13:55:47,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:55:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:55:47,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:55:47,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:55:47,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:55:47,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:55:47,841 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:55:47,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:55:47,848 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:55:47,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:55:47,862 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:55:47,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:55:47,903 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 13:55:47,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 13:55:47,924 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:55:47,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:55:47,949 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:55:47,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:55:47,973 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 13:55:47,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429342712] [2021-03-24 13:55:47,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:55:47,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:55:47,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844756654] [2021-03-24 13:55:47,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:55:47,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:55:47,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:55:47,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:55:47,975 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:55:47,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 1067 transitions, 50830 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:47,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:55:47,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:55:47,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:55:53,522 INFO L129 PetriNetUnfolder]: 523/9554 cut-off events. [2021-03-24 13:55:53,522 INFO L130 PetriNetUnfolder]: For 478122/491644 co-relation queries the response was YES. [2021-03-24 13:55:53,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85091 conditions, 9554 events. 523/9554 cut-off events. For 478122/491644 co-relation queries the response was YES. Maximal size of possible extension queue 1496. Compared 169814 event pairs, 523 based on Foata normal form. 74/9132 useless extension candidates. Maximal degree in co-relation 84923. Up to 1745 conditions per place. [2021-03-24 13:55:53,620 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 579 selfloop transitions, 512 changer transitions 1/1106 dead transitions. [2021-03-24 13:55:53,621 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 1106 transitions, 54486 flow [2021-03-24 13:55:53,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:55:53,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:55:53,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:55:53,621 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:55:53,621 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:55:53,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:55:53,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:55:53,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:55:53,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:53,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:53,622 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:53,622 INFO L185 Difference]: Start difference. First operand has 582 places, 1067 transitions, 50830 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:55:53,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 1106 transitions, 54486 flow [2021-03-24 13:55:59,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 1106 transitions, 53606 flow, removed 11 selfloop flow, removed 6 redundant places. [2021-03-24 13:55:59,384 INFO L241 Difference]: Finished difference. Result has 585 places, 1076 transitions, 51469 flow [2021-03-24 13:55:59,385 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49960, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=502, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51469, PETRI_PLACES=585, PETRI_TRANSITIONS=1076} [2021-03-24 13:55:59,385 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 541 predicate places. [2021-03-24 13:55:59,385 INFO L480 AbstractCegarLoop]: Abstraction has has 585 places, 1076 transitions, 51469 flow [2021-03-24 13:55:59,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:59,385 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:55:59,385 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:55:59,385 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-03-24 13:55:59,385 INFO L428 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 13:55:59,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:55:59,385 INFO L82 PathProgramCache]: Analyzing trace with hash -873622262, now seen corresponding path program 119 times [2021-03-24 13:55:59,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:55:59,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028278121] [2021-03-24 13:55:59,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:55:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:55:59,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:55:59,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:55:59,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:55:59,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:55:59,398 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 13:55:59,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:55:59,404 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 13:55:59,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 13:55:59,414 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 13:55:59,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 13:55:59,427 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 13:55:59,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 13:55:59,456 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 13:55:59,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 13:55:59,481 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 13:55:59,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 13:55:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:55:59,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028278121] [2021-03-24 13:55:59,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:55:59,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:55:59,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505820281] [2021-03-24 13:55:59,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:55:59,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:55:59,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:55:59,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:55:59,506 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 13:55:59,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 1076 transitions, 51469 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:55:59,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:55:59,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 13:55:59,507 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:56:05,029 INFO L129 PetriNetUnfolder]: 523/9548 cut-off events. [2021-03-24 13:56:05,029 INFO L130 PetriNetUnfolder]: For 477102/488043 co-relation queries the response was YES. [2021-03-24 13:56:05,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85579 conditions, 9548 events. 523/9548 cut-off events. For 477102/488043 co-relation queries the response was YES. Maximal size of possible extension queue 1495. Compared 169765 event pairs, 523 based on Foata normal form. 72/9139 useless extension candidates. Maximal degree in co-relation 85412. Up to 1745 conditions per place. [2021-03-24 13:56:05,135 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 563 selfloop transitions, 527 changer transitions 1/1105 dead transitions. [2021-03-24 13:56:05,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 1105 transitions, 54649 flow [2021-03-24 13:56:05,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:56:05,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:56:05,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 13:56:05,136 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 13:56:05,136 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 13:56:05,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 13:56:05,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:56:05,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 13:56:05,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:56:05,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:56:05,140 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:56:05,140 INFO L185 Difference]: Start difference. First operand has 585 places, 1076 transitions, 51469 flow. Second operand 9 states and 674 transitions. [2021-03-24 13:56:05,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 1105 transitions, 54649 flow Received shutdown request... [2021-03-24 13:56:09,450 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-03-24 13:56:09,450 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-24 13:56:09,462 WARN L224 ceAbstractionStarter]: Timeout [2021-03-24 13:56:09,462 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 01:56:09 BasicIcfg [2021-03-24 13:56:09,462 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 13:56:09,463 INFO L168 Benchmark]: Toolchain (without parser) took 843893.41 ms. Allocated memory was 377.5 MB in the beginning and 14.1 GB in the end (delta: 13.8 GB). Free memory was 357.8 MB in the beginning and 10.5 GB in the end (delta: -10.2 GB). Peak memory consumption was 4.2 GB. Max. memory is 16.0 GB. [2021-03-24 13:56:09,463 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 377.5 MB. Free memory was 358.9 MB in the beginning and 358.8 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:56:09,463 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.93 ms. Allocated memory is still 377.5 MB. Free memory was 357.7 MB in the beginning and 356.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 13:56:09,463 INFO L168 Benchmark]: Boogie Preprocessor took 14.92 ms. Allocated memory is still 377.5 MB. Free memory was 356.2 MB in the beginning and 355.3 MB in the end (delta: 891.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:56:09,463 INFO L168 Benchmark]: RCFGBuilder took 235.46 ms. Allocated memory is still 377.5 MB. Free memory was 355.3 MB in the beginning and 343.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-24 13:56:09,463 INFO L168 Benchmark]: TraceAbstraction took 843617.59 ms. Allocated memory was 377.5 MB in the beginning and 14.1 GB in the end (delta: 13.8 GB). Free memory was 343.3 MB in the beginning and 10.5 GB in the end (delta: -10.2 GB). Peak memory consumption was 4.2 GB. Max. memory is 16.0 GB. [2021-03-24 13:56:09,463 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 377.5 MB. Free memory was 358.9 MB in the beginning and 358.8 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 20.93 ms. Allocated memory is still 377.5 MB. Free memory was 357.7 MB in the beginning and 356.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.92 ms. Allocated memory is still 377.5 MB. Free memory was 356.2 MB in the beginning and 355.3 MB in the end (delta: 891.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 235.46 ms. Allocated memory is still 377.5 MB. Free memory was 355.3 MB in the beginning and 343.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 843617.59 ms. Allocated memory was 377.5 MB in the beginning and 14.1 GB in the end (delta: 13.8 GB). Free memory was 343.3 MB in the beginning and 10.5 GB in the end (delta: -10.2 GB). Peak memory consumption was 4.2 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 138.3ms, 51 PlacesBefore, 44 PlacesAfterwards, 71 TransitionsBefore, 64 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 357 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 357, positive: 357, positive conditional: 0, positive unconditional: 357, 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: 336, positive: 336, positive conditional: 0, positive unconditional: 336, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 336, positive: 336, positive conditional: 0, positive unconditional: 336, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 357, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 336, unknown conditional: 0, unknown unconditional: 336] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 27). Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 32.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 843428.6ms, OverallIterations: 125, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 827773.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 304.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2736 SDtfs, 4188 SDslu, 2671 SDs, 0 SdLazy, 4757 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3005.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1089 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 958 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 16446.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=51488occurred in iteration=121, InterpolantAutomatonStates: 1080, 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: 59.2ms SsaConstructionTime, 140.1ms SatisfiabilityAnalysisTime, 14692.0ms InterpolantComputationTime, 2750 NumberOfCodeBlocks, 2750 NumberOfCodeBlocksAsserted, 125 NumberOfCheckSat, 2625 ConstructedInterpolants, 0 QuantifiedInterpolants, 74351 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 125 InterpolantComputations, 125 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown