/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_15-list_entry_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:40:24,092 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2022-09-16 11:40:24,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:40:24,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:40:24,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:40:24,193 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-NoLbe.epf [2022-09-16 11:40:24,223 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:40:24,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:40:24,225 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:40:24,225 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:40:24,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:40:24,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:40:24,226 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:40:24,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:40:24,226 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:40:24,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:40:24,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:40:24,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:40:24,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:40:24,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:40:24,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:40:24,228 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:40:24,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:40:24,228 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:40:24,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:40:24,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:40:24,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:40:24,229 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:40:24,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:40:24,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:40:24,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:40:24,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:40:24,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:40:24,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:40:24,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:40:24,231 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:40:24,231 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:40:24,231 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:40:24,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:40:24,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:40:24,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:40:24,521 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:40:24,521 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:40:24,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_15-list_entry_nr.i [2022-09-16 11:40:24,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68b823caf/d5a83f0ee06c4d22a7004e0c1dd44a32/FLAG4a16349be [2022-09-16 11:40:25,060 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:40:25,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_15-list_entry_nr.i [2022-09-16 11:40:25,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68b823caf/d5a83f0ee06c4d22a7004e0c1dd44a32/FLAG4a16349be [2022-09-16 11:40:25,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68b823caf/d5a83f0ee06c4d22a7004e0c1dd44a32 [2022-09-16 11:40:25,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:40:25,393 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:40:25,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:40:25,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:40:25,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:40:25,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:40:25" (1/1) ... [2022-09-16 11:40:25,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b7d6c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:25, skipping insertion in model container [2022-09-16 11:40:25,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:40:25" (1/1) ... [2022-09-16 11:40:25,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:40:25,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:40:25,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:40:25,915 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:40:25,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:40:26,022 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:40:26,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:26 WrapperNode [2022-09-16 11:40:26,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:40:26,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:40:26,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:40:26,026 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:40:26,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:26" (1/1) ... [2022-09-16 11:40:26,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:26" (1/1) ... [2022-09-16 11:40:26,075 INFO L138 Inliner]: procedures = 365, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2022-09-16 11:40:26,076 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:40:26,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:40:26,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:40:26,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:40:26,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:26" (1/1) ... [2022-09-16 11:40:26,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:26" (1/1) ... [2022-09-16 11:40:26,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:26" (1/1) ... [2022-09-16 11:40:26,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:26" (1/1) ... [2022-09-16 11:40:26,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:26" (1/1) ... [2022-09-16 11:40:26,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:26" (1/1) ... [2022-09-16 11:40:26,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:26" (1/1) ... [2022-09-16 11:40:26,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:40:26,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:40:26,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:40:26,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:40:26,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:26" (1/1) ... [2022-09-16 11:40:26,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:40:26,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:40:26,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-16 11:40:26,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-16 11:40:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:40:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:40:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:40:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:40:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-16 11:40:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:40:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-09-16 11:40:26,171 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-09-16 11:40:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:40:26,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:40:26,172 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:40:26,333 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:40:26,335 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:40:26,553 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:40:26,559 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:40:26,560 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-16 11:40:26,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:40:26 BoogieIcfgContainer [2022-09-16 11:40:26,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:40:26,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:40:26,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:40:26,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:40:26,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:40:25" (1/3) ... [2022-09-16 11:40:26,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b52ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:40:26, skipping insertion in model container [2022-09-16 11:40:26,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:26" (2/3) ... [2022-09-16 11:40:26,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b52ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:40:26, skipping insertion in model container [2022-09-16 11:40:26,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:40:26" (3/3) ... [2022-09-16 11:40:26,574 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_15-list_entry_nr.i [2022-09-16 11:40:26,591 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:40:26,591 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-09-16 11:40:26,592 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:40:26,678 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-09-16 11:40:26,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 73 transitions, 151 flow [2022-09-16 11:40:26,777 INFO L130 PetriNetUnfolder]: 0/72 cut-off events. [2022-09-16 11:40:26,777 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:40:26,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 72 events. 0/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2022-09-16 11:40:26,779 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 73 transitions, 151 flow [2022-09-16 11:40:26,783 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 72 transitions, 147 flow [2022-09-16 11:40:26,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:40:26,805 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@37f89175, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:40:26,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-09-16 11:40:26,823 INFO L130 PetriNetUnfolder]: 0/46 cut-off events. [2022-09-16 11:40:26,823 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:40:26,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:26,824 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:26,825 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:26,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:26,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1780094849, now seen corresponding path program 1 times [2022-09-16 11:40:26,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:26,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043267518] [2022-09-16 11:40:26,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:26,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:27,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:27,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:27,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043267518] [2022-09-16 11:40:27,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043267518] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:27,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:27,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-09-16 11:40:27,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002407988] [2022-09-16 11:40:27,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:27,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 11:40:27,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:27,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 11:40:27,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:40:27,603 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2022-09-16 11:40:27,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 147 flow. Second operand has 16 states, 16 states have (on average 39.4375) internal successors, (631), 16 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:27,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:27,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2022-09-16 11:40:27,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:28,956 INFO L130 PetriNetUnfolder]: 84/383 cut-off events. [2022-09-16 11:40:28,957 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:40:28,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 383 events. 84/383 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1938 event pairs, 2 based on Foata normal form. 0/357 useless extension candidates. Maximal degree in co-relation 552. Up to 29 conditions per place. [2022-09-16 11:40:28,962 INFO L137 encePairwiseOnDemand]: 52/73 looper letters, 64 selfloop transitions, 36 changer transitions 24/161 dead transitions. [2022-09-16 11:40:28,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 161 transitions, 573 flow [2022-09-16 11:40:28,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-09-16 11:40:28,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-09-16 11:40:28,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1078 transitions. [2022-09-16 11:40:28,980 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5906849315068493 [2022-09-16 11:40:28,981 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1078 transitions. [2022-09-16 11:40:28,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1078 transitions. [2022-09-16 11:40:28,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:28,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1078 transitions. [2022-09-16 11:40:28,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 43.12) internal successors, (1078), 25 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:29,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 73.0) internal successors, (1898), 26 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:29,003 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 73.0) internal successors, (1898), 26 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:29,005 INFO L175 Difference]: Start difference. First operand has 76 places, 72 transitions, 147 flow. Second operand 25 states and 1078 transitions. [2022-09-16 11:40:29,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 161 transitions, 573 flow [2022-09-16 11:40:29,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 161 transitions, 572 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:40:29,013 INFO L231 Difference]: Finished difference. Result has 110 places, 96 transitions, 334 flow [2022-09-16 11:40:29,014 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=334, PETRI_PLACES=110, PETRI_TRANSITIONS=96} [2022-09-16 11:40:29,018 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 34 predicate places. [2022-09-16 11:40:29,018 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 96 transitions, 334 flow [2022-09-16 11:40:29,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 39.4375) internal successors, (631), 16 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:29,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:29,019 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:29,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:40:29,020 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:29,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:29,020 INFO L85 PathProgramCache]: Analyzing trace with hash -651634337, now seen corresponding path program 1 times [2022-09-16 11:40:29,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:29,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664434428] [2022-09-16 11:40:29,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:29,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:29,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:29,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:29,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664434428] [2022-09-16 11:40:29,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664434428] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:29,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:29,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-09-16 11:40:29,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529226151] [2022-09-16 11:40:29,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:29,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 11:40:29,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:29,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 11:40:29,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:40:29,350 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2022-09-16 11:40:29,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 96 transitions, 334 flow. Second operand has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:29,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:29,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2022-09-16 11:40:29,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:30,296 INFO L130 PetriNetUnfolder]: 62/289 cut-off events. [2022-09-16 11:40:30,296 INFO L131 PetriNetUnfolder]: For 154/170 co-relation queries the response was YES. [2022-09-16 11:40:30,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 289 events. 62/289 cut-off events. For 154/170 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1377 event pairs, 1 based on Foata normal form. 2/282 useless extension candidates. Maximal degree in co-relation 586. Up to 45 conditions per place. [2022-09-16 11:40:30,299 INFO L137 encePairwiseOnDemand]: 52/73 looper letters, 53 selfloop transitions, 25 changer transitions 17/132 dead transitions. [2022-09-16 11:40:30,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 132 transitions, 636 flow [2022-09-16 11:40:30,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-16 11:40:30,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-16 11:40:30,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 889 transitions. [2022-09-16 11:40:30,303 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5799086757990868 [2022-09-16 11:40:30,303 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 889 transitions. [2022-09-16 11:40:30,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 889 transitions. [2022-09-16 11:40:30,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:30,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 889 transitions. [2022-09-16 11:40:30,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 42.333333333333336) internal successors, (889), 21 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:30,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 73.0) internal successors, (1606), 22 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:30,310 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 73.0) internal successors, (1606), 22 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:30,310 INFO L175 Difference]: Start difference. First operand has 110 places, 96 transitions, 334 flow. Second operand 21 states and 889 transitions. [2022-09-16 11:40:30,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 132 transitions, 636 flow [2022-09-16 11:40:30,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 132 transitions, 612 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-16 11:40:30,317 INFO L231 Difference]: Finished difference. Result has 128 places, 89 transitions, 366 flow [2022-09-16 11:40:30,317 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=366, PETRI_PLACES=128, PETRI_TRANSITIONS=89} [2022-09-16 11:40:30,318 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 52 predicate places. [2022-09-16 11:40:30,318 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 89 transitions, 366 flow [2022-09-16 11:40:30,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:30,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:30,319 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:30,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:40:30,319 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:30,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:30,320 INFO L85 PathProgramCache]: Analyzing trace with hash 654835029, now seen corresponding path program 1 times [2022-09-16 11:40:30,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:30,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708020680] [2022-09-16 11:40:30,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:30,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:30,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:30,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708020680] [2022-09-16 11:40:30,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708020680] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:30,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:30,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-09-16 11:40:30,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861815921] [2022-09-16 11:40:30,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:30,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 11:40:30,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:30,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 11:40:30,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:40:30,613 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2022-09-16 11:40:30,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 89 transitions, 366 flow. Second operand has 16 states, 16 states have (on average 39.4375) internal successors, (631), 16 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:30,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:30,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2022-09-16 11:40:30,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:31,479 INFO L130 PetriNetUnfolder]: 47/272 cut-off events. [2022-09-16 11:40:31,479 INFO L131 PetriNetUnfolder]: For 335/343 co-relation queries the response was YES. [2022-09-16 11:40:31,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 272 events. 47/272 cut-off events. For 335/343 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1345 event pairs, 0 based on Foata normal form. 8/271 useless extension candidates. Maximal degree in co-relation 696. Up to 38 conditions per place. [2022-09-16 11:40:31,482 INFO L137 encePairwiseOnDemand]: 53/73 looper letters, 46 selfloop transitions, 30 changer transitions 2/124 dead transitions. [2022-09-16 11:40:31,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 124 transitions, 699 flow [2022-09-16 11:40:31,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:40:31,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:40:31,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 758 transitions. [2022-09-16 11:40:31,485 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5768645357686454 [2022-09-16 11:40:31,485 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 758 transitions. [2022-09-16 11:40:31,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 758 transitions. [2022-09-16 11:40:31,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:31,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 758 transitions. [2022-09-16 11:40:31,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 42.111111111111114) internal successors, (758), 18 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:31,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 73.0) internal successors, (1387), 19 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:31,491 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 73.0) internal successors, (1387), 19 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:31,491 INFO L175 Difference]: Start difference. First operand has 128 places, 89 transitions, 366 flow. Second operand 18 states and 758 transitions. [2022-09-16 11:40:31,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 124 transitions, 699 flow [2022-09-16 11:40:31,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 124 transitions, 584 flow, removed 10 selfloop flow, removed 21 redundant places. [2022-09-16 11:40:31,497 INFO L231 Difference]: Finished difference. Result has 123 places, 101 transitions, 447 flow [2022-09-16 11:40:31,497 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=447, PETRI_PLACES=123, PETRI_TRANSITIONS=101} [2022-09-16 11:40:31,498 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 47 predicate places. [2022-09-16 11:40:31,498 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 101 transitions, 447 flow [2022-09-16 11:40:31,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 39.4375) internal successors, (631), 16 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:31,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:31,499 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:31,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:40:31,500 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:31,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:31,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1174950429, now seen corresponding path program 1 times [2022-09-16 11:40:31,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:31,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050228489] [2022-09-16 11:40:31,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:31,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:31,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:31,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:31,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050228489] [2022-09-16 11:40:31,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050228489] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:31,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:31,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-09-16 11:40:31,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267583405] [2022-09-16 11:40:31,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:31,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 11:40:31,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:31,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 11:40:31,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:40:31,815 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2022-09-16 11:40:31,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 101 transitions, 447 flow. Second operand has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:31,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:31,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2022-09-16 11:40:31,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:32,638 INFO L130 PetriNetUnfolder]: 44/259 cut-off events. [2022-09-16 11:40:32,638 INFO L131 PetriNetUnfolder]: For 215/222 co-relation queries the response was YES. [2022-09-16 11:40:32,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 705 conditions, 259 events. 44/259 cut-off events. For 215/222 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1238 event pairs, 0 based on Foata normal form. 7/262 useless extension candidates. Maximal degree in co-relation 627. Up to 30 conditions per place. [2022-09-16 11:40:32,641 INFO L137 encePairwiseOnDemand]: 51/73 looper letters, 41 selfloop transitions, 29 changer transitions 8/124 dead transitions. [2022-09-16 11:40:32,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 124 transitions, 702 flow [2022-09-16 11:40:32,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-16 11:40:32,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-09-16 11:40:32,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 796 transitions. [2022-09-16 11:40:32,645 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5739005046863734 [2022-09-16 11:40:32,645 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 796 transitions. [2022-09-16 11:40:32,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 796 transitions. [2022-09-16 11:40:32,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:32,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 796 transitions. [2022-09-16 11:40:32,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 41.89473684210526) internal successors, (796), 19 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 73.0) internal successors, (1460), 20 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,651 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 73.0) internal successors, (1460), 20 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,651 INFO L175 Difference]: Start difference. First operand has 123 places, 101 transitions, 447 flow. Second operand 19 states and 796 transitions. [2022-09-16 11:40:32,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 124 transitions, 702 flow [2022-09-16 11:40:32,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 124 transitions, 676 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-09-16 11:40:32,659 INFO L231 Difference]: Finished difference. Result has 135 places, 98 transitions, 490 flow [2022-09-16 11:40:32,659 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=490, PETRI_PLACES=135, PETRI_TRANSITIONS=98} [2022-09-16 11:40:32,660 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 59 predicate places. [2022-09-16 11:40:32,660 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 98 transitions, 490 flow [2022-09-16 11:40:32,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:32,661 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:32,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:40:32,661 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:32,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:32,662 INFO L85 PathProgramCache]: Analyzing trace with hash -2072766421, now seen corresponding path program 1 times [2022-09-16 11:40:32,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:32,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573479404] [2022-09-16 11:40:32,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:32,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:32,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:32,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:32,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573479404] [2022-09-16 11:40:32,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573479404] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:32,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:32,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-16 11:40:32,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137076803] [2022-09-16 11:40:32,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:32,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-16 11:40:32,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:32,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-16 11:40:32,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:40:32,883 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:32,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 98 transitions, 490 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:32,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:32,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:33,248 INFO L130 PetriNetUnfolder]: 76/369 cut-off events. [2022-09-16 11:40:33,248 INFO L131 PetriNetUnfolder]: For 715/723 co-relation queries the response was YES. [2022-09-16 11:40:33,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 369 events. 76/369 cut-off events. For 715/723 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1824 event pairs, 9 based on Foata normal form. 11/376 useless extension candidates. Maximal degree in co-relation 1013. Up to 40 conditions per place. [2022-09-16 11:40:33,252 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 65 selfloop transitions, 21 changer transitions 0/146 dead transitions. [2022-09-16 11:40:33,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 146 transitions, 922 flow [2022-09-16 11:40:33,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:40:33,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:40:33,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 609 transitions. [2022-09-16 11:40:33,254 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7584059775840598 [2022-09-16 11:40:33,254 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 609 transitions. [2022-09-16 11:40:33,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 609 transitions. [2022-09-16 11:40:33,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:33,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 609 transitions. [2022-09-16 11:40:33,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.36363636363637) internal successors, (609), 11 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:33,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:33,258 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:33,258 INFO L175 Difference]: Start difference. First operand has 135 places, 98 transitions, 490 flow. Second operand 11 states and 609 transitions. [2022-09-16 11:40:33,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 146 transitions, 922 flow [2022-09-16 11:40:33,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 146 transitions, 803 flow, removed 3 selfloop flow, removed 20 redundant places. [2022-09-16 11:40:33,265 INFO L231 Difference]: Finished difference. Result has 127 places, 108 transitions, 530 flow [2022-09-16 11:40:33,265 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=530, PETRI_PLACES=127, PETRI_TRANSITIONS=108} [2022-09-16 11:40:33,266 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 51 predicate places. [2022-09-16 11:40:33,266 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 108 transitions, 530 flow [2022-09-16 11:40:33,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:33,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:33,266 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:33,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:40:33,267 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:33,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:33,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1973443087, now seen corresponding path program 2 times [2022-09-16 11:40:33,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:33,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739463903] [2022-09-16 11:40:33,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:33,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:33,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:33,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739463903] [2022-09-16 11:40:33,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739463903] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:33,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:33,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-16 11:40:33,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930214075] [2022-09-16 11:40:33,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:33,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-16 11:40:33,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:33,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-16 11:40:33,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:40:33,395 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:33,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 108 transitions, 530 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:33,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:33,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:33,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:33,776 INFO L130 PetriNetUnfolder]: 129/626 cut-off events. [2022-09-16 11:40:33,776 INFO L131 PetriNetUnfolder]: For 867/883 co-relation queries the response was YES. [2022-09-16 11:40:33,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1851 conditions, 626 events. 129/626 cut-off events. For 867/883 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3991 event pairs, 10 based on Foata normal form. 19/639 useless extension candidates. Maximal degree in co-relation 1777. Up to 119 conditions per place. [2022-09-16 11:40:33,783 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 84 selfloop transitions, 27 changer transitions 0/171 dead transitions. [2022-09-16 11:40:33,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 171 transitions, 1124 flow [2022-09-16 11:40:33,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:40:33,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:40:33,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 615 transitions. [2022-09-16 11:40:33,785 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7658779576587795 [2022-09-16 11:40:33,785 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 615 transitions. [2022-09-16 11:40:33,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 615 transitions. [2022-09-16 11:40:33,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:33,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 615 transitions. [2022-09-16 11:40:33,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.90909090909091) internal successors, (615), 11 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:33,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:33,790 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:33,790 INFO L175 Difference]: Start difference. First operand has 127 places, 108 transitions, 530 flow. Second operand 11 states and 615 transitions. [2022-09-16 11:40:33,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 171 transitions, 1124 flow [2022-09-16 11:40:33,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 171 transitions, 1063 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-16 11:40:33,800 INFO L231 Difference]: Finished difference. Result has 138 places, 124 transitions, 720 flow [2022-09-16 11:40:33,800 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=720, PETRI_PLACES=138, PETRI_TRANSITIONS=124} [2022-09-16 11:40:33,802 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 62 predicate places. [2022-09-16 11:40:33,802 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 124 transitions, 720 flow [2022-09-16 11:40:33,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:33,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:33,803 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:33,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:40:33,803 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:33,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:33,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1595994481, now seen corresponding path program 3 times [2022-09-16 11:40:33,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:33,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603821945] [2022-09-16 11:40:33,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:33,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:33,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:33,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:33,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603821945] [2022-09-16 11:40:33,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603821945] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:33,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:33,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-16 11:40:33,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925731383] [2022-09-16 11:40:33,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:33,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-16 11:40:33,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:33,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-16 11:40:33,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:40:33,994 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:33,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 124 transitions, 720 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:33,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:33,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:33,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:34,369 INFO L130 PetriNetUnfolder]: 137/677 cut-off events. [2022-09-16 11:40:34,369 INFO L131 PetriNetUnfolder]: For 1337/1365 co-relation queries the response was YES. [2022-09-16 11:40:34,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2128 conditions, 677 events. 137/677 cut-off events. For 1337/1365 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4453 event pairs, 16 based on Foata normal form. 23/694 useless extension candidates. Maximal degree in co-relation 2047. Up to 84 conditions per place. [2022-09-16 11:40:34,376 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 72 selfloop transitions, 40 changer transitions 0/172 dead transitions. [2022-09-16 11:40:34,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 172 transitions, 1246 flow [2022-09-16 11:40:34,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:40:34,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:40:34,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 609 transitions. [2022-09-16 11:40:34,379 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7584059775840598 [2022-09-16 11:40:34,379 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 609 transitions. [2022-09-16 11:40:34,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 609 transitions. [2022-09-16 11:40:34,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:34,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 609 transitions. [2022-09-16 11:40:34,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.36363636363637) internal successors, (609), 11 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:34,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:34,382 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:34,383 INFO L175 Difference]: Start difference. First operand has 138 places, 124 transitions, 720 flow. Second operand 11 states and 609 transitions. [2022-09-16 11:40:34,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 172 transitions, 1246 flow [2022-09-16 11:40:34,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 172 transitions, 1229 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-09-16 11:40:34,395 INFO L231 Difference]: Finished difference. Result has 150 places, 134 transitions, 893 flow [2022-09-16 11:40:34,395 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=893, PETRI_PLACES=150, PETRI_TRANSITIONS=134} [2022-09-16 11:40:34,396 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 74 predicate places. [2022-09-16 11:40:34,396 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 134 transitions, 893 flow [2022-09-16 11:40:34,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:34,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:34,397 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:34,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:40:34,397 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:34,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:34,398 INFO L85 PathProgramCache]: Analyzing trace with hash 66018381, now seen corresponding path program 4 times [2022-09-16 11:40:34,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:34,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253488359] [2022-09-16 11:40:34,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:34,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:34,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:34,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:34,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253488359] [2022-09-16 11:40:34,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253488359] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:34,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:34,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:34,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164772411] [2022-09-16 11:40:34,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:34,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:34,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:34,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:34,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:34,557 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:34,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 134 transitions, 893 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:34,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:34,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:34,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:35,176 INFO L130 PetriNetUnfolder]: 169/891 cut-off events. [2022-09-16 11:40:35,176 INFO L131 PetriNetUnfolder]: For 2474/2499 co-relation queries the response was YES. [2022-09-16 11:40:35,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2975 conditions, 891 events. 169/891 cut-off events. For 2474/2499 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6598 event pairs, 9 based on Foata normal form. 25/907 useless extension candidates. Maximal degree in co-relation 2888. Up to 97 conditions per place. [2022-09-16 11:40:35,187 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 93 selfloop transitions, 64 changer transitions 0/217 dead transitions. [2022-09-16 11:40:35,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 217 transitions, 1910 flow [2022-09-16 11:40:35,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-16 11:40:35,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-16 11:40:35,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 924 transitions. [2022-09-16 11:40:35,190 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7445608380338437 [2022-09-16 11:40:35,190 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 924 transitions. [2022-09-16 11:40:35,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 924 transitions. [2022-09-16 11:40:35,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:35,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 924 transitions. [2022-09-16 11:40:35,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.35294117647059) internal successors, (924), 17 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:35,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:35,197 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:35,197 INFO L175 Difference]: Start difference. First operand has 150 places, 134 transitions, 893 flow. Second operand 17 states and 924 transitions. [2022-09-16 11:40:35,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 217 transitions, 1910 flow [2022-09-16 11:40:35,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 217 transitions, 1778 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-09-16 11:40:35,215 INFO L231 Difference]: Finished difference. Result has 165 places, 162 transitions, 1260 flow [2022-09-16 11:40:35,215 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1260, PETRI_PLACES=165, PETRI_TRANSITIONS=162} [2022-09-16 11:40:35,217 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 89 predicate places. [2022-09-16 11:40:35,218 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 162 transitions, 1260 flow [2022-09-16 11:40:35,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:35,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:35,218 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:35,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:40:35,219 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:35,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:35,219 INFO L85 PathProgramCache]: Analyzing trace with hash -707654379, now seen corresponding path program 5 times [2022-09-16 11:40:35,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:35,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13299798] [2022-09-16 11:40:35,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:35,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:35,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:35,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13299798] [2022-09-16 11:40:35,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13299798] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:35,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:35,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:35,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435418340] [2022-09-16 11:40:35,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:35,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:35,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:35,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:35,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:35,408 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:35,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 162 transitions, 1260 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:35,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:35,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:35,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:35,948 INFO L130 PetriNetUnfolder]: 185/987 cut-off events. [2022-09-16 11:40:35,948 INFO L131 PetriNetUnfolder]: For 3282/3331 co-relation queries the response was YES. [2022-09-16 11:40:35,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3428 conditions, 987 events. 185/987 cut-off events. For 3282/3331 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7643 event pairs, 22 based on Foata normal form. 47/1026 useless extension candidates. Maximal degree in co-relation 3336. Up to 103 conditions per place. [2022-09-16 11:40:35,960 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 84 selfloop transitions, 77 changer transitions 0/221 dead transitions. [2022-09-16 11:40:35,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 221 transitions, 2103 flow [2022-09-16 11:40:35,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-16 11:40:35,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-16 11:40:35,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 767 transitions. [2022-09-16 11:40:35,962 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7504892367906066 [2022-09-16 11:40:35,962 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 767 transitions. [2022-09-16 11:40:35,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 767 transitions. [2022-09-16 11:40:35,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:35,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 767 transitions. [2022-09-16 11:40:35,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 54.785714285714285) internal successors, (767), 14 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:35,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 73.0) internal successors, (1095), 15 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:35,966 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 73.0) internal successors, (1095), 15 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:35,966 INFO L175 Difference]: Start difference. First operand has 165 places, 162 transitions, 1260 flow. Second operand 14 states and 767 transitions. [2022-09-16 11:40:35,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 221 transitions, 2103 flow [2022-09-16 11:40:35,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 221 transitions, 1869 flow, removed 79 selfloop flow, removed 5 redundant places. [2022-09-16 11:40:35,987 INFO L231 Difference]: Finished difference. Result has 180 places, 179 transitions, 1534 flow [2022-09-16 11:40:35,987 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1534, PETRI_PLACES=180, PETRI_TRANSITIONS=179} [2022-09-16 11:40:35,988 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 104 predicate places. [2022-09-16 11:40:35,988 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 179 transitions, 1534 flow [2022-09-16 11:40:35,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:35,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:35,989 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:35,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:40:35,989 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:35,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:35,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1884845749, now seen corresponding path program 6 times [2022-09-16 11:40:35,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:35,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076523818] [2022-09-16 11:40:35,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:35,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:36,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:36,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076523818] [2022-09-16 11:40:36,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076523818] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:36,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:36,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:36,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185399906] [2022-09-16 11:40:36,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:36,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:36,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:36,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:36,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:36,182 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:36,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 179 transitions, 1534 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:36,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:36,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:36,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:36,904 INFO L130 PetriNetUnfolder]: 224/1211 cut-off events. [2022-09-16 11:40:36,904 INFO L131 PetriNetUnfolder]: For 5048/5090 co-relation queries the response was YES. [2022-09-16 11:40:36,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4339 conditions, 1211 events. 224/1211 cut-off events. For 5048/5090 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 10009 event pairs, 17 based on Foata normal form. 28/1228 useless extension candidates. Maximal degree in co-relation 4241. Up to 130 conditions per place. [2022-09-16 11:40:36,919 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 123 selfloop transitions, 79 changer transitions 0/262 dead transitions. [2022-09-16 11:40:36,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 262 transitions, 2711 flow [2022-09-16 11:40:36,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-16 11:40:36,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-16 11:40:36,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 932 transitions. [2022-09-16 11:40:36,921 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7510072522159549 [2022-09-16 11:40:36,921 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 932 transitions. [2022-09-16 11:40:36,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 932 transitions. [2022-09-16 11:40:36,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:36,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 932 transitions. [2022-09-16 11:40:36,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.8235294117647) internal successors, (932), 17 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:36,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:36,925 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:36,925 INFO L175 Difference]: Start difference. First operand has 180 places, 179 transitions, 1534 flow. Second operand 17 states and 932 transitions. [2022-09-16 11:40:36,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 262 transitions, 2711 flow [2022-09-16 11:40:36,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 262 transitions, 2587 flow, removed 24 selfloop flow, removed 6 redundant places. [2022-09-16 11:40:36,958 INFO L231 Difference]: Finished difference. Result has 197 places, 200 transitions, 1965 flow [2022-09-16 11:40:36,959 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1965, PETRI_PLACES=197, PETRI_TRANSITIONS=200} [2022-09-16 11:40:36,959 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 121 predicate places. [2022-09-16 11:40:36,960 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 200 transitions, 1965 flow [2022-09-16 11:40:36,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:36,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:36,960 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:36,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:40:36,961 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:36,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:36,961 INFO L85 PathProgramCache]: Analyzing trace with hash 152154035, now seen corresponding path program 7 times [2022-09-16 11:40:36,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:36,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888745640] [2022-09-16 11:40:36,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:36,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:37,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:37,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:37,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888745640] [2022-09-16 11:40:37,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888745640] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:37,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:37,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:37,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238026550] [2022-09-16 11:40:37,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:37,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:37,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:37,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:37,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:37,121 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:37,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 200 transitions, 1965 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:37,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:37,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:37,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:37,765 INFO L130 PetriNetUnfolder]: 268/1491 cut-off events. [2022-09-16 11:40:37,765 INFO L131 PetriNetUnfolder]: For 7239/7304 co-relation queries the response was YES. [2022-09-16 11:40:37,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5509 conditions, 1491 events. 268/1491 cut-off events. For 7239/7304 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 13200 event pairs, 33 based on Foata normal form. 43/1521 useless extension candidates. Maximal degree in co-relation 5405. Up to 185 conditions per place. [2022-09-16 11:40:37,782 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 143 selfloop transitions, 90 changer transitions 0/293 dead transitions. [2022-09-16 11:40:37,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 293 transitions, 3326 flow [2022-09-16 11:40:37,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:40:37,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:40:37,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 834 transitions. [2022-09-16 11:40:37,784 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7616438356164383 [2022-09-16 11:40:37,785 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 834 transitions. [2022-09-16 11:40:37,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 834 transitions. [2022-09-16 11:40:37,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:37,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 834 transitions. [2022-09-16 11:40:37,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 55.6) internal successors, (834), 15 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:37,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:37,793 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:37,793 INFO L175 Difference]: Start difference. First operand has 197 places, 200 transitions, 1965 flow. Second operand 15 states and 834 transitions. [2022-09-16 11:40:37,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 293 transitions, 3326 flow [2022-09-16 11:40:37,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 293 transitions, 3187 flow, removed 39 selfloop flow, removed 6 redundant places. [2022-09-16 11:40:37,838 INFO L231 Difference]: Finished difference. Result has 213 places, 225 transitions, 2480 flow [2022-09-16 11:40:37,839 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1857, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2480, PETRI_PLACES=213, PETRI_TRANSITIONS=225} [2022-09-16 11:40:37,839 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 137 predicate places. [2022-09-16 11:40:37,840 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 225 transitions, 2480 flow [2022-09-16 11:40:37,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:37,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:37,840 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:37,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:40:37,840 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:37,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:37,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1021851251, now seen corresponding path program 8 times [2022-09-16 11:40:37,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:37,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851969199] [2022-09-16 11:40:37,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:37,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:38,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:38,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:38,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851969199] [2022-09-16 11:40:38,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851969199] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:38,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:38,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:38,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433937896] [2022-09-16 11:40:38,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:38,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:38,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:38,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:38,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:38,009 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:38,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 225 transitions, 2480 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:38,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:38,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:38,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:38,732 INFO L130 PetriNetUnfolder]: 271/1516 cut-off events. [2022-09-16 11:40:38,733 INFO L131 PetriNetUnfolder]: For 9191/9253 co-relation queries the response was YES. [2022-09-16 11:40:38,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5857 conditions, 1516 events. 271/1516 cut-off events. For 9191/9253 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 13465 event pairs, 41 based on Foata normal form. 30/1532 useless extension candidates. Maximal degree in co-relation 5745. Up to 149 conditions per place. [2022-09-16 11:40:38,753 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 153 selfloop transitions, 88 changer transitions 0/301 dead transitions. [2022-09-16 11:40:38,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 301 transitions, 3672 flow [2022-09-16 11:40:38,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-16 11:40:38,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-16 11:40:38,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 937 transitions. [2022-09-16 11:40:38,755 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7550362610797744 [2022-09-16 11:40:38,755 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 937 transitions. [2022-09-16 11:40:38,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 937 transitions. [2022-09-16 11:40:38,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:38,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 937 transitions. [2022-09-16 11:40:38,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 55.11764705882353) internal successors, (937), 17 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:38,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:38,761 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:38,761 INFO L175 Difference]: Start difference. First operand has 213 places, 225 transitions, 2480 flow. Second operand 17 states and 937 transitions. [2022-09-16 11:40:38,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 301 transitions, 3672 flow [2022-09-16 11:40:38,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 301 transitions, 3558 flow, removed 39 selfloop flow, removed 4 redundant places. [2022-09-16 11:40:38,820 INFO L231 Difference]: Finished difference. Result has 232 places, 241 transitions, 2886 flow [2022-09-16 11:40:38,820 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2372, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2886, PETRI_PLACES=232, PETRI_TRANSITIONS=241} [2022-09-16 11:40:38,821 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 156 predicate places. [2022-09-16 11:40:38,822 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 241 transitions, 2886 flow [2022-09-16 11:40:38,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:38,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:38,822 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:38,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 11:40:38,822 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:38,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:38,823 INFO L85 PathProgramCache]: Analyzing trace with hash -751078267, now seen corresponding path program 9 times [2022-09-16 11:40:38,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:38,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275013533] [2022-09-16 11:40:38,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:38,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:39,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:39,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:39,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275013533] [2022-09-16 11:40:39,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275013533] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:39,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:39,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:39,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633670177] [2022-09-16 11:40:39,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:39,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:39,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:39,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:39,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:39,081 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:39,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 241 transitions, 2886 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:39,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:39,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:39,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:39,976 INFO L130 PetriNetUnfolder]: 279/1591 cut-off events. [2022-09-16 11:40:39,977 INFO L131 PetriNetUnfolder]: For 11411/11483 co-relation queries the response was YES. [2022-09-16 11:40:39,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6387 conditions, 1591 events. 279/1591 cut-off events. For 11411/11483 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 14496 event pairs, 63 based on Foata normal form. 51/1630 useless extension candidates. Maximal degree in co-relation 6268. Up to 275 conditions per place. [2022-09-16 11:40:39,994 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 168 selfloop transitions, 74 changer transitions 0/302 dead transitions. [2022-09-16 11:40:39,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 302 transitions, 4009 flow [2022-09-16 11:40:39,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-16 11:40:39,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-16 11:40:39,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 721 transitions. [2022-09-16 11:40:39,996 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7597471022128557 [2022-09-16 11:40:39,996 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 721 transitions. [2022-09-16 11:40:39,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 721 transitions. [2022-09-16 11:40:39,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:39,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 721 transitions. [2022-09-16 11:40:39,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 55.46153846153846) internal successors, (721), 13 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:39,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:40,000 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:40,000 INFO L175 Difference]: Start difference. First operand has 232 places, 241 transitions, 2886 flow. Second operand 13 states and 721 transitions. [2022-09-16 11:40:40,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 302 transitions, 4009 flow [2022-09-16 11:40:40,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 302 transitions, 3688 flow, removed 128 selfloop flow, removed 6 redundant places. [2022-09-16 11:40:40,061 INFO L231 Difference]: Finished difference. Result has 243 places, 252 transitions, 3083 flow [2022-09-16 11:40:40,062 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2693, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3083, PETRI_PLACES=243, PETRI_TRANSITIONS=252} [2022-09-16 11:40:40,063 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 167 predicate places. [2022-09-16 11:40:40,063 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 252 transitions, 3083 flow [2022-09-16 11:40:40,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:40,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:40,064 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:40,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:40:40,064 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:40,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:40,064 INFO L85 PathProgramCache]: Analyzing trace with hash 235712657, now seen corresponding path program 10 times [2022-09-16 11:40:40,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:40,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931782409] [2022-09-16 11:40:40,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:40,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:40,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:40,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931782409] [2022-09-16 11:40:40,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931782409] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:40,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:40,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:40,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911017169] [2022-09-16 11:40:40,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:40,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:40,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:40,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:40,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:40,317 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:40,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 252 transitions, 3083 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:40,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:40,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:40,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:41,057 INFO L130 PetriNetUnfolder]: 282/1629 cut-off events. [2022-09-16 11:40:41,058 INFO L131 PetriNetUnfolder]: For 11412/11473 co-relation queries the response was YES. [2022-09-16 11:40:41,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6489 conditions, 1629 events. 282/1629 cut-off events. For 11412/11473 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 14939 event pairs, 66 based on Foata normal form. 27/1644 useless extension candidates. Maximal degree in co-relation 6366. Up to 331 conditions per place. [2022-09-16 11:40:41,079 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 184 selfloop transitions, 60 changer transitions 0/304 dead transitions. [2022-09-16 11:40:41,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 304 transitions, 4044 flow [2022-09-16 11:40:41,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:40:41,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:40:41,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 615 transitions. [2022-09-16 11:40:41,081 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7658779576587795 [2022-09-16 11:40:41,081 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 615 transitions. [2022-09-16 11:40:41,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 615 transitions. [2022-09-16 11:40:41,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:41,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 615 transitions. [2022-09-16 11:40:41,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.90909090909091) internal successors, (615), 11 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:41,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:41,084 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:41,084 INFO L175 Difference]: Start difference. First operand has 243 places, 252 transitions, 3083 flow. Second operand 11 states and 615 transitions. [2022-09-16 11:40:41,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 304 transitions, 4044 flow [2022-09-16 11:40:41,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 304 transitions, 3937 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-09-16 11:40:41,152 INFO L231 Difference]: Finished difference. Result has 253 places, 263 transitions, 3378 flow [2022-09-16 11:40:41,152 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2980, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3378, PETRI_PLACES=253, PETRI_TRANSITIONS=263} [2022-09-16 11:40:41,153 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 177 predicate places. [2022-09-16 11:40:41,153 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 263 transitions, 3378 flow [2022-09-16 11:40:41,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:41,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:41,154 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:41,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 11:40:41,154 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:41,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:41,154 INFO L85 PathProgramCache]: Analyzing trace with hash 2144773403, now seen corresponding path program 11 times [2022-09-16 11:40:41,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:41,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227913338] [2022-09-16 11:40:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:41,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:41,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:41,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:41,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227913338] [2022-09-16 11:40:41,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227913338] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:41,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:41,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:41,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832487189] [2022-09-16 11:40:41,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:41,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:41,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:41,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:41,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:41,385 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:41,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 263 transitions, 3378 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:41,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:41,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:41,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:42,189 INFO L130 PetriNetUnfolder]: 343/2064 cut-off events. [2022-09-16 11:40:42,190 INFO L131 PetriNetUnfolder]: For 15288/15364 co-relation queries the response was YES. [2022-09-16 11:40:42,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8208 conditions, 2064 events. 343/2064 cut-off events. For 15288/15364 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 20537 event pairs, 98 based on Foata normal form. 19/2064 useless extension candidates. Maximal degree in co-relation 8078. Up to 284 conditions per place. [2022-09-16 11:40:42,222 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 254 selfloop transitions, 38 changer transitions 0/352 dead transitions. [2022-09-16 11:40:42,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 352 transitions, 4996 flow [2022-09-16 11:40:42,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:40:42,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:40:42,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 630 transitions. [2022-09-16 11:40:42,224 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7845579078455791 [2022-09-16 11:40:42,224 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 630 transitions. [2022-09-16 11:40:42,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 630 transitions. [2022-09-16 11:40:42,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:42,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 630 transitions. [2022-09-16 11:40:42,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 57.27272727272727) internal successors, (630), 11 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:42,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:42,227 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:42,227 INFO L175 Difference]: Start difference. First operand has 253 places, 263 transitions, 3378 flow. Second operand 11 states and 630 transitions. [2022-09-16 11:40:42,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 352 transitions, 4996 flow [2022-09-16 11:40:42,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 352 transitions, 4832 flow, removed 44 selfloop flow, removed 6 redundant places. [2022-09-16 11:40:42,327 INFO L231 Difference]: Finished difference. Result has 262 places, 278 transitions, 3648 flow [2022-09-16 11:40:42,327 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3239, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3648, PETRI_PLACES=262, PETRI_TRANSITIONS=278} [2022-09-16 11:40:42,328 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 186 predicate places. [2022-09-16 11:40:42,328 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 278 transitions, 3648 flow [2022-09-16 11:40:42,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:42,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:42,328 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:42,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:40:42,329 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:42,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:42,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1632693491, now seen corresponding path program 12 times [2022-09-16 11:40:42,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:42,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493108761] [2022-09-16 11:40:42,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:42,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:42,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:42,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:42,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493108761] [2022-09-16 11:40:42,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493108761] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:42,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:42,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:42,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338706659] [2022-09-16 11:40:42,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:42,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:42,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:42,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:42,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:42,548 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:42,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 278 transitions, 3648 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:42,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:42,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:42,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:43,339 INFO L130 PetriNetUnfolder]: 343/2075 cut-off events. [2022-09-16 11:40:43,340 INFO L131 PetriNetUnfolder]: For 15257/15348 co-relation queries the response was YES. [2022-09-16 11:40:43,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8210 conditions, 2075 events. 343/2075 cut-off events. For 15257/15348 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 20737 event pairs, 98 based on Foata normal form. 28/2084 useless extension candidates. Maximal degree in co-relation 8077. Up to 292 conditions per place. [2022-09-16 11:40:43,358 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 223 selfloop transitions, 53 changer transitions 0/336 dead transitions. [2022-09-16 11:40:43,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 336 transitions, 4836 flow [2022-09-16 11:40:43,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:40:43,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:40:43,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 617 transitions. [2022-09-16 11:40:43,360 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7683686176836861 [2022-09-16 11:40:43,360 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 617 transitions. [2022-09-16 11:40:43,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 617 transitions. [2022-09-16 11:40:43,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:43,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 617 transitions. [2022-09-16 11:40:43,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.09090909090909) internal successors, (617), 11 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:43,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:43,363 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:43,363 INFO L175 Difference]: Start difference. First operand has 262 places, 278 transitions, 3648 flow. Second operand 11 states and 617 transitions. [2022-09-16 11:40:43,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 336 transitions, 4836 flow [2022-09-16 11:40:43,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 336 transitions, 4758 flow, removed 20 selfloop flow, removed 5 redundant places. [2022-09-16 11:40:43,440 INFO L231 Difference]: Finished difference. Result has 272 places, 288 transitions, 3935 flow [2022-09-16 11:40:43,440 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3571, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3935, PETRI_PLACES=272, PETRI_TRANSITIONS=288} [2022-09-16 11:40:43,441 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 196 predicate places. [2022-09-16 11:40:43,441 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 288 transitions, 3935 flow [2022-09-16 11:40:43,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:43,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:43,441 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:43,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-16 11:40:43,442 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:43,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:43,442 INFO L85 PathProgramCache]: Analyzing trace with hash -684527419, now seen corresponding path program 13 times [2022-09-16 11:40:43,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:43,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322786605] [2022-09-16 11:40:43,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:43,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:43,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:43,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:43,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322786605] [2022-09-16 11:40:43,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322786605] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:43,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:43,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:43,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570892325] [2022-09-16 11:40:43,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:43,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:43,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:43,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:43,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:43,664 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:43,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 288 transitions, 3935 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:43,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:43,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:43,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:44,569 INFO L130 PetriNetUnfolder]: 340/2084 cut-off events. [2022-09-16 11:40:44,569 INFO L131 PetriNetUnfolder]: For 16505/16600 co-relation queries the response was YES. [2022-09-16 11:40:44,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8363 conditions, 2084 events. 340/2084 cut-off events. For 16505/16600 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 20923 event pairs, 94 based on Foata normal form. 31/2097 useless extension candidates. Maximal degree in co-relation 8225. Up to 284 conditions per place. [2022-09-16 11:40:44,586 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 232 selfloop transitions, 52 changer transitions 0/344 dead transitions. [2022-09-16 11:40:44,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 344 transitions, 5103 flow [2022-09-16 11:40:44,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:40:44,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:40:44,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 623 transitions. [2022-09-16 11:40:44,587 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.775840597758406 [2022-09-16 11:40:44,588 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 623 transitions. [2022-09-16 11:40:44,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 623 transitions. [2022-09-16 11:40:44,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:44,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 623 transitions. [2022-09-16 11:40:44,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.63636363636363) internal successors, (623), 11 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:44,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:44,591 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:44,591 INFO L175 Difference]: Start difference. First operand has 272 places, 288 transitions, 3935 flow. Second operand 11 states and 623 transitions. [2022-09-16 11:40:44,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 344 transitions, 5103 flow [2022-09-16 11:40:44,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 344 transitions, 5018 flow, removed 20 selfloop flow, removed 5 redundant places. [2022-09-16 11:40:44,679 INFO L231 Difference]: Finished difference. Result has 281 places, 298 transitions, 4256 flow [2022-09-16 11:40:44,679 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3855, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4256, PETRI_PLACES=281, PETRI_TRANSITIONS=298} [2022-09-16 11:40:44,680 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 205 predicate places. [2022-09-16 11:40:44,680 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 298 transitions, 4256 flow [2022-09-16 11:40:44,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:44,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:44,680 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:44,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-16 11:40:44,681 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:44,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:44,681 INFO L85 PathProgramCache]: Analyzing trace with hash 42079407, now seen corresponding path program 14 times [2022-09-16 11:40:44,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:44,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948716445] [2022-09-16 11:40:44,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:44,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:44,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:44,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:44,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948716445] [2022-09-16 11:40:44,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948716445] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:44,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:44,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:44,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735901363] [2022-09-16 11:40:44,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:44,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:44,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:44,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:44,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:44,924 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:44,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 298 transitions, 4256 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:44,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:44,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:44,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:45,738 INFO L130 PetriNetUnfolder]: 330/2006 cut-off events. [2022-09-16 11:40:45,739 INFO L131 PetriNetUnfolder]: For 16408/16498 co-relation queries the response was YES. [2022-09-16 11:40:45,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8193 conditions, 2006 events. 330/2006 cut-off events. For 16408/16498 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 19902 event pairs, 94 based on Foata normal form. 22/2012 useless extension candidates. Maximal degree in co-relation 8051. Up to 284 conditions per place. [2022-09-16 11:40:45,757 INFO L137 encePairwiseOnDemand]: 61/73 looper letters, 235 selfloop transitions, 48 changer transitions 0/343 dead transitions. [2022-09-16 11:40:45,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 343 transitions, 5169 flow [2022-09-16 11:40:45,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:40:45,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:40:45,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 621 transitions. [2022-09-16 11:40:45,759 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7733499377334994 [2022-09-16 11:40:45,759 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 621 transitions. [2022-09-16 11:40:45,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 621 transitions. [2022-09-16 11:40:45,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:45,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 621 transitions. [2022-09-16 11:40:45,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.45454545454545) internal successors, (621), 11 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:45,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:45,763 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:45,763 INFO L175 Difference]: Start difference. First operand has 281 places, 298 transitions, 4256 flow. Second operand 11 states and 621 transitions. [2022-09-16 11:40:45,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 343 transitions, 5169 flow [2022-09-16 11:40:45,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 343 transitions, 5048 flow, removed 31 selfloop flow, removed 6 redundant places. [2022-09-16 11:40:45,859 INFO L231 Difference]: Finished difference. Result has 287 places, 300 transitions, 4268 flow [2022-09-16 11:40:45,860 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4061, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4268, PETRI_PLACES=287, PETRI_TRANSITIONS=300} [2022-09-16 11:40:45,860 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 211 predicate places. [2022-09-16 11:40:45,860 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 300 transitions, 4268 flow [2022-09-16 11:40:45,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:45,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:45,861 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:45,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-16 11:40:45,861 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:45,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:45,862 INFO L85 PathProgramCache]: Analyzing trace with hash -820669375, now seen corresponding path program 15 times [2022-09-16 11:40:45,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:45,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709684913] [2022-09-16 11:40:45,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:45,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:46,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:46,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:46,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709684913] [2022-09-16 11:40:46,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709684913] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:46,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:46,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:46,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132878601] [2022-09-16 11:40:46,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:46,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:46,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:46,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:46,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:46,071 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:46,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 300 transitions, 4268 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:46,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:46,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:46,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:46,845 INFO L130 PetriNetUnfolder]: 317/1945 cut-off events. [2022-09-16 11:40:46,845 INFO L131 PetriNetUnfolder]: For 15355/15436 co-relation queries the response was YES. [2022-09-16 11:40:46,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7937 conditions, 1945 events. 317/1945 cut-off events. For 15355/15436 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 19121 event pairs, 85 based on Foata normal form. 30/1961 useless extension candidates. Maximal degree in co-relation 7793. Up to 284 conditions per place. [2022-09-16 11:40:46,865 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 242 selfloop transitions, 53 changer transitions 0/355 dead transitions. [2022-09-16 11:40:46,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 355 transitions, 5356 flow [2022-09-16 11:40:46,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-16 11:40:46,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-16 11:40:46,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 676 transitions. [2022-09-16 11:40:46,867 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.771689497716895 [2022-09-16 11:40:46,867 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 676 transitions. [2022-09-16 11:40:46,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 676 transitions. [2022-09-16 11:40:46,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:46,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 676 transitions. [2022-09-16 11:40:46,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 56.333333333333336) internal successors, (676), 12 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:46,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:46,875 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:46,875 INFO L175 Difference]: Start difference. First operand has 287 places, 300 transitions, 4268 flow. Second operand 12 states and 676 transitions. [2022-09-16 11:40:46,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 355 transitions, 5356 flow [2022-09-16 11:40:46,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 355 transitions, 5246 flow, removed 15 selfloop flow, removed 7 redundant places. [2022-09-16 11:40:46,970 INFO L231 Difference]: Finished difference. Result has 296 places, 305 transitions, 4444 flow [2022-09-16 11:40:46,971 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4089, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4444, PETRI_PLACES=296, PETRI_TRANSITIONS=305} [2022-09-16 11:40:46,971 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 220 predicate places. [2022-09-16 11:40:46,971 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 305 transitions, 4444 flow [2022-09-16 11:40:46,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:46,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:46,972 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:46,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-16 11:40:46,972 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:46,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:46,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1942622669, now seen corresponding path program 16 times [2022-09-16 11:40:46,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:46,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969187012] [2022-09-16 11:40:46,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:46,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:47,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:47,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969187012] [2022-09-16 11:40:47,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969187012] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:47,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:47,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:47,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53794044] [2022-09-16 11:40:47,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:47,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:47,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:47,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:47,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:47,113 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:47,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 305 transitions, 4444 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:47,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:47,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:47,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:47,760 INFO L130 PetriNetUnfolder]: 307/1889 cut-off events. [2022-09-16 11:40:47,760 INFO L131 PetriNetUnfolder]: For 14997/15071 co-relation queries the response was YES. [2022-09-16 11:40:47,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7774 conditions, 1889 events. 307/1889 cut-off events. For 14997/15071 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 18332 event pairs, 46 based on Foata normal form. 25/1902 useless extension candidates. Maximal degree in co-relation 7625. Up to 156 conditions per place. [2022-09-16 11:40:47,779 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 200 selfloop transitions, 107 changer transitions 0/367 dead transitions. [2022-09-16 11:40:47,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 367 transitions, 5485 flow [2022-09-16 11:40:47,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-16 11:40:47,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-16 11:40:47,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 939 transitions. [2022-09-16 11:40:47,781 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7566478646253022 [2022-09-16 11:40:47,782 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 939 transitions. [2022-09-16 11:40:47,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 939 transitions. [2022-09-16 11:40:47,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:47,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 939 transitions. [2022-09-16 11:40:47,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 55.23529411764706) internal successors, (939), 17 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:47,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:47,785 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:47,785 INFO L175 Difference]: Start difference. First operand has 296 places, 305 transitions, 4444 flow. Second operand 17 states and 939 transitions. [2022-09-16 11:40:47,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 367 transitions, 5485 flow [2022-09-16 11:40:47,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 367 transitions, 5394 flow, removed 21 selfloop flow, removed 6 redundant places. [2022-09-16 11:40:47,890 INFO L231 Difference]: Finished difference. Result has 308 places, 307 transitions, 4603 flow [2022-09-16 11:40:47,890 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4259, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4603, PETRI_PLACES=308, PETRI_TRANSITIONS=307} [2022-09-16 11:40:47,891 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 232 predicate places. [2022-09-16 11:40:47,891 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 307 transitions, 4603 flow [2022-09-16 11:40:47,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:47,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:47,891 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:47,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-16 11:40:47,891 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:47,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:47,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1935666979, now seen corresponding path program 17 times [2022-09-16 11:40:47,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:47,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498774981] [2022-09-16 11:40:47,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:47,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:48,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:48,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:48,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498774981] [2022-09-16 11:40:48,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498774981] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:48,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:48,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:48,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474380740] [2022-09-16 11:40:48,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:48,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:48,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:48,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:48,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:48,011 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:48,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 307 transitions, 4603 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:48,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:48,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:48,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:48,766 INFO L130 PetriNetUnfolder]: 311/1944 cut-off events. [2022-09-16 11:40:48,766 INFO L131 PetriNetUnfolder]: For 16527/16602 co-relation queries the response was YES. [2022-09-16 11:40:48,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8103 conditions, 1944 events. 311/1944 cut-off events. For 16527/16602 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 19115 event pairs, 45 based on Foata normal form. 39/1971 useless extension candidates. Maximal degree in co-relation 7952. Up to 164 conditions per place. [2022-09-16 11:40:48,786 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 191 selfloop transitions, 118 changer transitions 0/369 dead transitions. [2022-09-16 11:40:48,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 369 transitions, 5744 flow [2022-09-16 11:40:48,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-16 11:40:48,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-16 11:40:48,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 888 transitions. [2022-09-16 11:40:48,788 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7602739726027398 [2022-09-16 11:40:48,789 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 888 transitions. [2022-09-16 11:40:48,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 888 transitions. [2022-09-16 11:40:48,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:48,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 888 transitions. [2022-09-16 11:40:48,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 55.5) internal successors, (888), 16 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:48,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:48,792 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:48,792 INFO L175 Difference]: Start difference. First operand has 308 places, 307 transitions, 4603 flow. Second operand 16 states and 888 transitions. [2022-09-16 11:40:48,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 369 transitions, 5744 flow [2022-09-16 11:40:48,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 369 transitions, 5541 flow, removed 25 selfloop flow, removed 10 redundant places. [2022-09-16 11:40:48,909 INFO L231 Difference]: Finished difference. Result has 316 places, 313 transitions, 4816 flow [2022-09-16 11:40:48,909 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4404, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4816, PETRI_PLACES=316, PETRI_TRANSITIONS=313} [2022-09-16 11:40:48,912 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 240 predicate places. [2022-09-16 11:40:48,912 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 313 transitions, 4816 flow [2022-09-16 11:40:48,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:48,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:48,912 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:48,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-16 11:40:48,912 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:48,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:48,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1029775799, now seen corresponding path program 18 times [2022-09-16 11:40:48,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:48,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036989024] [2022-09-16 11:40:48,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:48,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:49,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:49,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:49,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036989024] [2022-09-16 11:40:49,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036989024] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:49,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:49,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:49,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991121532] [2022-09-16 11:40:49,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:49,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:49,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:49,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:49,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:49,124 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:49,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 313 transitions, 4816 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:49,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:49,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:49,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:49,901 INFO L130 PetriNetUnfolder]: 298/1862 cut-off events. [2022-09-16 11:40:49,901 INFO L131 PetriNetUnfolder]: For 15940/16008 co-relation queries the response was YES. [2022-09-16 11:40:49,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7867 conditions, 1862 events. 298/1862 cut-off events. For 15940/16008 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 18119 event pairs, 79 based on Foata normal form. 26/1878 useless extension candidates. Maximal degree in co-relation 7714. Up to 284 conditions per place. [2022-09-16 11:40:49,920 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 246 selfloop transitions, 51 changer transitions 0/357 dead transitions. [2022-09-16 11:40:49,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 357 transitions, 5674 flow [2022-09-16 11:40:49,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-16 11:40:49,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-16 11:40:49,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 671 transitions. [2022-09-16 11:40:49,931 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7659817351598174 [2022-09-16 11:40:49,931 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 671 transitions. [2022-09-16 11:40:49,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 671 transitions. [2022-09-16 11:40:49,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:49,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 671 transitions. [2022-09-16 11:40:49,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 55.916666666666664) internal successors, (671), 12 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:49,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:49,935 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:49,935 INFO L175 Difference]: Start difference. First operand has 316 places, 313 transitions, 4816 flow. Second operand 12 states and 671 transitions. [2022-09-16 11:40:49,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 357 transitions, 5674 flow [2022-09-16 11:40:50,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 357 transitions, 5459 flow, removed 25 selfloop flow, removed 10 redundant places. [2022-09-16 11:40:50,047 INFO L231 Difference]: Finished difference. Result has 320 places, 313 transitions, 4713 flow [2022-09-16 11:40:50,048 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4486, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4713, PETRI_PLACES=320, PETRI_TRANSITIONS=313} [2022-09-16 11:40:50,048 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 244 predicate places. [2022-09-16 11:40:50,048 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 313 transitions, 4713 flow [2022-09-16 11:40:50,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:50,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:50,049 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:50,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-16 11:40:50,049 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:50,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:50,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1618257, now seen corresponding path program 19 times [2022-09-16 11:40:50,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:50,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074897675] [2022-09-16 11:40:50,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:50,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:50,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:50,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:50,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074897675] [2022-09-16 11:40:50,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074897675] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:50,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:50,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:50,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545365784] [2022-09-16 11:40:50,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:50,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:50,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:50,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:50,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:50,196 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:50,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 313 transitions, 4713 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:50,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:50,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:50,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:50,913 INFO L130 PetriNetUnfolder]: 295/1850 cut-off events. [2022-09-16 11:40:50,913 INFO L131 PetriNetUnfolder]: For 15136/15201 co-relation queries the response was YES. [2022-09-16 11:40:50,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7786 conditions, 1850 events. 295/1850 cut-off events. For 15136/15201 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 17947 event pairs, 25 based on Foata normal form. 41/1879 useless extension candidates. Maximal degree in co-relation 7629. Up to 273 conditions per place. [2022-09-16 11:40:50,929 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 150 selfloop transitions, 150 changer transitions 0/360 dead transitions. [2022-09-16 11:40:50,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 360 transitions, 5813 flow [2022-09-16 11:40:50,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:40:50,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:40:50,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 817 transitions. [2022-09-16 11:40:50,931 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7461187214611872 [2022-09-16 11:40:50,931 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 817 transitions. [2022-09-16 11:40:50,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 817 transitions. [2022-09-16 11:40:50,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:50,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 817 transitions. [2022-09-16 11:40:50,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 54.46666666666667) internal successors, (817), 15 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:50,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:50,933 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:50,933 INFO L175 Difference]: Start difference. First operand has 320 places, 313 transitions, 4713 flow. Second operand 15 states and 817 transitions. [2022-09-16 11:40:50,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 360 transitions, 5813 flow [2022-09-16 11:40:51,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 360 transitions, 5683 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-09-16 11:40:51,011 INFO L231 Difference]: Finished difference. Result has 330 places, 318 transitions, 5054 flow [2022-09-16 11:40:51,011 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4584, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5054, PETRI_PLACES=330, PETRI_TRANSITIONS=318} [2022-09-16 11:40:51,012 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 254 predicate places. [2022-09-16 11:40:51,012 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 318 transitions, 5054 flow [2022-09-16 11:40:51,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:51,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:51,012 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:51,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-09-16 11:40:51,012 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:51,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:51,013 INFO L85 PathProgramCache]: Analyzing trace with hash 728225083, now seen corresponding path program 20 times [2022-09-16 11:40:51,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:51,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224894003] [2022-09-16 11:40:51,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:51,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:51,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:51,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224894003] [2022-09-16 11:40:51,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224894003] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:51,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:51,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:51,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823576517] [2022-09-16 11:40:51,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:51,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:51,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:51,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:51,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:51,164 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:51,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 318 transitions, 5054 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:51,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:51,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:51,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:51,994 INFO L130 PetriNetUnfolder]: 285/1779 cut-off events. [2022-09-16 11:40:51,995 INFO L131 PetriNetUnfolder]: For 15641/15703 co-relation queries the response was YES. [2022-09-16 11:40:52,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7735 conditions, 1779 events. 285/1779 cut-off events. For 15641/15703 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 17039 event pairs, 25 based on Foata normal form. 35/1804 useless extension candidates. Maximal degree in co-relation 7575. Up to 273 conditions per place. [2022-09-16 11:40:52,015 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 153 selfloop transitions, 146 changer transitions 0/359 dead transitions. [2022-09-16 11:40:52,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 359 transitions, 6036 flow [2022-09-16 11:40:52,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-16 11:40:52,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-16 11:40:52,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 864 transitions. [2022-09-16 11:40:52,017 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7397260273972602 [2022-09-16 11:40:52,017 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 864 transitions. [2022-09-16 11:40:52,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 864 transitions. [2022-09-16 11:40:52,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:52,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 864 transitions. [2022-09-16 11:40:52,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 54.0) internal successors, (864), 16 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:52,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:52,021 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:52,021 INFO L175 Difference]: Start difference. First operand has 330 places, 318 transitions, 5054 flow. Second operand 16 states and 864 transitions. [2022-09-16 11:40:52,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 359 transitions, 6036 flow [2022-09-16 11:40:52,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 359 transitions, 5713 flow, removed 43 selfloop flow, removed 9 redundant places. [2022-09-16 11:40:52,131 INFO L231 Difference]: Finished difference. Result has 337 places, 320 transitions, 5069 flow [2022-09-16 11:40:52,131 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4682, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5069, PETRI_PLACES=337, PETRI_TRANSITIONS=320} [2022-09-16 11:40:52,132 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 261 predicate places. [2022-09-16 11:40:52,132 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 320 transitions, 5069 flow [2022-09-16 11:40:52,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:52,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:52,133 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:52,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-09-16 11:40:52,133 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:52,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:52,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1684303669, now seen corresponding path program 21 times [2022-09-16 11:40:52,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:52,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639639801] [2022-09-16 11:40:52,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:52,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:52,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:52,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:52,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639639801] [2022-09-16 11:40:52,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639639801] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:52,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:52,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:52,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583654664] [2022-09-16 11:40:52,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:52,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:52,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:52,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:52,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:52,267 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:52,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 320 transitions, 5069 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:52,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:52,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:52,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:53,090 INFO L130 PetriNetUnfolder]: 289/1831 cut-off events. [2022-09-16 11:40:53,091 INFO L131 PetriNetUnfolder]: For 15674/15747 co-relation queries the response was YES. [2022-09-16 11:40:53,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7907 conditions, 1831 events. 289/1831 cut-off events. For 15674/15747 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 17726 event pairs, 32 based on Foata normal form. 45/1868 useless extension candidates. Maximal degree in co-relation 7745. Up to 252 conditions per place. [2022-09-16 11:40:53,120 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 181 selfloop transitions, 128 changer transitions 0/369 dead transitions. [2022-09-16 11:40:53,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 369 transitions, 6118 flow [2022-09-16 11:40:53,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:40:53,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:40:53,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 822 transitions. [2022-09-16 11:40:53,122 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7506849315068493 [2022-09-16 11:40:53,122 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 822 transitions. [2022-09-16 11:40:53,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 822 transitions. [2022-09-16 11:40:53,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:53,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 822 transitions. [2022-09-16 11:40:53,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 54.8) internal successors, (822), 15 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:53,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:53,126 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:53,126 INFO L175 Difference]: Start difference. First operand has 337 places, 320 transitions, 5069 flow. Second operand 15 states and 822 transitions. [2022-09-16 11:40:53,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 369 transitions, 6118 flow [2022-09-16 11:40:53,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 369 transitions, 5925 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-09-16 11:40:53,257 INFO L231 Difference]: Finished difference. Result has 346 places, 327 transitions, 5352 flow [2022-09-16 11:40:53,257 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4882, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5352, PETRI_PLACES=346, PETRI_TRANSITIONS=327} [2022-09-16 11:40:53,257 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 270 predicate places. [2022-09-16 11:40:53,258 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 327 transitions, 5352 flow [2022-09-16 11:40:53,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:53,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:53,258 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:53,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-09-16 11:40:53,258 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:53,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:53,259 INFO L85 PathProgramCache]: Analyzing trace with hash -683506195, now seen corresponding path program 22 times [2022-09-16 11:40:53,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:53,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428865520] [2022-09-16 11:40:53,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:53,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:53,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:53,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:53,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428865520] [2022-09-16 11:40:53,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428865520] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:53,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:53,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:53,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068845063] [2022-09-16 11:40:53,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:53,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:53,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:53,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:53,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:53,504 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:53,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 327 transitions, 5352 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:53,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:53,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:53,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:54,316 INFO L130 PetriNetUnfolder]: 310/2003 cut-off events. [2022-09-16 11:40:54,316 INFO L131 PetriNetUnfolder]: For 18598/18674 co-relation queries the response was YES. [2022-09-16 11:40:54,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8686 conditions, 2003 events. 310/2003 cut-off events. For 18598/18674 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 20064 event pairs, 69 based on Foata normal form. 21/2013 useless extension candidates. Maximal degree in co-relation 8519. Up to 401 conditions per place. [2022-09-16 11:40:54,341 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 273 selfloop transitions, 53 changer transitions 0/386 dead transitions. [2022-09-16 11:40:54,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 386 transitions, 6663 flow [2022-09-16 11:40:54,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:40:54,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:40:54,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 623 transitions. [2022-09-16 11:40:54,343 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.775840597758406 [2022-09-16 11:40:54,343 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 623 transitions. [2022-09-16 11:40:54,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 623 transitions. [2022-09-16 11:40:54,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:54,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 623 transitions. [2022-09-16 11:40:54,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.63636363636363) internal successors, (623), 11 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:54,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:54,345 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:54,345 INFO L175 Difference]: Start difference. First operand has 346 places, 327 transitions, 5352 flow. Second operand 11 states and 623 transitions. [2022-09-16 11:40:54,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 386 transitions, 6663 flow [2022-09-16 11:40:54,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 386 transitions, 6396 flow, removed 45 selfloop flow, removed 8 redundant places. [2022-09-16 11:40:54,453 INFO L231 Difference]: Finished difference. Result has 352 places, 336 transitions, 5456 flow [2022-09-16 11:40:54,453 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5146, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5456, PETRI_PLACES=352, PETRI_TRANSITIONS=336} [2022-09-16 11:40:54,454 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 276 predicate places. [2022-09-16 11:40:54,454 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 336 transitions, 5456 flow [2022-09-16 11:40:54,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:54,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:54,454 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:54,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-09-16 11:40:54,454 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:54,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:54,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1081385977, now seen corresponding path program 23 times [2022-09-16 11:40:54,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:54,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030944939] [2022-09-16 11:40:54,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:54,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:54,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:54,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:54,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030944939] [2022-09-16 11:40:54,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030944939] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:54,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:54,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:54,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506823601] [2022-09-16 11:40:54,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:54,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:54,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:54,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:54,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:54,669 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:54,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 336 transitions, 5456 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:54,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:54,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:54,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:55,383 INFO L130 PetriNetUnfolder]: 310/2005 cut-off events. [2022-09-16 11:40:55,383 INFO L131 PetriNetUnfolder]: For 17848/17924 co-relation queries the response was YES. [2022-09-16 11:40:55,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8623 conditions, 2005 events. 310/2005 cut-off events. For 17848/17924 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 20065 event pairs, 71 based on Foata normal form. 24/2018 useless extension candidates. Maximal degree in co-relation 8452. Up to 401 conditions per place. [2022-09-16 11:40:55,408 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 258 selfloop transitions, 62 changer transitions 0/380 dead transitions. [2022-09-16 11:40:55,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 380 transitions, 6544 flow [2022-09-16 11:40:55,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:40:55,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:40:55,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 615 transitions. [2022-09-16 11:40:55,410 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7658779576587795 [2022-09-16 11:40:55,410 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 615 transitions. [2022-09-16 11:40:55,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 615 transitions. [2022-09-16 11:40:55,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:55,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 615 transitions. [2022-09-16 11:40:55,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.90909090909091) internal successors, (615), 11 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:55,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:55,413 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:55,413 INFO L175 Difference]: Start difference. First operand has 352 places, 336 transitions, 5456 flow. Second operand 11 states and 615 transitions. [2022-09-16 11:40:55,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 380 transitions, 6544 flow [2022-09-16 11:40:55,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 380 transitions, 6388 flow, removed 13 selfloop flow, removed 7 redundant places. [2022-09-16 11:40:55,521 INFO L231 Difference]: Finished difference. Result has 359 places, 342 transitions, 5572 flow [2022-09-16 11:40:55,522 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5301, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5572, PETRI_PLACES=359, PETRI_TRANSITIONS=342} [2022-09-16 11:40:55,522 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 283 predicate places. [2022-09-16 11:40:55,522 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 342 transitions, 5572 flow [2022-09-16 11:40:55,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:55,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:55,522 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:55,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-09-16 11:40:55,523 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:55,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:55,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1924998837, now seen corresponding path program 24 times [2022-09-16 11:40:55,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:55,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204945617] [2022-09-16 11:40:55,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:55,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:55,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:55,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:55,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204945617] [2022-09-16 11:40:55,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204945617] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:55,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:55,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:55,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864690477] [2022-09-16 11:40:55,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:55,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:55,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:55,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:55,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:55,753 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:55,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 342 transitions, 5572 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:55,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:55,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:55,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:56,483 INFO L130 PetriNetUnfolder]: 297/1938 cut-off events. [2022-09-16 11:40:56,483 INFO L131 PetriNetUnfolder]: For 17166/17239 co-relation queries the response was YES. [2022-09-16 11:40:56,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8370 conditions, 1938 events. 297/1938 cut-off events. For 17166/17239 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 19292 event pairs, 65 based on Foata normal form. 27/1957 useless extension candidates. Maximal degree in co-relation 8195. Up to 401 conditions per place. [2022-09-16 11:40:56,502 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 268 selfloop transitions, 56 changer transitions 0/384 dead transitions. [2022-09-16 11:40:56,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 384 transitions, 6556 flow [2022-09-16 11:40:56,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:40:56,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:40:56,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 620 transitions. [2022-09-16 11:40:56,503 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.772104607721046 [2022-09-16 11:40:56,503 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 620 transitions. [2022-09-16 11:40:56,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 620 transitions. [2022-09-16 11:40:56,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:56,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 620 transitions. [2022-09-16 11:40:56,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.36363636363637) internal successors, (620), 11 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:56,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:56,506 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:56,506 INFO L175 Difference]: Start difference. First operand has 359 places, 342 transitions, 5572 flow. Second operand 11 states and 620 transitions. [2022-09-16 11:40:56,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 384 transitions, 6556 flow [2022-09-16 11:40:56,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 384 transitions, 6443 flow, removed 15 selfloop flow, removed 6 redundant places. [2022-09-16 11:40:56,598 INFO L231 Difference]: Finished difference. Result has 366 places, 345 transitions, 5658 flow [2022-09-16 11:40:56,598 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5384, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5658, PETRI_PLACES=366, PETRI_TRANSITIONS=345} [2022-09-16 11:40:56,599 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 290 predicate places. [2022-09-16 11:40:56,599 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 345 transitions, 5658 flow [2022-09-16 11:40:56,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:56,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:56,599 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:56,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-09-16 11:40:56,599 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:56,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:56,600 INFO L85 PathProgramCache]: Analyzing trace with hash 354779151, now seen corresponding path program 25 times [2022-09-16 11:40:56,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:56,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746805933] [2022-09-16 11:40:56,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:56,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:56,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:56,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:56,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746805933] [2022-09-16 11:40:56,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746805933] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:56,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:56,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:56,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439271981] [2022-09-16 11:40:56,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:56,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:56,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:56,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:56,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:56,800 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:56,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 345 transitions, 5658 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:56,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:56,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:56,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:57,514 INFO L130 PetriNetUnfolder]: 284/1860 cut-off events. [2022-09-16 11:40:57,515 INFO L131 PetriNetUnfolder]: For 16232/16302 co-relation queries the response was YES. [2022-09-16 11:40:57,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8099 conditions, 1860 events. 284/1860 cut-off events. For 16232/16302 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 18266 event pairs, 63 based on Foata normal form. 27/1881 useless extension candidates. Maximal degree in co-relation 7921. Up to 401 conditions per place. [2022-09-16 11:40:57,532 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 259 selfloop transitions, 60 changer transitions 0/379 dead transitions. [2022-09-16 11:40:57,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 379 transitions, 6484 flow [2022-09-16 11:40:57,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:40:57,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:40:57,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 618 transitions. [2022-09-16 11:40:57,534 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7696139476961394 [2022-09-16 11:40:57,534 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 618 transitions. [2022-09-16 11:40:57,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 618 transitions. [2022-09-16 11:40:57,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:57,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 618 transitions. [2022-09-16 11:40:57,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.18181818181818) internal successors, (618), 11 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:57,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:57,536 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:57,536 INFO L175 Difference]: Start difference. First operand has 366 places, 345 transitions, 5658 flow. Second operand 11 states and 618 transitions. [2022-09-16 11:40:57,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 379 transitions, 6484 flow [2022-09-16 11:40:57,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 379 transitions, 6376 flow, removed 7 selfloop flow, removed 9 redundant places. [2022-09-16 11:40:57,645 INFO L231 Difference]: Finished difference. Result has 369 places, 344 transitions, 5642 flow [2022-09-16 11:40:57,646 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5443, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5642, PETRI_PLACES=369, PETRI_TRANSITIONS=344} [2022-09-16 11:40:57,646 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 293 predicate places. [2022-09-16 11:40:57,646 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 344 transitions, 5642 flow [2022-09-16 11:40:57,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:57,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:57,647 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:57,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-09-16 11:40:57,647 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:57,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:57,647 INFO L85 PathProgramCache]: Analyzing trace with hash -884975625, now seen corresponding path program 26 times [2022-09-16 11:40:57,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:57,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390900809] [2022-09-16 11:40:57,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:57,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:57,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:57,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:57,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390900809] [2022-09-16 11:40:57,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390900809] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:57,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:57,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:57,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976965496] [2022-09-16 11:40:57,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:57,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:57,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:57,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:57,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:57,770 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:57,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 344 transitions, 5642 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:57,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:57,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:57,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:58,473 INFO L130 PetriNetUnfolder]: 292/1946 cut-off events. [2022-09-16 11:40:58,473 INFO L131 PetriNetUnfolder]: For 16725/16801 co-relation queries the response was YES. [2022-09-16 11:40:58,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8425 conditions, 1946 events. 292/1946 cut-off events. For 16725/16801 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 19418 event pairs, 42 based on Foata normal form. 27/1967 useless extension candidates. Maximal degree in co-relation 8246. Up to 303 conditions per place. [2022-09-16 11:40:58,538 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 253 selfloop transitions, 101 changer transitions 0/414 dead transitions. [2022-09-16 11:40:58,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 414 transitions, 7011 flow [2022-09-16 11:40:58,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:40:58,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:40:58,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 836 transitions. [2022-09-16 11:40:58,539 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7634703196347032 [2022-09-16 11:40:58,540 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 836 transitions. [2022-09-16 11:40:58,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 836 transitions. [2022-09-16 11:40:58,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:58,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 836 transitions. [2022-09-16 11:40:58,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 55.733333333333334) internal successors, (836), 15 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:58,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:58,542 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:58,542 INFO L175 Difference]: Start difference. First operand has 369 places, 344 transitions, 5642 flow. Second operand 15 states and 836 transitions. [2022-09-16 11:40:58,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 414 transitions, 7011 flow [2022-09-16 11:40:58,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 414 transitions, 6904 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-09-16 11:40:58,656 INFO L231 Difference]: Finished difference. Result has 384 places, 357 transitions, 6045 flow [2022-09-16 11:40:58,656 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5539, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6045, PETRI_PLACES=384, PETRI_TRANSITIONS=357} [2022-09-16 11:40:58,657 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 308 predicate places. [2022-09-16 11:40:58,657 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 357 transitions, 6045 flow [2022-09-16 11:40:58,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:58,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:58,657 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:58,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-09-16 11:40:58,657 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:58,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:58,658 INFO L85 PathProgramCache]: Analyzing trace with hash 897919359, now seen corresponding path program 27 times [2022-09-16 11:40:58,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:58,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760609753] [2022-09-16 11:40:58,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:58,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:58,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:58,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760609753] [2022-09-16 11:40:58,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760609753] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:58,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:58,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:58,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79153745] [2022-09-16 11:40:58,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:58,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:58,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:58,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:58,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:58,792 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:58,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 357 transitions, 6045 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:58,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:58,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:58,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:59,623 INFO L130 PetriNetUnfolder]: 313/2082 cut-off events. [2022-09-16 11:40:59,623 INFO L131 PetriNetUnfolder]: For 19461/19540 co-relation queries the response was YES. [2022-09-16 11:40:59,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9200 conditions, 2082 events. 313/2082 cut-off events. For 19461/19540 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 21098 event pairs, 38 based on Foata normal form. 32/2105 useless extension candidates. Maximal degree in co-relation 9014. Up to 303 conditions per place. [2022-09-16 11:40:59,653 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 230 selfloop transitions, 131 changer transitions 0/421 dead transitions. [2022-09-16 11:40:59,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 421 transitions, 7394 flow [2022-09-16 11:40:59,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-16 11:40:59,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-16 11:40:59,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 931 transitions. [2022-09-16 11:40:59,654 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.750201450443191 [2022-09-16 11:40:59,654 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 931 transitions. [2022-09-16 11:40:59,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 931 transitions. [2022-09-16 11:40:59,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:59,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 931 transitions. [2022-09-16 11:40:59,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.76470588235294) internal successors, (931), 17 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:59,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:59,657 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:59,657 INFO L175 Difference]: Start difference. First operand has 384 places, 357 transitions, 6045 flow. Second operand 17 states and 931 transitions. [2022-09-16 11:40:59,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 421 transitions, 7394 flow [2022-09-16 11:40:59,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 421 transitions, 7209 flow, removed 44 selfloop flow, removed 8 redundant places. [2022-09-16 11:40:59,785 INFO L231 Difference]: Finished difference. Result has 396 places, 369 transitions, 6446 flow [2022-09-16 11:40:59,786 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5888, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6446, PETRI_PLACES=396, PETRI_TRANSITIONS=369} [2022-09-16 11:40:59,786 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 320 predicate places. [2022-09-16 11:40:59,787 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 369 transitions, 6446 flow [2022-09-16 11:40:59,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:59,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:59,787 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:59,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-09-16 11:40:59,787 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:40:59,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:59,788 INFO L85 PathProgramCache]: Analyzing trace with hash -173935847, now seen corresponding path program 28 times [2022-09-16 11:40:59,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:59,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562439618] [2022-09-16 11:40:59,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:59,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:59,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:59,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:59,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562439618] [2022-09-16 11:40:59,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562439618] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:59,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:59,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:40:59,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426858758] [2022-09-16 11:40:59,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:59,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:40:59,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:59,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:40:59,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:40:59,916 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:40:59,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 369 transitions, 6446 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:59,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:59,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:40:59,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:00,719 INFO L130 PetriNetUnfolder]: 343/2334 cut-off events. [2022-09-16 11:41:00,719 INFO L131 PetriNetUnfolder]: For 23410/23492 co-relation queries the response was YES. [2022-09-16 11:41:00,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10326 conditions, 2334 events. 343/2334 cut-off events. For 23410/23492 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 24465 event pairs, 47 based on Foata normal form. 21/2343 useless extension candidates. Maximal degree in co-relation 10138. Up to 303 conditions per place. [2022-09-16 11:41:00,748 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 286 selfloop transitions, 114 changer transitions 0/460 dead transitions. [2022-09-16 11:41:00,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 460 transitions, 8287 flow [2022-09-16 11:41:00,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-16 11:41:00,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-16 11:41:00,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 898 transitions. [2022-09-16 11:41:00,750 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7688356164383562 [2022-09-16 11:41:00,750 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 898 transitions. [2022-09-16 11:41:00,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 898 transitions. [2022-09-16 11:41:00,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:00,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 898 transitions. [2022-09-16 11:41:00,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 56.125) internal successors, (898), 16 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:00,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:00,753 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:00,753 INFO L175 Difference]: Start difference. First operand has 396 places, 369 transitions, 6446 flow. Second operand 16 states and 898 transitions. [2022-09-16 11:41:00,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 460 transitions, 8287 flow [2022-09-16 11:41:00,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 460 transitions, 7921 flow, removed 31 selfloop flow, removed 10 redundant places. [2022-09-16 11:41:00,887 INFO L231 Difference]: Finished difference. Result has 407 places, 386 transitions, 6772 flow [2022-09-16 11:41:00,888 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6121, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6772, PETRI_PLACES=407, PETRI_TRANSITIONS=386} [2022-09-16 11:41:00,888 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 331 predicate places. [2022-09-16 11:41:00,888 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 386 transitions, 6772 flow [2022-09-16 11:41:00,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:00,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:00,889 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:00,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-09-16 11:41:00,889 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:41:00,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:00,889 INFO L85 PathProgramCache]: Analyzing trace with hash -954566733, now seen corresponding path program 29 times [2022-09-16 11:41:00,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:00,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123227701] [2022-09-16 11:41:00,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:00,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:01,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:01,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:01,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123227701] [2022-09-16 11:41:01,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123227701] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:01,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:01,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:41:01,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387713174] [2022-09-16 11:41:01,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:01,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:41:01,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:01,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:41:01,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:41:01,072 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:41:01,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 386 transitions, 6772 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:01,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:01,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:41:01,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:01,914 INFO L130 PetriNetUnfolder]: 347/2377 cut-off events. [2022-09-16 11:41:01,914 INFO L131 PetriNetUnfolder]: For 23625/23715 co-relation queries the response was YES. [2022-09-16 11:41:01,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10484 conditions, 2377 events. 347/2377 cut-off events. For 23625/23715 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 25179 event pairs, 69 based on Foata normal form. 32/2399 useless extension candidates. Maximal degree in co-relation 10290. Up to 399 conditions per place. [2022-09-16 11:41:01,944 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 318 selfloop transitions, 62 changer transitions 0/440 dead transitions. [2022-09-16 11:41:01,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 440 transitions, 8146 flow [2022-09-16 11:41:01,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-16 11:41:01,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-16 11:41:01,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 672 transitions. [2022-09-16 11:41:01,946 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7671232876712328 [2022-09-16 11:41:01,946 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 672 transitions. [2022-09-16 11:41:01,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 672 transitions. [2022-09-16 11:41:01,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:01,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 672 transitions. [2022-09-16 11:41:01,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 56.0) internal successors, (672), 12 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:01,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:01,948 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:01,948 INFO L175 Difference]: Start difference. First operand has 407 places, 386 transitions, 6772 flow. Second operand 12 states and 672 transitions. [2022-09-16 11:41:01,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 440 transitions, 8146 flow [2022-09-16 11:41:02,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 440 transitions, 7875 flow, removed 30 selfloop flow, removed 8 redundant places. [2022-09-16 11:41:02,165 INFO L231 Difference]: Finished difference. Result has 416 places, 396 transitions, 6936 flow [2022-09-16 11:41:02,166 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6504, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6936, PETRI_PLACES=416, PETRI_TRANSITIONS=396} [2022-09-16 11:41:02,166 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 340 predicate places. [2022-09-16 11:41:02,166 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 396 transitions, 6936 flow [2022-09-16 11:41:02,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:02,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:02,167 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:02,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-09-16 11:41:02,167 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:41:02,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:02,167 INFO L85 PathProgramCache]: Analyzing trace with hash -776853539, now seen corresponding path program 30 times [2022-09-16 11:41:02,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:02,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526559071] [2022-09-16 11:41:02,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:02,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:02,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:02,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:02,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526559071] [2022-09-16 11:41:02,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526559071] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:02,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:02,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:41:02,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972791365] [2022-09-16 11:41:02,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:02,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:41:02,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:02,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:41:02,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:41:02,376 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:41:02,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 396 transitions, 6936 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:02,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:02,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:41:02,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:03,242 INFO L130 PetriNetUnfolder]: 347/2391 cut-off events. [2022-09-16 11:41:03,242 INFO L131 PetriNetUnfolder]: For 23718/23804 co-relation queries the response was YES. [2022-09-16 11:41:03,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10559 conditions, 2391 events. 347/2391 cut-off events. For 23718/23804 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 25350 event pairs, 73 based on Foata normal form. 18/2399 useless extension candidates. Maximal degree in co-relation 10359. Up to 399 conditions per place. [2022-09-16 11:41:03,270 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 339 selfloop transitions, 47 changer transitions 0/446 dead transitions. [2022-09-16 11:41:03,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 446 transitions, 8210 flow [2022-09-16 11:41:03,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:41:03,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:41:03,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 622 transitions. [2022-09-16 11:41:03,271 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7745952677459527 [2022-09-16 11:41:03,271 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 622 transitions. [2022-09-16 11:41:03,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 622 transitions. [2022-09-16 11:41:03,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:03,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 622 transitions. [2022-09-16 11:41:03,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.54545454545455) internal successors, (622), 11 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:03,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:03,273 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:03,273 INFO L175 Difference]: Start difference. First operand has 416 places, 396 transitions, 6936 flow. Second operand 11 states and 622 transitions. [2022-09-16 11:41:03,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 446 transitions, 8210 flow [2022-09-16 11:41:03,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 446 transitions, 8096 flow, removed 33 selfloop flow, removed 5 redundant places. [2022-09-16 11:41:03,412 INFO L231 Difference]: Finished difference. Result has 425 places, 402 transitions, 7113 flow [2022-09-16 11:41:03,413 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6822, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7113, PETRI_PLACES=425, PETRI_TRANSITIONS=402} [2022-09-16 11:41:03,413 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 349 predicate places. [2022-09-16 11:41:03,413 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 402 transitions, 7113 flow [2022-09-16 11:41:03,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:03,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:03,413 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:03,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-09-16 11:41:03,414 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:41:03,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:03,414 INFO L85 PathProgramCache]: Analyzing trace with hash -99193935, now seen corresponding path program 31 times [2022-09-16 11:41:03,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:03,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246606531] [2022-09-16 11:41:03,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:03,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:03,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:03,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:03,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246606531] [2022-09-16 11:41:03,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246606531] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:03,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:03,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-16 11:41:03,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094571086] [2022-09-16 11:41:03,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:03,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-16 11:41:03,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:03,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-16 11:41:03,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:41:03,516 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:41:03,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 402 transitions, 7113 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:03,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:03,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:41:03,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:04,189 INFO L130 PetriNetUnfolder]: 334/2313 cut-off events. [2022-09-16 11:41:04,189 INFO L131 PetriNetUnfolder]: For 23497/23582 co-relation queries the response was YES. [2022-09-16 11:41:04,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10298 conditions, 2313 events. 334/2313 cut-off events. For 23497/23582 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 24360 event pairs, 74 based on Foata normal form. 19/2324 useless extension candidates. Maximal degree in co-relation 10094. Up to 399 conditions per place. [2022-09-16 11:41:04,215 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 343 selfloop transitions, 44 changer transitions 0/447 dead transitions. [2022-09-16 11:41:04,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 447 transitions, 8252 flow [2022-09-16 11:41:04,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:41:04,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:41:04,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 625 transitions. [2022-09-16 11:41:04,217 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7783312577833126 [2022-09-16 11:41:04,217 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 625 transitions. [2022-09-16 11:41:04,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 625 transitions. [2022-09-16 11:41:04,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:04,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 625 transitions. [2022-09-16 11:41:04,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.81818181818182) internal successors, (625), 11 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:04,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:04,218 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:04,218 INFO L175 Difference]: Start difference. First operand has 425 places, 402 transitions, 7113 flow. Second operand 11 states and 625 transitions. [2022-09-16 11:41:04,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 447 transitions, 8252 flow [2022-09-16 11:41:04,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 447 transitions, 8095 flow, removed 54 selfloop flow, removed 6 redundant places. [2022-09-16 11:41:04,376 INFO L231 Difference]: Finished difference. Result has 432 places, 403 transitions, 7099 flow [2022-09-16 11:41:04,376 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6924, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7099, PETRI_PLACES=432, PETRI_TRANSITIONS=403} [2022-09-16 11:41:04,377 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 356 predicate places. [2022-09-16 11:41:04,377 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 403 transitions, 7099 flow [2022-09-16 11:41:04,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:04,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:04,377 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:04,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-09-16 11:41:04,377 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:41:04,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:04,378 INFO L85 PathProgramCache]: Analyzing trace with hash -818424777, now seen corresponding path program 32 times [2022-09-16 11:41:04,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:04,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284218210] [2022-09-16 11:41:04,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:04,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:04,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:04,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:04,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284218210] [2022-09-16 11:41:04,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284218210] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:04,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:04,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:41:04,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763592485] [2022-09-16 11:41:04,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:04,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:41:04,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:04,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:41:04,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:41:04,591 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:41:04,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 403 transitions, 7099 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:04,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:04,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:41:04,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:05,468 INFO L130 PetriNetUnfolder]: 321/2231 cut-off events. [2022-09-16 11:41:05,469 INFO L131 PetriNetUnfolder]: For 21510/21594 co-relation queries the response was YES. [2022-09-16 11:41:05,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9960 conditions, 2231 events. 321/2231 cut-off events. For 21510/21594 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 23311 event pairs, 67 based on Foata normal form. 36/2261 useless extension candidates. Maximal degree in co-relation 9753. Up to 399 conditions per place. [2022-09-16 11:41:05,494 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 301 selfloop transitions, 73 changer transitions 0/434 dead transitions. [2022-09-16 11:41:05,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 434 transitions, 8013 flow [2022-09-16 11:41:05,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:41:05,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:41:05,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 617 transitions. [2022-09-16 11:41:05,496 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7683686176836861 [2022-09-16 11:41:05,496 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 617 transitions. [2022-09-16 11:41:05,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 617 transitions. [2022-09-16 11:41:05,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:05,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 617 transitions. [2022-09-16 11:41:05,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.09090909090909) internal successors, (617), 11 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:05,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:05,498 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:05,498 INFO L175 Difference]: Start difference. First operand has 432 places, 403 transitions, 7099 flow. Second operand 11 states and 617 transitions. [2022-09-16 11:41:05,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 434 transitions, 8013 flow [2022-09-16 11:41:05,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 434 transitions, 7934 flow, removed 8 selfloop flow, removed 7 redundant places. [2022-09-16 11:41:05,656 INFO L231 Difference]: Finished difference. Result has 437 places, 403 transitions, 7159 flow [2022-09-16 11:41:05,656 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6919, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7159, PETRI_PLACES=437, PETRI_TRANSITIONS=403} [2022-09-16 11:41:05,657 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 361 predicate places. [2022-09-16 11:41:05,657 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 403 transitions, 7159 flow [2022-09-16 11:41:05,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:05,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:05,657 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:05,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-09-16 11:41:05,658 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:41:05,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:05,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1557484425, now seen corresponding path program 33 times [2022-09-16 11:41:05,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:05,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140016837] [2022-09-16 11:41:05,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:05,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:05,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:05,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:05,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140016837] [2022-09-16 11:41:05,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140016837] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:05,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:05,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:41:05,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929881455] [2022-09-16 11:41:05,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:05,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:41:05,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:05,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:41:05,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:41:05,877 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:41:05,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 403 transitions, 7159 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:05,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:05,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:41:05,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:06,835 INFO L130 PetriNetUnfolder]: 321/2243 cut-off events. [2022-09-16 11:41:06,835 INFO L131 PetriNetUnfolder]: For 22045/22129 co-relation queries the response was YES. [2022-09-16 11:41:06,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10082 conditions, 2243 events. 321/2243 cut-off events. For 22045/22129 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23426 event pairs, 61 based on Foata normal form. 21/2258 useless extension candidates. Maximal degree in co-relation 9872. Up to 399 conditions per place. [2022-09-16 11:41:06,859 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 338 selfloop transitions, 51 changer transitions 0/449 dead transitions. [2022-09-16 11:41:06,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 449 transitions, 8378 flow [2022-09-16 11:41:06,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:41:06,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:41:06,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 621 transitions. [2022-09-16 11:41:06,861 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7733499377334994 [2022-09-16 11:41:06,861 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 621 transitions. [2022-09-16 11:41:06,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 621 transitions. [2022-09-16 11:41:06,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:06,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 621 transitions. [2022-09-16 11:41:06,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.45454545454545) internal successors, (621), 11 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:06,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:06,863 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:06,863 INFO L175 Difference]: Start difference. First operand has 437 places, 403 transitions, 7159 flow. Second operand 11 states and 621 transitions. [2022-09-16 11:41:06,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 449 transitions, 8378 flow [2022-09-16 11:41:07,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 449 transitions, 8244 flow, removed 5 selfloop flow, removed 7 redundant places. [2022-09-16 11:41:07,023 INFO L231 Difference]: Finished difference. Result has 444 places, 409 transitions, 7330 flow [2022-09-16 11:41:07,024 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7033, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7330, PETRI_PLACES=444, PETRI_TRANSITIONS=409} [2022-09-16 11:41:07,024 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 368 predicate places. [2022-09-16 11:41:07,024 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 409 transitions, 7330 flow [2022-09-16 11:41:07,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:07,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:07,025 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:07,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-09-16 11:41:07,025 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:41:07,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:07,025 INFO L85 PathProgramCache]: Analyzing trace with hash -879824821, now seen corresponding path program 34 times [2022-09-16 11:41:07,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:07,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107500794] [2022-09-16 11:41:07,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:07,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:07,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:07,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:07,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107500794] [2022-09-16 11:41:07,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107500794] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:07,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:07,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-16 11:41:07,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918074091] [2022-09-16 11:41:07,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:07,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-16 11:41:07,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:07,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-16 11:41:07,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:41:07,142 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:41:07,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 409 transitions, 7330 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:07,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:07,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:41:07,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:07,907 INFO L130 PetriNetUnfolder]: 308/2176 cut-off events. [2022-09-16 11:41:07,907 INFO L131 PetriNetUnfolder]: For 21694/21775 co-relation queries the response was YES. [2022-09-16 11:41:07,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9805 conditions, 2176 events. 308/2176 cut-off events. For 21694/21775 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 22604 event pairs, 61 based on Foata normal form. 22/2194 useless extension candidates. Maximal degree in co-relation 9591. Up to 399 conditions per place. [2022-09-16 11:41:07,945 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 340 selfloop transitions, 50 changer transitions 0/450 dead transitions. [2022-09-16 11:41:07,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 450 transitions, 8377 flow [2022-09-16 11:41:07,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:41:07,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:41:07,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 624 transitions. [2022-09-16 11:41:07,947 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7770859277708593 [2022-09-16 11:41:07,947 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 624 transitions. [2022-09-16 11:41:07,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 624 transitions. [2022-09-16 11:41:07,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:07,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 624 transitions. [2022-09-16 11:41:07,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.72727272727273) internal successors, (624), 11 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:07,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:07,948 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:07,949 INFO L175 Difference]: Start difference. First operand has 444 places, 409 transitions, 7330 flow. Second operand 11 states and 624 transitions. [2022-09-16 11:41:07,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 450 transitions, 8377 flow [2022-09-16 11:41:08,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 450 transitions, 8184 flow, removed 62 selfloop flow, removed 6 redundant places. [2022-09-16 11:41:08,196 INFO L231 Difference]: Finished difference. Result has 451 places, 410 transitions, 7282 flow [2022-09-16 11:41:08,196 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7101, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7282, PETRI_PLACES=451, PETRI_TRANSITIONS=410} [2022-09-16 11:41:08,197 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 375 predicate places. [2022-09-16 11:41:08,197 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 410 transitions, 7282 flow [2022-09-16 11:41:08,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:08,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:08,197 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:08,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-09-16 11:41:08,199 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:41:08,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:08,199 INFO L85 PathProgramCache]: Analyzing trace with hash -729461189, now seen corresponding path program 35 times [2022-09-16 11:41:08,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:08,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914012670] [2022-09-16 11:41:08,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:08,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:08,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:08,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:08,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914012670] [2022-09-16 11:41:08,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914012670] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:08,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:08,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:41:08,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595780924] [2022-09-16 11:41:08,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:08,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:41:08,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:08,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:41:08,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:41:08,416 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:41:08,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 410 transitions, 7282 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:08,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:08,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:41:08,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:09,325 INFO L130 PetriNetUnfolder]: 308/2177 cut-off events. [2022-09-16 11:41:09,325 INFO L131 PetriNetUnfolder]: For 20830/20913 co-relation queries the response was YES. [2022-09-16 11:41:09,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9799 conditions, 2177 events. 308/2177 cut-off events. For 20830/20913 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 22626 event pairs, 50 based on Foata normal form. 33/2206 useless extension candidates. Maximal degree in co-relation 9582. Up to 507 conditions per place. [2022-09-16 11:41:09,363 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 307 selfloop transitions, 75 changer transitions 0/442 dead transitions. [2022-09-16 11:41:09,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 442 transitions, 8380 flow [2022-09-16 11:41:09,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:41:09,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:41:09,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 611 transitions. [2022-09-16 11:41:09,366 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7608966376089664 [2022-09-16 11:41:09,366 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 611 transitions. [2022-09-16 11:41:09,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 611 transitions. [2022-09-16 11:41:09,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:09,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 611 transitions. [2022-09-16 11:41:09,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.54545454545455) internal successors, (611), 11 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:09,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:09,368 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:09,368 INFO L175 Difference]: Start difference. First operand has 451 places, 410 transitions, 7282 flow. Second operand 11 states and 611 transitions. [2022-09-16 11:41:09,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 442 transitions, 8380 flow [2022-09-16 11:41:09,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 442 transitions, 8285 flow, removed 7 selfloop flow, removed 7 redundant places. [2022-09-16 11:41:09,580 INFO L231 Difference]: Finished difference. Result has 459 places, 417 transitions, 7593 flow [2022-09-16 11:41:09,580 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7189, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7593, PETRI_PLACES=459, PETRI_TRANSITIONS=417} [2022-09-16 11:41:09,581 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 383 predicate places. [2022-09-16 11:41:09,581 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 417 transitions, 7593 flow [2022-09-16 11:41:09,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:09,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:09,581 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:09,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-09-16 11:41:09,582 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:41:09,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:09,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1277722933, now seen corresponding path program 36 times [2022-09-16 11:41:09,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:09,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334487409] [2022-09-16 11:41:09,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:09,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:09,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:09,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334487409] [2022-09-16 11:41:09,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334487409] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:09,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:09,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-16 11:41:09,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670500307] [2022-09-16 11:41:09,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:09,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-16 11:41:09,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:09,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-16 11:41:09,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:41:09,687 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:41:09,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 417 transitions, 7593 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:09,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:09,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:41:09,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:10,500 INFO L130 PetriNetUnfolder]: 322/2317 cut-off events. [2022-09-16 11:41:10,500 INFO L131 PetriNetUnfolder]: For 23851/23937 co-relation queries the response was YES. [2022-09-16 11:41:10,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10442 conditions, 2317 events. 322/2317 cut-off events. For 23851/23937 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 24553 event pairs, 58 based on Foata normal form. 31/2341 useless extension candidates. Maximal degree in co-relation 10220. Up to 507 conditions per place. [2022-09-16 11:41:10,534 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 336 selfloop transitions, 64 changer transitions 0/460 dead transitions. [2022-09-16 11:41:10,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 460 transitions, 8888 flow [2022-09-16 11:41:10,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:41:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:41:10,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 619 transitions. [2022-09-16 11:41:10,535 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7708592777085927 [2022-09-16 11:41:10,535 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 619 transitions. [2022-09-16 11:41:10,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 619 transitions. [2022-09-16 11:41:10,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:10,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 619 transitions. [2022-09-16 11:41:10,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.27272727272727) internal successors, (619), 11 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:10,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:10,538 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:10,538 INFO L175 Difference]: Start difference. First operand has 459 places, 417 transitions, 7593 flow. Second operand 11 states and 619 transitions. [2022-09-16 11:41:10,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 460 transitions, 8888 flow [2022-09-16 11:41:10,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 460 transitions, 8670 flow, removed 78 selfloop flow, removed 7 redundant places. [2022-09-16 11:41:10,729 INFO L231 Difference]: Finished difference. Result has 466 places, 425 transitions, 7806 flow [2022-09-16 11:41:10,729 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7437, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7806, PETRI_PLACES=466, PETRI_TRANSITIONS=425} [2022-09-16 11:41:10,730 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 390 predicate places. [2022-09-16 11:41:10,730 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 425 transitions, 7806 flow [2022-09-16 11:41:10,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:10,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:10,730 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:10,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-09-16 11:41:10,731 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:41:10,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:10,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1456068015, now seen corresponding path program 37 times [2022-09-16 11:41:10,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:10,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256986209] [2022-09-16 11:41:10,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:10,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:10,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:10,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:10,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256986209] [2022-09-16 11:41:10,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256986209] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:10,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:10,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:41:10,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053348862] [2022-09-16 11:41:10,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:10,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:41:10,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:10,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:41:10,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:41:10,930 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-09-16 11:41:10,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 425 transitions, 7806 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:10,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:10,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-09-16 11:41:10,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:11,887 INFO L130 PetriNetUnfolder]: 309/2246 cut-off events. [2022-09-16 11:41:11,887 INFO L131 PetriNetUnfolder]: For 22518/22607 co-relation queries the response was YES. [2022-09-16 11:41:11,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10103 conditions, 2246 events. 309/2246 cut-off events. For 22518/22607 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 23620 event pairs, 53 based on Foata normal form. 38/2279 useless extension candidates. Maximal degree in co-relation 9880. Up to 507 conditions per place. [2022-09-16 11:41:11,913 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 318 selfloop transitions, 73 changer transitions 0/451 dead transitions. [2022-09-16 11:41:11,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 451 transitions, 8753 flow [2022-09-16 11:41:11,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:41:11,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:41:11,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 614 transitions. [2022-09-16 11:41:11,914 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7646326276463262 [2022-09-16 11:41:11,914 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 614 transitions. [2022-09-16 11:41:11,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 614 transitions. [2022-09-16 11:41:11,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:11,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 614 transitions. [2022-09-16 11:41:11,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.81818181818182) internal successors, (614), 11 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:11,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:11,916 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:11,916 INFO L175 Difference]: Start difference. First operand has 466 places, 425 transitions, 7806 flow. Second operand 11 states and 614 transitions. [2022-09-16 11:41:11,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 451 transitions, 8753 flow [2022-09-16 11:41:12,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 451 transitions, 8615 flow, removed 16 selfloop flow, removed 8 redundant places. [2022-09-16 11:41:12,099 INFO L231 Difference]: Finished difference. Result has 471 places, 427 transitions, 7881 flow [2022-09-16 11:41:12,100 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7604, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7881, PETRI_PLACES=471, PETRI_TRANSITIONS=427} [2022-09-16 11:41:12,100 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 395 predicate places. [2022-09-16 11:41:12,100 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 427 transitions, 7881 flow [2022-09-16 11:41:12,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:12,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:12,101 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:12,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-09-16 11:41:12,101 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:41:12,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:12,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1622682167, now seen corresponding path program 38 times [2022-09-16 11:41:12,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:12,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287806333] [2022-09-16 11:41:12,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:12,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:12,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:12,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:12,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287806333] [2022-09-16 11:41:12,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287806333] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:12,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:12,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-09-16 11:41:12,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825579778] [2022-09-16 11:41:12,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:12,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 11:41:12,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:12,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 11:41:12,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-09-16 11:41:12,287 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 73 [2022-09-16 11:41:12,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 427 transitions, 7881 flow. Second operand has 13 states, 13 states have (on average 47.84615384615385) internal successors, (622), 13 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:12,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:12,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 73 [2022-09-16 11:41:12,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:13,183 INFO L130 PetriNetUnfolder]: 299/2167 cut-off events. [2022-09-16 11:41:13,184 INFO L131 PetriNetUnfolder]: For 21248/21330 co-relation queries the response was YES. [2022-09-16 11:41:13,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9851 conditions, 2167 events. 299/2167 cut-off events. For 21248/21330 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 22606 event pairs, 50 based on Foata normal form. 27/2192 useless extension candidates. Maximal degree in co-relation 9624. Up to 507 conditions per place. [2022-09-16 11:41:13,217 INFO L137 encePairwiseOnDemand]: 59/73 looper letters, 326 selfloop transitions, 66 changer transitions 0/449 dead transitions. [2022-09-16 11:41:13,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 449 transitions, 8740 flow [2022-09-16 11:41:13,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-16 11:41:13,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-16 11:41:13,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 672 transitions. [2022-09-16 11:41:13,219 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.708113804004215 [2022-09-16 11:41:13,219 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 672 transitions. [2022-09-16 11:41:13,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 672 transitions. [2022-09-16 11:41:13,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:13,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 672 transitions. [2022-09-16 11:41:13,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 51.69230769230769) internal successors, (672), 13 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:13,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:13,222 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:13,222 INFO L175 Difference]: Start difference. First operand has 471 places, 427 transitions, 7881 flow. Second operand 13 states and 672 transitions. [2022-09-16 11:41:13,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 449 transitions, 8740 flow [2022-09-16 11:41:13,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 449 transitions, 8565 flow, removed 30 selfloop flow, removed 7 redundant places. [2022-09-16 11:41:13,416 INFO L231 Difference]: Finished difference. Result has 477 places, 425 transitions, 7775 flow [2022-09-16 11:41:13,417 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7638, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7775, PETRI_PLACES=477, PETRI_TRANSITIONS=425} [2022-09-16 11:41:13,417 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 401 predicate places. [2022-09-16 11:41:13,417 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 425 transitions, 7775 flow [2022-09-16 11:41:13,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 47.84615384615385) internal successors, (622), 13 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:13,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:13,418 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:13,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-09-16 11:41:13,418 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:41:13,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:13,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1085029204, now seen corresponding path program 1 times [2022-09-16 11:41:13,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:13,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266484547] [2022-09-16 11:41:13,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:13,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:13,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:13,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:13,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266484547] [2022-09-16 11:41:13,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266484547] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:13,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:13,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:41:13,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143691599] [2022-09-16 11:41:13,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:13,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:41:13,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:13,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:41:13,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:41:13,917 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:41:13,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 425 transitions, 7775 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:13,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:13,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:41:13,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:16,452 INFO L130 PetriNetUnfolder]: 726/2965 cut-off events. [2022-09-16 11:41:16,453 INFO L131 PetriNetUnfolder]: For 36964/36968 co-relation queries the response was YES. [2022-09-16 11:41:16,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15652 conditions, 2965 events. 726/2965 cut-off events. For 36964/36968 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 28580 event pairs, 117 based on Foata normal form. 3/2948 useless extension candidates. Maximal degree in co-relation 15418. Up to 814 conditions per place. [2022-09-16 11:41:16,489 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 523 selfloop transitions, 72 changer transitions 0/620 dead transitions. [2022-09-16 11:41:16,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 620 transitions, 11882 flow [2022-09-16 11:41:16,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-09-16 11:41:16,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-09-16 11:41:16,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 895 transitions. [2022-09-16 11:41:16,491 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.437866927592955 [2022-09-16 11:41:16,491 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 895 transitions. [2022-09-16 11:41:16,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 895 transitions. [2022-09-16 11:41:16,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:16,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 895 transitions. [2022-09-16 11:41:16,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 31.964285714285715) internal successors, (895), 28 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:16,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 73.0) internal successors, (2117), 29 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:16,495 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 73.0) internal successors, (2117), 29 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:16,495 INFO L175 Difference]: Start difference. First operand has 477 places, 425 transitions, 7775 flow. Second operand 28 states and 895 transitions. [2022-09-16 11:41:16,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 620 transitions, 11882 flow [2022-09-16 11:41:16,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 620 transitions, 11753 flow, removed 2 selfloop flow, removed 9 redundant places. [2022-09-16 11:41:16,710 INFO L231 Difference]: Finished difference. Result has 506 places, 453 transitions, 8168 flow [2022-09-16 11:41:16,710 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7662, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=8168, PETRI_PLACES=506, PETRI_TRANSITIONS=453} [2022-09-16 11:41:16,711 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 430 predicate places. [2022-09-16 11:41:16,711 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 453 transitions, 8168 flow [2022-09-16 11:41:16,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:16,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:16,712 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:16,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-09-16 11:41:16,712 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:41:16,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:16,712 INFO L85 PathProgramCache]: Analyzing trace with hash 632861442, now seen corresponding path program 2 times [2022-09-16 11:41:16,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:16,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903099666] [2022-09-16 11:41:16,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:16,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:17,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:17,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:17,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903099666] [2022-09-16 11:41:17,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903099666] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:17,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:17,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:41:17,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902146540] [2022-09-16 11:41:17,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:17,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:41:17,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:17,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:41:17,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:41:17,173 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:41:17,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 453 transitions, 8168 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:17,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:17,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:41:17,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:19,754 INFO L130 PetriNetUnfolder]: 725/3008 cut-off events. [2022-09-16 11:41:19,754 INFO L131 PetriNetUnfolder]: For 38873/38877 co-relation queries the response was YES. [2022-09-16 11:41:19,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16767 conditions, 3008 events. 725/3008 cut-off events. For 38873/38877 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 29475 event pairs, 185 based on Foata normal form. 3/2991 useless extension candidates. Maximal degree in co-relation 16518. Up to 1139 conditions per place. [2022-09-16 11:41:19,798 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 487 selfloop transitions, 79 changer transitions 0/591 dead transitions. [2022-09-16 11:41:19,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 591 transitions, 11233 flow [2022-09-16 11:41:19,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-09-16 11:41:19,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-09-16 11:41:19,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 862 transitions. [2022-09-16 11:41:19,800 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.43734145104008115 [2022-09-16 11:41:19,801 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 862 transitions. [2022-09-16 11:41:19,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 862 transitions. [2022-09-16 11:41:19,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:19,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 862 transitions. [2022-09-16 11:41:19,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 31.925925925925927) internal successors, (862), 27 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:19,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 73.0) internal successors, (2044), 28 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:19,804 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 73.0) internal successors, (2044), 28 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:19,804 INFO L175 Difference]: Start difference. First operand has 506 places, 453 transitions, 8168 flow. Second operand 27 states and 862 transitions. [2022-09-16 11:41:19,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 591 transitions, 11233 flow [2022-09-16 11:41:20,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 591 transitions, 11193 flow, removed 6 selfloop flow, removed 9 redundant places. [2022-09-16 11:41:20,089 INFO L231 Difference]: Finished difference. Result has 534 places, 468 transitions, 8491 flow [2022-09-16 11:41:20,089 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8130, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=8491, PETRI_PLACES=534, PETRI_TRANSITIONS=468} [2022-09-16 11:41:20,089 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 458 predicate places. [2022-09-16 11:41:20,089 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 468 transitions, 8491 flow [2022-09-16 11:41:20,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:20,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:20,090 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:20,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-09-16 11:41:20,090 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:41:20,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:20,090 INFO L85 PathProgramCache]: Analyzing trace with hash -706366766, now seen corresponding path program 3 times [2022-09-16 11:41:20,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:20,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469665216] [2022-09-16 11:41:20,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:20,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:20,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:20,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:20,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469665216] [2022-09-16 11:41:20,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469665216] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:20,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:20,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:41:20,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529117497] [2022-09-16 11:41:20,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:20,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:41:20,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:20,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:41:20,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:41:20,538 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:41:20,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 468 transitions, 8491 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:20,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:20,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:41:20,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:23,722 INFO L130 PetriNetUnfolder]: 725/3005 cut-off events. [2022-09-16 11:41:23,722 INFO L131 PetriNetUnfolder]: For 41929/41933 co-relation queries the response was YES. [2022-09-16 11:41:23,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17496 conditions, 3005 events. 725/3005 cut-off events. For 41929/41933 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 29188 event pairs, 125 based on Foata normal form. 3/2988 useless extension candidates. Maximal degree in co-relation 17234. Up to 832 conditions per place. [2022-09-16 11:41:23,773 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 525 selfloop transitions, 100 changer transitions 0/650 dead transitions. [2022-09-16 11:41:23,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 650 transitions, 12562 flow [2022-09-16 11:41:23,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-09-16 11:41:23,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-09-16 11:41:23,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1066 transitions. [2022-09-16 11:41:23,775 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.42949234488315874 [2022-09-16 11:41:23,775 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1066 transitions. [2022-09-16 11:41:23,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1066 transitions. [2022-09-16 11:41:23,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:23,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1066 transitions. [2022-09-16 11:41:23,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 31.352941176470587) internal successors, (1066), 34 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:23,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:23,780 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:23,780 INFO L175 Difference]: Start difference. First operand has 534 places, 468 transitions, 8491 flow. Second operand 34 states and 1066 transitions. [2022-09-16 11:41:23,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 650 transitions, 12562 flow [2022-09-16 11:41:24,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 650 transitions, 12478 flow, removed 7 selfloop flow, removed 11 redundant places. [2022-09-16 11:41:24,096 INFO L231 Difference]: Finished difference. Result has 563 places, 488 transitions, 9006 flow [2022-09-16 11:41:24,097 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8411, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=9006, PETRI_PLACES=563, PETRI_TRANSITIONS=488} [2022-09-16 11:41:24,097 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 487 predicate places. [2022-09-16 11:41:24,097 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 488 transitions, 9006 flow [2022-09-16 11:41:24,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:24,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:24,097 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:24,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-09-16 11:41:24,098 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:41:24,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:24,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1466061754, now seen corresponding path program 4 times [2022-09-16 11:41:24,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:24,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013853788] [2022-09-16 11:41:24,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:24,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:24,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:24,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:24,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013853788] [2022-09-16 11:41:24,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013853788] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:24,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:24,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:41:24,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213388813] [2022-09-16 11:41:24,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:24,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:41:24,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:24,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:41:24,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:41:24,506 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:41:24,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 488 transitions, 9006 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:24,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:24,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:41:24,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:27,666 INFO L130 PetriNetUnfolder]: 725/3042 cut-off events. [2022-09-16 11:41:27,666 INFO L131 PetriNetUnfolder]: For 46061/46065 co-relation queries the response was YES. [2022-09-16 11:41:27,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18403 conditions, 3042 events. 725/3042 cut-off events. For 46061/46065 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 29955 event pairs, 185 based on Foata normal form. 3/3025 useless extension candidates. Maximal degree in co-relation 18133. Up to 1123 conditions per place. [2022-09-16 11:41:27,714 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 488 selfloop transitions, 103 changer transitions 0/616 dead transitions. [2022-09-16 11:41:27,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 616 transitions, 12105 flow [2022-09-16 11:41:27,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-09-16 11:41:27,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-09-16 11:41:27,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1004 transitions. [2022-09-16 11:41:27,716 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4297945205479452 [2022-09-16 11:41:27,716 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1004 transitions. [2022-09-16 11:41:27,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1004 transitions. [2022-09-16 11:41:27,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:27,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1004 transitions. [2022-09-16 11:41:27,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 31.375) internal successors, (1004), 32 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:27,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 73.0) internal successors, (2409), 33 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:27,721 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 73.0) internal successors, (2409), 33 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:27,721 INFO L175 Difference]: Start difference. First operand has 563 places, 488 transitions, 9006 flow. Second operand 32 states and 1004 transitions. [2022-09-16 11:41:27,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 616 transitions, 12105 flow [2022-09-16 11:41:28,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 616 transitions, 11952 flow, removed 30 selfloop flow, removed 17 redundant places. [2022-09-16 11:41:28,179 INFO L231 Difference]: Finished difference. Result has 582 places, 493 transitions, 9202 flow [2022-09-16 11:41:28,180 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8858, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=9202, PETRI_PLACES=582, PETRI_TRANSITIONS=493} [2022-09-16 11:41:28,181 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 506 predicate places. [2022-09-16 11:41:28,181 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 493 transitions, 9202 flow [2022-09-16 11:41:28,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:28,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:28,181 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:28,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-09-16 11:41:28,182 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:41:28,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:28,182 INFO L85 PathProgramCache]: Analyzing trace with hash -994901186, now seen corresponding path program 5 times [2022-09-16 11:41:28,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:28,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544655048] [2022-09-16 11:41:28,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:28,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:28,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:28,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:28,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544655048] [2022-09-16 11:41:28,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544655048] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:28,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:28,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:41:28,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849404637] [2022-09-16 11:41:28,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:28,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:41:28,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:28,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:41:28,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:41:28,593 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:41:28,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 493 transitions, 9202 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:28,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:28,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:41:28,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:31,433 INFO L130 PetriNetUnfolder]: 729/3048 cut-off events. [2022-09-16 11:41:31,433 INFO L131 PetriNetUnfolder]: For 48163/48167 co-relation queries the response was YES. [2022-09-16 11:41:31,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18705 conditions, 3048 events. 729/3048 cut-off events. For 48163/48167 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 29820 event pairs, 121 based on Foata normal form. 3/3031 useless extension candidates. Maximal degree in co-relation 18462. Up to 824 conditions per place. [2022-09-16 11:41:31,482 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 548 selfloop transitions, 105 changer transitions 0/678 dead transitions. [2022-09-16 11:41:31,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 678 transitions, 13515 flow [2022-09-16 11:41:31,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-09-16 11:41:31,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-09-16 11:41:31,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 978 transitions. [2022-09-16 11:41:31,489 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4321696862571807 [2022-09-16 11:41:31,489 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 978 transitions. [2022-09-16 11:41:31,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 978 transitions. [2022-09-16 11:41:31,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:31,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 978 transitions. [2022-09-16 11:41:31,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 31.548387096774192) internal successors, (978), 31 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:31,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:31,493 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:31,493 INFO L175 Difference]: Start difference. First operand has 582 places, 493 transitions, 9202 flow. Second operand 31 states and 978 transitions. [2022-09-16 11:41:31,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 678 transitions, 13515 flow [2022-09-16 11:41:31,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 678 transitions, 13334 flow, removed 18 selfloop flow, removed 26 redundant places. [2022-09-16 11:41:31,948 INFO L231 Difference]: Finished difference. Result has 596 places, 511 transitions, 9658 flow [2022-09-16 11:41:31,949 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9034, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=9658, PETRI_PLACES=596, PETRI_TRANSITIONS=511} [2022-09-16 11:41:31,949 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 520 predicate places. [2022-09-16 11:41:31,949 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 511 transitions, 9658 flow [2022-09-16 11:41:31,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:31,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:31,950 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:31,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-09-16 11:41:31,950 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:41:31,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:31,950 INFO L85 PathProgramCache]: Analyzing trace with hash 246125894, now seen corresponding path program 6 times [2022-09-16 11:41:31,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:31,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601959389] [2022-09-16 11:41:31,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:31,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:32,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:32,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:32,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601959389] [2022-09-16 11:41:32,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601959389] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:32,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:32,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:41:32,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918275439] [2022-09-16 11:41:32,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:32,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:41:32,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:32,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:41:32,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:41:32,427 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:41:32,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 511 transitions, 9658 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:32,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:32,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:41:32,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:35,354 INFO L130 PetriNetUnfolder]: 728/3060 cut-off events. [2022-09-16 11:41:35,354 INFO L131 PetriNetUnfolder]: For 51186/51190 co-relation queries the response was YES. [2022-09-16 11:41:35,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19401 conditions, 3060 events. 728/3060 cut-off events. For 51186/51190 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 29990 event pairs, 121 based on Foata normal form. 3/3043 useless extension candidates. Maximal degree in co-relation 19145. Up to 854 conditions per place. [2022-09-16 11:41:35,418 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 557 selfloop transitions, 102 changer transitions 0/684 dead transitions. [2022-09-16 11:41:35,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 684 transitions, 13714 flow [2022-09-16 11:41:35,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-09-16 11:41:35,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-09-16 11:41:35,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1008 transitions. [2022-09-16 11:41:35,419 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2022-09-16 11:41:35,419 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1008 transitions. [2022-09-16 11:41:35,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1008 transitions. [2022-09-16 11:41:35,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:35,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1008 transitions. [2022-09-16 11:41:35,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 31.5) internal successors, (1008), 32 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:35,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 73.0) internal successors, (2409), 33 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:35,422 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 73.0) internal successors, (2409), 33 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:35,422 INFO L175 Difference]: Start difference. First operand has 596 places, 511 transitions, 9658 flow. Second operand 32 states and 1008 transitions. [2022-09-16 11:41:35,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 684 transitions, 13714 flow [2022-09-16 11:41:35,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 684 transitions, 13580 flow, removed 23 selfloop flow, removed 13 redundant places. [2022-09-16 11:41:35,773 INFO L231 Difference]: Finished difference. Result has 620 places, 521 transitions, 9973 flow [2022-09-16 11:41:35,773 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9528, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=9973, PETRI_PLACES=620, PETRI_TRANSITIONS=521} [2022-09-16 11:41:35,774 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 544 predicate places. [2022-09-16 11:41:35,774 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 521 transitions, 9973 flow [2022-09-16 11:41:35,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:35,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:35,774 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:35,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-09-16 11:41:35,775 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:41:35,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:35,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1609922464, now seen corresponding path program 7 times [2022-09-16 11:41:35,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:35,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488931883] [2022-09-16 11:41:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:35,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:36,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:36,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488931883] [2022-09-16 11:41:36,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488931883] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:36,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:36,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:41:36,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241052217] [2022-09-16 11:41:36,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:36,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:41:36,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:36,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:41:36,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:41:36,225 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:41:36,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 521 transitions, 9973 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:36,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:36,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:41:36,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:40,038 INFO L130 PetriNetUnfolder]: 730/3094 cut-off events. [2022-09-16 11:41:40,038 INFO L131 PetriNetUnfolder]: For 54325/54329 co-relation queries the response was YES. [2022-09-16 11:41:40,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19900 conditions, 3094 events. 730/3094 cut-off events. For 54325/54329 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 30628 event pairs, 177 based on Foata normal form. 3/3077 useless extension candidates. Maximal degree in co-relation 19634. Up to 1079 conditions per place. [2022-09-16 11:41:40,086 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 489 selfloop transitions, 147 changer transitions 0/661 dead transitions. [2022-09-16 11:41:40,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 661 transitions, 13410 flow [2022-09-16 11:41:40,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-09-16 11:41:40,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-09-16 11:41:40,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1170 transitions. [2022-09-16 11:41:40,088 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.42177361211247294 [2022-09-16 11:41:40,088 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1170 transitions. [2022-09-16 11:41:40,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1170 transitions. [2022-09-16 11:41:40,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:40,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1170 transitions. [2022-09-16 11:41:40,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 30.789473684210527) internal successors, (1170), 38 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:40,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 73.0) internal successors, (2847), 39 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:40,093 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 73.0) internal successors, (2847), 39 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:40,093 INFO L175 Difference]: Start difference. First operand has 620 places, 521 transitions, 9973 flow. Second operand 38 states and 1170 transitions. [2022-09-16 11:41:40,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 661 transitions, 13410 flow [2022-09-16 11:41:40,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 633 places, 661 transitions, 13150 flow, removed 27 selfloop flow, removed 24 redundant places. [2022-09-16 11:41:40,443 INFO L231 Difference]: Finished difference. Result has 640 places, 532 transitions, 10313 flow [2022-09-16 11:41:40,444 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9723, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10313, PETRI_PLACES=640, PETRI_TRANSITIONS=532} [2022-09-16 11:41:40,444 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 564 predicate places. [2022-09-16 11:41:40,445 INFO L495 AbstractCegarLoop]: Abstraction has has 640 places, 532 transitions, 10313 flow [2022-09-16 11:41:40,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:40,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:40,445 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:40,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-09-16 11:41:40,445 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:41:40,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:40,446 INFO L85 PathProgramCache]: Analyzing trace with hash -2046666050, now seen corresponding path program 8 times [2022-09-16 11:41:40,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:40,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858834752] [2022-09-16 11:41:40,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:40,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:40,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:40,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858834752] [2022-09-16 11:41:40,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858834752] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:40,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:40,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:41:40,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127406045] [2022-09-16 11:41:40,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:40,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:41:40,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:40,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:41:40,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:41:40,846 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:41:40,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 532 transitions, 10313 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:40,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:40,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:41:40,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:46,100 INFO L130 PetriNetUnfolder]: 730/3088 cut-off events. [2022-09-16 11:41:46,100 INFO L131 PetriNetUnfolder]: For 55158/55162 co-relation queries the response was YES. [2022-09-16 11:41:46,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20077 conditions, 3088 events. 730/3088 cut-off events. For 55158/55162 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 30585 event pairs, 72 based on Foata normal form. 8/3076 useless extension candidates. Maximal degree in co-relation 19805. Up to 877 conditions per place. [2022-09-16 11:41:46,146 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 501 selfloop transitions, 245 changer transitions 0/771 dead transitions. [2022-09-16 11:41:46,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 771 transitions, 15673 flow [2022-09-16 11:41:46,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-09-16 11:41:46,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-09-16 11:41:46,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 1672 transitions. [2022-09-16 11:41:46,148 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.41643835616438357 [2022-09-16 11:41:46,148 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 1672 transitions. [2022-09-16 11:41:46,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 1672 transitions. [2022-09-16 11:41:46,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:46,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 1672 transitions. [2022-09-16 11:41:46,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 30.4) internal successors, (1672), 55 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:46,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 73.0) internal successors, (4088), 56 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:46,153 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 73.0) internal successors, (4088), 56 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:46,153 INFO L175 Difference]: Start difference. First operand has 640 places, 532 transitions, 10313 flow. Second operand 55 states and 1672 transitions. [2022-09-16 11:41:46,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 771 transitions, 15673 flow [2022-09-16 11:41:46,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 771 transitions, 15203 flow, removed 53 selfloop flow, removed 38 redundant places. [2022-09-16 11:41:46,526 INFO L231 Difference]: Finished difference. Result has 660 places, 571 transitions, 11143 flow [2022-09-16 11:41:46,526 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9940, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=11143, PETRI_PLACES=660, PETRI_TRANSITIONS=571} [2022-09-16 11:41:46,527 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 584 predicate places. [2022-09-16 11:41:46,527 INFO L495 AbstractCegarLoop]: Abstraction has has 660 places, 571 transitions, 11143 flow [2022-09-16 11:41:46,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:46,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:46,527 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:46,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-09-16 11:41:46,527 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:41:46,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:46,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1809555833, now seen corresponding path program 1 times [2022-09-16 11:41:46,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:46,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937594928] [2022-09-16 11:41:46,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:46,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:46,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:46,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:46,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937594928] [2022-09-16 11:41:46,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937594928] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:46,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:46,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:41:46,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660293331] [2022-09-16 11:41:46,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:46,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:41:46,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:46,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:41:46,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:41:46,990 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:41:46,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 571 transitions, 11143 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:46,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:46,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:41:46,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:50,572 INFO L130 PetriNetUnfolder]: 728/3089 cut-off events. [2022-09-16 11:41:50,572 INFO L131 PetriNetUnfolder]: For 56268/56272 co-relation queries the response was YES. [2022-09-16 11:41:50,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20351 conditions, 3089 events. 728/3089 cut-off events. For 56268/56272 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 30592 event pairs, 187 based on Foata normal form. 5/3074 useless extension candidates. Maximal degree in co-relation 20082. Up to 1085 conditions per place. [2022-09-16 11:41:50,625 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 526 selfloop transitions, 149 changer transitions 0/700 dead transitions. [2022-09-16 11:41:50,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 700 transitions, 14394 flow [2022-09-16 11:41:50,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-09-16 11:41:50,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-09-16 11:41:50,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1094 transitions. [2022-09-16 11:41:50,627 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.42818003913894326 [2022-09-16 11:41:50,627 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1094 transitions. [2022-09-16 11:41:50,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1094 transitions. [2022-09-16 11:41:50,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:50,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1094 transitions. [2022-09-16 11:41:50,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 31.257142857142856) internal successors, (1094), 35 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:50,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 73.0) internal successors, (2628), 36 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:50,631 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 73.0) internal successors, (2628), 36 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:50,631 INFO L175 Difference]: Start difference. First operand has 660 places, 571 transitions, 11143 flow. Second operand 35 states and 1094 transitions. [2022-09-16 11:41:50,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 700 transitions, 14394 flow [2022-09-16 11:41:51,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 700 transitions, 12860 flow, removed 68 selfloop flow, removed 49 redundant places. [2022-09-16 11:41:51,029 INFO L231 Difference]: Finished difference. Result has 653 places, 583 transitions, 10189 flow [2022-09-16 11:41:51,030 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9692, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=10189, PETRI_PLACES=653, PETRI_TRANSITIONS=583} [2022-09-16 11:41:51,030 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 577 predicate places. [2022-09-16 11:41:51,030 INFO L495 AbstractCegarLoop]: Abstraction has has 653 places, 583 transitions, 10189 flow [2022-09-16 11:41:51,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:51,031 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:51,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-09-16 11:41:51,031 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:41:51,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:51,031 INFO L85 PathProgramCache]: Analyzing trace with hash 453672061, now seen corresponding path program 2 times [2022-09-16 11:41:51,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:51,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706670266] [2022-09-16 11:41:51,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:51,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:51,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:51,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:51,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706670266] [2022-09-16 11:41:51,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706670266] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:51,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:51,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:41:51,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647881522] [2022-09-16 11:41:51,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:51,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:41:51,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:51,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:41:51,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:41:51,465 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:41:51,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 653 places, 583 transitions, 10189 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:51,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:41:51,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:55,420 INFO L130 PetriNetUnfolder]: 737/3138 cut-off events. [2022-09-16 11:41:55,421 INFO L131 PetriNetUnfolder]: For 49565/49567 co-relation queries the response was YES. [2022-09-16 11:41:55,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20088 conditions, 3138 events. 737/3138 cut-off events. For 49565/49567 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 31196 event pairs, 189 based on Foata normal form. 5/3122 useless extension candidates. Maximal degree in co-relation 19841. Up to 1102 conditions per place. [2022-09-16 11:41:55,472 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 545 selfloop transitions, 176 changer transitions 0/746 dead transitions. [2022-09-16 11:41:55,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 692 places, 746 transitions, 13914 flow [2022-09-16 11:41:55,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-09-16 11:41:55,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-09-16 11:41:55,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1249 transitions. [2022-09-16 11:41:55,474 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.42773972602739724 [2022-09-16 11:41:55,474 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 1249 transitions. [2022-09-16 11:41:55,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 1249 transitions. [2022-09-16 11:41:55,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:55,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 1249 transitions. [2022-09-16 11:41:55,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 31.225) internal successors, (1249), 40 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:55,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 73.0) internal successors, (2993), 41 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:55,478 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 73.0) internal successors, (2993), 41 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:55,478 INFO L175 Difference]: Start difference. First operand has 653 places, 583 transitions, 10189 flow. Second operand 40 states and 1249 transitions. [2022-09-16 11:41:55,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 692 places, 746 transitions, 13914 flow [2022-09-16 11:41:55,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 746 transitions, 13594 flow, removed 7 selfloop flow, removed 26 redundant places. [2022-09-16 11:41:55,937 INFO L231 Difference]: Finished difference. Result has 678 places, 614 transitions, 10809 flow [2022-09-16 11:41:55,938 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9907, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=10809, PETRI_PLACES=678, PETRI_TRANSITIONS=614} [2022-09-16 11:41:55,938 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 602 predicate places. [2022-09-16 11:41:55,938 INFO L495 AbstractCegarLoop]: Abstraction has has 678 places, 614 transitions, 10809 flow [2022-09-16 11:41:55,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:55,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:55,939 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:55,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-09-16 11:41:55,939 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:41:55,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:55,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1774231985, now seen corresponding path program 3 times [2022-09-16 11:41:55,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:55,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704089492] [2022-09-16 11:41:55,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:55,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:56,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:56,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704089492] [2022-09-16 11:41:56,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704089492] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:56,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:56,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:41:56,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753286951] [2022-09-16 11:41:56,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:56,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:41:56,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:56,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:41:56,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:41:56,391 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:41:56,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 678 places, 614 transitions, 10809 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:56,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:56,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:41:56,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:00,419 INFO L130 PetriNetUnfolder]: 735/3142 cut-off events. [2022-09-16 11:42:00,420 INFO L131 PetriNetUnfolder]: For 54212/54214 co-relation queries the response was YES. [2022-09-16 11:42:00,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20874 conditions, 3142 events. 735/3142 cut-off events. For 54212/54214 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 31241 event pairs, 188 based on Foata normal form. 5/3126 useless extension candidates. Maximal degree in co-relation 20615. Up to 1099 conditions per place. [2022-09-16 11:42:00,559 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 560 selfloop transitions, 172 changer transitions 0/757 dead transitions. [2022-09-16 11:42:00,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 716 places, 757 transitions, 14246 flow [2022-09-16 11:42:00,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-09-16 11:42:00,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-09-16 11:42:00,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1227 transitions. [2022-09-16 11:42:00,561 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4309799789251844 [2022-09-16 11:42:00,561 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1227 transitions. [2022-09-16 11:42:00,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1227 transitions. [2022-09-16 11:42:00,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:00,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1227 transitions. [2022-09-16 11:42:00,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 31.46153846153846) internal successors, (1227), 39 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:00,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:00,564 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:00,564 INFO L175 Difference]: Start difference. First operand has 678 places, 614 transitions, 10809 flow. Second operand 39 states and 1227 transitions. [2022-09-16 11:42:00,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 716 places, 757 transitions, 14246 flow [2022-09-16 11:42:00,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 705 places, 757 transitions, 14089 flow, removed 19 selfloop flow, removed 11 redundant places. [2022-09-16 11:42:00,964 INFO L231 Difference]: Finished difference. Result has 717 places, 630 transitions, 11347 flow [2022-09-16 11:42:00,965 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10653, PETRI_DIFFERENCE_MINUEND_PLACES=667, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=11347, PETRI_PLACES=717, PETRI_TRANSITIONS=630} [2022-09-16 11:42:00,965 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 641 predicate places. [2022-09-16 11:42:00,965 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 630 transitions, 11347 flow [2022-09-16 11:42:00,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:00,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:00,965 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:42:00,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-09-16 11:42:00,966 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:42:00,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:00,966 INFO L85 PathProgramCache]: Analyzing trace with hash -733061095, now seen corresponding path program 4 times [2022-09-16 11:42:00,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:00,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871289488] [2022-09-16 11:42:00,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:00,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:01,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:01,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871289488] [2022-09-16 11:42:01,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871289488] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:01,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:01,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:42:01,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880235811] [2022-09-16 11:42:01,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:01,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:42:01,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:01,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:42:01,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:42:01,429 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:42:01,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 630 transitions, 11347 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:01,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:01,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:42:01,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:06,994 INFO L130 PetriNetUnfolder]: 744/3164 cut-off events. [2022-09-16 11:42:06,995 INFO L131 PetriNetUnfolder]: For 61829/61831 co-relation queries the response was YES. [2022-09-16 11:42:07,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22065 conditions, 3164 events. 744/3164 cut-off events. For 61829/61831 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 31329 event pairs, 125 based on Foata normal form. 5/3147 useless extension candidates. Maximal degree in co-relation 21795. Up to 823 conditions per place. [2022-09-16 11:42:07,045 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 574 selfloop transitions, 234 changer transitions 0/833 dead transitions. [2022-09-16 11:42:07,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 780 places, 833 transitions, 15938 flow [2022-09-16 11:42:07,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-09-16 11:42:07,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-09-16 11:42:07,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 1917 transitions. [2022-09-16 11:42:07,047 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4103167808219178 [2022-09-16 11:42:07,047 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 1917 transitions. [2022-09-16 11:42:07,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 1917 transitions. [2022-09-16 11:42:07,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:07,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 1917 transitions. [2022-09-16 11:42:07,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 29.953125) internal successors, (1917), 64 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:07,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 73.0) internal successors, (4745), 65 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:07,054 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 73.0) internal successors, (4745), 65 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:07,054 INFO L175 Difference]: Start difference. First operand has 717 places, 630 transitions, 11347 flow. Second operand 64 states and 1917 transitions. [2022-09-16 11:42:07,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 780 places, 833 transitions, 15938 flow [2022-09-16 11:42:07,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 757 places, 833 transitions, 15634 flow, removed 31 selfloop flow, removed 23 redundant places. [2022-09-16 11:42:07,463 INFO L231 Difference]: Finished difference. Result has 772 places, 667 transitions, 12190 flow [2022-09-16 11:42:07,464 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11053, PETRI_DIFFERENCE_MINUEND_PLACES=694, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=12190, PETRI_PLACES=772, PETRI_TRANSITIONS=667} [2022-09-16 11:42:07,464 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 696 predicate places. [2022-09-16 11:42:07,464 INFO L495 AbstractCegarLoop]: Abstraction has has 772 places, 667 transitions, 12190 flow [2022-09-16 11:42:07,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:07,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:07,464 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:42:07,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-09-16 11:42:07,465 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:42:07,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:07,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1273542449, now seen corresponding path program 5 times [2022-09-16 11:42:07,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:07,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426037584] [2022-09-16 11:42:07,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:07,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:07,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:07,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:07,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426037584] [2022-09-16 11:42:07,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426037584] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:07,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:07,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:42:07,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019140034] [2022-09-16 11:42:07,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:07,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:42:07,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:07,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:42:07,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:42:07,859 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:42:07,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 772 places, 667 transitions, 12190 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:07,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:07,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:42:07,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:13,351 INFO L130 PetriNetUnfolder]: 742/3178 cut-off events. [2022-09-16 11:42:13,351 INFO L131 PetriNetUnfolder]: For 71610/71612 co-relation queries the response was YES. [2022-09-16 11:42:13,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23325 conditions, 3178 events. 742/3178 cut-off events. For 71610/71612 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 31631 event pairs, 181 based on Foata normal form. 5/3161 useless extension candidates. Maximal degree in co-relation 23040. Up to 1035 conditions per place. [2022-09-16 11:42:13,408 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 545 selfloop transitions, 237 changer transitions 0/807 dead transitions. [2022-09-16 11:42:13,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 827 places, 807 transitions, 15857 flow [2022-09-16 11:42:13,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-09-16 11:42:13,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-09-16 11:42:13,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 1691 transitions. [2022-09-16 11:42:13,410 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.41364970645792565 [2022-09-16 11:42:13,410 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 1691 transitions. [2022-09-16 11:42:13,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 1691 transitions. [2022-09-16 11:42:13,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:13,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 1691 transitions. [2022-09-16 11:42:13,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 30.196428571428573) internal successors, (1691), 56 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:13,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 73.0) internal successors, (4161), 57 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:13,415 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 73.0) internal successors, (4161), 57 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:13,415 INFO L175 Difference]: Start difference. First operand has 772 places, 667 transitions, 12190 flow. Second operand 56 states and 1691 transitions. [2022-09-16 11:42:13,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 827 places, 807 transitions, 15857 flow [2022-09-16 11:42:13,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 792 places, 807 transitions, 15457 flow, removed 62 selfloop flow, removed 35 redundant places. [2022-09-16 11:42:13,909 INFO L231 Difference]: Finished difference. Result has 800 places, 682 transitions, 12736 flow [2022-09-16 11:42:13,910 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11792, PETRI_DIFFERENCE_MINUEND_PLACES=737, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=12736, PETRI_PLACES=800, PETRI_TRANSITIONS=682} [2022-09-16 11:42:13,910 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 724 predicate places. [2022-09-16 11:42:13,910 INFO L495 AbstractCegarLoop]: Abstraction has has 800 places, 682 transitions, 12736 flow [2022-09-16 11:42:13,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:13,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:13,911 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:42:13,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-09-16 11:42:13,911 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:42:13,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:13,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1872077933, now seen corresponding path program 6 times [2022-09-16 11:42:13,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:13,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133038666] [2022-09-16 11:42:13,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:13,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:14,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:14,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:14,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133038666] [2022-09-16 11:42:14,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133038666] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:14,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:14,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:42:14,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443848406] [2022-09-16 11:42:14,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:14,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:42:14,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:14,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:42:14,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:42:14,388 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:42:14,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 800 places, 682 transitions, 12736 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:14,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:14,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:42:14,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:17,811 INFO L130 PetriNetUnfolder]: 751/3202 cut-off events. [2022-09-16 11:42:17,812 INFO L131 PetriNetUnfolder]: For 79011/79013 co-relation queries the response was YES. [2022-09-16 11:42:17,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24253 conditions, 3202 events. 751/3202 cut-off events. For 79011/79013 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 31853 event pairs, 106 based on Foata normal form. 5/3184 useless extension candidates. Maximal degree in co-relation 23964. Up to 927 conditions per place. [2022-09-16 11:42:17,877 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 654 selfloop transitions, 197 changer transitions 0/876 dead transitions. [2022-09-16 11:42:17,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 835 places, 876 transitions, 17652 flow [2022-09-16 11:42:17,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-09-16 11:42:17,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-09-16 11:42:17,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1119 transitions. [2022-09-16 11:42:17,879 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4257990867579909 [2022-09-16 11:42:17,879 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1119 transitions. [2022-09-16 11:42:17,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1119 transitions. [2022-09-16 11:42:17,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:17,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1119 transitions. [2022-09-16 11:42:17,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 31.083333333333332) internal successors, (1119), 36 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:17,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 73.0) internal successors, (2701), 37 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:17,882 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 73.0) internal successors, (2701), 37 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:17,882 INFO L175 Difference]: Start difference. First operand has 800 places, 682 transitions, 12736 flow. Second operand 36 states and 1119 transitions. [2022-09-16 11:42:17,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 835 places, 876 transitions, 17652 flow [2022-09-16 11:42:18,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 789 places, 876 transitions, 17190 flow, removed 57 selfloop flow, removed 46 redundant places. [2022-09-16 11:42:18,461 INFO L231 Difference]: Finished difference. Result has 808 places, 719 transitions, 13678 flow [2022-09-16 11:42:18,462 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12328, PETRI_DIFFERENCE_MINUEND_PLACES=754, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=13678, PETRI_PLACES=808, PETRI_TRANSITIONS=719} [2022-09-16 11:42:18,463 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 732 predicate places. [2022-09-16 11:42:18,463 INFO L495 AbstractCegarLoop]: Abstraction has has 808 places, 719 transitions, 13678 flow [2022-09-16 11:42:18,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:18,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:18,463 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:42:18,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-09-16 11:42:18,464 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:42:18,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:18,464 INFO L85 PathProgramCache]: Analyzing trace with hash 71690769, now seen corresponding path program 7 times [2022-09-16 11:42:18,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:18,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997832662] [2022-09-16 11:42:18,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:18,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:18,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:18,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:18,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997832662] [2022-09-16 11:42:18,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997832662] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:18,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:18,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:42:18,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399813404] [2022-09-16 11:42:18,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:18,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:42:18,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:18,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:42:18,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:42:18,901 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:42:18,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 719 transitions, 13678 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:18,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:18,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:42:18,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:22,573 INFO L130 PetriNetUnfolder]: 765/3299 cut-off events. [2022-09-16 11:42:22,573 INFO L131 PetriNetUnfolder]: For 90357/90359 co-relation queries the response was YES. [2022-09-16 11:42:22,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25894 conditions, 3299 events. 765/3299 cut-off events. For 90357/90359 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 33087 event pairs, 104 based on Foata normal form. 5/3280 useless extension candidates. Maximal degree in co-relation 25594. Up to 926 conditions per place. [2022-09-16 11:42:22,641 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 661 selfloop transitions, 226 changer transitions 0/912 dead transitions. [2022-09-16 11:42:22,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 846 places, 912 transitions, 18675 flow [2022-09-16 11:42:22,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-09-16 11:42:22,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-09-16 11:42:22,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1208 transitions. [2022-09-16 11:42:22,643 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.42430628731998593 [2022-09-16 11:42:22,643 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1208 transitions. [2022-09-16 11:42:22,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1208 transitions. [2022-09-16 11:42:22,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:22,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1208 transitions. [2022-09-16 11:42:22,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 30.974358974358974) internal successors, (1208), 39 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:22,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:22,648 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:22,648 INFO L175 Difference]: Start difference. First operand has 808 places, 719 transitions, 13678 flow. Second operand 39 states and 1208 transitions. [2022-09-16 11:42:22,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 846 places, 912 transitions, 18675 flow [2022-09-16 11:42:23,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 836 places, 912 transitions, 18407 flow, removed 81 selfloop flow, removed 10 redundant places. [2022-09-16 11:42:23,329 INFO L231 Difference]: Finished difference. Result has 852 places, 751 transitions, 14891 flow [2022-09-16 11:42:23,329 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13450, PETRI_DIFFERENCE_MINUEND_PLACES=798, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=14891, PETRI_PLACES=852, PETRI_TRANSITIONS=751} [2022-09-16 11:42:23,330 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 776 predicate places. [2022-09-16 11:42:23,330 INFO L495 AbstractCegarLoop]: Abstraction has has 852 places, 751 transitions, 14891 flow [2022-09-16 11:42:23,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:23,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:23,330 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:42:23,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-09-16 11:42:23,330 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:42:23,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:23,331 INFO L85 PathProgramCache]: Analyzing trace with hash -900938735, now seen corresponding path program 8 times [2022-09-16 11:42:23,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:23,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55169936] [2022-09-16 11:42:23,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:23,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:23,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:23,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:23,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55169936] [2022-09-16 11:42:23,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55169936] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:23,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:23,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:42:23,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937240939] [2022-09-16 11:42:23,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:23,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:42:23,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:23,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:42:23,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:42:23,729 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:42:23,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 852 places, 751 transitions, 14891 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:23,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:23,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:42:23,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:27,681 INFO L130 PetriNetUnfolder]: 775/3344 cut-off events. [2022-09-16 11:42:27,681 INFO L131 PetriNetUnfolder]: For 102635/102637 co-relation queries the response was YES. [2022-09-16 11:42:27,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27575 conditions, 3344 events. 775/3344 cut-off events. For 102635/102637 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 33685 event pairs, 104 based on Foata normal form. 5/3324 useless extension candidates. Maximal degree in co-relation 27257. Up to 923 conditions per place. [2022-09-16 11:42:27,865 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 661 selfloop transitions, 249 changer transitions 0/935 dead transitions. [2022-09-16 11:42:27,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 893 places, 935 transitions, 19810 flow [2022-09-16 11:42:27,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-09-16 11:42:27,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-09-16 11:42:27,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 1287 transitions. [2022-09-16 11:42:27,867 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4197651663405088 [2022-09-16 11:42:27,867 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 1287 transitions. [2022-09-16 11:42:27,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 1287 transitions. [2022-09-16 11:42:27,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:27,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 1287 transitions. [2022-09-16 11:42:27,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 30.642857142857142) internal successors, (1287), 42 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:27,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 73.0) internal successors, (3139), 43 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:27,872 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 73.0) internal successors, (3139), 43 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:27,872 INFO L175 Difference]: Start difference. First operand has 852 places, 751 transitions, 14891 flow. Second operand 42 states and 1287 transitions. [2022-09-16 11:42:27,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 893 places, 935 transitions, 19810 flow [2022-09-16 11:42:28,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 876 places, 935 transitions, 19524 flow, removed 72 selfloop flow, removed 17 redundant places. [2022-09-16 11:42:28,714 INFO L231 Difference]: Finished difference. Result has 890 places, 777 transitions, 16020 flow [2022-09-16 11:42:28,715 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=14627, PETRI_DIFFERENCE_MINUEND_PLACES=835, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=16020, PETRI_PLACES=890, PETRI_TRANSITIONS=777} [2022-09-16 11:42:28,715 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 814 predicate places. [2022-09-16 11:42:28,715 INFO L495 AbstractCegarLoop]: Abstraction has has 890 places, 777 transitions, 16020 flow [2022-09-16 11:42:28,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:28,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:28,715 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:42:28,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-09-16 11:42:28,716 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:42:28,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:28,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1931636571, now seen corresponding path program 9 times [2022-09-16 11:42:28,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:28,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929989627] [2022-09-16 11:42:28,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:28,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:29,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:29,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:29,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929989627] [2022-09-16 11:42:29,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929989627] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:29,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:29,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:42:29,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115660707] [2022-09-16 11:42:29,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:29,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:42:29,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:29,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:42:29,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:42:29,111 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:42:29,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 890 places, 777 transitions, 16020 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:29,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:29,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:42:29,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:33,524 INFO L130 PetriNetUnfolder]: 787/3398 cut-off events. [2022-09-16 11:42:33,524 INFO L131 PetriNetUnfolder]: For 118742/118744 co-relation queries the response was YES. [2022-09-16 11:42:33,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29284 conditions, 3398 events. 787/3398 cut-off events. For 118742/118744 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 34416 event pairs, 104 based on Foata normal form. 5/3377 useless extension candidates. Maximal degree in co-relation 28953. Up to 916 conditions per place. [2022-09-16 11:42:33,596 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 663 selfloop transitions, 272 changer transitions 0/960 dead transitions. [2022-09-16 11:42:33,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 932 places, 960 transitions, 21118 flow [2022-09-16 11:42:33,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-09-16 11:42:33,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-09-16 11:42:33,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1317 transitions. [2022-09-16 11:42:33,598 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4195603695444409 [2022-09-16 11:42:33,598 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 1317 transitions. [2022-09-16 11:42:33,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 1317 transitions. [2022-09-16 11:42:33,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:33,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 1317 transitions. [2022-09-16 11:42:33,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 30.627906976744185) internal successors, (1317), 43 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:33,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:33,601 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:33,601 INFO L175 Difference]: Start difference. First operand has 890 places, 777 transitions, 16020 flow. Second operand 43 states and 1317 transitions. [2022-09-16 11:42:33,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 932 places, 960 transitions, 21118 flow [2022-09-16 11:42:34,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 911 places, 960 transitions, 20668 flow, removed 91 selfloop flow, removed 21 redundant places. [2022-09-16 11:42:34,835 INFO L231 Difference]: Finished difference. Result has 926 places, 802 transitions, 17197 flow [2022-09-16 11:42:34,835 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=15610, PETRI_DIFFERENCE_MINUEND_PLACES=869, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=777, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=17197, PETRI_PLACES=926, PETRI_TRANSITIONS=802} [2022-09-16 11:42:34,836 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 850 predicate places. [2022-09-16 11:42:34,836 INFO L495 AbstractCegarLoop]: Abstraction has has 926 places, 802 transitions, 17197 flow [2022-09-16 11:42:34,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:34,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:34,836 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:42:34,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-09-16 11:42:34,836 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:42:34,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:34,837 INFO L85 PathProgramCache]: Analyzing trace with hash -839170485, now seen corresponding path program 10 times [2022-09-16 11:42:34,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:34,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023774636] [2022-09-16 11:42:34,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:34,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:35,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:35,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:35,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023774636] [2022-09-16 11:42:35,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023774636] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:35,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:35,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:42:35,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442657205] [2022-09-16 11:42:35,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:35,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:42:35,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:35,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:42:35,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:42:35,214 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:42:35,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 926 places, 802 transitions, 17197 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:35,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:35,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:42:35,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:38,863 INFO L130 PetriNetUnfolder]: 801/3477 cut-off events. [2022-09-16 11:42:38,864 INFO L131 PetriNetUnfolder]: For 133412/133414 co-relation queries the response was YES. [2022-09-16 11:42:38,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30855 conditions, 3477 events. 801/3477 cut-off events. For 133412/133414 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 35347 event pairs, 108 based on Foata normal form. 5/3455 useless extension candidates. Maximal degree in co-relation 30512. Up to 912 conditions per place. [2022-09-16 11:42:38,940 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 679 selfloop transitions, 293 changer transitions 0/997 dead transitions. [2022-09-16 11:42:38,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 964 places, 997 transitions, 22652 flow [2022-09-16 11:42:38,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-09-16 11:42:38,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-09-16 11:42:38,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1199 transitions. [2022-09-16 11:42:38,942 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.42114506498068144 [2022-09-16 11:42:38,942 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1199 transitions. [2022-09-16 11:42:38,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1199 transitions. [2022-09-16 11:42:38,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:38,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1199 transitions. [2022-09-16 11:42:38,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 30.743589743589745) internal successors, (1199), 39 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:38,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:38,945 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:38,945 INFO L175 Difference]: Start difference. First operand has 926 places, 802 transitions, 17197 flow. Second operand 39 states and 1199 transitions. [2022-09-16 11:42:38,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 964 places, 997 transitions, 22652 flow [2022-09-16 11:42:40,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 937 places, 997 transitions, 22199 flow, removed 86 selfloop flow, removed 27 redundant places. [2022-09-16 11:42:40,161 INFO L231 Difference]: Finished difference. Result has 952 places, 836 transitions, 18569 flow [2022-09-16 11:42:40,162 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=16788, PETRI_DIFFERENCE_MINUEND_PLACES=899, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=802, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=18569, PETRI_PLACES=952, PETRI_TRANSITIONS=836} [2022-09-16 11:42:40,162 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 876 predicate places. [2022-09-16 11:42:40,162 INFO L495 AbstractCegarLoop]: Abstraction has has 952 places, 836 transitions, 18569 flow [2022-09-16 11:42:40,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:40,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:40,162 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:42:40,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-09-16 11:42:40,163 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:42:40,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:40,163 INFO L85 PathProgramCache]: Analyzing trace with hash -672298257, now seen corresponding path program 11 times [2022-09-16 11:42:40,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:40,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704162500] [2022-09-16 11:42:40,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:40,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:40,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:40,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:40,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704162500] [2022-09-16 11:42:40,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704162500] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:40,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:40,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:42:40,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538313994] [2022-09-16 11:42:40,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:40,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:42:40,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:40,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:42:40,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:42:40,618 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:42:40,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 952 places, 836 transitions, 18569 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:40,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:40,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:42:40,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:45,489 INFO L130 PetriNetUnfolder]: 815/3546 cut-off events. [2022-09-16 11:42:45,489 INFO L131 PetriNetUnfolder]: For 160272/160274 co-relation queries the response was YES. [2022-09-16 11:42:45,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32637 conditions, 3546 events. 815/3546 cut-off events. For 160272/160274 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 36491 event pairs, 169 based on Foata normal form. 5/3523 useless extension candidates. Maximal degree in co-relation 32282. Up to 1139 conditions per place. [2022-09-16 11:42:45,578 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 653 selfloop transitions, 317 changer transitions 0/995 dead transitions. [2022-09-16 11:42:45,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 994 places, 995 transitions, 23422 flow [2022-09-16 11:42:45,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-09-16 11:42:45,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-09-16 11:42:45,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1310 transitions. [2022-09-16 11:42:45,580 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4173303599872571 [2022-09-16 11:42:45,580 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 1310 transitions. [2022-09-16 11:42:45,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 1310 transitions. [2022-09-16 11:42:45,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:45,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 1310 transitions. [2022-09-16 11:42:45,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 30.46511627906977) internal successors, (1310), 43 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:45,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:45,585 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:45,585 INFO L175 Difference]: Start difference. First operand has 952 places, 836 transitions, 18569 flow. Second operand 43 states and 1310 transitions. [2022-09-16 11:42:45,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 994 places, 995 transitions, 23422 flow [2022-09-16 11:42:46,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 982 places, 995 transitions, 23026 flow, removed 109 selfloop flow, removed 12 redundant places. [2022-09-16 11:42:46,968 INFO L231 Difference]: Finished difference. Result has 994 places, 867 transitions, 19982 flow [2022-09-16 11:42:46,969 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18229, PETRI_DIFFERENCE_MINUEND_PLACES=940, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=836, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=19982, PETRI_PLACES=994, PETRI_TRANSITIONS=867} [2022-09-16 11:42:46,969 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 918 predicate places. [2022-09-16 11:42:46,969 INFO L495 AbstractCegarLoop]: Abstraction has has 994 places, 867 transitions, 19982 flow [2022-09-16 11:42:46,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:46,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:46,970 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:42:46,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-09-16 11:42:46,970 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:42:46,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:46,970 INFO L85 PathProgramCache]: Analyzing trace with hash -477116039, now seen corresponding path program 12 times [2022-09-16 11:42:46,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:46,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24946846] [2022-09-16 11:42:46,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:46,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:47,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:47,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:47,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24946846] [2022-09-16 11:42:47,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24946846] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:47,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:47,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:42:47,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729466731] [2022-09-16 11:42:47,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:47,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:42:47,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:47,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:42:47,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:42:47,357 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:42:47,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 994 places, 867 transitions, 19982 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:47,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:47,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:42:47,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:53,504 INFO L130 PetriNetUnfolder]: 801/3431 cut-off events. [2022-09-16 11:42:53,505 INFO L131 PetriNetUnfolder]: For 160447/160449 co-relation queries the response was YES. [2022-09-16 11:42:53,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32805 conditions, 3431 events. 801/3431 cut-off events. For 160447/160449 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 34882 event pairs, 23 based on Foata normal form. 23/3428 useless extension candidates. Maximal degree in co-relation 32438. Up to 568 conditions per place. [2022-09-16 11:42:53,583 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 557 selfloop transitions, 558 changer transitions 0/1140 dead transitions. [2022-09-16 11:42:53,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1055 places, 1140 transitions, 27217 flow [2022-09-16 11:42:53,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-09-16 11:42:53,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-09-16 11:42:53,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 1861 transitions. [2022-09-16 11:42:53,585 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4111798497569598 [2022-09-16 11:42:53,585 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 1861 transitions. [2022-09-16 11:42:53,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 1861 transitions. [2022-09-16 11:42:53,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:53,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 1861 transitions. [2022-09-16 11:42:53,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 30.016129032258064) internal successors, (1861), 62 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:53,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 73.0) internal successors, (4599), 63 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:53,590 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 73.0) internal successors, (4599), 63 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:53,591 INFO L175 Difference]: Start difference. First operand has 994 places, 867 transitions, 19982 flow. Second operand 62 states and 1861 transitions. [2022-09-16 11:42:53,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1055 places, 1140 transitions, 27217 flow [2022-09-16 11:42:54,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1033 places, 1140 transitions, 26702 flow, removed 104 selfloop flow, removed 22 redundant places. [2022-09-16 11:42:54,961 INFO L231 Difference]: Finished difference. Result has 1045 places, 942 transitions, 22950 flow [2022-09-16 11:42:54,962 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=19557, PETRI_DIFFERENCE_MINUEND_PLACES=972, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=867, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=483, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=22950, PETRI_PLACES=1045, PETRI_TRANSITIONS=942} [2022-09-16 11:42:54,963 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 969 predicate places. [2022-09-16 11:42:54,963 INFO L495 AbstractCegarLoop]: Abstraction has has 1045 places, 942 transitions, 22950 flow [2022-09-16 11:42:54,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:54,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:54,963 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:42:54,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-09-16 11:42:54,963 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:42:54,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:54,964 INFO L85 PathProgramCache]: Analyzing trace with hash -399715382, now seen corresponding path program 9 times [2022-09-16 11:42:54,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:54,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553886187] [2022-09-16 11:42:54,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:54,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:55,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:55,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:55,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553886187] [2022-09-16 11:42:55,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553886187] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:55,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:55,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:42:55,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121178175] [2022-09-16 11:42:55,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:55,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:42:55,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:55,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:42:55,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:42:55,359 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:42:55,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1045 places, 942 transitions, 22950 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:55,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:55,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:42:55,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:59,232 INFO L130 PetriNetUnfolder]: 805/3475 cut-off events. [2022-09-16 11:42:59,232 INFO L131 PetriNetUnfolder]: For 186272/186276 co-relation queries the response was YES. [2022-09-16 11:42:59,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34601 conditions, 3475 events. 805/3475 cut-off events. For 186272/186276 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 35616 event pairs, 144 based on Foata normal form. 3/3451 useless extension candidates. Maximal degree in co-relation 34229. Up to 1342 conditions per place. [2022-09-16 11:42:59,317 INFO L137 encePairwiseOnDemand]: 48/73 looper letters, 863 selfloop transitions, 193 changer transitions 0/1081 dead transitions. [2022-09-16 11:42:59,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1074 places, 1081 transitions, 27314 flow [2022-09-16 11:42:59,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-16 11:42:59,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-09-16 11:42:59,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 940 transitions. [2022-09-16 11:42:59,318 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4292237442922374 [2022-09-16 11:42:59,318 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 940 transitions. [2022-09-16 11:42:59,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 940 transitions. [2022-09-16 11:42:59,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:59,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 940 transitions. [2022-09-16 11:42:59,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 31.333333333333332) internal successors, (940), 30 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:59,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 73.0) internal successors, (2263), 31 states have internal predecessors, (2263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:59,321 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 73.0) internal successors, (2263), 31 states have internal predecessors, (2263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:59,321 INFO L175 Difference]: Start difference. First operand has 1045 places, 942 transitions, 22950 flow. Second operand 30 states and 940 transitions. [2022-09-16 11:42:59,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1074 places, 1081 transitions, 27314 flow [2022-09-16 11:43:00,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1043 places, 1081 transitions, 26061 flow, removed 136 selfloop flow, removed 31 redundant places. [2022-09-16 11:43:00,713 INFO L231 Difference]: Finished difference. Result has 1052 places, 970 transitions, 22931 flow [2022-09-16 11:43:00,714 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=21824, PETRI_DIFFERENCE_MINUEND_PLACES=1014, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=763, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=22931, PETRI_PLACES=1052, PETRI_TRANSITIONS=970} [2022-09-16 11:43:00,714 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 976 predicate places. [2022-09-16 11:43:00,714 INFO L495 AbstractCegarLoop]: Abstraction has has 1052 places, 970 transitions, 22931 flow [2022-09-16 11:43:00,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:00,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:43:00,715 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:43:00,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-09-16 11:43:00,715 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:43:00,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:43:00,715 INFO L85 PathProgramCache]: Analyzing trace with hash 406284046, now seen corresponding path program 10 times [2022-09-16 11:43:00,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:43:00,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755287149] [2022-09-16 11:43:00,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:43:00,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:43:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:43:01,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:43:01,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:43:01,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755287149] [2022-09-16 11:43:01,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755287149] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:43:01,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:43:01,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:43:01,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12167062] [2022-09-16 11:43:01,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:43:01,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:43:01,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:43:01,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:43:01,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:43:01,212 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:43:01,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1052 places, 970 transitions, 22931 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:01,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:43:01,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:43:01,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:43:07,687 INFO L130 PetriNetUnfolder]: 807/3489 cut-off events. [2022-09-16 11:43:07,687 INFO L131 PetriNetUnfolder]: For 173332/173336 co-relation queries the response was YES. [2022-09-16 11:43:07,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34222 conditions, 3489 events. 807/3489 cut-off events. For 173332/173336 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 35570 event pairs, 82 based on Foata normal form. 5/3467 useless extension candidates. Maximal degree in co-relation 33854. Up to 931 conditions per place. [2022-09-16 11:43:07,836 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 818 selfloop transitions, 318 changer transitions 0/1161 dead transitions. [2022-09-16 11:43:07,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1110 places, 1161 transitions, 28042 flow [2022-09-16 11:43:07,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-09-16 11:43:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2022-09-16 11:43:07,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 1767 transitions. [2022-09-16 11:43:07,838 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4102623635941491 [2022-09-16 11:43:07,839 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 1767 transitions. [2022-09-16 11:43:07,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 1767 transitions. [2022-09-16 11:43:07,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:43:07,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 1767 transitions. [2022-09-16 11:43:07,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 29.949152542372882) internal successors, (1767), 59 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:07,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 73.0) internal successors, (4380), 60 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:07,844 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 73.0) internal successors, (4380), 60 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:07,844 INFO L175 Difference]: Start difference. First operand has 1052 places, 970 transitions, 22931 flow. Second operand 59 states and 1767 transitions. [2022-09-16 11:43:07,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1110 places, 1161 transitions, 28042 flow [2022-09-16 11:43:09,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1100 places, 1161 transitions, 27739 flow, removed 64 selfloop flow, removed 10 redundant places. [2022-09-16 11:43:09,315 INFO L231 Difference]: Finished difference. Result has 1108 places, 1012 transitions, 24118 flow [2022-09-16 11:43:09,317 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=22694, PETRI_DIFFERENCE_MINUEND_PLACES=1042, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=970, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=683, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=24118, PETRI_PLACES=1108, PETRI_TRANSITIONS=1012} [2022-09-16 11:43:09,317 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1032 predicate places. [2022-09-16 11:43:09,317 INFO L495 AbstractCegarLoop]: Abstraction has has 1108 places, 1012 transitions, 24118 flow [2022-09-16 11:43:09,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:09,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:43:09,318 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:43:09,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-09-16 11:43:09,318 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:43:09,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:43:09,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1451480246, now seen corresponding path program 11 times [2022-09-16 11:43:09,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:43:09,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252534162] [2022-09-16 11:43:09,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:43:09,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:43:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:43:09,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:43:09,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:43:09,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252534162] [2022-09-16 11:43:09,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252534162] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:43:09,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:43:09,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:43:09,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245316344] [2022-09-16 11:43:09,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:43:09,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:43:09,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:43:09,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:43:09,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:43:09,679 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:43:09,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1108 places, 1012 transitions, 24118 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:09,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:43:09,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:43:09,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:43:15,865 INFO L130 PetriNetUnfolder]: 807/3470 cut-off events. [2022-09-16 11:43:15,865 INFO L131 PetriNetUnfolder]: For 182442/182446 co-relation queries the response was YES. [2022-09-16 11:43:15,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34828 conditions, 3470 events. 807/3470 cut-off events. For 182442/182446 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 35361 event pairs, 16 based on Foata normal form. 3/3446 useless extension candidates. Maximal degree in co-relation 34448. Up to 756 conditions per place. [2022-09-16 11:43:15,946 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 739 selfloop transitions, 455 changer transitions 0/1219 dead transitions. [2022-09-16 11:43:15,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1164 places, 1219 transitions, 29646 flow [2022-09-16 11:43:15,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-09-16 11:43:15,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2022-09-16 11:43:15,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 1720 transitions. [2022-09-16 11:43:15,948 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.41336217255467433 [2022-09-16 11:43:15,948 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 1720 transitions. [2022-09-16 11:43:15,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 1720 transitions. [2022-09-16 11:43:15,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:43:15,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 1720 transitions. [2022-09-16 11:43:15,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 30.17543859649123) internal successors, (1720), 57 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:15,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 73.0) internal successors, (4234), 58 states have internal predecessors, (4234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:15,953 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 73.0) internal successors, (4234), 58 states have internal predecessors, (4234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:15,953 INFO L175 Difference]: Start difference. First operand has 1108 places, 1012 transitions, 24118 flow. Second operand 57 states and 1720 transitions. [2022-09-16 11:43:15,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1164 places, 1219 transitions, 29646 flow [2022-09-16 11:43:17,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1141 places, 1219 transitions, 28932 flow, removed 38 selfloop flow, removed 23 redundant places. [2022-09-16 11:43:17,404 INFO L231 Difference]: Finished difference. Result has 1145 places, 1025 transitions, 24703 flow [2022-09-16 11:43:17,405 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=23427, PETRI_DIFFERENCE_MINUEND_PLACES=1085, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1012, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=442, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=24703, PETRI_PLACES=1145, PETRI_TRANSITIONS=1025} [2022-09-16 11:43:17,405 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1069 predicate places. [2022-09-16 11:43:17,405 INFO L495 AbstractCegarLoop]: Abstraction has has 1145 places, 1025 transitions, 24703 flow [2022-09-16 11:43:17,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:17,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:43:17,405 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:43:17,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-09-16 11:43:17,406 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:43:17,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:43:17,406 INFO L85 PathProgramCache]: Analyzing trace with hash 221570866, now seen corresponding path program 12 times [2022-09-16 11:43:17,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:43:17,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058803358] [2022-09-16 11:43:17,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:43:17,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:43:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:43:17,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:43:17,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:43:17,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058803358] [2022-09-16 11:43:17,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058803358] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:43:17,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:43:17,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:43:17,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736089610] [2022-09-16 11:43:17,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:43:17,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:43:17,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:43:17,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:43:17,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:43:17,832 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:43:17,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1145 places, 1025 transitions, 24703 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:17,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:43:17,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:43:17,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:43:21,693 INFO L130 PetriNetUnfolder]: 834/3583 cut-off events. [2022-09-16 11:43:21,693 INFO L131 PetriNetUnfolder]: For 202168/202172 co-relation queries the response was YES. [2022-09-16 11:43:21,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36197 conditions, 3583 events. 834/3583 cut-off events. For 202168/202172 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 36879 event pairs, 124 based on Foata normal form. 3/3559 useless extension candidates. Maximal degree in co-relation 35820. Up to 1384 conditions per place. [2022-09-16 11:43:21,773 INFO L137 encePairwiseOnDemand]: 48/73 looper letters, 887 selfloop transitions, 256 changer transitions 0/1168 dead transitions. [2022-09-16 11:43:21,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1174 places, 1168 transitions, 29264 flow [2022-09-16 11:43:21,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-16 11:43:21,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-09-16 11:43:21,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 938 transitions. [2022-09-16 11:43:21,775 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.428310502283105 [2022-09-16 11:43:21,775 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 938 transitions. [2022-09-16 11:43:21,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 938 transitions. [2022-09-16 11:43:21,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:43:21,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 938 transitions. [2022-09-16 11:43:21,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 31.266666666666666) internal successors, (938), 30 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:21,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 73.0) internal successors, (2263), 31 states have internal predecessors, (2263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:21,778 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 73.0) internal successors, (2263), 31 states have internal predecessors, (2263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:21,778 INFO L175 Difference]: Start difference. First operand has 1145 places, 1025 transitions, 24703 flow. Second operand 30 states and 938 transitions. [2022-09-16 11:43:21,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1174 places, 1168 transitions, 29264 flow [2022-09-16 11:43:23,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1124 places, 1168 transitions, 28436 flow, removed 27 selfloop flow, removed 50 redundant places. [2022-09-16 11:43:23,139 INFO L231 Difference]: Finished difference. Result has 1133 places, 1055 transitions, 25266 flow [2022-09-16 11:43:23,140 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=23919, PETRI_DIFFERENCE_MINUEND_PLACES=1095, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1025, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=784, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=25266, PETRI_PLACES=1133, PETRI_TRANSITIONS=1055} [2022-09-16 11:43:23,140 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1057 predicate places. [2022-09-16 11:43:23,140 INFO L495 AbstractCegarLoop]: Abstraction has has 1133 places, 1055 transitions, 25266 flow [2022-09-16 11:43:23,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:23,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:43:23,141 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:43:23,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-09-16 11:43:23,141 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:43:23,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:43:23,141 INFO L85 PathProgramCache]: Analyzing trace with hash 368577168, now seen corresponding path program 13 times [2022-09-16 11:43:23,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:43:23,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588397065] [2022-09-16 11:43:23,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:43:23,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:43:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:43:23,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:43:23,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:43:23,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588397065] [2022-09-16 11:43:23,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588397065] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:43:23,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:43:23,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:43:23,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894004208] [2022-09-16 11:43:23,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:43:23,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:43:23,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:43:23,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:43:23,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:43:23,553 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:43:23,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1133 places, 1055 transitions, 25266 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:23,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:43:23,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:43:23,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:43:28,138 INFO L130 PetriNetUnfolder]: 839/3597 cut-off events. [2022-09-16 11:43:28,138 INFO L131 PetriNetUnfolder]: For 197973/197977 co-relation queries the response was YES. [2022-09-16 11:43:28,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36430 conditions, 3597 events. 839/3597 cut-off events. For 197973/197977 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 36880 event pairs, 73 based on Foata normal form. 3/3573 useless extension candidates. Maximal degree in co-relation 36052. Up to 1001 conditions per place. [2022-09-16 11:43:28,318 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 857 selfloop transitions, 345 changer transitions 0/1227 dead transitions. [2022-09-16 11:43:28,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1171 places, 1227 transitions, 30223 flow [2022-09-16 11:43:28,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-09-16 11:43:28,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-09-16 11:43:28,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1199 transitions. [2022-09-16 11:43:28,320 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.42114506498068144 [2022-09-16 11:43:28,320 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1199 transitions. [2022-09-16 11:43:28,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1199 transitions. [2022-09-16 11:43:28,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:43:28,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1199 transitions. [2022-09-16 11:43:28,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 30.743589743589745) internal successors, (1199), 39 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:28,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:28,324 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:28,324 INFO L175 Difference]: Start difference. First operand has 1133 places, 1055 transitions, 25266 flow. Second operand 39 states and 1199 transitions. [2022-09-16 11:43:28,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1171 places, 1227 transitions, 30223 flow [2022-09-16 11:43:29,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1158 places, 1227 transitions, 29736 flow, removed 72 selfloop flow, removed 13 redundant places. [2022-09-16 11:43:30,012 INFO L231 Difference]: Finished difference. Result has 1167 places, 1084 transitions, 26159 flow [2022-09-16 11:43:30,013 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=24827, PETRI_DIFFERENCE_MINUEND_PLACES=1120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1055, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=318, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=727, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=26159, PETRI_PLACES=1167, PETRI_TRANSITIONS=1084} [2022-09-16 11:43:30,013 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1091 predicate places. [2022-09-16 11:43:30,013 INFO L495 AbstractCegarLoop]: Abstraction has has 1167 places, 1084 transitions, 26159 flow [2022-09-16 11:43:30,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:30,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:43:30,014 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:43:30,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-09-16 11:43:30,014 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:43:30,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:43:30,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1591162762, now seen corresponding path program 14 times [2022-09-16 11:43:30,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:43:30,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33550676] [2022-09-16 11:43:30,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:43:30,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:43:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:43:30,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:43:30,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:43:30,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33550676] [2022-09-16 11:43:30,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33550676] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:43:30,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:43:30,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:43:30,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793684333] [2022-09-16 11:43:30,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:43:30,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:43:30,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:43:30,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:43:30,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:43:30,447 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:43:30,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1167 places, 1084 transitions, 26159 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:30,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:43:30,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:43:30,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:43:36,679 INFO L130 PetriNetUnfolder]: 841/3643 cut-off events. [2022-09-16 11:43:36,680 INFO L131 PetriNetUnfolder]: For 221954/221958 co-relation queries the response was YES. [2022-09-16 11:43:36,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37174 conditions, 3643 events. 841/3643 cut-off events. For 221954/221958 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 37808 event pairs, 53 based on Foata normal form. 3/3619 useless extension candidates. Maximal degree in co-relation 36785. Up to 1190 conditions per place. [2022-09-16 11:43:36,765 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 756 selfloop transitions, 477 changer transitions 0/1258 dead transitions. [2022-09-16 11:43:36,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1223 places, 1258 transitions, 31104 flow [2022-09-16 11:43:36,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-09-16 11:43:36,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2022-09-16 11:43:36,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 1700 transitions. [2022-09-16 11:43:36,767 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4085556356645037 [2022-09-16 11:43:36,767 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 1700 transitions. [2022-09-16 11:43:36,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 1700 transitions. [2022-09-16 11:43:36,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:43:36,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 1700 transitions. [2022-09-16 11:43:36,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 29.82456140350877) internal successors, (1700), 57 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:36,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 73.0) internal successors, (4234), 58 states have internal predecessors, (4234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:36,771 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 73.0) internal successors, (4234), 58 states have internal predecessors, (4234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:36,771 INFO L175 Difference]: Start difference. First operand has 1167 places, 1084 transitions, 26159 flow. Second operand 57 states and 1700 transitions. [2022-09-16 11:43:36,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1223 places, 1258 transitions, 31104 flow [2022-09-16 11:43:38,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1204 places, 1258 transitions, 30495 flow, removed 38 selfloop flow, removed 19 redundant places. [2022-09-16 11:43:38,435 INFO L231 Difference]: Finished difference. Result has 1210 places, 1107 transitions, 27173 flow [2022-09-16 11:43:38,436 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=25586, PETRI_DIFFERENCE_MINUEND_PLACES=1148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1084, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=454, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=27173, PETRI_PLACES=1210, PETRI_TRANSITIONS=1107} [2022-09-16 11:43:38,436 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1134 predicate places. [2022-09-16 11:43:38,437 INFO L495 AbstractCegarLoop]: Abstraction has has 1210 places, 1107 transitions, 27173 flow [2022-09-16 11:43:38,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:38,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:43:38,437 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:43:38,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-09-16 11:43:38,437 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:43:38,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:43:38,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1094530554, now seen corresponding path program 15 times [2022-09-16 11:43:38,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:43:38,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638069521] [2022-09-16 11:43:38,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:43:38,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:43:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:43:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:43:38,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:43:38,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638069521] [2022-09-16 11:43:38,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638069521] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:43:38,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:43:38,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:43:38,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750875369] [2022-09-16 11:43:38,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:43:38,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:43:38,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:43:38,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:43:38,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:43:38,872 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:43:38,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1210 places, 1107 transitions, 27173 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:38,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:43:38,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:43:38,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:43:42,973 INFO L130 PetriNetUnfolder]: 860/3680 cut-off events. [2022-09-16 11:43:42,974 INFO L131 PetriNetUnfolder]: For 218288/218292 co-relation queries the response was YES. [2022-09-16 11:43:43,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38339 conditions, 3680 events. 860/3680 cut-off events. For 218288/218292 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 37937 event pairs, 62 based on Foata normal form. 3/3656 useless extension candidates. Maximal degree in co-relation 37944. Up to 999 conditions per place. [2022-09-16 11:43:43,103 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 888 selfloop transitions, 369 changer transitions 0/1282 dead transitions. [2022-09-16 11:43:43,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1242 places, 1282 transitions, 32686 flow [2022-09-16 11:43:43,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-09-16 11:43:43,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-09-16 11:43:43,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1026 transitions. [2022-09-16 11:43:43,104 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4259028642590286 [2022-09-16 11:43:43,105 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1026 transitions. [2022-09-16 11:43:43,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1026 transitions. [2022-09-16 11:43:43,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:43:43,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1026 transitions. [2022-09-16 11:43:43,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 31.09090909090909) internal successors, (1026), 33 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:43,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 73.0) internal successors, (2482), 34 states have internal predecessors, (2482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:43,108 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 73.0) internal successors, (2482), 34 states have internal predecessors, (2482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:43,108 INFO L175 Difference]: Start difference. First operand has 1210 places, 1107 transitions, 27173 flow. Second operand 33 states and 1026 transitions. [2022-09-16 11:43:43,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1242 places, 1282 transitions, 32686 flow [2022-09-16 11:43:44,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1190 places, 1282 transitions, 31786 flow, removed 43 selfloop flow, removed 52 redundant places. [2022-09-16 11:43:44,886 INFO L231 Difference]: Finished difference. Result has 1201 places, 1131 transitions, 28025 flow [2022-09-16 11:43:44,887 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=26396, PETRI_DIFFERENCE_MINUEND_PLACES=1158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=753, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=28025, PETRI_PLACES=1201, PETRI_TRANSITIONS=1131} [2022-09-16 11:43:44,888 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1125 predicate places. [2022-09-16 11:43:44,888 INFO L495 AbstractCegarLoop]: Abstraction has has 1201 places, 1131 transitions, 28025 flow [2022-09-16 11:43:44,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:44,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:43:44,888 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:43:44,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-09-16 11:43:44,888 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:43:44,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:43:44,889 INFO L85 PathProgramCache]: Analyzing trace with hash 579857740, now seen corresponding path program 16 times [2022-09-16 11:43:44,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:43:44,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083547625] [2022-09-16 11:43:44,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:43:44,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:43:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:43:45,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:43:45,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:43:45,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083547625] [2022-09-16 11:43:45,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083547625] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:43:45,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:43:45,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:43:45,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378987466] [2022-09-16 11:43:45,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:43:45,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:43:45,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:43:45,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:43:45,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:43:45,471 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:43:45,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1201 places, 1131 transitions, 28025 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:45,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:43:45,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:43:45,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:43:49,921 INFO L130 PetriNetUnfolder]: 862/3720 cut-off events. [2022-09-16 11:43:49,921 INFO L131 PetriNetUnfolder]: For 243838/243842 co-relation queries the response was YES. [2022-09-16 11:43:50,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38982 conditions, 3720 events. 862/3720 cut-off events. For 243838/243842 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 38656 event pairs, 108 based on Foata normal form. 3/3696 useless extension candidates. Maximal degree in co-relation 38592. Up to 1367 conditions per place. [2022-09-16 11:43:50,015 INFO L137 encePairwiseOnDemand]: 48/73 looper letters, 902 selfloop transitions, 342 changer transitions 0/1269 dead transitions. [2022-09-16 11:43:50,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1235 places, 1269 transitions, 32586 flow [2022-09-16 11:43:50,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-09-16 11:43:50,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-09-16 11:43:50,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1077 transitions. [2022-09-16 11:43:50,016 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4215264187866928 [2022-09-16 11:43:50,016 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1077 transitions. [2022-09-16 11:43:50,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1077 transitions. [2022-09-16 11:43:50,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:43:50,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1077 transitions. [2022-09-16 11:43:50,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 30.771428571428572) internal successors, (1077), 35 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:50,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 73.0) internal successors, (2628), 36 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:50,019 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 73.0) internal successors, (2628), 36 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:50,019 INFO L175 Difference]: Start difference. First operand has 1201 places, 1131 transitions, 28025 flow. Second operand 35 states and 1077 transitions. [2022-09-16 11:43:50,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1235 places, 1269 transitions, 32586 flow [2022-09-16 11:43:51,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1217 places, 1269 transitions, 31794 flow, removed 96 selfloop flow, removed 18 redundant places. [2022-09-16 11:43:51,772 INFO L231 Difference]: Finished difference. Result has 1224 places, 1150 transitions, 28504 flow [2022-09-16 11:43:51,773 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=27305, PETRI_DIFFERENCE_MINUEND_PLACES=1183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=325, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=800, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=28504, PETRI_PLACES=1224, PETRI_TRANSITIONS=1150} [2022-09-16 11:43:51,773 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1148 predicate places. [2022-09-16 11:43:51,773 INFO L495 AbstractCegarLoop]: Abstraction has has 1224 places, 1150 transitions, 28504 flow [2022-09-16 11:43:51,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:51,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:43:51,774 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:43:51,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-09-16 11:43:51,774 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:43:51,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:43:51,774 INFO L85 PathProgramCache]: Analyzing trace with hash -2146295418, now seen corresponding path program 17 times [2022-09-16 11:43:51,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:43:51,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822172352] [2022-09-16 11:43:51,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:43:51,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:43:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:43:52,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:43:52,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:43:52,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822172352] [2022-09-16 11:43:52,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822172352] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:43:52,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:43:52,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:43:52,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736604949] [2022-09-16 11:43:52,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:43:52,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:43:52,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:43:52,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:43:52,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:43:52,174 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:43:52,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1224 places, 1150 transitions, 28504 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:52,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:43:52,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:43:52,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:43:59,148 INFO L130 PetriNetUnfolder]: 864/3753 cut-off events. [2022-09-16 11:43:59,149 INFO L131 PetriNetUnfolder]: For 248757/248761 co-relation queries the response was YES. [2022-09-16 11:43:59,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39299 conditions, 3753 events. 864/3753 cut-off events. For 248757/248761 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 39202 event pairs, 50 based on Foata normal form. 3/3729 useless extension candidates. Maximal degree in co-relation 38905. Up to 1100 conditions per place. [2022-09-16 11:43:59,368 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 721 selfloop transitions, 578 changer transitions 0/1324 dead transitions. [2022-09-16 11:43:59,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1286 places, 1324 transitions, 33426 flow [2022-09-16 11:43:59,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-09-16 11:43:59,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2022-09-16 11:43:59,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 1865 transitions. [2022-09-16 11:43:59,370 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4055229397695151 [2022-09-16 11:43:59,370 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 1865 transitions. [2022-09-16 11:43:59,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 1865 transitions. [2022-09-16 11:43:59,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:43:59,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 1865 transitions. [2022-09-16 11:43:59,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 29.603174603174605) internal successors, (1865), 63 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:59,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 73.0) internal successors, (4672), 64 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:59,374 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 73.0) internal successors, (4672), 64 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:59,374 INFO L175 Difference]: Start difference. First operand has 1224 places, 1150 transitions, 28504 flow. Second operand 63 states and 1865 transitions. [2022-09-16 11:43:59,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1286 places, 1324 transitions, 33426 flow [2022-09-16 11:44:01,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1267 places, 1324 transitions, 32858 flow, removed 42 selfloop flow, removed 19 redundant places. [2022-09-16 11:44:01,055 INFO L231 Difference]: Finished difference. Result has 1273 places, 1166 transitions, 29633 flow [2022-09-16 11:44:01,056 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=27950, PETRI_DIFFERENCE_MINUEND_PLACES=1205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=562, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=581, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=29633, PETRI_PLACES=1273, PETRI_TRANSITIONS=1166} [2022-09-16 11:44:01,056 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1197 predicate places. [2022-09-16 11:44:01,056 INFO L495 AbstractCegarLoop]: Abstraction has has 1273 places, 1166 transitions, 29633 flow [2022-09-16 11:44:01,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:01,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:01,057 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:01,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-09-16 11:44:01,057 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:44:01,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:01,057 INFO L85 PathProgramCache]: Analyzing trace with hash -699250246, now seen corresponding path program 18 times [2022-09-16 11:44:01,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:01,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815453768] [2022-09-16 11:44:01,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:01,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:01,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:01,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:01,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815453768] [2022-09-16 11:44:01,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815453768] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:01,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:01,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:44:01,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566487358] [2022-09-16 11:44:01,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:01,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:44:01,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:01,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:44:01,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:44:01,445 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:44:01,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1273 places, 1166 transitions, 29633 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:01,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:01,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:44:01,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:05,581 INFO L130 PetriNetUnfolder]: 863/3733 cut-off events. [2022-09-16 11:44:05,581 INFO L131 PetriNetUnfolder]: For 244859/244863 co-relation queries the response was YES. [2022-09-16 11:44:05,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40235 conditions, 3733 events. 863/3733 cut-off events. For 244859/244863 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 38800 event pairs, 68 based on Foata normal form. 3/3709 useless extension candidates. Maximal degree in co-relation 39836. Up to 898 conditions per place. [2022-09-16 11:44:05,667 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 858 selfloop transitions, 447 changer transitions 0/1330 dead transitions. [2022-09-16 11:44:05,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1305 places, 1330 transitions, 34782 flow [2022-09-16 11:44:05,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-09-16 11:44:05,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-09-16 11:44:05,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1020 transitions. [2022-09-16 11:44:05,669 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.42341220423412207 [2022-09-16 11:44:05,669 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1020 transitions. [2022-09-16 11:44:05,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1020 transitions. [2022-09-16 11:44:05,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:05,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1020 transitions. [2022-09-16 11:44:05,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 30.90909090909091) internal successors, (1020), 33 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:05,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 73.0) internal successors, (2482), 34 states have internal predecessors, (2482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:05,671 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 73.0) internal successors, (2482), 34 states have internal predecessors, (2482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:05,671 INFO L175 Difference]: Start difference. First operand has 1273 places, 1166 transitions, 29633 flow. Second operand 33 states and 1020 transitions. [2022-09-16 11:44:05,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1305 places, 1330 transitions, 34782 flow [2022-09-16 11:44:07,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1250 places, 1330 transitions, 33702 flow, removed 33 selfloop flow, removed 55 redundant places. [2022-09-16 11:44:07,588 INFO L231 Difference]: Finished difference. Result has 1256 places, 1180 transitions, 30011 flow [2022-09-16 11:44:07,589 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=28583, PETRI_DIFFERENCE_MINUEND_PLACES=1218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=434, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=727, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=30011, PETRI_PLACES=1256, PETRI_TRANSITIONS=1180} [2022-09-16 11:44:07,590 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1180 predicate places. [2022-09-16 11:44:07,590 INFO L495 AbstractCegarLoop]: Abstraction has has 1256 places, 1180 transitions, 30011 flow [2022-09-16 11:44:07,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:07,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:07,590 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:07,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-09-16 11:44:07,590 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:44:07,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:07,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1314271524, now seen corresponding path program 19 times [2022-09-16 11:44:07,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:07,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523451526] [2022-09-16 11:44:07,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:07,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:08,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:08,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523451526] [2022-09-16 11:44:08,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523451526] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:08,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:08,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:44:08,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973163679] [2022-09-16 11:44:08,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:08,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:44:08,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:08,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:44:08,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:44:08,019 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:44:08,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1256 places, 1180 transitions, 30011 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:08,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:08,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:44:08,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:12,233 INFO L130 PetriNetUnfolder]: 865/3750 cut-off events. [2022-09-16 11:44:12,233 INFO L131 PetriNetUnfolder]: For 255591/255595 co-relation queries the response was YES. [2022-09-16 11:44:12,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40764 conditions, 3750 events. 865/3750 cut-off events. For 255591/255595 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 39066 event pairs, 68 based on Foata normal form. 3/3726 useless extension candidates. Maximal degree in co-relation 40361. Up to 898 conditions per place. [2022-09-16 11:44:12,332 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 862 selfloop transitions, 455 changer transitions 0/1342 dead transitions. [2022-09-16 11:44:12,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1289 places, 1342 transitions, 35109 flow [2022-09-16 11:44:12,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-09-16 11:44:12,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-09-16 11:44:12,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1050 transitions. [2022-09-16 11:44:12,334 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.42304593070104757 [2022-09-16 11:44:12,334 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1050 transitions. [2022-09-16 11:44:12,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1050 transitions. [2022-09-16 11:44:12,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:12,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1050 transitions. [2022-09-16 11:44:12,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 30.88235294117647) internal successors, (1050), 34 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:12,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:12,337 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:12,337 INFO L175 Difference]: Start difference. First operand has 1256 places, 1180 transitions, 30011 flow. Second operand 34 states and 1050 transitions. [2022-09-16 11:44:12,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1289 places, 1342 transitions, 35109 flow [2022-09-16 11:44:14,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1267 places, 1342 transitions, 34128 flow, removed 69 selfloop flow, removed 22 redundant places. [2022-09-16 11:44:14,572 INFO L231 Difference]: Finished difference. Result has 1274 places, 1191 transitions, 30350 flow [2022-09-16 11:44:14,573 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=29070, PETRI_DIFFERENCE_MINUEND_PLACES=1234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=444, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=729, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=30350, PETRI_PLACES=1274, PETRI_TRANSITIONS=1191} [2022-09-16 11:44:14,573 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1198 predicate places. [2022-09-16 11:44:14,573 INFO L495 AbstractCegarLoop]: Abstraction has has 1274 places, 1191 transitions, 30350 flow [2022-09-16 11:44:14,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:14,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:14,573 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:14,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-09-16 11:44:14,574 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:44:14,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:14,574 INFO L85 PathProgramCache]: Analyzing trace with hash -891454132, now seen corresponding path program 20 times [2022-09-16 11:44:14,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:14,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776385323] [2022-09-16 11:44:14,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:14,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:14,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:14,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776385323] [2022-09-16 11:44:14,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776385323] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:14,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:14,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:44:14,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047184929] [2022-09-16 11:44:14,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:14,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:44:14,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:14,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:44:14,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:44:14,971 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:44:14,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1274 places, 1191 transitions, 30350 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:14,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:14,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:44:14,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:23,264 INFO L130 PetriNetUnfolder]: 873/3780 cut-off events. [2022-09-16 11:44:23,265 INFO L131 PetriNetUnfolder]: For 262388/262392 co-relation queries the response was YES. [2022-09-16 11:44:23,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41238 conditions, 3780 events. 873/3780 cut-off events. For 262388/262392 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 39344 event pairs, 2 based on Foata normal form. 13/3766 useless extension candidates. Maximal degree in co-relation 40852. Up to 374 conditions per place. [2022-09-16 11:44:23,366 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 584 selfloop transitions, 809 changer transitions 0/1418 dead transitions. [2022-09-16 11:44:23,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1354 places, 1418 transitions, 36391 flow [2022-09-16 11:44:23,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-09-16 11:44:23,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2022-09-16 11:44:23,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 2364 transitions. [2022-09-16 11:44:23,370 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.3997970573313039 [2022-09-16 11:44:23,370 INFO L72 ComplementDD]: Start complementDD. Operand 81 states and 2364 transitions. [2022-09-16 11:44:23,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 2364 transitions. [2022-09-16 11:44:23,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:23,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 81 states and 2364 transitions. [2022-09-16 11:44:23,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 82 states, 81 states have (on average 29.185185185185187) internal successors, (2364), 81 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:23,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 82 states, 82 states have (on average 73.0) internal successors, (5986), 82 states have internal predecessors, (5986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:23,378 INFO L81 ComplementDD]: Finished complementDD. Result has 82 states, 82 states have (on average 73.0) internal successors, (5986), 82 states have internal predecessors, (5986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:23,378 INFO L175 Difference]: Start difference. First operand has 1274 places, 1191 transitions, 30350 flow. Second operand 81 states and 2364 transitions. [2022-09-16 11:44:23,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1354 places, 1418 transitions, 36391 flow [2022-09-16 11:44:25,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1332 places, 1418 transitions, 35603 flow, removed 25 selfloop flow, removed 22 redundant places. [2022-09-16 11:44:25,430 INFO L231 Difference]: Finished difference. Result has 1341 places, 1237 transitions, 32275 flow [2022-09-16 11:44:25,430 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=29590, PETRI_DIFFERENCE_MINUEND_PLACES=1252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=765, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=81, PETRI_FLOW=32275, PETRI_PLACES=1341, PETRI_TRANSITIONS=1237} [2022-09-16 11:44:25,431 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1265 predicate places. [2022-09-16 11:44:25,431 INFO L495 AbstractCegarLoop]: Abstraction has has 1341 places, 1237 transitions, 32275 flow [2022-09-16 11:44:25,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:25,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:25,431 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:25,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-09-16 11:44:25,431 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:44:25,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:25,432 INFO L85 PathProgramCache]: Analyzing trace with hash -250505504, now seen corresponding path program 21 times [2022-09-16 11:44:25,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:25,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456483963] [2022-09-16 11:44:25,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:25,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:25,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:25,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456483963] [2022-09-16 11:44:25,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456483963] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:25,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:25,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:44:25,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118572270] [2022-09-16 11:44:25,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:25,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:44:25,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:25,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:44:25,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:44:25,824 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:44:25,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1341 places, 1237 transitions, 32275 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:25,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:25,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:44:25,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:34,486 INFO L130 PetriNetUnfolder]: 873/3767 cut-off events. [2022-09-16 11:44:34,486 INFO L131 PetriNetUnfolder]: For 270055/270059 co-relation queries the response was YES. [2022-09-16 11:44:34,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42264 conditions, 3767 events. 873/3767 cut-off events. For 270055/270059 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 39228 event pairs, 2 based on Foata normal form. 3/3743 useless extension candidates. Maximal degree in co-relation 41848. Up to 374 conditions per place. [2022-09-16 11:44:34,589 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 564 selfloop transitions, 820 changer transitions 0/1409 dead transitions. [2022-09-16 11:44:34,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1419 places, 1409 transitions, 37385 flow [2022-09-16 11:44:34,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-09-16 11:44:34,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-09-16 11:44:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 2320 transitions. [2022-09-16 11:44:34,591 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.3972602739726027 [2022-09-16 11:44:34,591 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 2320 transitions. [2022-09-16 11:44:34,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 2320 transitions. [2022-09-16 11:44:34,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:34,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 2320 transitions. [2022-09-16 11:44:34,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 29.0) internal successors, (2320), 80 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:34,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 73.0) internal successors, (5913), 81 states have internal predecessors, (5913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:34,597 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 73.0) internal successors, (5913), 81 states have internal predecessors, (5913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:34,597 INFO L175 Difference]: Start difference. First operand has 1341 places, 1237 transitions, 32275 flow. Second operand 80 states and 2320 transitions. [2022-09-16 11:44:34,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1419 places, 1409 transitions, 37385 flow [2022-09-16 11:44:36,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1360 places, 1409 transitions, 35748 flow, removed 74 selfloop flow, removed 59 redundant places. [2022-09-16 11:44:36,965 INFO L231 Difference]: Finished difference. Result has 1360 places, 1236 transitions, 32262 flow [2022-09-16 11:44:36,966 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=30622, PETRI_DIFFERENCE_MINUEND_PLACES=1281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=820, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=32262, PETRI_PLACES=1360, PETRI_TRANSITIONS=1236} [2022-09-16 11:44:36,967 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1284 predicate places. [2022-09-16 11:44:36,967 INFO L495 AbstractCegarLoop]: Abstraction has has 1360 places, 1236 transitions, 32262 flow [2022-09-16 11:44:36,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:36,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:36,967 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:36,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-09-16 11:44:36,967 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:44:36,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:36,968 INFO L85 PathProgramCache]: Analyzing trace with hash 956608903, now seen corresponding path program 13 times [2022-09-16 11:44:36,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:36,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676827501] [2022-09-16 11:44:36,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:36,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:37,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:37,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:37,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676827501] [2022-09-16 11:44:37,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676827501] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:37,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:37,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:44:37,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880521557] [2022-09-16 11:44:37,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:37,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:44:37,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:37,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:44:37,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:44:37,356 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:44:37,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1360 places, 1236 transitions, 32262 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:37,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:37,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:44:37,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:41,881 INFO L130 PetriNetUnfolder]: 887/3853 cut-off events. [2022-09-16 11:44:41,881 INFO L131 PetriNetUnfolder]: For 290422/290426 co-relation queries the response was YES. [2022-09-16 11:44:41,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43124 conditions, 3853 events. 887/3853 cut-off events. For 290422/290426 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 40420 event pairs, 151 based on Foata normal form. 3/3828 useless extension candidates. Maximal degree in co-relation 42714. Up to 1502 conditions per place. [2022-09-16 11:44:41,979 INFO L137 encePairwiseOnDemand]: 48/73 looper letters, 1117 selfloop transitions, 253 changer transitions 0/1395 dead transitions. [2022-09-16 11:44:41,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1393 places, 1395 transitions, 38117 flow [2022-09-16 11:44:41,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-09-16 11:44:41,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-09-16 11:44:41,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1059 transitions. [2022-09-16 11:44:41,980 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4266720386784851 [2022-09-16 11:44:41,980 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1059 transitions. [2022-09-16 11:44:41,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1059 transitions. [2022-09-16 11:44:41,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:41,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1059 transitions. [2022-09-16 11:44:41,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 31.147058823529413) internal successors, (1059), 34 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:41,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:41,983 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:41,983 INFO L175 Difference]: Start difference. First operand has 1360 places, 1236 transitions, 32262 flow. Second operand 34 states and 1059 transitions. [2022-09-16 11:44:41,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1393 places, 1395 transitions, 38117 flow [2022-09-16 11:44:43,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1314 places, 1395 transitions, 36055 flow, removed 12 selfloop flow, removed 79 redundant places. [2022-09-16 11:44:44,024 INFO L231 Difference]: Finished difference. Result has 1327 places, 1275 transitions, 32340 flow [2022-09-16 11:44:44,025 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=30279, PETRI_DIFFERENCE_MINUEND_PLACES=1281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1004, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=32340, PETRI_PLACES=1327, PETRI_TRANSITIONS=1275} [2022-09-16 11:44:44,026 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1251 predicate places. [2022-09-16 11:44:44,026 INFO L495 AbstractCegarLoop]: Abstraction has has 1327 places, 1275 transitions, 32340 flow [2022-09-16 11:44:44,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:44,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:44,026 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:44,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-09-16 11:44:44,027 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:44:44,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:44,027 INFO L85 PathProgramCache]: Analyzing trace with hash -313394805, now seen corresponding path program 14 times [2022-09-16 11:44:44,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:44,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416586128] [2022-09-16 11:44:44,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:44,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:44,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:44,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:44,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416586128] [2022-09-16 11:44:44,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416586128] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:44,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:44,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:44:44,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100619386] [2022-09-16 11:44:44,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:44,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:44:44,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:44,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:44:44,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:44:44,414 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:44:44,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1327 places, 1275 transitions, 32340 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:44,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:44,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:44:44,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:49,286 INFO L130 PetriNetUnfolder]: 896/3886 cut-off events. [2022-09-16 11:44:49,287 INFO L131 PetriNetUnfolder]: For 287106/287110 co-relation queries the response was YES. [2022-09-16 11:44:49,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42801 conditions, 3886 events. 896/3886 cut-off events. For 287106/287110 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 40708 event pairs, 103 based on Foata normal form. 3/3860 useless extension candidates. Maximal degree in co-relation 42384. Up to 1231 conditions per place. [2022-09-16 11:44:49,383 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 1114 selfloop transitions, 314 changer transitions 0/1453 dead transitions. [2022-09-16 11:44:49,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1362 places, 1453 transitions, 38498 flow [2022-09-16 11:44:49,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-09-16 11:44:49,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-09-16 11:44:49,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1125 transitions. [2022-09-16 11:44:49,385 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2022-09-16 11:44:49,385 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1125 transitions. [2022-09-16 11:44:49,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1125 transitions. [2022-09-16 11:44:49,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:49,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1125 transitions. [2022-09-16 11:44:49,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 31.25) internal successors, (1125), 36 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 73.0) internal successors, (2701), 37 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,388 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 73.0) internal successors, (2701), 37 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,388 INFO L175 Difference]: Start difference. First operand has 1327 places, 1275 transitions, 32340 flow. Second operand 36 states and 1125 transitions. [2022-09-16 11:44:49,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1362 places, 1453 transitions, 38498 flow [2022-09-16 11:44:51,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1353 places, 1453 transitions, 38220 flow, removed 75 selfloop flow, removed 9 redundant places. [2022-09-16 11:44:51,899 INFO L231 Difference]: Finished difference. Result has 1372 places, 1306 transitions, 34377 flow [2022-09-16 11:44:51,901 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=32094, PETRI_DIFFERENCE_MINUEND_PLACES=1318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=977, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=34377, PETRI_PLACES=1372, PETRI_TRANSITIONS=1306} [2022-09-16 11:44:51,901 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1296 predicate places. [2022-09-16 11:44:51,901 INFO L495 AbstractCegarLoop]: Abstraction has has 1372 places, 1306 transitions, 34377 flow [2022-09-16 11:44:51,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:51,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:51,901 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:51,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-09-16 11:44:51,901 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:44:51,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:51,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1160116575, now seen corresponding path program 15 times [2022-09-16 11:44:51,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:51,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973015226] [2022-09-16 11:44:51,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:51,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:52,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:44:52,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:52,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973015226] [2022-09-16 11:44:52,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973015226] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:52,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:52,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:44:52,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998395946] [2022-09-16 11:44:52,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:52,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:44:52,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:52,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:44:52,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:44:52,284 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:44:52,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1372 places, 1306 transitions, 34377 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:52,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:52,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:44:52,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:57,166 INFO L130 PetriNetUnfolder]: 910/3988 cut-off events. [2022-09-16 11:44:57,166 INFO L131 PetriNetUnfolder]: For 338995/338999 co-relation queries the response was YES. [2022-09-16 11:44:57,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45041 conditions, 3988 events. 910/3988 cut-off events. For 338995/338999 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 42253 event pairs, 155 based on Foata normal form. 3/3961 useless extension candidates. Maximal degree in co-relation 44603. Up to 1556 conditions per place. [2022-09-16 11:44:57,276 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 1142 selfloop transitions, 285 changer transitions 0/1452 dead transitions. [2022-09-16 11:44:57,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1405 places, 1452 transitions, 40014 flow [2022-09-16 11:44:57,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-09-16 11:44:57,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-09-16 11:44:57,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1068 transitions. [2022-09-16 11:44:57,277 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.43029814665592264 [2022-09-16 11:44:57,277 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1068 transitions. [2022-09-16 11:44:57,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1068 transitions. [2022-09-16 11:44:57,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:57,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1068 transitions. [2022-09-16 11:44:57,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 31.41176470588235) internal successors, (1068), 34 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:57,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:57,280 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:57,280 INFO L175 Difference]: Start difference. First operand has 1372 places, 1306 transitions, 34377 flow. Second operand 34 states and 1068 transitions. [2022-09-16 11:44:57,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1405 places, 1452 transitions, 40014 flow [2022-09-16 11:44:59,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1396 places, 1452 transitions, 39802 flow, removed 52 selfloop flow, removed 9 redundant places. [2022-09-16 11:44:59,843 INFO L231 Difference]: Finished difference. Result has 1408 places, 1331 transitions, 36043 flow [2022-09-16 11:44:59,844 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=34165, PETRI_DIFFERENCE_MINUEND_PLACES=1363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1034, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=36043, PETRI_PLACES=1408, PETRI_TRANSITIONS=1331} [2022-09-16 11:44:59,845 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1332 predicate places. [2022-09-16 11:44:59,845 INFO L495 AbstractCegarLoop]: Abstraction has has 1408 places, 1331 transitions, 36043 flow [2022-09-16 11:44:59,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:59,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:59,845 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:59,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-09-16 11:44:59,846 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:44:59,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:59,846 INFO L85 PathProgramCache]: Analyzing trace with hash 501202241, now seen corresponding path program 16 times [2022-09-16 11:44:59,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:59,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802863362] [2022-09-16 11:44:59,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:59,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:00,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:00,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:00,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802863362] [2022-09-16 11:45:00,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802863362] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:00,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:00,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:45:00,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944540102] [2022-09-16 11:45:00,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:00,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:45:00,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:00,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:45:00,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:45:00,218 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:45:00,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1408 places, 1331 transitions, 36043 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:00,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:00,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:45:00,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:05,696 INFO L130 PetriNetUnfolder]: 920/4031 cut-off events. [2022-09-16 11:45:05,696 INFO L131 PetriNetUnfolder]: For 369155/369159 co-relation queries the response was YES. [2022-09-16 11:45:05,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46719 conditions, 4031 events. 920/4031 cut-off events. For 369155/369159 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 42822 event pairs, 156 based on Foata normal form. 3/4003 useless extension candidates. Maximal degree in co-relation 46267. Up to 1556 conditions per place. [2022-09-16 11:45:05,809 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 1142 selfloop transitions, 301 changer transitions 0/1468 dead transitions. [2022-09-16 11:45:05,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1444 places, 1468 transitions, 41507 flow [2022-09-16 11:45:05,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-09-16 11:45:05,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-09-16 11:45:05,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1147 transitions. [2022-09-16 11:45:05,811 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2022-09-16 11:45:05,811 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1147 transitions. [2022-09-16 11:45:05,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1147 transitions. [2022-09-16 11:45:05,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:05,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1147 transitions. [2022-09-16 11:45:05,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 31.0) internal successors, (1147), 37 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:05,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 73.0) internal successors, (2774), 38 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:05,814 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 73.0) internal successors, (2774), 38 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:05,814 INFO L175 Difference]: Start difference. First operand has 1408 places, 1331 transitions, 36043 flow. Second operand 37 states and 1147 transitions. [2022-09-16 11:45:05,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1444 places, 1468 transitions, 41507 flow [2022-09-16 11:45:08,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1426 places, 1468 transitions, 41191 flow, removed 61 selfloop flow, removed 18 redundant places. [2022-09-16 11:45:08,441 INFO L231 Difference]: Finished difference. Result has 1436 places, 1350 transitions, 37445 flow [2022-09-16 11:45:08,442 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=35743, PETRI_DIFFERENCE_MINUEND_PLACES=1390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1039, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=37445, PETRI_PLACES=1436, PETRI_TRANSITIONS=1350} [2022-09-16 11:45:08,443 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1360 predicate places. [2022-09-16 11:45:08,443 INFO L495 AbstractCegarLoop]: Abstraction has has 1436 places, 1350 transitions, 37445 flow [2022-09-16 11:45:08,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:08,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:08,443 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:08,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-09-16 11:45:08,444 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:45:08,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:08,444 INFO L85 PathProgramCache]: Analyzing trace with hash -529495595, now seen corresponding path program 17 times [2022-09-16 11:45:08,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:08,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484509357] [2022-09-16 11:45:08,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:08,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:08,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:08,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:08,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484509357] [2022-09-16 11:45:08,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484509357] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:08,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:08,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:45:08,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208901614] [2022-09-16 11:45:08,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:08,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:45:08,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:08,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:45:08,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:45:08,838 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:45:08,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1436 places, 1350 transitions, 37445 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:08,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:08,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:45:08,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:14,303 INFO L130 PetriNetUnfolder]: 932/4049 cut-off events. [2022-09-16 11:45:14,303 INFO L131 PetriNetUnfolder]: For 378767/378771 co-relation queries the response was YES. [2022-09-16 11:45:14,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48295 conditions, 4049 events. 932/4049 cut-off events. For 378767/378771 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 42898 event pairs, 103 based on Foata normal form. 3/4020 useless extension candidates. Maximal degree in co-relation 47835. Up to 1231 conditions per place. [2022-09-16 11:45:14,420 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 1125 selfloop transitions, 376 changer transitions 0/1526 dead transitions. [2022-09-16 11:45:14,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1478 places, 1526 transitions, 43841 flow [2022-09-16 11:45:14,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-09-16 11:45:14,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-09-16 11:45:14,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1323 transitions. [2022-09-16 11:45:14,422 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.42147180630774134 [2022-09-16 11:45:14,422 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 1323 transitions. [2022-09-16 11:45:14,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 1323 transitions. [2022-09-16 11:45:14,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:14,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 1323 transitions. [2022-09-16 11:45:14,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 30.767441860465116) internal successors, (1323), 43 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:14,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:14,425 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:14,425 INFO L175 Difference]: Start difference. First operand has 1436 places, 1350 transitions, 37445 flow. Second operand 43 states and 1323 transitions. [2022-09-16 11:45:14,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1478 places, 1526 transitions, 43841 flow [2022-09-16 11:45:17,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1461 places, 1526 transitions, 43495 flow, removed 91 selfloop flow, removed 17 redundant places. [2022-09-16 11:45:17,401 INFO L231 Difference]: Finished difference. Result has 1476 places, 1377 transitions, 39631 flow [2022-09-16 11:45:17,403 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=37165, PETRI_DIFFERENCE_MINUEND_PLACES=1419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=349, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=992, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=39631, PETRI_PLACES=1476, PETRI_TRANSITIONS=1377} [2022-09-16 11:45:17,403 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1400 predicate places. [2022-09-16 11:45:17,403 INFO L495 AbstractCegarLoop]: Abstraction has has 1476 places, 1377 transitions, 39631 flow [2022-09-16 11:45:17,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:17,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:17,404 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:17,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-09-16 11:45:17,404 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:45:17,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:17,404 INFO L85 PathProgramCache]: Analyzing trace with hash 416127549, now seen corresponding path program 18 times [2022-09-16 11:45:17,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:17,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8770076] [2022-09-16 11:45:17,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:17,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:17,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:17,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:17,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8770076] [2022-09-16 11:45:17,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8770076] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:17,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:17,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:45:17,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361368941] [2022-09-16 11:45:17,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:17,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:45:17,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:17,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:45:17,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:45:17,782 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:45:17,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1476 places, 1377 transitions, 39631 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:17,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:17,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:45:17,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:24,021 INFO L130 PetriNetUnfolder]: 946/4142 cut-off events. [2022-09-16 11:45:24,022 INFO L131 PetriNetUnfolder]: For 439790/439794 co-relation queries the response was YES. [2022-09-16 11:45:24,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50505 conditions, 4142 events. 946/4142 cut-off events. For 439790/439794 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 44366 event pairs, 159 based on Foata normal form. 3/4112 useless extension candidates. Maximal degree in co-relation 50029. Up to 1498 conditions per place. [2022-09-16 11:45:24,148 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 1140 selfloop transitions, 365 changer transitions 0/1530 dead transitions. [2022-09-16 11:45:24,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1518 places, 1530 transitions, 45681 flow [2022-09-16 11:45:24,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-09-16 11:45:24,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-09-16 11:45:24,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1316 transitions. [2022-09-16 11:45:24,149 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4192417967505575 [2022-09-16 11:45:24,149 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 1316 transitions. [2022-09-16 11:45:24,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 1316 transitions. [2022-09-16 11:45:24,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:24,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 1316 transitions. [2022-09-16 11:45:24,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 30.6046511627907) internal successors, (1316), 43 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:24,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:24,152 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:24,152 INFO L175 Difference]: Start difference. First operand has 1476 places, 1377 transitions, 39631 flow. Second operand 43 states and 1316 transitions. [2022-09-16 11:45:24,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1518 places, 1530 transitions, 45681 flow [2022-09-16 11:45:27,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1494 places, 1530 transitions, 45279 flow, removed 81 selfloop flow, removed 24 redundant places. [2022-09-16 11:45:27,316 INFO L231 Difference]: Finished difference. Result has 1506 places, 1408 transitions, 41494 flow [2022-09-16 11:45:27,317 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=39243, PETRI_DIFFERENCE_MINUEND_PLACES=1452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1032, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=41494, PETRI_PLACES=1506, PETRI_TRANSITIONS=1408} [2022-09-16 11:45:27,318 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1430 predicate places. [2022-09-16 11:45:27,318 INFO L495 AbstractCegarLoop]: Abstraction has has 1506 places, 1408 transitions, 41494 flow [2022-09-16 11:45:27,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:27,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:27,318 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:27,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-09-16 11:45:27,318 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:45:27,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:27,319 INFO L85 PathProgramCache]: Analyzing trace with hash 611309767, now seen corresponding path program 19 times [2022-09-16 11:45:27,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:27,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025150876] [2022-09-16 11:45:27,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:27,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:27,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:27,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:27,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025150876] [2022-09-16 11:45:27,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025150876] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:27,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:27,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:45:27,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097898562] [2022-09-16 11:45:27,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:27,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:45:27,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:27,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:45:27,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:45:27,673 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:45:27,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1506 places, 1408 transitions, 41494 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:27,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:27,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:45:27,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:35,369 INFO L130 PetriNetUnfolder]: 934/4028 cut-off events. [2022-09-16 11:45:35,369 INFO L131 PetriNetUnfolder]: For 436366/436370 co-relation queries the response was YES. [2022-09-16 11:45:35,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50590 conditions, 4028 events. 934/4028 cut-off events. For 436366/436370 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 42647 event pairs, 52 based on Foata normal form. 20/4016 useless extension candidates. Maximal degree in co-relation 50101. Up to 837 conditions per place. [2022-09-16 11:45:35,493 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 868 selfloop transitions, 712 changer transitions 0/1605 dead transitions. [2022-09-16 11:45:35,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1573 places, 1605 transitions, 48332 flow [2022-09-16 11:45:35,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-09-16 11:45:35,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2022-09-16 11:45:35,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 2049 transitions. [2022-09-16 11:45:35,495 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4127719580983078 [2022-09-16 11:45:35,495 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 2049 transitions. [2022-09-16 11:45:35,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 2049 transitions. [2022-09-16 11:45:35,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:35,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 2049 transitions. [2022-09-16 11:45:35,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 30.13235294117647) internal successors, (2049), 68 states have internal predecessors, (2049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:35,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 73.0) internal successors, (5037), 69 states have internal predecessors, (5037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:35,500 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 73.0) internal successors, (5037), 69 states have internal predecessors, (5037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:35,500 INFO L175 Difference]: Start difference. First operand has 1506 places, 1408 transitions, 41494 flow. Second operand 68 states and 2049 transitions. [2022-09-16 11:45:35,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1573 places, 1605 transitions, 48332 flow [2022-09-16 11:45:39,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1548 places, 1605 transitions, 47783 flow, removed 112 selfloop flow, removed 25 redundant places. [2022-09-16 11:45:39,165 INFO L231 Difference]: Finished difference. Result has 1560 places, 1454 transitions, 44724 flow [2022-09-16 11:45:39,167 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=41013, PETRI_DIFFERENCE_MINUEND_PLACES=1481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=666, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=735, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=44724, PETRI_PLACES=1560, PETRI_TRANSITIONS=1454} [2022-09-16 11:45:39,167 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1484 predicate places. [2022-09-16 11:45:39,167 INFO L495 AbstractCegarLoop]: Abstraction has has 1560 places, 1454 transitions, 44724 flow [2022-09-16 11:45:39,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:39,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:39,167 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:39,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-09-16 11:45:39,168 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:45:39,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:39,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1688962123, now seen corresponding path program 20 times [2022-09-16 11:45:39,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:39,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764963320] [2022-09-16 11:45:39,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:39,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:39,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:39,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764963320] [2022-09-16 11:45:39,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764963320] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:39,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:39,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:45:39,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640378152] [2022-09-16 11:45:39,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:39,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:45:39,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:39,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:45:39,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:45:39,572 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:45:39,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1560 places, 1454 transitions, 44724 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:39,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:39,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:45:39,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:44,872 INFO L130 PetriNetUnfolder]: 971/4165 cut-off events. [2022-09-16 11:45:44,873 INFO L131 PetriNetUnfolder]: For 502834/502840 co-relation queries the response was YES. [2022-09-16 11:45:45,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53841 conditions, 4165 events. 971/4165 cut-off events. For 502834/502840 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 44602 event pairs, 114 based on Foata normal form. 3/4135 useless extension candidates. Maximal degree in co-relation 53345. Up to 1634 conditions per place. [2022-09-16 11:45:45,093 INFO L137 encePairwiseOnDemand]: 48/73 looper letters, 1182 selfloop transitions, 412 changer transitions 0/1619 dead transitions. [2022-09-16 11:45:45,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1593 places, 1619 transitions, 51731 flow [2022-09-16 11:45:45,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-09-16 11:45:45,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-09-16 11:45:45,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1055 transitions. [2022-09-16 11:45:45,094 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.42506043513295727 [2022-09-16 11:45:45,094 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1055 transitions. [2022-09-16 11:45:45,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1055 transitions. [2022-09-16 11:45:45,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:45,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1055 transitions. [2022-09-16 11:45:45,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 31.029411764705884) internal successors, (1055), 34 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:45,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:45,097 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:45,097 INFO L175 Difference]: Start difference. First operand has 1560 places, 1454 transitions, 44724 flow. Second operand 34 states and 1055 transitions. [2022-09-16 11:45:45,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1593 places, 1619 transitions, 51731 flow [2022-09-16 11:45:48,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1565 places, 1619 transitions, 50829 flow, removed 130 selfloop flow, removed 28 redundant places. [2022-09-16 11:45:48,800 INFO L231 Difference]: Finished difference. Result has 1579 places, 1501 transitions, 47022 flow [2022-09-16 11:45:48,801 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=43899, PETRI_DIFFERENCE_MINUEND_PLACES=1532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=369, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1067, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=47022, PETRI_PLACES=1579, PETRI_TRANSITIONS=1501} [2022-09-16 11:45:48,802 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1503 predicate places. [2022-09-16 11:45:48,802 INFO L495 AbstractCegarLoop]: Abstraction has has 1579 places, 1501 transitions, 47022 flow [2022-09-16 11:45:48,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:48,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:48,802 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:48,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-09-16 11:45:48,802 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:45:48,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:48,802 INFO L85 PathProgramCache]: Analyzing trace with hash -130150581, now seen corresponding path program 21 times [2022-09-16 11:45:48,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:48,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093398751] [2022-09-16 11:45:48,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:48,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:49,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:49,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:49,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093398751] [2022-09-16 11:45:49,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093398751] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:49,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:49,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:45:49,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462758699] [2022-09-16 11:45:49,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:49,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:45:49,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:49,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:45:49,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:45:49,159 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:45:49,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1579 places, 1501 transitions, 47022 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:49,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:49,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:45:49,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:54,616 INFO L130 PetriNetUnfolder]: 985/4219 cut-off events. [2022-09-16 11:45:54,616 INFO L131 PetriNetUnfolder]: For 535864/535870 co-relation queries the response was YES. [2022-09-16 11:45:54,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55155 conditions, 4219 events. 985/4219 cut-off events. For 535864/535870 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 45262 event pairs, 147 based on Foata normal form. 3/4188 useless extension candidates. Maximal degree in co-relation 54644. Up to 1671 conditions per place. [2022-09-16 11:45:54,748 INFO L137 encePairwiseOnDemand]: 48/73 looper letters, 1270 selfloop transitions, 348 changer transitions 0/1643 dead transitions. [2022-09-16 11:45:54,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1612 places, 1643 transitions, 53264 flow [2022-09-16 11:45:54,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-09-16 11:45:54,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-09-16 11:45:54,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1057 transitions. [2022-09-16 11:45:54,750 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4258662369057212 [2022-09-16 11:45:54,750 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1057 transitions. [2022-09-16 11:45:54,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1057 transitions. [2022-09-16 11:45:54,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:54,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1057 transitions. [2022-09-16 11:45:54,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 31.08823529411765) internal successors, (1057), 34 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:54,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:54,754 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:54,754 INFO L175 Difference]: Start difference. First operand has 1579 places, 1501 transitions, 47022 flow. Second operand 34 states and 1057 transitions. [2022-09-16 11:45:54,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1612 places, 1643 transitions, 53264 flow [2022-09-16 11:45:58,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1603 places, 1643 transitions, 52890 flow, removed 97 selfloop flow, removed 9 redundant places. [2022-09-16 11:45:58,614 INFO L231 Difference]: Finished difference. Result has 1615 places, 1532 transitions, 48990 flow [2022-09-16 11:45:58,616 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=46654, PETRI_DIFFERENCE_MINUEND_PLACES=1570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=48990, PETRI_PLACES=1615, PETRI_TRANSITIONS=1532} [2022-09-16 11:45:58,616 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1539 predicate places. [2022-09-16 11:45:58,616 INFO L495 AbstractCegarLoop]: Abstraction has has 1615 places, 1532 transitions, 48990 flow [2022-09-16 11:45:58,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:58,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:58,617 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:58,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-09-16 11:45:58,617 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:45:58,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:58,617 INFO L85 PathProgramCache]: Analyzing trace with hash -497643553, now seen corresponding path program 22 times [2022-09-16 11:45:58,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:58,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997811074] [2022-09-16 11:45:58,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:58,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:58,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:58,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:58,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997811074] [2022-09-16 11:45:58,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997811074] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:58,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:58,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:45:58,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94640437] [2022-09-16 11:45:58,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:58,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:45:58,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:58,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:45:58,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:45:58,970 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:45:58,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1615 places, 1532 transitions, 48990 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:58,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:58,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:45:58,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:05,679 INFO L130 PetriNetUnfolder]: 1002/4307 cut-off events. [2022-09-16 11:46:05,679 INFO L131 PetriNetUnfolder]: For 578346/578352 co-relation queries the response was YES. [2022-09-16 11:46:05,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57027 conditions, 4307 events. 1002/4307 cut-off events. For 578346/578352 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 46376 event pairs, 113 based on Foata normal form. 3/4275 useless extension candidates. Maximal degree in co-relation 56502. Up to 1652 conditions per place. [2022-09-16 11:46:05,819 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 1192 selfloop transitions, 469 changer transitions 0/1686 dead transitions. [2022-09-16 11:46:05,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1657 places, 1686 transitions, 55546 flow [2022-09-16 11:46:05,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-09-16 11:46:05,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-09-16 11:46:05,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1309 transitions. [2022-09-16 11:46:05,821 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4170117871933737 [2022-09-16 11:46:05,821 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 1309 transitions. [2022-09-16 11:46:05,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 1309 transitions. [2022-09-16 11:46:05,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:05,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 1309 transitions. [2022-09-16 11:46:05,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 30.441860465116278) internal successors, (1309), 43 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:05,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:05,824 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:05,824 INFO L175 Difference]: Start difference. First operand has 1615 places, 1532 transitions, 48990 flow. Second operand 43 states and 1309 transitions. [2022-09-16 11:46:05,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1657 places, 1686 transitions, 55546 flow [2022-09-16 11:46:09,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1645 places, 1686 transitions, 54998 flow, removed 108 selfloop flow, removed 12 redundant places. [2022-09-16 11:46:09,841 INFO L231 Difference]: Finished difference. Result has 1661 places, 1573 transitions, 51314 flow [2022-09-16 11:46:09,843 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=48442, PETRI_DIFFERENCE_MINUEND_PLACES=1603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=430, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1086, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=51314, PETRI_PLACES=1661, PETRI_TRANSITIONS=1573} [2022-09-16 11:46:09,844 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1585 predicate places. [2022-09-16 11:46:09,844 INFO L495 AbstractCegarLoop]: Abstraction has has 1661 places, 1573 transitions, 51314 flow [2022-09-16 11:46:09,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:09,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:09,844 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:09,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-09-16 11:46:09,844 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:46:09,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:09,845 INFO L85 PathProgramCache]: Analyzing trace with hash -338337825, now seen corresponding path program 23 times [2022-09-16 11:46:09,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:09,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119836102] [2022-09-16 11:46:09,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:09,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:10,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:46:10,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:10,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119836102] [2022-09-16 11:46:10,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119836102] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:10,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:10,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:46:10,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674319329] [2022-09-16 11:46:10,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:10,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:46:10,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:10,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:46:10,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:46:10,316 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:46:10,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1661 places, 1573 transitions, 51314 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:10,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:10,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:46:10,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:16,893 INFO L130 PetriNetUnfolder]: 1016/4354 cut-off events. [2022-09-16 11:46:16,894 INFO L131 PetriNetUnfolder]: For 622696/622702 co-relation queries the response was YES. [2022-09-16 11:46:17,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58931 conditions, 4354 events. 1016/4354 cut-off events. For 622696/622702 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 47054 event pairs, 155 based on Foata normal form. 3/4321 useless extension candidates. Maximal degree in co-relation 58390. Up to 1701 conditions per place. [2022-09-16 11:46:17,041 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 1300 selfloop transitions, 399 changer transitions 0/1724 dead transitions. [2022-09-16 11:46:17,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1703 places, 1724 transitions, 58122 flow [2022-09-16 11:46:17,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-09-16 11:46:17,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-09-16 11:46:17,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1314 transitions. [2022-09-16 11:46:17,044 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2022-09-16 11:46:17,044 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 1314 transitions. [2022-09-16 11:46:17,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 1314 transitions. [2022-09-16 11:46:17,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:17,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 1314 transitions. [2022-09-16 11:46:17,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 30.558139534883722) internal successors, (1314), 43 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:17,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:17,048 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:17,048 INFO L175 Difference]: Start difference. First operand has 1661 places, 1573 transitions, 51314 flow. Second operand 43 states and 1314 transitions. [2022-09-16 11:46:17,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1703 places, 1724 transitions, 58122 flow [2022-09-16 11:46:21,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1688 places, 1724 transitions, 57601 flow, removed 84 selfloop flow, removed 15 redundant places. [2022-09-16 11:46:21,522 INFO L231 Difference]: Finished difference. Result has 1704 places, 1613 transitions, 53692 flow [2022-09-16 11:46:21,524 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=50802, PETRI_DIFFERENCE_MINUEND_PLACES=1646, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=53692, PETRI_PLACES=1704, PETRI_TRANSITIONS=1613} [2022-09-16 11:46:21,524 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1628 predicate places. [2022-09-16 11:46:21,524 INFO L495 AbstractCegarLoop]: Abstraction has has 1704 places, 1613 transitions, 53692 flow [2022-09-16 11:46:21,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:21,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:21,525 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:21,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-09-16 11:46:21,525 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:46:21,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:21,525 INFO L85 PathProgramCache]: Analyzing trace with hash -60785235, now seen corresponding path program 24 times [2022-09-16 11:46:21,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:21,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272220168] [2022-09-16 11:46:21,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:21,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:21,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:46:21,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:21,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272220168] [2022-09-16 11:46:21,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272220168] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:21,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:21,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:46:21,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460313102] [2022-09-16 11:46:21,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:21,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:46:21,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:21,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:46:21,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:46:21,895 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:46:21,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1704 places, 1613 transitions, 53692 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:21,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:21,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:46:21,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:28,737 INFO L130 PetriNetUnfolder]: 1034/4442 cut-off events. [2022-09-16 11:46:28,737 INFO L131 PetriNetUnfolder]: For 673657/673663 co-relation queries the response was YES. [2022-09-16 11:46:28,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61058 conditions, 4442 events. 1034/4442 cut-off events. For 673657/673663 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 48282 event pairs, 112 based on Foata normal form. 3/4409 useless extension candidates. Maximal degree in co-relation 60503. Up to 1662 conditions per place. [2022-09-16 11:46:28,893 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 1219 selfloop transitions, 505 changer transitions 0/1749 dead transitions. [2022-09-16 11:46:28,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1746 places, 1749 transitions, 60311 flow [2022-09-16 11:46:28,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-09-16 11:46:28,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-09-16 11:46:28,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1312 transitions. [2022-09-16 11:46:28,894 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4179675055750239 [2022-09-16 11:46:28,894 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 1312 transitions. [2022-09-16 11:46:28,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 1312 transitions. [2022-09-16 11:46:28,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:28,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 1312 transitions. [2022-09-16 11:46:28,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 30.511627906976745) internal successors, (1312), 43 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:28,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:28,897 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:28,897 INFO L175 Difference]: Start difference. First operand has 1704 places, 1613 transitions, 53692 flow. Second operand 43 states and 1312 transitions. [2022-09-16 11:46:28,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1746 places, 1749 transitions, 60311 flow [2022-09-16 11:46:33,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1733 places, 1749 transitions, 59943 flow, removed 88 selfloop flow, removed 13 redundant places. [2022-09-16 11:46:33,649 INFO L231 Difference]: Finished difference. Result has 1745 places, 1634 transitions, 56088 flow [2022-09-16 11:46:33,651 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=53342, PETRI_DIFFERENCE_MINUEND_PLACES=1691, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=484, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=56088, PETRI_PLACES=1745, PETRI_TRANSITIONS=1634} [2022-09-16 11:46:33,652 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1669 predicate places. [2022-09-16 11:46:33,652 INFO L495 AbstractCegarLoop]: Abstraction has has 1745 places, 1634 transitions, 56088 flow [2022-09-16 11:46:33,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:33,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:33,652 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:33,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-09-16 11:46:33,652 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:46:33,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:33,653 INFO L85 PathProgramCache]: Analyzing trace with hash 347060875, now seen corresponding path program 25 times [2022-09-16 11:46:33,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:33,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084431699] [2022-09-16 11:46:33,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:33,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:34,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:46:34,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:34,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084431699] [2022-09-16 11:46:34,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084431699] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:34,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:34,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:46:34,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967294311] [2022-09-16 11:46:34,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:34,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:46:34,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:34,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:46:34,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:46:34,039 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:46:34,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1745 places, 1634 transitions, 56088 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:34,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:34,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:46:34,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:42,994 INFO L130 PetriNetUnfolder]: 1028/4366 cut-off events. [2022-09-16 11:46:42,994 INFO L131 PetriNetUnfolder]: For 675112/675118 co-relation queries the response was YES. [2022-09-16 11:46:43,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61666 conditions, 4366 events. 1028/4366 cut-off events. For 675112/675118 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 46874 event pairs, 35 based on Foata normal form. 11/4341 useless extension candidates. Maximal degree in co-relation 61101. Up to 1011 conditions per place. [2022-09-16 11:46:43,144 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 1018 selfloop transitions, 775 changer transitions 0/1818 dead transitions. [2022-09-16 11:46:43,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1813 places, 1818 transitions, 63544 flow [2022-09-16 11:46:43,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-09-16 11:46:43,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2022-09-16 11:46:43,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 2061 transitions. [2022-09-16 11:46:43,146 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4091721262656343 [2022-09-16 11:46:43,146 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 2061 transitions. [2022-09-16 11:46:43,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 2061 transitions. [2022-09-16 11:46:43,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:43,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 2061 transitions. [2022-09-16 11:46:43,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 29.869565217391305) internal successors, (2061), 69 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:43,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 73.0) internal successors, (5110), 70 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:43,151 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 73.0) internal successors, (5110), 70 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:43,151 INFO L175 Difference]: Start difference. First operand has 1745 places, 1634 transitions, 56088 flow. Second operand 69 states and 2061 transitions. [2022-09-16 11:46:43,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1813 places, 1818 transitions, 63544 flow [2022-09-16 11:46:48,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1785 places, 1818 transitions, 62877 flow, removed 107 selfloop flow, removed 28 redundant places. [2022-09-16 11:46:49,066 INFO L231 Difference]: Finished difference. Result has 1797 places, 1672 transitions, 59540 flow [2022-09-16 11:46:49,068 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=55489, PETRI_DIFFERENCE_MINUEND_PLACES=1717, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=737, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=890, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=59540, PETRI_PLACES=1797, PETRI_TRANSITIONS=1672} [2022-09-16 11:46:49,068 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1721 predicate places. [2022-09-16 11:46:49,068 INFO L495 AbstractCegarLoop]: Abstraction has has 1797 places, 1672 transitions, 59540 flow [2022-09-16 11:46:49,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:49,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:49,068 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:49,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-09-16 11:46:49,068 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:46:49,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:49,069 INFO L85 PathProgramCache]: Analyzing trace with hash -890721717, now seen corresponding path program 26 times [2022-09-16 11:46:49,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:49,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537953797] [2022-09-16 11:46:49,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:49,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:49,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:46:49,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:49,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537953797] [2022-09-16 11:46:49,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537953797] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:49,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:49,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:46:49,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132286709] [2022-09-16 11:46:49,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:49,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:46:49,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:49,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:46:49,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:46:49,414 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:46:49,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1797 places, 1672 transitions, 59540 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:49,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:49,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:46:49,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:55,612 INFO L130 PetriNetUnfolder]: 1057/4485 cut-off events. [2022-09-16 11:46:55,612 INFO L131 PetriNetUnfolder]: For 762314/762322 co-relation queries the response was YES. [2022-09-16 11:46:55,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64948 conditions, 4485 events. 1057/4485 cut-off events. For 762314/762322 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 48615 event pairs, 120 based on Foata normal form. 3/4451 useless extension candidates. Maximal degree in co-relation 64373. Up to 1693 conditions per place. [2022-09-16 11:46:55,877 INFO L137 encePairwiseOnDemand]: 48/73 looper letters, 1236 selfloop transitions, 552 changer transitions 0/1813 dead transitions. [2022-09-16 11:46:55,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1832 places, 1813 transitions, 66717 flow [2022-09-16 11:46:55,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-09-16 11:46:55,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-09-16 11:46:55,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1107 transitions. [2022-09-16 11:46:55,879 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4212328767123288 [2022-09-16 11:46:55,879 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1107 transitions. [2022-09-16 11:46:55,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1107 transitions. [2022-09-16 11:46:55,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:55,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1107 transitions. [2022-09-16 11:46:55,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 30.75) internal successors, (1107), 36 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:55,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 73.0) internal successors, (2701), 37 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:55,881 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 73.0) internal successors, (2701), 37 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:55,881 INFO L175 Difference]: Start difference. First operand has 1797 places, 1672 transitions, 59540 flow. Second operand 36 states and 1107 transitions. [2022-09-16 11:46:55,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1832 places, 1813 transitions, 66717 flow [2022-09-16 11:47:01,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1798 places, 1813 transitions, 65699 flow, removed 112 selfloop flow, removed 34 redundant places. [2022-09-16 11:47:02,016 INFO L231 Difference]: Finished difference. Result has 1813 places, 1706 transitions, 62058 flow [2022-09-16 11:47:02,017 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=58574, PETRI_DIFFERENCE_MINUEND_PLACES=1763, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=519, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=62058, PETRI_PLACES=1813, PETRI_TRANSITIONS=1706} [2022-09-16 11:47:02,018 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1737 predicate places. [2022-09-16 11:47:02,018 INFO L495 AbstractCegarLoop]: Abstraction has has 1813 places, 1706 transitions, 62058 flow [2022-09-16 11:47:02,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:02,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:02,018 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:02,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-09-16 11:47:02,018 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:47:02,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:02,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1903158023, now seen corresponding path program 27 times [2022-09-16 11:47:02,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:02,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909151758] [2022-09-16 11:47:02,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:02,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:02,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:47:02,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:02,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909151758] [2022-09-16 11:47:02,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909151758] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:02,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:02,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:47:02,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23111339] [2022-09-16 11:47:02,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:02,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:47:02,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:02,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:47:02,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:47:02,366 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:47:02,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1813 places, 1706 transitions, 62058 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:02,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:02,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:47:02,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:09,471 INFO L130 PetriNetUnfolder]: 1066/4485 cut-off events. [2022-09-16 11:47:09,471 INFO L131 PetriNetUnfolder]: For 776784/776796 co-relation queries the response was YES. [2022-09-16 11:47:09,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66455 conditions, 4485 events. 1066/4485 cut-off events. For 776784/776796 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 48278 event pairs, 82 based on Foata normal form. 3/4452 useless extension candidates. Maximal degree in co-relation 65868. Up to 1162 conditions per place. [2022-09-16 11:47:09,657 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 1108 selfloop transitions, 736 changer transitions 0/1869 dead transitions. [2022-09-16 11:47:09,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1853 places, 1869 transitions, 69430 flow [2022-09-16 11:47:09,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-09-16 11:47:09,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-09-16 11:47:09,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 1247 transitions. [2022-09-16 11:47:09,658 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4166388239224858 [2022-09-16 11:47:09,658 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 1247 transitions. [2022-09-16 11:47:09,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 1247 transitions. [2022-09-16 11:47:09,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:09,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 1247 transitions. [2022-09-16 11:47:09,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 30.414634146341463) internal successors, (1247), 41 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:09,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 73.0) internal successors, (3066), 42 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:09,661 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 73.0) internal successors, (3066), 42 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:09,661 INFO L175 Difference]: Start difference. First operand has 1813 places, 1706 transitions, 62058 flow. Second operand 41 states and 1247 transitions. [2022-09-16 11:47:09,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1853 places, 1869 transitions, 69430 flow [2022-09-16 11:47:16,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1838 places, 1869 transitions, 68542 flow, removed 182 selfloop flow, removed 15 redundant places. [2022-09-16 11:47:16,560 INFO L231 Difference]: Finished difference. Result has 1854 places, 1738 transitions, 65147 flow [2022-09-16 11:47:16,562 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=61251, PETRI_DIFFERENCE_MINUEND_PLACES=1798, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=705, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=991, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=65147, PETRI_PLACES=1854, PETRI_TRANSITIONS=1738} [2022-09-16 11:47:16,562 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1778 predicate places. [2022-09-16 11:47:16,562 INFO L495 AbstractCegarLoop]: Abstraction has has 1854 places, 1738 transitions, 65147 flow [2022-09-16 11:47:16,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:16,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:16,562 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:16,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-09-16 11:47:16,563 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:47:16,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:16,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1431203071, now seen corresponding path program 28 times [2022-09-16 11:47:16,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:16,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311098326] [2022-09-16 11:47:16,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:16,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:16,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:47:16,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:16,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311098326] [2022-09-16 11:47:16,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311098326] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:16,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:16,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:47:16,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731281017] [2022-09-16 11:47:16,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:16,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:47:16,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:16,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:47:16,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:47:16,937 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:47:16,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1854 places, 1738 transitions, 65147 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:16,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:16,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:47:16,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:24,423 INFO L130 PetriNetUnfolder]: 1080/4620 cut-off events. [2022-09-16 11:47:24,423 INFO L131 PetriNetUnfolder]: For 873459/873469 co-relation queries the response was YES. [2022-09-16 11:47:24,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69232 conditions, 4620 events. 1080/4620 cut-off events. For 873459/873469 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 50481 event pairs, 121 based on Foata normal form. 3/4586 useless extension candidates. Maximal degree in co-relation 68632. Up to 1707 conditions per place. [2022-09-16 11:47:24,590 INFO L137 encePairwiseOnDemand]: 48/73 looper letters, 1258 selfloop transitions, 592 changer transitions 0/1875 dead transitions. [2022-09-16 11:47:24,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1893 places, 1875 transitions, 72121 flow [2022-09-16 11:47:24,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-09-16 11:47:24,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-09-16 11:47:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1223 transitions. [2022-09-16 11:47:24,592 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.41883561643835615 [2022-09-16 11:47:24,592 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 1223 transitions. [2022-09-16 11:47:24,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 1223 transitions. [2022-09-16 11:47:24,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:24,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 1223 transitions. [2022-09-16 11:47:24,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 30.575) internal successors, (1223), 40 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:24,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 73.0) internal successors, (2993), 41 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:24,595 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 73.0) internal successors, (2993), 41 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:24,595 INFO L175 Difference]: Start difference. First operand has 1854 places, 1738 transitions, 65147 flow. Second operand 40 states and 1223 transitions. [2022-09-16 11:47:24,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1893 places, 1875 transitions, 72121 flow [2022-09-16 11:47:31,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1874 places, 1875 transitions, 71026 flow, removed 152 selfloop flow, removed 19 redundant places. [2022-09-16 11:47:31,090 INFO L231 Difference]: Finished difference. Result has 1886 places, 1767 transitions, 67239 flow [2022-09-16 11:47:31,092 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=64070, PETRI_DIFFERENCE_MINUEND_PLACES=1835, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=564, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=67239, PETRI_PLACES=1886, PETRI_TRANSITIONS=1767} [2022-09-16 11:47:31,092 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1810 predicate places. [2022-09-16 11:47:31,092 INFO L495 AbstractCegarLoop]: Abstraction has has 1886 places, 1767 transitions, 67239 flow [2022-09-16 11:47:31,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:31,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:31,093 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:31,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-09-16 11:47:31,093 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:47:31,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:31,093 INFO L85 PathProgramCache]: Analyzing trace with hash -75016597, now seen corresponding path program 29 times [2022-09-16 11:47:31,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:31,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882681103] [2022-09-16 11:47:31,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:31,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:31,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:47:31,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:31,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882681103] [2022-09-16 11:47:31,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882681103] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:31,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:31,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:47:31,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100934371] [2022-09-16 11:47:31,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:31,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:47:31,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:31,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:47:31,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:47:31,512 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:47:31,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1886 places, 1767 transitions, 67239 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:31,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:31,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:47:31,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:39,042 INFO L130 PetriNetUnfolder]: 1094/4650 cut-off events. [2022-09-16 11:47:39,042 INFO L131 PetriNetUnfolder]: For 926960/926968 co-relation queries the response was YES. [2022-09-16 11:47:39,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71107 conditions, 4650 events. 1094/4650 cut-off events. For 926960/926968 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 50918 event pairs, 135 based on Foata normal form. 3/4613 useless extension candidates. Maximal degree in co-relation 70498. Up to 1601 conditions per place. [2022-09-16 11:47:39,213 INFO L137 encePairwiseOnDemand]: 48/73 looper letters, 1172 selfloop transitions, 695 changer transitions 0/1892 dead transitions. [2022-09-16 11:47:39,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1923 places, 1892 transitions, 74158 flow [2022-09-16 11:47:39,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-09-16 11:47:39,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-09-16 11:47:39,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1160 transitions. [2022-09-16 11:47:39,215 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.41816870944484497 [2022-09-16 11:47:39,215 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1160 transitions. [2022-09-16 11:47:39,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1160 transitions. [2022-09-16 11:47:39,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:39,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1160 transitions. [2022-09-16 11:47:39,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 30.526315789473685) internal successors, (1160), 38 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:39,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 73.0) internal successors, (2847), 39 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:39,217 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 73.0) internal successors, (2847), 39 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:39,217 INFO L175 Difference]: Start difference. First operand has 1886 places, 1767 transitions, 67239 flow. Second operand 38 states and 1160 transitions. [2022-09-16 11:47:39,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1923 places, 1892 transitions, 74158 flow [2022-09-16 11:47:46,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1900 places, 1892 transitions, 73140 flow, removed 112 selfloop flow, removed 23 redundant places. [2022-09-16 11:47:46,170 INFO L231 Difference]: Finished difference. Result has 1912 places, 1790 transitions, 69552 flow [2022-09-16 11:47:46,172 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=66237, PETRI_DIFFERENCE_MINUEND_PLACES=1863, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1767, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=672, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1084, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=69552, PETRI_PLACES=1912, PETRI_TRANSITIONS=1790} [2022-09-16 11:47:46,172 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1836 predicate places. [2022-09-16 11:47:46,172 INFO L495 AbstractCegarLoop]: Abstraction has has 1912 places, 1790 transitions, 69552 flow [2022-09-16 11:47:46,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:46,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:46,173 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:46,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-09-16 11:47:46,173 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:47:46,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:46,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1964910219, now seen corresponding path program 30 times [2022-09-16 11:47:46,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:46,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065043574] [2022-09-16 11:47:46,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:46,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:47:46,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:46,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065043574] [2022-09-16 11:47:46,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065043574] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:46,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:46,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:47:46,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414977725] [2022-09-16 11:47:46,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:46,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:47:46,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:46,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:47:46,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:47:46,503 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:47:46,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1912 places, 1790 transitions, 69552 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:46,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:46,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:47:46,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:58,575 INFO L130 PetriNetUnfolder]: 1112/4713 cut-off events. [2022-09-16 11:47:58,576 INFO L131 PetriNetUnfolder]: For 992917/992929 co-relation queries the response was YES. [2022-09-16 11:47:58,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73415 conditions, 4713 events. 1112/4713 cut-off events. For 992917/992929 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 51779 event pairs, 47 based on Foata normal form. 5/4683 useless extension candidates. Maximal degree in co-relation 72798. Up to 1321 conditions per place. [2022-09-16 11:47:58,848 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 975 selfloop transitions, 939 changer transitions 0/1939 dead transitions. [2022-09-16 11:47:58,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1980 places, 1939 transitions, 76900 flow [2022-09-16 11:47:58,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-09-16 11:47:58,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2022-09-16 11:47:58,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 2041 transitions. [2022-09-16 11:47:58,850 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4052015088346238 [2022-09-16 11:47:58,850 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 2041 transitions. [2022-09-16 11:47:58,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 2041 transitions. [2022-09-16 11:47:58,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:58,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 2041 transitions. [2022-09-16 11:47:58,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 29.579710144927535) internal successors, (2041), 69 states have internal predecessors, (2041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:58,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 73.0) internal successors, (5110), 70 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:58,856 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 73.0) internal successors, (5110), 70 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:58,857 INFO L175 Difference]: Start difference. First operand has 1912 places, 1790 transitions, 69552 flow. Second operand 69 states and 2041 transitions. [2022-09-16 11:47:58,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1980 places, 1939 transitions, 76900 flow [2022-09-16 11:48:06,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1958 places, 1939 transitions, 75951 flow, removed 107 selfloop flow, removed 22 redundant places. [2022-09-16 11:48:06,278 INFO L231 Difference]: Finished difference. Result has 1970 places, 1811 transitions, 72676 flow [2022-09-16 11:48:06,280 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=68621, PETRI_DIFFERENCE_MINUEND_PLACES=1890, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=918, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=861, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=72676, PETRI_PLACES=1970, PETRI_TRANSITIONS=1811} [2022-09-16 11:48:06,280 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1894 predicate places. [2022-09-16 11:48:06,280 INFO L495 AbstractCegarLoop]: Abstraction has has 1970 places, 1811 transitions, 72676 flow [2022-09-16 11:48:06,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:06,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:06,281 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:06,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-09-16 11:48:06,281 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:48:06,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:06,281 INFO L85 PathProgramCache]: Analyzing trace with hash 37836649, now seen corresponding path program 31 times [2022-09-16 11:48:06,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:06,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094270797] [2022-09-16 11:48:06,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:06,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:48:06,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:06,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094270797] [2022-09-16 11:48:06,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094270797] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:06,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:06,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:48:06,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178856707] [2022-09-16 11:48:06,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:06,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:48:06,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:06,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:48:06,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:48:06,612 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:48:06,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1970 places, 1811 transitions, 72676 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:06,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:06,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:48:06,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:20,672 INFO L130 PetriNetUnfolder]: 1136/4724 cut-off events. [2022-09-16 11:48:20,673 INFO L131 PetriNetUnfolder]: For 1012715/1012725 co-relation queries the response was YES. [2022-09-16 11:48:20,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76392 conditions, 4724 events. 1136/4724 cut-off events. For 1012715/1012725 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 51511 event pairs, 2 based on Foata normal form. 13/4700 useless extension candidates. Maximal degree in co-relation 75766. Up to 498 conditions per place. [2022-09-16 11:48:20,995 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 651 selfloop transitions, 1342 changer transitions 0/2018 dead transitions. [2022-09-16 11:48:20,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2072 places, 2018 transitions, 81312 flow [2022-09-16 11:48:20,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-09-16 11:48:20,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2022-09-16 11:48:20,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 2990 transitions. [2022-09-16 11:48:20,998 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.3976592631998936 [2022-09-16 11:48:20,998 INFO L72 ComplementDD]: Start complementDD. Operand 103 states and 2990 transitions. [2022-09-16 11:48:20,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 2990 transitions. [2022-09-16 11:48:20,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:20,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 103 states and 2990 transitions. [2022-09-16 11:48:21,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 104 states, 103 states have (on average 29.02912621359223) internal successors, (2990), 103 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:21,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 104 states, 104 states have (on average 73.0) internal successors, (7592), 104 states have internal predecessors, (7592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:21,008 INFO L81 ComplementDD]: Finished complementDD. Result has 104 states, 104 states have (on average 73.0) internal successors, (7592), 104 states have internal predecessors, (7592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:21,008 INFO L175 Difference]: Start difference. First operand has 1970 places, 1811 transitions, 72676 flow. Second operand 103 states and 2990 transitions. [2022-09-16 11:48:21,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2072 places, 2018 transitions, 81312 flow [2022-09-16 11:48:29,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2008 places, 2018 transitions, 79610 flow, removed 157 selfloop flow, removed 64 redundant places. [2022-09-16 11:48:29,338 INFO L231 Difference]: Finished difference. Result has 2030 places, 1866 transitions, 76897 flow [2022-09-16 11:48:29,339 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=71083, PETRI_DIFFERENCE_MINUEND_PLACES=1906, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1811, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=103, PETRI_FLOW=76897, PETRI_PLACES=2030, PETRI_TRANSITIONS=1866} [2022-09-16 11:48:29,340 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1954 predicate places. [2022-09-16 11:48:29,340 INFO L495 AbstractCegarLoop]: Abstraction has has 2030 places, 1866 transitions, 76897 flow [2022-09-16 11:48:29,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:29,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:29,340 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:29,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-09-16 11:48:29,340 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:48:29,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:29,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1515298805, now seen corresponding path program 32 times [2022-09-16 11:48:29,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:29,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152540134] [2022-09-16 11:48:29,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:29,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:48:29,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:29,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152540134] [2022-09-16 11:48:29,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152540134] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:29,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:29,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-16 11:48:29,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303167928] [2022-09-16 11:48:29,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:29,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:48:29,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:29,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:48:29,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:48:29,661 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-09-16 11:48:29,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2030 places, 1866 transitions, 76897 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:29,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:29,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-09-16 11:48:29,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:43,125 INFO L130 PetriNetUnfolder]: 1134/4775 cut-off events. [2022-09-16 11:48:43,125 INFO L131 PetriNetUnfolder]: For 1066754/1066768 co-relation queries the response was YES. [2022-09-16 11:48:43,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77756 conditions, 4775 events. 1134/4775 cut-off events. For 1066754/1066768 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 52494 event pairs, 46 based on Foata normal form. 17/4754 useless extension candidates. Maximal degree in co-relation 77112. Up to 475 conditions per place. [2022-09-16 11:48:43,326 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 681 selfloop transitions, 1278 changer transitions 0/1984 dead transitions. [2022-09-16 11:48:43,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2117 places, 1984 transitions, 83156 flow [2022-09-16 11:48:43,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-09-16 11:48:43,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-09-16 11:48:43,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 2597 transitions. [2022-09-16 11:48:43,329 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.39528158295281585 [2022-09-16 11:48:43,329 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 2597 transitions. [2022-09-16 11:48:43,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 2597 transitions. [2022-09-16 11:48:43,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:43,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 2597 transitions. [2022-09-16 11:48:43,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 28.855555555555554) internal successors, (2597), 90 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:43,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 73.0) internal successors, (6643), 91 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:43,449 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 73.0) internal successors, (6643), 91 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:43,449 INFO L175 Difference]: Start difference. First operand has 2030 places, 1866 transitions, 76897 flow. Second operand 90 states and 2597 transitions. [2022-09-16 11:48:43,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2117 places, 1984 transitions, 83156 flow [2022-09-16 11:48:51,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2018 places, 1984 transitions, 79370 flow, removed 186 selfloop flow, removed 99 redundant places. [2022-09-16 11:48:51,898 INFO L231 Difference]: Finished difference. Result has 2018 places, 1872 transitions, 76360 flow [2022-09-16 11:48:51,900 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=72936, PETRI_DIFFERENCE_MINUEND_PLACES=1929, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1863, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=76360, PETRI_PLACES=2018, PETRI_TRANSITIONS=1872} [2022-09-16 11:48:51,900 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1942 predicate places. [2022-09-16 11:48:51,900 INFO L495 AbstractCegarLoop]: Abstraction has has 2018 places, 1872 transitions, 76360 flow [2022-09-16 11:48:51,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:51,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:51,901 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:51,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-09-16 11:48:51,901 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:48:51,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:51,901 INFO L85 PathProgramCache]: Analyzing trace with hash -181215014, now seen corresponding path program 1 times [2022-09-16 11:48:51,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:51,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840189403] [2022-09-16 11:48:51,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:51,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:48:52,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:52,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840189403] [2022-09-16 11:48:52,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840189403] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:52,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:52,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:48:52,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120511900] [2022-09-16 11:48:52,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:52,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:48:52,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:52,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:48:52,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:48:52,152 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:48:52,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2018 places, 1872 transitions, 76360 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:52,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:52,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:48:52,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:49:00,219 INFO L130 PetriNetUnfolder]: 1015/4492 cut-off events. [2022-09-16 11:49:00,219 INFO L131 PetriNetUnfolder]: For 879280/879372 co-relation queries the response was YES. [2022-09-16 11:49:00,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70176 conditions, 4492 events. 1015/4492 cut-off events. For 879280/879372 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 49214 event pairs, 136 based on Foata normal form. 7/4498 useless extension candidates. Maximal degree in co-relation 69560. Up to 1422 conditions per place. [2022-09-16 11:49:00,394 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 1418 selfloop transitions, 123 changer transitions 38/1934 dead transitions. [2022-09-16 11:49:00,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2032 places, 1934 transitions, 80625 flow [2022-09-16 11:49:00,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:49:00,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:49:00,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 670 transitions. [2022-09-16 11:49:00,396 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6118721461187214 [2022-09-16 11:49:00,396 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 670 transitions. [2022-09-16 11:49:00,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 670 transitions. [2022-09-16 11:49:00,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:49:00,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 670 transitions. [2022-09-16 11:49:00,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 44.666666666666664) internal successors, (670), 15 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:00,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:00,397 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:00,397 INFO L175 Difference]: Start difference. First operand has 2018 places, 1872 transitions, 76360 flow. Second operand 15 states and 670 transitions. [2022-09-16 11:49:00,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2032 places, 1934 transitions, 80625 flow [2022-09-16 11:49:07,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1928 places, 1934 transitions, 76589 flow, removed 91 selfloop flow, removed 104 redundant places. [2022-09-16 11:49:07,804 INFO L231 Difference]: Finished difference. Result has 1934 places, 1850 transitions, 72022 flow [2022-09-16 11:49:07,805 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=72278, PETRI_DIFFERENCE_MINUEND_PLACES=1914, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1870, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1747, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=72022, PETRI_PLACES=1934, PETRI_TRANSITIONS=1850} [2022-09-16 11:49:07,806 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1858 predicate places. [2022-09-16 11:49:07,806 INFO L495 AbstractCegarLoop]: Abstraction has has 1934 places, 1850 transitions, 72022 flow [2022-09-16 11:49:07,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:07,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:49:07,807 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:49:07,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-09-16 11:49:07,807 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:49:07,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:49:07,807 INFO L85 PathProgramCache]: Analyzing trace with hash -875657676, now seen corresponding path program 2 times [2022-09-16 11:49:07,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:49:07,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283319876] [2022-09-16 11:49:07,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:49:07,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:49:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:49:08,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:49:08,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:49:08,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283319876] [2022-09-16 11:49:08,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283319876] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:49:08,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:49:08,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:49:08,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448248073] [2022-09-16 11:49:08,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:49:08,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:49:08,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:49:08,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:49:08,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:49:08,051 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:49:08,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1934 places, 1850 transitions, 72022 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:08,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:49:08,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:49:08,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:49:14,532 INFO L130 PetriNetUnfolder]: 1012/4461 cut-off events. [2022-09-16 11:49:14,533 INFO L131 PetriNetUnfolder]: For 835620/835712 co-relation queries the response was YES. [2022-09-16 11:49:14,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66348 conditions, 4461 events. 1012/4461 cut-off events. For 835620/835712 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 48697 event pairs, 144 based on Foata normal form. 5/4465 useless extension candidates. Maximal degree in co-relation 65835. Up to 1422 conditions per place. [2022-09-16 11:49:14,696 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 1417 selfloop transitions, 116 changer transitions 25/1911 dead transitions. [2022-09-16 11:49:14,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1928 places, 1911 transitions, 76194 flow [2022-09-16 11:49:14,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:49:14,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:49:14,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 666 transitions. [2022-09-16 11:49:14,697 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6082191780821918 [2022-09-16 11:49:14,697 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 666 transitions. [2022-09-16 11:49:14,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 666 transitions. [2022-09-16 11:49:14,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:49:14,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 666 transitions. [2022-09-16 11:49:14,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 44.4) internal successors, (666), 15 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:14,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:14,698 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:14,698 INFO L175 Difference]: Start difference. First operand has 1934 places, 1850 transitions, 72022 flow. Second operand 15 states and 666 transitions. [2022-09-16 11:49:14,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1928 places, 1911 transitions, 76194 flow [2022-09-16 11:49:21,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1900 places, 1911 transitions, 75173 flow, removed 25 selfloop flow, removed 28 redundant places. [2022-09-16 11:49:21,335 INFO L231 Difference]: Finished difference. Result has 1907 places, 1840 transitions, 70964 flow [2022-09-16 11:49:21,336 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=70941, PETRI_DIFFERENCE_MINUEND_PLACES=1886, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1848, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1732, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=70964, PETRI_PLACES=1907, PETRI_TRANSITIONS=1840} [2022-09-16 11:49:21,337 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1831 predicate places. [2022-09-16 11:49:21,337 INFO L495 AbstractCegarLoop]: Abstraction has has 1907 places, 1840 transitions, 70964 flow [2022-09-16 11:49:21,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:21,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:49:21,337 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:49:21,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-09-16 11:49:21,337 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:49:21,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:49:21,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1796725730, now seen corresponding path program 3 times [2022-09-16 11:49:21,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:49:21,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527425932] [2022-09-16 11:49:21,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:49:21,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:49:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:49:21,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:49:21,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:49:21,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527425932] [2022-09-16 11:49:21,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527425932] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:49:21,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:49:21,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:49:21,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123205897] [2022-09-16 11:49:21,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:49:21,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:49:21,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:49:21,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:49:21,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:49:21,594 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:49:21,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1907 places, 1840 transitions, 70964 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:21,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:49:21,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:49:21,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:49:27,832 INFO L130 PetriNetUnfolder]: 1008/4383 cut-off events. [2022-09-16 11:49:27,833 INFO L131 PetriNetUnfolder]: For 808967/809059 co-relation queries the response was YES. [2022-09-16 11:49:27,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65102 conditions, 4383 events. 1008/4383 cut-off events. For 808967/809059 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 47587 event pairs, 143 based on Foata normal form. 4/4386 useless extension candidates. Maximal degree in co-relation 64597. Up to 1422 conditions per place. [2022-09-16 11:49:27,995 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 1401 selfloop transitions, 99 changer transitions 44/1893 dead transitions. [2022-09-16 11:49:27,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1906 places, 1893 transitions, 74812 flow [2022-09-16 11:49:27,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-16 11:49:27,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-16 11:49:27,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 701 transitions. [2022-09-16 11:49:27,996 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6001712328767124 [2022-09-16 11:49:27,996 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 701 transitions. [2022-09-16 11:49:27,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 701 transitions. [2022-09-16 11:49:27,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:49:27,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 701 transitions. [2022-09-16 11:49:27,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 43.8125) internal successors, (701), 16 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:27,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:27,998 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:27,998 INFO L175 Difference]: Start difference. First operand has 1907 places, 1840 transitions, 70964 flow. Second operand 16 states and 701 transitions. [2022-09-16 11:49:27,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1906 places, 1893 transitions, 74812 flow [2022-09-16 11:49:34,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1889 places, 1893 transitions, 74103 flow, removed 11 selfloop flow, removed 17 redundant places. [2022-09-16 11:49:34,883 INFO L231 Difference]: Finished difference. Result has 1894 places, 1805 transitions, 69397 flow [2022-09-16 11:49:34,885 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=70219, PETRI_DIFFERENCE_MINUEND_PLACES=1874, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1839, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1740, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=69397, PETRI_PLACES=1894, PETRI_TRANSITIONS=1805} [2022-09-16 11:49:34,885 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1818 predicate places. [2022-09-16 11:49:34,885 INFO L495 AbstractCegarLoop]: Abstraction has has 1894 places, 1805 transitions, 69397 flow [2022-09-16 11:49:34,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:34,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:49:34,885 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:49:34,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-09-16 11:49:34,886 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:49:34,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:49:34,886 INFO L85 PathProgramCache]: Analyzing trace with hash -777165542, now seen corresponding path program 4 times [2022-09-16 11:49:34,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:49:34,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587361697] [2022-09-16 11:49:34,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:49:34,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:49:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:49:35,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:49:35,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:49:35,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587361697] [2022-09-16 11:49:35,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587361697] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:49:35,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:49:35,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:49:35,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112807706] [2022-09-16 11:49:35,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:49:35,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:49:35,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:49:35,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:49:35,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:49:35,139 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:49:35,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1894 places, 1805 transitions, 69397 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:35,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:49:35,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:49:35,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:49:41,125 INFO L130 PetriNetUnfolder]: 995/4341 cut-off events. [2022-09-16 11:49:41,126 INFO L131 PetriNetUnfolder]: For 783368/783460 co-relation queries the response was YES. [2022-09-16 11:49:41,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63754 conditions, 4341 events. 995/4341 cut-off events. For 783368/783460 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 46976 event pairs, 145 based on Foata normal form. 3/4343 useless extension candidates. Maximal degree in co-relation 63253. Up to 1422 conditions per place. [2022-09-16 11:49:41,289 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 1379 selfloop transitions, 109 changer transitions 11/1847 dead transitions. [2022-09-16 11:49:41,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1882 places, 1847 transitions, 72990 flow [2022-09-16 11:49:41,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:49:41,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:49:41,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 649 transitions. [2022-09-16 11:49:41,290 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5926940639269407 [2022-09-16 11:49:41,290 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 649 transitions. [2022-09-16 11:49:41,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 649 transitions. [2022-09-16 11:49:41,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:49:41,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 649 transitions. [2022-09-16 11:49:41,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 43.266666666666666) internal successors, (649), 15 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:41,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:41,292 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:41,292 INFO L175 Difference]: Start difference. First operand has 1894 places, 1805 transitions, 69397 flow. Second operand 15 states and 649 transitions. [2022-09-16 11:49:41,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1882 places, 1847 transitions, 72990 flow [2022-09-16 11:49:48,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1858 places, 1847 transitions, 72219 flow, removed 28 selfloop flow, removed 24 redundant places. [2022-09-16 11:49:48,158 INFO L231 Difference]: Finished difference. Result has 1859 places, 1799 transitions, 68698 flow [2022-09-16 11:49:48,159 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=68597, PETRI_DIFFERENCE_MINUEND_PLACES=1844, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1695, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=68698, PETRI_PLACES=1859, PETRI_TRANSITIONS=1799} [2022-09-16 11:49:48,159 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1783 predicate places. [2022-09-16 11:49:48,160 INFO L495 AbstractCegarLoop]: Abstraction has has 1859 places, 1799 transitions, 68698 flow [2022-09-16 11:49:48,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:48,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:49:48,160 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:49:48,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-09-16 11:49:48,160 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:49:48,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:49:48,161 INFO L85 PathProgramCache]: Analyzing trace with hash 524737480, now seen corresponding path program 5 times [2022-09-16 11:49:48,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:49:48,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254297648] [2022-09-16 11:49:48,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:49:48,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:49:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:49:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:49:48,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:49:48,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254297648] [2022-09-16 11:49:48,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254297648] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:49:48,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:49:48,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:49:48,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746801255] [2022-09-16 11:49:48,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:49:48,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:49:48,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:49:48,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:49:48,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:49:48,405 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:49:48,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1859 places, 1799 transitions, 68698 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:48,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:49:48,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:49:48,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:49:55,314 INFO L130 PetriNetUnfolder]: 993/4325 cut-off events. [2022-09-16 11:49:55,314 INFO L131 PetriNetUnfolder]: For 760318/760410 co-relation queries the response was YES. [2022-09-16 11:49:55,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62924 conditions, 4325 events. 993/4325 cut-off events. For 760318/760410 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 46613 event pairs, 138 based on Foata normal form. 3/4327 useless extension candidates. Maximal degree in co-relation 62436. Up to 1423 conditions per place. [2022-09-16 11:49:55,474 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 1375 selfloop transitions, 106 changer transitions 24/1850 dead transitions. [2022-09-16 11:49:55,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1865 places, 1850 transitions, 72444 flow [2022-09-16 11:49:55,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-16 11:49:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-16 11:49:55,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 728 transitions. [2022-09-16 11:49:55,475 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5866236905721193 [2022-09-16 11:49:55,475 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 728 transitions. [2022-09-16 11:49:55,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 728 transitions. [2022-09-16 11:49:55,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:49:55,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 728 transitions. [2022-09-16 11:49:55,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 42.8235294117647) internal successors, (728), 17 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:55,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:55,477 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:55,477 INFO L175 Difference]: Start difference. First operand has 1859 places, 1799 transitions, 68698 flow. Second operand 17 states and 728 transitions. [2022-09-16 11:49:55,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1865 places, 1850 transitions, 72444 flow [2022-09-16 11:50:02,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1854 places, 1850 transitions, 72293 flow, removed 2 selfloop flow, removed 11 redundant places. [2022-09-16 11:50:02,106 INFO L231 Difference]: Finished difference. Result has 1857 places, 1783 transitions, 68287 flow [2022-09-16 11:50:02,107 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=68547, PETRI_DIFFERENCE_MINUEND_PLACES=1838, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1799, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=68287, PETRI_PLACES=1857, PETRI_TRANSITIONS=1783} [2022-09-16 11:50:02,107 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1781 predicate places. [2022-09-16 11:50:02,107 INFO L495 AbstractCegarLoop]: Abstraction has has 1857 places, 1783 transitions, 68287 flow [2022-09-16 11:50:02,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:02,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:02,108 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:02,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-09-16 11:50:02,108 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:50:02,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:02,108 INFO L85 PathProgramCache]: Analyzing trace with hash 2143609138, now seen corresponding path program 6 times [2022-09-16 11:50:02,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:02,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607705266] [2022-09-16 11:50:02,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:02,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:02,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:02,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:02,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607705266] [2022-09-16 11:50:02,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607705266] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:02,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:02,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:50:02,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997612386] [2022-09-16 11:50:02,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:02,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:50:02,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:02,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:50:02,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:50:02,367 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:50:02,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1857 places, 1783 transitions, 68287 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:02,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:02,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:50:02,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:08,550 INFO L130 PetriNetUnfolder]: 984/4336 cut-off events. [2022-09-16 11:50:08,550 INFO L131 PetriNetUnfolder]: For 755823/755915 co-relation queries the response was YES. [2022-09-16 11:50:08,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62800 conditions, 4336 events. 984/4336 cut-off events. For 755823/755915 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 46863 event pairs, 141 based on Foata normal form. 3/4338 useless extension candidates. Maximal degree in co-relation 62311. Up to 1422 conditions per place. [2022-09-16 11:50:08,705 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 1361 selfloop transitions, 97 changer transitions 20/1821 dead transitions. [2022-09-16 11:50:08,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1861 places, 1821 transitions, 71761 flow [2022-09-16 11:50:08,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-16 11:50:08,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-16 11:50:08,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 684 transitions. [2022-09-16 11:50:08,706 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5856164383561644 [2022-09-16 11:50:08,706 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 684 transitions. [2022-09-16 11:50:08,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 684 transitions. [2022-09-16 11:50:08,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:08,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 684 transitions. [2022-09-16 11:50:08,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 42.75) internal successors, (684), 16 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:08,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:08,708 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:08,708 INFO L175 Difference]: Start difference. First operand has 1857 places, 1783 transitions, 68287 flow. Second operand 16 states and 684 transitions. [2022-09-16 11:50:08,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1861 places, 1821 transitions, 71761 flow [2022-09-16 11:50:15,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1837 places, 1821 transitions, 71129 flow, removed 5 selfloop flow, removed 24 redundant places. [2022-09-16 11:50:15,420 INFO L231 Difference]: Finished difference. Result has 1837 places, 1765 transitions, 67436 flow [2022-09-16 11:50:15,422 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=67614, PETRI_DIFFERENCE_MINUEND_PLACES=1822, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1782, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1685, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=67436, PETRI_PLACES=1837, PETRI_TRANSITIONS=1765} [2022-09-16 11:50:15,422 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1761 predicate places. [2022-09-16 11:50:15,422 INFO L495 AbstractCegarLoop]: Abstraction has has 1837 places, 1765 transitions, 67436 flow [2022-09-16 11:50:15,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:15,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:15,422 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:15,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-09-16 11:50:15,423 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:50:15,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:15,423 INFO L85 PathProgramCache]: Analyzing trace with hash 261656167, now seen corresponding path program 1 times [2022-09-16 11:50:15,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:15,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938957391] [2022-09-16 11:50:15,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:15,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:15,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:15,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:15,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938957391] [2022-09-16 11:50:15,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938957391] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:15,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:15,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:50:15,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580484635] [2022-09-16 11:50:15,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:15,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:50:15,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:15,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:50:15,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:50:15,630 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:50:15,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1837 places, 1765 transitions, 67436 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:15,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:15,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:50:15,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:21,731 INFO L130 PetriNetUnfolder]: 973/4322 cut-off events. [2022-09-16 11:50:21,731 INFO L131 PetriNetUnfolder]: For 747477/747571 co-relation queries the response was YES. [2022-09-16 11:50:21,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61916 conditions, 4322 events. 973/4322 cut-off events. For 747477/747571 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 46794 event pairs, 142 based on Foata normal form. 5/4326 useless extension candidates. Maximal degree in co-relation 61435. Up to 1367 conditions per place. [2022-09-16 11:50:21,904 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 1314 selfloop transitions, 92 changer transitions 28/1801 dead transitions. [2022-09-16 11:50:21,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1831 places, 1801 transitions, 70492 flow [2022-09-16 11:50:21,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:50:21,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:50:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 647 transitions. [2022-09-16 11:50:21,906 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5908675799086758 [2022-09-16 11:50:21,906 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 647 transitions. [2022-09-16 11:50:21,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 647 transitions. [2022-09-16 11:50:21,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:21,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 647 transitions. [2022-09-16 11:50:21,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 43.13333333333333) internal successors, (647), 15 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) [2022-09-16 11:50:21,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:21,907 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:22,039 INFO L175 Difference]: Start difference. First operand has 1837 places, 1765 transitions, 67436 flow. Second operand 15 states and 647 transitions. [2022-09-16 11:50:22,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1831 places, 1801 transitions, 70492 flow [2022-09-16 11:50:28,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1810 places, 1801 transitions, 69595 flow, removed 5 selfloop flow, removed 21 redundant places. [2022-09-16 11:50:28,443 INFO L231 Difference]: Finished difference. Result has 1811 places, 1740 transitions, 65576 flow [2022-09-16 11:50:28,444 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=66213, PETRI_DIFFERENCE_MINUEND_PLACES=1796, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1669, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=65576, PETRI_PLACES=1811, PETRI_TRANSITIONS=1740} [2022-09-16 11:50:28,444 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1735 predicate places. [2022-09-16 11:50:28,445 INFO L495 AbstractCegarLoop]: Abstraction has has 1811 places, 1740 transitions, 65576 flow [2022-09-16 11:50:28,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:28,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:28,445 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:28,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-09-16 11:50:28,445 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:50:28,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:28,445 INFO L85 PathProgramCache]: Analyzing trace with hash -279637361, now seen corresponding path program 2 times [2022-09-16 11:50:28,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:28,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63961665] [2022-09-16 11:50:28,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:28,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:28,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:28,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:28,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63961665] [2022-09-16 11:50:28,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63961665] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:28,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:28,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:50:28,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837010319] [2022-09-16 11:50:28,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:28,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:50:28,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:28,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:50:28,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:50:28,651 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:50:28,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1811 places, 1740 transitions, 65576 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:28,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:28,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:50:28,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:34,113 INFO L130 PetriNetUnfolder]: 969/4258 cut-off events. [2022-09-16 11:50:34,114 INFO L131 PetriNetUnfolder]: For 733215/733309 co-relation queries the response was YES. [2022-09-16 11:50:34,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61061 conditions, 4258 events. 969/4258 cut-off events. For 733215/733309 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 45968 event pairs, 146 based on Foata normal form. 8/4265 useless extension candidates. Maximal degree in co-relation 60586. Up to 1367 conditions per place. [2022-09-16 11:50:34,269 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 1361 selfloop transitions, 55 changer transitions 33/1810 dead transitions. [2022-09-16 11:50:34,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1799 places, 1810 transitions, 69295 flow [2022-09-16 11:50:34,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:50:34,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:50:34,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 679 transitions. [2022-09-16 11:50:34,271 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6200913242009133 [2022-09-16 11:50:34,271 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 679 transitions. [2022-09-16 11:50:34,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 679 transitions. [2022-09-16 11:50:34,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:34,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 679 transitions. [2022-09-16 11:50:34,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 45.266666666666666) internal successors, (679), 15 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:34,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:34,272 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:34,272 INFO L175 Difference]: Start difference. First operand has 1811 places, 1740 transitions, 65576 flow. Second operand 15 states and 679 transitions. [2022-09-16 11:50:34,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1799 places, 1810 transitions, 69295 flow [2022-09-16 11:50:40,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1771 places, 1810 transitions, 67460 flow, removed 28 selfloop flow, removed 28 redundant places. [2022-09-16 11:50:40,446 INFO L231 Difference]: Finished difference. Result has 1777 places, 1718 transitions, 62805 flow [2022-09-16 11:50:40,447 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=63476, PETRI_DIFFERENCE_MINUEND_PLACES=1757, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1681, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=62805, PETRI_PLACES=1777, PETRI_TRANSITIONS=1718} [2022-09-16 11:50:40,448 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1701 predicate places. [2022-09-16 11:50:40,448 INFO L495 AbstractCegarLoop]: Abstraction has has 1777 places, 1718 transitions, 62805 flow [2022-09-16 11:50:40,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:40,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:40,448 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:40,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-09-16 11:50:40,448 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:50:40,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:40,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1817323256, now seen corresponding path program 7 times [2022-09-16 11:50:40,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:40,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223526159] [2022-09-16 11:50:40,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:40,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:40,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:40,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:40,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223526159] [2022-09-16 11:50:40,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223526159] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:40,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:40,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:50:40,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200021118] [2022-09-16 11:50:40,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:40,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:50:40,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:40,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:50:40,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:50:40,655 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:50:40,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1777 places, 1718 transitions, 62805 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:40,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:40,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:50:40,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:46,065 INFO L130 PetriNetUnfolder]: 955/4183 cut-off events. [2022-09-16 11:50:46,065 INFO L131 PetriNetUnfolder]: For 655165/655253 co-relation queries the response was YES. [2022-09-16 11:50:46,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58757 conditions, 4183 events. 955/4183 cut-off events. For 655165/655253 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 44798 event pairs, 147 based on Foata normal form. 3/4185 useless extension candidates. Maximal degree in co-relation 58287. Up to 1422 conditions per place. [2022-09-16 11:50:46,209 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 1381 selfloop transitions, 53 changer transitions 15/1782 dead transitions. [2022-09-16 11:50:46,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1775 places, 1782 transitions, 66663 flow [2022-09-16 11:50:46,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:50:46,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:50:46,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 679 transitions. [2022-09-16 11:50:46,211 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6200913242009133 [2022-09-16 11:50:46,211 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 679 transitions. [2022-09-16 11:50:46,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 679 transitions. [2022-09-16 11:50:46,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:46,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 679 transitions. [2022-09-16 11:50:46,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 45.266666666666666) internal successors, (679), 15 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:46,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:46,212 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:46,212 INFO L175 Difference]: Start difference. First operand has 1777 places, 1718 transitions, 62805 flow. Second operand 15 states and 679 transitions. [2022-09-16 11:50:46,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1775 places, 1782 transitions, 66663 flow [2022-09-16 11:50:51,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1752 places, 1782 transitions, 66039 flow, removed 24 selfloop flow, removed 23 redundant places. [2022-09-16 11:50:51,412 INFO L231 Difference]: Finished difference. Result has 1758 places, 1713 transitions, 62251 flow [2022-09-16 11:50:51,413 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=62188, PETRI_DIFFERENCE_MINUEND_PLACES=1738, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=62251, PETRI_PLACES=1758, PETRI_TRANSITIONS=1713} [2022-09-16 11:50:51,414 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1682 predicate places. [2022-09-16 11:50:51,414 INFO L495 AbstractCegarLoop]: Abstraction has has 1758 places, 1713 transitions, 62251 flow [2022-09-16 11:50:51,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:51,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:51,414 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:51,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-09-16 11:50:51,414 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:50:51,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:51,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1044045528, now seen corresponding path program 8 times [2022-09-16 11:50:51,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:51,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718423729] [2022-09-16 11:50:51,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:51,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:51,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:51,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:51,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718423729] [2022-09-16 11:50:51,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718423729] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:51,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:51,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:50:51,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521460508] [2022-09-16 11:50:51,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:51,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:50:51,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:51,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:50:51,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:50:51,683 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:50:51,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1758 places, 1713 transitions, 62251 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:51,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:51,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:50:51,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:56,555 INFO L130 PetriNetUnfolder]: 951/4142 cut-off events. [2022-09-16 11:50:56,555 INFO L131 PetriNetUnfolder]: For 640297/640385 co-relation queries the response was YES. [2022-09-16 11:50:56,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58219 conditions, 4142 events. 951/4142 cut-off events. For 640297/640385 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 44322 event pairs, 150 based on Foata normal form. 3/4144 useless extension candidates. Maximal degree in co-relation 57756. Up to 1422 conditions per place. [2022-09-16 11:50:56,692 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 1372 selfloop transitions, 53 changer transitions 9/1767 dead transitions. [2022-09-16 11:50:56,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1766 places, 1767 transitions, 65952 flow [2022-09-16 11:50:56,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:50:56,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:50:56,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 663 transitions. [2022-09-16 11:50:56,693 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6054794520547945 [2022-09-16 11:50:56,694 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 663 transitions. [2022-09-16 11:50:56,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 663 transitions. [2022-09-16 11:50:56,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:56,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 663 transitions. [2022-09-16 11:50:56,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 44.2) internal successors, (663), 15 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:56,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:56,695 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:56,695 INFO L175 Difference]: Start difference. First operand has 1758 places, 1713 transitions, 62251 flow. Second operand 15 states and 663 transitions. [2022-09-16 11:50:56,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1766 places, 1767 transitions, 65952 flow [2022-09-16 11:51:01,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1752 places, 1767 transitions, 65819 flow, removed 14 selfloop flow, removed 14 redundant places. [2022-09-16 11:51:01,538 INFO L231 Difference]: Finished difference. Result has 1757 places, 1715 transitions, 62326 flow [2022-09-16 11:51:01,540 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=62136, PETRI_DIFFERENCE_MINUEND_PLACES=1738, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=62326, PETRI_PLACES=1757, PETRI_TRANSITIONS=1715} [2022-09-16 11:51:01,540 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1681 predicate places. [2022-09-16 11:51:01,540 INFO L495 AbstractCegarLoop]: Abstraction has has 1757 places, 1715 transitions, 62326 flow [2022-09-16 11:51:01,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:01,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:01,541 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:51:01,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-09-16 11:51:01,541 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:51:01,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:01,541 INFO L85 PathProgramCache]: Analyzing trace with hash 912006772, now seen corresponding path program 9 times [2022-09-16 11:51:01,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:01,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444003476] [2022-09-16 11:51:01,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:01,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:01,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:01,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:01,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444003476] [2022-09-16 11:51:01,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444003476] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:01,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:01,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:51:01,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373003191] [2022-09-16 11:51:01,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:01,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:51:01,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:01,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:51:01,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:51:01,779 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:51:01,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1757 places, 1715 transitions, 62326 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:01,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:01,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:51:01,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:07,357 INFO L130 PetriNetUnfolder]: 950/4139 cut-off events. [2022-09-16 11:51:07,357 INFO L131 PetriNetUnfolder]: For 638899/638987 co-relation queries the response was YES. [2022-09-16 11:51:07,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58077 conditions, 4139 events. 950/4139 cut-off events. For 638899/638987 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 44246 event pairs, 147 based on Foata normal form. 3/4141 useless extension candidates. Maximal degree in co-relation 57615. Up to 1422 conditions per place. [2022-09-16 11:51:07,505 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 1363 selfloop transitions, 50 changer transitions 17/1763 dead transitions. [2022-09-16 11:51:07,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1767 places, 1763 transitions, 65825 flow [2022-09-16 11:51:07,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-16 11:51:07,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-16 11:51:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 701 transitions. [2022-09-16 11:51:07,506 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6001712328767124 [2022-09-16 11:51:07,506 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 701 transitions. [2022-09-16 11:51:07,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 701 transitions. [2022-09-16 11:51:07,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:07,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 701 transitions. [2022-09-16 11:51:07,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 43.8125) internal successors, (701), 16 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:07,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:07,508 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:07,508 INFO L175 Difference]: Start difference. First operand has 1757 places, 1715 transitions, 62326 flow. Second operand 16 states and 701 transitions. [2022-09-16 11:51:07,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1767 places, 1763 transitions, 65825 flow [2022-09-16 11:51:12,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1758 places, 1763 transitions, 65733 flow, removed 10 selfloop flow, removed 9 redundant places. [2022-09-16 11:51:12,348 INFO L231 Difference]: Finished difference. Result has 1761 places, 1703 transitions, 62074 flow [2022-09-16 11:51:12,350 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=62244, PETRI_DIFFERENCE_MINUEND_PLACES=1743, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=62074, PETRI_PLACES=1761, PETRI_TRANSITIONS=1703} [2022-09-16 11:51:12,350 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1685 predicate places. [2022-09-16 11:51:12,350 INFO L495 AbstractCegarLoop]: Abstraction has has 1761 places, 1703 transitions, 62074 flow [2022-09-16 11:51:12,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:12,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:12,351 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:51:12,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-09-16 11:51:12,351 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:51:12,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:12,351 INFO L85 PathProgramCache]: Analyzing trace with hash 2033641540, now seen corresponding path program 10 times [2022-09-16 11:51:12,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:12,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971994768] [2022-09-16 11:51:12,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:12,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:12,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:12,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971994768] [2022-09-16 11:51:12,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971994768] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:12,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:12,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:51:12,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634647807] [2022-09-16 11:51:12,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:12,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:51:12,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:12,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:51:12,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:51:12,544 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:51:12,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1761 places, 1703 transitions, 62074 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:12,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:12,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:51:12,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:17,950 INFO L130 PetriNetUnfolder]: 947/4102 cut-off events. [2022-09-16 11:51:17,950 INFO L131 PetriNetUnfolder]: For 637891/637979 co-relation queries the response was YES. [2022-09-16 11:51:18,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57846 conditions, 4102 events. 947/4102 cut-off events. For 637891/637979 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 43750 event pairs, 149 based on Foata normal form. 3/4104 useless extension candidates. Maximal degree in co-relation 57384. Up to 1422 conditions per place. [2022-09-16 11:51:18,088 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 1354 selfloop transitions, 47 changer transitions 14/1748 dead transitions. [2022-09-16 11:51:18,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1767 places, 1748 transitions, 65463 flow [2022-09-16 11:51:18,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:51:18,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:51:18,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 659 transitions. [2022-09-16 11:51:18,090 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6018264840182649 [2022-09-16 11:51:18,090 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 659 transitions. [2022-09-16 11:51:18,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 659 transitions. [2022-09-16 11:51:18,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:18,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 659 transitions. [2022-09-16 11:51:18,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 43.93333333333333) internal successors, (659), 15 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:18,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:18,092 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:18,092 INFO L175 Difference]: Start difference. First operand has 1761 places, 1703 transitions, 62074 flow. Second operand 15 states and 659 transitions. [2022-09-16 11:51:18,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1767 places, 1748 transitions, 65463 flow [2022-09-16 11:51:23,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1746 places, 1748 transitions, 65294 flow, removed 8 selfloop flow, removed 21 redundant places. [2022-09-16 11:51:23,065 INFO L231 Difference]: Finished difference. Result has 1749 places, 1695 transitions, 61828 flow [2022-09-16 11:51:23,066 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=61912, PETRI_DIFFERENCE_MINUEND_PLACES=1732, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1656, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=61828, PETRI_PLACES=1749, PETRI_TRANSITIONS=1695} [2022-09-16 11:51:23,067 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1673 predicate places. [2022-09-16 11:51:23,067 INFO L495 AbstractCegarLoop]: Abstraction has has 1749 places, 1695 transitions, 61828 flow [2022-09-16 11:51:23,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:23,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:23,067 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:51:23,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-09-16 11:51:23,067 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:51:23,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:23,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1250057273, now seen corresponding path program 3 times [2022-09-16 11:51:23,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:23,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172460708] [2022-09-16 11:51:23,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:23,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:23,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:23,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:23,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172460708] [2022-09-16 11:51:23,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172460708] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:23,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:23,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:51:23,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92216682] [2022-09-16 11:51:23,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:23,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:51:23,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:23,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:51:23,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:51:23,301 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:51:23,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1749 places, 1695 transitions, 61828 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:23,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:23,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:51:23,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:28,577 INFO L130 PetriNetUnfolder]: 944/4067 cut-off events. [2022-09-16 11:51:28,577 INFO L131 PetriNetUnfolder]: For 635301/635388 co-relation queries the response was YES. [2022-09-16 11:51:28,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57265 conditions, 4067 events. 944/4067 cut-off events. For 635301/635388 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 43149 event pairs, 147 based on Foata normal form. 5/4072 useless extension candidates. Maximal degree in co-relation 56808. Up to 1369 conditions per place. [2022-09-16 11:51:28,721 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 1312 selfloop transitions, 46 changer transitions 24/1732 dead transitions. [2022-09-16 11:51:28,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1753 places, 1732 transitions, 64756 flow [2022-09-16 11:51:28,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:51:28,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:51:28,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 647 transitions. [2022-09-16 11:51:28,722 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5908675799086758 [2022-09-16 11:51:28,722 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 647 transitions. [2022-09-16 11:51:28,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 647 transitions. [2022-09-16 11:51:28,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:28,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 647 transitions. [2022-09-16 11:51:28,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 43.13333333333333) internal successors, (647), 15 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) [2022-09-16 11:51:28,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:28,724 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:28,724 INFO L175 Difference]: Start difference. First operand has 1749 places, 1695 transitions, 61828 flow. Second operand 15 states and 647 transitions. [2022-09-16 11:51:28,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1753 places, 1732 transitions, 64756 flow [2022-09-16 11:51:33,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1731 places, 1732 transitions, 63523 flow, removed 5 selfloop flow, removed 22 redundant places. [2022-09-16 11:51:33,475 INFO L231 Difference]: Finished difference. Result has 1732 places, 1673 transitions, 59370 flow [2022-09-16 11:51:33,476 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=60233, PETRI_DIFFERENCE_MINUEND_PLACES=1717, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=59370, PETRI_PLACES=1732, PETRI_TRANSITIONS=1673} [2022-09-16 11:51:33,477 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1656 predicate places. [2022-09-16 11:51:33,477 INFO L495 AbstractCegarLoop]: Abstraction has has 1732 places, 1673 transitions, 59370 flow [2022-09-16 11:51:33,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:33,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:33,477 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:51:33,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-09-16 11:51:33,477 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:51:33,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:33,478 INFO L85 PathProgramCache]: Analyzing trace with hash -371985501, now seen corresponding path program 4 times [2022-09-16 11:51:33,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:33,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459001014] [2022-09-16 11:51:33,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:33,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:33,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:33,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:33,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459001014] [2022-09-16 11:51:33,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459001014] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:33,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:33,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:51:33,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103311349] [2022-09-16 11:51:33,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:33,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:51:33,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:33,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:51:33,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:51:33,666 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:51:33,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1732 places, 1673 transitions, 59370 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:33,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:33,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:51:33,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:38,645 INFO L130 PetriNetUnfolder]: 935/4084 cut-off events. [2022-09-16 11:51:38,645 INFO L131 PetriNetUnfolder]: For 590257/590345 co-relation queries the response was YES. [2022-09-16 11:51:38,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55809 conditions, 4084 events. 935/4084 cut-off events. For 590257/590345 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 43365 event pairs, 148 based on Foata normal form. 5/4088 useless extension candidates. Maximal degree in co-relation 55359. Up to 1367 conditions per place. [2022-09-16 11:51:38,783 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 1291 selfloop transitions, 42 changer transitions 33/1708 dead transitions. [2022-09-16 11:51:38,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1731 places, 1708 transitions, 62265 flow [2022-09-16 11:51:38,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-16 11:51:38,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-16 11:51:38,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 681 transitions. [2022-09-16 11:51:38,792 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5830479452054794 [2022-09-16 11:51:38,792 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 681 transitions. [2022-09-16 11:51:38,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 681 transitions. [2022-09-16 11:51:38,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:38,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 681 transitions. [2022-09-16 11:51:38,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 42.5625) internal successors, (681), 16 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:38,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:38,794 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:38,794 INFO L175 Difference]: Start difference. First operand has 1732 places, 1673 transitions, 59370 flow. Second operand 16 states and 681 transitions. [2022-09-16 11:51:38,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1731 places, 1708 transitions, 62265 flow [2022-09-16 11:51:43,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1711 places, 1708 transitions, 61469 flow, removed 11 selfloop flow, removed 20 redundant places. [2022-09-16 11:51:43,496 INFO L231 Difference]: Finished difference. Result has 1711 places, 1640 transitions, 57299 flow [2022-09-16 11:51:43,497 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=58260, PETRI_DIFFERENCE_MINUEND_PLACES=1696, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1627, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=57299, PETRI_PLACES=1711, PETRI_TRANSITIONS=1640} [2022-09-16 11:51:43,498 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1635 predicate places. [2022-09-16 11:51:43,498 INFO L495 AbstractCegarLoop]: Abstraction has has 1711 places, 1640 transitions, 57299 flow [2022-09-16 11:51:43,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:43,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:43,498 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:51:43,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-09-16 11:51:43,498 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:51:43,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:43,499 INFO L85 PathProgramCache]: Analyzing trace with hash -2130967061, now seen corresponding path program 5 times [2022-09-16 11:51:43,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:43,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89136622] [2022-09-16 11:51:43,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:43,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:43,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:43,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:43,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89136622] [2022-09-16 11:51:43,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89136622] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:43,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:43,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:51:43,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448351878] [2022-09-16 11:51:43,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:43,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:51:43,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:43,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:51:43,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:51:43,744 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:51:43,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1711 places, 1640 transitions, 57299 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:43,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:43,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:51:43,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:48,473 INFO L130 PetriNetUnfolder]: 922/4013 cut-off events. [2022-09-16 11:51:48,473 INFO L131 PetriNetUnfolder]: For 561771/561854 co-relation queries the response was YES. [2022-09-16 11:51:48,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54067 conditions, 4013 events. 922/4013 cut-off events. For 561771/561854 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 42432 event pairs, 146 based on Foata normal form. 5/4018 useless extension candidates. Maximal degree in co-relation 53626. Up to 1368 conditions per place. [2022-09-16 11:51:48,617 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 1271 selfloop transitions, 36 changer transitions 33/1671 dead transitions. [2022-09-16 11:51:48,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1701 places, 1671 transitions, 60076 flow [2022-09-16 11:51:48,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:51:48,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:51:48,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 637 transitions. [2022-09-16 11:51:48,618 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5817351598173516 [2022-09-16 11:51:48,618 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 637 transitions. [2022-09-16 11:51:48,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 637 transitions. [2022-09-16 11:51:48,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:48,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 637 transitions. [2022-09-16 11:51:48,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 42.46666666666667) internal successors, (637), 15 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:48,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:48,620 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:48,620 INFO L175 Difference]: Start difference. First operand has 1711 places, 1640 transitions, 57299 flow. Second operand 15 states and 637 transitions. [2022-09-16 11:51:48,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1701 places, 1671 transitions, 60076 flow [2022-09-16 11:51:52,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1676 places, 1671 transitions, 59136 flow, removed 17 selfloop flow, removed 25 redundant places. [2022-09-16 11:51:52,787 INFO L231 Difference]: Finished difference. Result has 1676 places, 1608 transitions, 55056 flow [2022-09-16 11:51:52,788 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=56018, PETRI_DIFFERENCE_MINUEND_PLACES=1662, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=55056, PETRI_PLACES=1676, PETRI_TRANSITIONS=1608} [2022-09-16 11:51:52,789 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1600 predicate places. [2022-09-16 11:51:52,789 INFO L495 AbstractCegarLoop]: Abstraction has has 1676 places, 1608 transitions, 55056 flow [2022-09-16 11:51:52,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:52,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:52,789 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:51:52,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-09-16 11:51:52,789 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:51:52,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:52,789 INFO L85 PathProgramCache]: Analyzing trace with hash -375308321, now seen corresponding path program 6 times [2022-09-16 11:51:52,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:52,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044188909] [2022-09-16 11:51:52,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:52,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:52,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:52,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:52,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044188909] [2022-09-16 11:51:52,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044188909] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:52,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:52,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:51:52,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319822300] [2022-09-16 11:51:52,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:52,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:51:52,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:52,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:51:52,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:51:52,994 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:51:52,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1676 places, 1608 transitions, 55056 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:52,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:52,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:51:52,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:57,734 INFO L130 PetriNetUnfolder]: 926/3970 cut-off events. [2022-09-16 11:51:57,735 INFO L131 PetriNetUnfolder]: For 553887/553977 co-relation queries the response was YES. [2022-09-16 11:51:57,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54024 conditions, 3970 events. 926/3970 cut-off events. For 553887/553977 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 42017 event pairs, 120 based on Foata normal form. 17/3986 useless extension candidates. Maximal degree in co-relation 53590. Up to 1367 conditions per place. [2022-09-16 11:51:57,857 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 1086 selfloop transitions, 201 changer transitions 75/1671 dead transitions. [2022-09-16 11:51:57,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1656 places, 1671 transitions, 58225 flow [2022-09-16 11:51:57,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:51:57,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:51:57,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 657 transitions. [2022-09-16 11:51:57,859 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6 [2022-09-16 11:51:57,859 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 657 transitions. [2022-09-16 11:51:57,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 657 transitions. [2022-09-16 11:51:57,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:57,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 657 transitions. [2022-09-16 11:51:57,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 43.8) internal successors, (657), 15 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:57,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:57,861 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:57,861 INFO L175 Difference]: Start difference. First operand has 1676 places, 1608 transitions, 55056 flow. Second operand 15 states and 657 transitions. [2022-09-16 11:51:57,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1656 places, 1671 transitions, 58225 flow [2022-09-16 11:52:01,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1623 places, 1671 transitions, 56144 flow, removed 24 selfloop flow, removed 33 redundant places. [2022-09-16 11:52:01,846 INFO L231 Difference]: Finished difference. Result has 1629 places, 1555 transitions, 50835 flow [2022-09-16 11:52:01,848 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=52378, PETRI_DIFFERENCE_MINUEND_PLACES=1609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=50835, PETRI_PLACES=1629, PETRI_TRANSITIONS=1555} [2022-09-16 11:52:01,848 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1553 predicate places. [2022-09-16 11:52:01,848 INFO L495 AbstractCegarLoop]: Abstraction has has 1629 places, 1555 transitions, 50835 flow [2022-09-16 11:52:01,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:01,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:01,848 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:52:01,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-09-16 11:52:01,849 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:52:01,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:01,849 INFO L85 PathProgramCache]: Analyzing trace with hash 2135670479, now seen corresponding path program 7 times [2022-09-16 11:52:01,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:01,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618019420] [2022-09-16 11:52:01,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:01,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:02,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:02,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:02,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618019420] [2022-09-16 11:52:02,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618019420] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:52:02,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:52:02,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:52:02,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698678799] [2022-09-16 11:52:02,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:52:02,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:52:02,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:02,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:52:02,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:52:02,041 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:52:02,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1629 places, 1555 transitions, 50835 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:02,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:02,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:52:02,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:06,375 INFO L130 PetriNetUnfolder]: 902/3869 cut-off events. [2022-09-16 11:52:06,375 INFO L131 PetriNetUnfolder]: For 479913/479997 co-relation queries the response was YES. [2022-09-16 11:52:06,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50202 conditions, 3869 events. 902/3869 cut-off events. For 479913/479997 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 40546 event pairs, 121 based on Foata normal form. 11/3879 useless extension candidates. Maximal degree in co-relation 49776. Up to 1367 conditions per place. [2022-09-16 11:52:06,494 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 1089 selfloop transitions, 188 changer transitions 46/1621 dead transitions. [2022-09-16 11:52:06,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1611 places, 1621 transitions, 54278 flow [2022-09-16 11:52:06,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:52:06,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:52:06,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 653 transitions. [2022-09-16 11:52:06,495 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5963470319634703 [2022-09-16 11:52:06,495 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 653 transitions. [2022-09-16 11:52:06,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 653 transitions. [2022-09-16 11:52:06,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:06,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 653 transitions. [2022-09-16 11:52:06,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 43.53333333333333) internal successors, (653), 15 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:06,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:06,497 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:06,497 INFO L175 Difference]: Start difference. First operand has 1629 places, 1555 transitions, 50835 flow. Second operand 15 states and 653 transitions. [2022-09-16 11:52:06,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1611 places, 1621 transitions, 54278 flow [2022-09-16 11:52:09,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1577 places, 1621 transitions, 52313 flow, removed 52 selfloop flow, removed 34 redundant places. [2022-09-16 11:52:09,825 INFO L231 Difference]: Finished difference. Result has 1584 places, 1534 transitions, 48211 flow [2022-09-16 11:52:09,826 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=48607, PETRI_DIFFERENCE_MINUEND_PLACES=1563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=48211, PETRI_PLACES=1584, PETRI_TRANSITIONS=1534} [2022-09-16 11:52:09,827 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1508 predicate places. [2022-09-16 11:52:09,827 INFO L495 AbstractCegarLoop]: Abstraction has has 1584 places, 1534 transitions, 48211 flow [2022-09-16 11:52:09,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:09,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:09,827 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:52:09,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-09-16 11:52:09,827 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:52:09,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:09,827 INFO L85 PathProgramCache]: Analyzing trace with hash 525491337, now seen corresponding path program 8 times [2022-09-16 11:52:09,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:09,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844444454] [2022-09-16 11:52:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:09,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:10,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:10,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:10,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844444454] [2022-09-16 11:52:10,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844444454] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:52:10,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:52:10,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:52:10,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504760315] [2022-09-16 11:52:10,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:52:10,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:52:10,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:10,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:52:10,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:52:10,020 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:52:10,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1584 places, 1534 transitions, 48211 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:10,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:10,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:52:10,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:14,123 INFO L130 PetriNetUnfolder]: 886/3782 cut-off events. [2022-09-16 11:52:14,123 INFO L131 PetriNetUnfolder]: For 420427/420507 co-relation queries the response was YES. [2022-09-16 11:52:14,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47544 conditions, 3782 events. 886/3782 cut-off events. For 420427/420507 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 39356 event pairs, 118 based on Foata normal form. 8/3789 useless extension candidates. Maximal degree in co-relation 47127. Up to 1367 conditions per place. [2022-09-16 11:52:14,237 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 1065 selfloop transitions, 171 changer transitions 68/1586 dead transitions. [2022-09-16 11:52:14,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1583 places, 1586 transitions, 51269 flow [2022-09-16 11:52:14,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-16 11:52:14,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-16 11:52:14,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 688 transitions. [2022-09-16 11:52:14,239 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.589041095890411 [2022-09-16 11:52:14,239 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 688 transitions. [2022-09-16 11:52:14,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 688 transitions. [2022-09-16 11:52:14,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:14,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 688 transitions. [2022-09-16 11:52:14,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 43.0) internal successors, (688), 16 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:14,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:14,240 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:14,240 INFO L175 Difference]: Start difference. First operand has 1584 places, 1534 transitions, 48211 flow. Second operand 16 states and 688 transitions. [2022-09-16 11:52:14,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1583 places, 1586 transitions, 51269 flow [2022-09-16 11:52:17,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1557 places, 1586 transitions, 50004 flow, removed 32 selfloop flow, removed 26 redundant places. [2022-09-16 11:52:17,286 INFO L231 Difference]: Finished difference. Result has 1562 places, 1479 transitions, 45302 flow [2022-09-16 11:52:17,288 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=46652, PETRI_DIFFERENCE_MINUEND_PLACES=1542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=45302, PETRI_PLACES=1562, PETRI_TRANSITIONS=1479} [2022-09-16 11:52:17,288 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1486 predicate places. [2022-09-16 11:52:17,288 INFO L495 AbstractCegarLoop]: Abstraction has has 1562 places, 1479 transitions, 45302 flow [2022-09-16 11:52:17,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:17,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:17,288 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:52:17,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-09-16 11:52:17,289 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:52:17,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:17,289 INFO L85 PathProgramCache]: Analyzing trace with hash -244481067, now seen corresponding path program 9 times [2022-09-16 11:52:17,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:17,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026386508] [2022-09-16 11:52:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:17,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:17,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:17,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:17,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026386508] [2022-09-16 11:52:17,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026386508] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:52:17,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:52:17,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:52:17,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250364206] [2022-09-16 11:52:17,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:52:17,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:52:17,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:17,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:52:17,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:52:17,534 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:52:17,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1562 places, 1479 transitions, 45302 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:17,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:17,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:52:17,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:21,600 INFO L130 PetriNetUnfolder]: 855/3660 cut-off events. [2022-09-16 11:52:21,601 INFO L131 PetriNetUnfolder]: For 378768/378844 co-relation queries the response was YES. [2022-09-16 11:52:21,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44757 conditions, 3660 events. 855/3660 cut-off events. For 378768/378844 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 37812 event pairs, 117 based on Foata normal form. 5/3664 useless extension candidates. Maximal degree in co-relation 44349. Up to 1367 conditions per place. [2022-09-16 11:52:21,729 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 1028 selfloop transitions, 181 changer transitions 25/1505 dead transitions. [2022-09-16 11:52:21,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1548 places, 1505 transitions, 47727 flow [2022-09-16 11:52:21,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:52:21,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:52:21,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 636 transitions. [2022-09-16 11:52:21,731 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5808219178082191 [2022-09-16 11:52:21,731 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 636 transitions. [2022-09-16 11:52:21,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 636 transitions. [2022-09-16 11:52:21,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:21,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 636 transitions. [2022-09-16 11:52:21,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 42.4) internal successors, (636), 15 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:21,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:21,732 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:21,732 INFO L175 Difference]: Start difference. First operand has 1562 places, 1479 transitions, 45302 flow. Second operand 15 states and 636 transitions. [2022-09-16 11:52:21,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1548 places, 1505 transitions, 47727 flow [2022-09-16 11:52:24,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1504 places, 1505 transitions, 45944 flow, removed 35 selfloop flow, removed 44 redundant places. [2022-09-16 11:52:24,637 INFO L231 Difference]: Finished difference. Result has 1505 places, 1457 transitions, 42945 flow [2022-09-16 11:52:24,639 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=43231, PETRI_DIFFERENCE_MINUEND_PLACES=1490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=42945, PETRI_PLACES=1505, PETRI_TRANSITIONS=1457} [2022-09-16 11:52:24,639 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1429 predicate places. [2022-09-16 11:52:24,639 INFO L495 AbstractCegarLoop]: Abstraction has has 1505 places, 1457 transitions, 42945 flow [2022-09-16 11:52:24,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:24,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:24,640 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:52:24,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-09-16 11:52:24,640 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:52:24,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:24,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1905695129, now seen corresponding path program 10 times [2022-09-16 11:52:24,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:24,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643021879] [2022-09-16 11:52:24,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:24,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:24,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:24,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:24,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643021879] [2022-09-16 11:52:24,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643021879] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:52:24,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:52:24,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:52:24,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561073276] [2022-09-16 11:52:24,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:52:24,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:52:24,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:24,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:52:24,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:52:24,865 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:52:24,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1505 places, 1457 transitions, 42945 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:24,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:24,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:52:24,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:28,784 INFO L130 PetriNetUnfolder]: 845/3619 cut-off events. [2022-09-16 11:52:28,785 INFO L131 PetriNetUnfolder]: For 335348/335422 co-relation queries the response was YES. [2022-09-16 11:52:28,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42689 conditions, 3619 events. 845/3619 cut-off events. For 335348/335422 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 37276 event pairs, 120 based on Foata normal form. 5/3623 useless extension candidates. Maximal degree in co-relation 42303. Up to 1367 conditions per place. [2022-09-16 11:52:28,881 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 1021 selfloop transitions, 178 changer transitions 36/1501 dead transitions. [2022-09-16 11:52:28,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1505 places, 1501 transitions, 45778 flow [2022-09-16 11:52:28,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-16 11:52:28,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-16 11:52:28,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 715 transitions. [2022-09-16 11:52:28,882 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5761482675261885 [2022-09-16 11:52:28,882 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 715 transitions. [2022-09-16 11:52:28,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 715 transitions. [2022-09-16 11:52:28,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:28,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 715 transitions. [2022-09-16 11:52:28,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 42.05882352941177) internal successors, (715), 17 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:28,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:28,884 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:28,884 INFO L175 Difference]: Start difference. First operand has 1505 places, 1457 transitions, 42945 flow. Second operand 17 states and 715 transitions. [2022-09-16 11:52:28,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1505 places, 1501 transitions, 45778 flow [2022-09-16 11:52:31,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1488 places, 1501 transitions, 45083 flow, removed 6 selfloop flow, removed 17 redundant places. [2022-09-16 11:52:31,590 INFO L231 Difference]: Finished difference. Result has 1491 places, 1435 transitions, 42106 flow [2022-09-16 11:52:31,591 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=42250, PETRI_DIFFERENCE_MINUEND_PLACES=1472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=42106, PETRI_PLACES=1491, PETRI_TRANSITIONS=1435} [2022-09-16 11:52:31,591 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1415 predicate places. [2022-09-16 11:52:31,591 INFO L495 AbstractCegarLoop]: Abstraction has has 1491 places, 1435 transitions, 42106 flow [2022-09-16 11:52:31,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:31,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:31,592 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:52:31,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-09-16 11:52:31,592 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:52:31,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:31,592 INFO L85 PathProgramCache]: Analyzing trace with hash 633590705, now seen corresponding path program 11 times [2022-09-16 11:52:31,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:31,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665567128] [2022-09-16 11:52:31,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:31,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:31,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:31,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:31,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665567128] [2022-09-16 11:52:31,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665567128] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:52:31,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:52:31,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:52:31,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008078076] [2022-09-16 11:52:31,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:52:31,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:52:31,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:31,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:52:31,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:52:31,829 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:52:31,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1491 places, 1435 transitions, 42106 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:31,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:31,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:52:31,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:35,719 INFO L130 PetriNetUnfolder]: 824/3539 cut-off events. [2022-09-16 11:52:35,720 INFO L131 PetriNetUnfolder]: For 314476/314548 co-relation queries the response was YES. [2022-09-16 11:52:35,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41360 conditions, 3539 events. 824/3539 cut-off events. For 314476/314548 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 36229 event pairs, 118 based on Foata normal form. 5/3543 useless extension candidates. Maximal degree in co-relation 40978. Up to 1367 conditions per place. [2022-09-16 11:52:35,816 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 998 selfloop transitions, 169 changer transitions 33/1458 dead transitions. [2022-09-16 11:52:35,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1493 places, 1458 transitions, 44431 flow [2022-09-16 11:52:35,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-16 11:52:35,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-16 11:52:35,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 671 transitions. [2022-09-16 11:52:35,817 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.574486301369863 [2022-09-16 11:52:35,817 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 671 transitions. [2022-09-16 11:52:35,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 671 transitions. [2022-09-16 11:52:35,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:35,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 671 transitions. [2022-09-16 11:52:35,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 41.9375) internal successors, (671), 16 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:35,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:35,818 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:35,819 INFO L175 Difference]: Start difference. First operand has 1491 places, 1435 transitions, 42106 flow. Second operand 16 states and 671 transitions. [2022-09-16 11:52:35,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1493 places, 1458 transitions, 44431 flow [2022-09-16 11:52:38,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1469 places, 1458 transitions, 43570 flow, removed 9 selfloop flow, removed 24 redundant places. [2022-09-16 11:52:38,539 INFO L231 Difference]: Finished difference. Result has 1469 places, 1403 transitions, 40487 flow [2022-09-16 11:52:38,540 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=40980, PETRI_DIFFERENCE_MINUEND_PLACES=1454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=40487, PETRI_PLACES=1469, PETRI_TRANSITIONS=1403} [2022-09-16 11:52:38,540 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1393 predicate places. [2022-09-16 11:52:38,540 INFO L495 AbstractCegarLoop]: Abstraction has has 1469 places, 1403 transitions, 40487 flow [2022-09-16 11:52:38,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:38,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:38,541 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:52:38,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-09-16 11:52:38,541 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:52:38,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:38,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1445800026, now seen corresponding path program 11 times [2022-09-16 11:52:38,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:38,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329296913] [2022-09-16 11:52:38,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:38,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:38,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:38,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:38,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329296913] [2022-09-16 11:52:38,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329296913] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:52:38,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:52:38,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:52:38,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60367844] [2022-09-16 11:52:38,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:52:38,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:52:38,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:38,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:52:38,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:52:38,771 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:52:38,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1469 places, 1403 transitions, 40487 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:38,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:38,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:52:38,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:41,960 INFO L130 PetriNetUnfolder]: 808/3494 cut-off events. [2022-09-16 11:52:41,960 INFO L131 PetriNetUnfolder]: For 294332/294399 co-relation queries the response was YES. [2022-09-16 11:52:42,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40228 conditions, 3494 events. 808/3494 cut-off events. For 294332/294399 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 35704 event pairs, 119 based on Foata normal form. 3/3497 useless extension candidates. Maximal degree in co-relation 39854. Up to 1422 conditions per place. [2022-09-16 11:52:42,166 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 1003 selfloop transitions, 162 changer transitions 18/1429 dead transitions. [2022-09-16 11:52:42,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1459 places, 1429 transitions, 43049 flow [2022-09-16 11:52:42,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:52:42,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:52:42,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 635 transitions. [2022-09-16 11:52:42,167 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5799086757990868 [2022-09-16 11:52:42,167 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 635 transitions. [2022-09-16 11:52:42,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 635 transitions. [2022-09-16 11:52:42,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:42,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 635 transitions. [2022-09-16 11:52:42,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 42.333333333333336) internal successors, (635), 15 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:42,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:42,168 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:42,168 INFO L175 Difference]: Start difference. First operand has 1469 places, 1403 transitions, 40487 flow. Second operand 15 states and 635 transitions. [2022-09-16 11:52:42,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1459 places, 1429 transitions, 43049 flow [2022-09-16 11:52:44,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1438 places, 1429 transitions, 42322 flow, removed 8 selfloop flow, removed 21 redundant places. [2022-09-16 11:52:44,595 INFO L231 Difference]: Finished difference. Result has 1442 places, 1392 transitions, 39891 flow [2022-09-16 11:52:44,596 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=39762, PETRI_DIFFERENCE_MINUEND_PLACES=1424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=39891, PETRI_PLACES=1442, PETRI_TRANSITIONS=1392} [2022-09-16 11:52:44,597 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1366 predicate places. [2022-09-16 11:52:44,597 INFO L495 AbstractCegarLoop]: Abstraction has has 1442 places, 1392 transitions, 39891 flow [2022-09-16 11:52:44,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:44,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:44,597 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:52:44,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-09-16 11:52:44,597 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:52:44,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:44,597 INFO L85 PathProgramCache]: Analyzing trace with hash -2036912896, now seen corresponding path program 12 times [2022-09-16 11:52:44,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:44,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352506852] [2022-09-16 11:52:44,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:44,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:44,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:44,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:44,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352506852] [2022-09-16 11:52:44,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352506852] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:52:44,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:52:44,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:52:44,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305460816] [2022-09-16 11:52:44,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:52:44,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:52:44,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:44,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:52:44,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:52:44,801 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:52:44,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1442 places, 1392 transitions, 39891 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:44,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:44,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:52:44,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:48,138 INFO L130 PetriNetUnfolder]: 806/3456 cut-off events. [2022-09-16 11:52:48,138 INFO L131 PetriNetUnfolder]: For 294073/294141 co-relation queries the response was YES. [2022-09-16 11:52:48,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39628 conditions, 3456 events. 806/3456 cut-off events. For 294073/294141 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 35206 event pairs, 129 based on Foata normal form. 3/3458 useless extension candidates. Maximal degree in co-relation 39255. Up to 1422 conditions per place. [2022-09-16 11:52:48,234 INFO L137 encePairwiseOnDemand]: 58/73 looper letters, 1120 selfloop transitions, 82 changer transitions 14/1462 dead transitions. [2022-09-16 11:52:48,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1438 places, 1462 transitions, 43360 flow [2022-09-16 11:52:48,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:52:48,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:52:48,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 667 transitions. [2022-09-16 11:52:48,235 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6091324200913242 [2022-09-16 11:52:48,235 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 667 transitions. [2022-09-16 11:52:48,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 667 transitions. [2022-09-16 11:52:48,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:48,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 667 transitions. [2022-09-16 11:52:48,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 44.46666666666667) internal successors, (667), 15 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:48,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:48,236 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:48,237 INFO L175 Difference]: Start difference. First operand has 1442 places, 1392 transitions, 39891 flow. Second operand 15 states and 667 transitions. [2022-09-16 11:52:48,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1438 places, 1462 transitions, 43360 flow [2022-09-16 11:52:50,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1417 places, 1462 transitions, 42728 flow, removed 26 selfloop flow, removed 21 redundant places. [2022-09-16 11:52:50,755 INFO L231 Difference]: Finished difference. Result has 1423 places, 1389 transitions, 39442 flow [2022-09-16 11:52:50,756 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=39302, PETRI_DIFFERENCE_MINUEND_PLACES=1403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=39442, PETRI_PLACES=1423, PETRI_TRANSITIONS=1389} [2022-09-16 11:52:50,756 INFO L287 CegarLoopForPetriNet]: 76 programPoint places, 1347 predicate places. [2022-09-16 11:52:50,757 INFO L495 AbstractCegarLoop]: Abstraction has has 1423 places, 1389 transitions, 39442 flow [2022-09-16 11:52:50,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:50,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:50,757 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:52:50,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-09-16 11:52:50,757 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:52:50,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:50,757 INFO L85 PathProgramCache]: Analyzing trace with hash 161093783, now seen corresponding path program 12 times [2022-09-16 11:52:50,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:50,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169763398] [2022-09-16 11:52:50,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:50,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:50,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:50,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169763398] [2022-09-16 11:52:50,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169763398] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:52:50,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:52:50,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:52:50,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308891129] [2022-09-16 11:52:50,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:52:50,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:52:50,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:50,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:52:50,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:52:50,978 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2022-09-16 11:52:50,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1423 places, 1389 transitions, 39442 flow. Second operand has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:50,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:50,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2022-09-16 11:52:50,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-09-16 11:52:52,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-16 11:52:52,617 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2022-09-16 11:52:52,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-09-16 11:52:52,617 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (15states, 35/73 universal loopers) in iteration 119,while PetriNetUnfolder was constructing finite prefix that currently has 12489 conditions, 1378 events (378/1377 cut-off events. For 57764/57767 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 12844 event pairs, 126 based on Foata normal form. 2/1529 useless extension candidates. Maximal degree in co-relation 12121. Up to 707 conditions per place.). [2022-09-16 11:52:52,619 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2022-09-16 11:52:52,619 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 7 remaining) [2022-09-16 11:52:52,619 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-09-16 11:52:52,619 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2022-09-16 11:52:52,619 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2022-09-16 11:52:52,619 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2022-09-16 11:52:52,620 INFO L444 BasicCegarLoop]: Path program histogram: [38, 32, 21, 12, 12, 1, 1, 1, 1] [2022-09-16 11:52:52,624 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-09-16 11:52:52,626 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:52:52,626 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:52:52,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:52:52 BasicIcfg [2022-09-16 11:52:52,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:52:52,631 INFO L158 Benchmark]: Toolchain (without parser) took 747238.14ms. Allocated memory was 181.4MB in the beginning and 4.9GB in the end (delta: 4.7GB). Free memory was 127.1MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. [2022-09-16 11:52:52,631 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 181.4MB. Free memory is still 145.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:52:52,631 INFO L158 Benchmark]: CACSL2BoogieTranslator took 626.50ms. Allocated memory is still 181.4MB. Free memory was 126.9MB in the beginning and 132.6MB in the end (delta: -5.6MB). Peak memory consumption was 11.7MB. Max. memory is 8.0GB. [2022-09-16 11:52:52,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.20ms. Allocated memory is still 181.4MB. Free memory was 132.6MB in the beginning and 130.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:52:52,632 INFO L158 Benchmark]: Boogie Preprocessor took 32.89ms. Allocated memory is still 181.4MB. Free memory was 130.0MB in the beginning and 128.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:52:52,632 INFO L158 Benchmark]: RCFGBuilder took 451.93ms. Allocated memory is still 181.4MB. Free memory was 128.4MB in the beginning and 116.0MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-09-16 11:52:52,632 INFO L158 Benchmark]: TraceAbstraction took 746066.96ms. Allocated memory was 181.4MB in the beginning and 4.9GB in the end (delta: 4.7GB). Free memory was 115.5MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. [2022-09-16 11:52:52,633 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 181.4MB. Free memory is still 145.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 626.50ms. Allocated memory is still 181.4MB. Free memory was 126.9MB in the beginning and 132.6MB in the end (delta: -5.6MB). Peak memory consumption was 11.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.20ms. Allocated memory is still 181.4MB. Free memory was 132.6MB in the beginning and 130.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.89ms. Allocated memory is still 181.4MB. Free memory was 130.0MB in the beginning and 128.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 451.93ms. Allocated memory is still 181.4MB. Free memory was 128.4MB in the beginning and 116.0MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 746066.96ms. Allocated memory was 181.4MB in the beginning and 4.9GB in the end (delta: 4.7GB). Free memory was 115.5MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1235]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (15states, 35/73 universal loopers) in iteration 119,while PetriNetUnfolder was constructing finite prefix that currently has 12489 conditions, 1378 events (378/1377 cut-off events. For 57764/57767 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 12844 event pairs, 126 based on Foata normal form. 2/1529 useless extension candidates. Maximal degree in co-relation 12121. Up to 707 conditions per place.). - TimeoutResultAtElement [Line: 1235]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (15states, 35/73 universal loopers) in iteration 119,while PetriNetUnfolder was constructing finite prefix that currently has 12489 conditions, 1378 events (378/1377 cut-off events. For 57764/57767 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 12844 event pairs, 126 based on Foata normal form. 2/1529 useless extension candidates. Maximal degree in co-relation 12121. Up to 707 conditions per place.). - TimeoutResultAtElement [Line: 1235]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (15states, 35/73 universal loopers) in iteration 119,while PetriNetUnfolder was constructing finite prefix that currently has 12489 conditions, 1378 events (378/1377 cut-off events. For 57764/57767 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 12844 event pairs, 126 based on Foata normal form. 2/1529 useless extension candidates. Maximal degree in co-relation 12121. Up to 707 conditions per place.). - TimeoutResultAtElement [Line: 1246]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (15states, 35/73 universal loopers) in iteration 119,while PetriNetUnfolder was constructing finite prefix that currently has 12489 conditions, 1378 events (378/1377 cut-off events. For 57764/57767 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 12844 event pairs, 126 based on Foata normal form. 2/1529 useless extension candidates. Maximal degree in co-relation 12121. Up to 707 conditions per place.). - TimeoutResultAtElement [Line: 1235]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (15states, 35/73 universal loopers) in iteration 119,while PetriNetUnfolder was constructing finite prefix that currently has 12489 conditions, 1378 events (378/1377 cut-off events. For 57764/57767 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 12844 event pairs, 126 based on Foata normal form. 2/1529 useless extension candidates. Maximal degree in co-relation 12121. Up to 707 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 97 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 745.9s, OverallIterations: 119, TraceHistogramMax: 1, PathProgramHistogramMax: 38, EmptinessCheckTime: 0.0s, AutomataDifference: 709.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33338 SdHoareTripleChecker+Valid, 35.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33338 mSDsluCounter, 56505 SdHoareTripleChecker+Invalid, 29.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50252 mSDsCounter, 2159 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72294 IncrementalHoareTripleChecker+Invalid, 74453 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2159 mSolverCounterUnsat, 6609 mSDtfsCounter, 72294 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4931 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 4731 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50883 ImplicationChecksByTransitivity, 173.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76897occurred in iteration=94, InterpolantAutomatonStates: 3351, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 33.6s InterpolantComputationTime, 6153 NumberOfCodeBlocks, 6153 NumberOfCodeBlocksAsserted, 119 NumberOfCheckSat, 6034 ConstructedInterpolants, 0 QuantifiedInterpolants, 61961 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 119 InterpolantComputations, 119 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