/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/clever.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 23:59:57,892 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 23:59:57,969 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 23:59:57,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 23:59:57,974 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 23:59:58,011 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 23:59:58,012 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 23:59:58,012 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 23:59:58,013 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 23:59:58,016 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 23:59:58,016 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 23:59:58,017 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 23:59:58,017 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 23:59:58,018 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 23:59:58,018 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 23:59:58,018 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 23:59:58,019 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 23:59:58,019 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 23:59:58,019 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 23:59:58,019 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 23:59:58,020 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 23:59:58,020 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 23:59:58,021 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 23:59:58,021 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 23:59:58,021 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 23:59:58,022 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 23:59:58,022 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 23:59:58,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 23:59:58,022 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 23:59:58,023 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 23:59:58,023 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 23:59:58,024 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 23:59:58,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 23:59:58,024 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 23:59:58,024 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 23:59:58,024 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 23:59:58,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 23:59:58,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 23:59:58,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 23:59:58,366 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 23:59:58,366 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 23:59:58,367 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/clever.wvr.c [2023-08-26 23:59:59,447 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 23:59:59,645 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 23:59:59,646 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/clever.wvr.c [2023-08-26 23:59:59,651 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/620f9dcad/907262303f81438eb9e93c5e8cfccc90/FLAGa32ad3f01 [2023-08-26 23:59:59,661 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/620f9dcad/907262303f81438eb9e93c5e8cfccc90 [2023-08-26 23:59:59,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 23:59:59,665 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 23:59:59,666 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 23:59:59,666 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 23:59:59,668 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 23:59:59,669 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:59:59" (1/1) ... [2023-08-26 23:59:59,670 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187794db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:59, skipping insertion in model container [2023-08-26 23:59:59,670 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:59:59" (1/1) ... [2023-08-26 23:59:59,693 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 23:59:59,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 23:59:59,870 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 23:59:59,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 23:59:59,913 INFO L206 MainTranslator]: Completed translation [2023-08-26 23:59:59,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:59 WrapperNode [2023-08-26 23:59:59,914 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 23:59:59,915 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 23:59:59,915 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 23:59:59,915 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 23:59:59,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:59" (1/1) ... [2023-08-26 23:59:59,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:59" (1/1) ... [2023-08-26 23:59:59,960 INFO L138 Inliner]: procedures = 19, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 87 [2023-08-26 23:59:59,961 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 23:59:59,962 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 23:59:59,962 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 23:59:59,963 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 23:59:59,970 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:59" (1/1) ... [2023-08-26 23:59:59,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:59" (1/1) ... [2023-08-26 23:59:59,975 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:59" (1/1) ... [2023-08-26 23:59:59,976 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:59" (1/1) ... [2023-08-26 23:59:59,989 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:59" (1/1) ... [2023-08-26 23:59:59,992 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:59" (1/1) ... [2023-08-26 23:59:59,993 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:59" (1/1) ... [2023-08-26 23:59:59,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:59" (1/1) ... [2023-08-26 23:59:59,995 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 23:59:59,996 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 23:59:59,996 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 23:59:59,996 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 00:00:00,004 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:59" (1/1) ... [2023-08-27 00:00:00,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:00:00,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:00:00,038 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) [2023-08-27 00:00:00,050 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 [2023-08-27 00:00:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 00:00:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 00:00:00,079 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 00:00:00,079 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 00:00:00,079 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 00:00:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 00:00:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 00:00:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 00:00:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 00:00:00,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 00:00:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 00:00:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 00:00:00,081 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 00:00:00,159 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 00:00:00,161 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 00:00:00,414 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 00:00:00,421 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 00:00:00,421 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-27 00:00:00,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:00:00 BoogieIcfgContainer [2023-08-27 00:00:00,423 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 00:00:00,425 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 00:00:00,425 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 00:00:00,429 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 00:00:00,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 11:59:59" (1/3) ... [2023-08-27 00:00:00,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344d008f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:00:00, skipping insertion in model container [2023-08-27 00:00:00,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:59" (2/3) ... [2023-08-27 00:00:00,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344d008f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:00:00, skipping insertion in model container [2023-08-27 00:00:00,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:00:00" (3/3) ... [2023-08-27 00:00:00,431 INFO L112 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2023-08-27 00:00:00,446 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 00:00:00,446 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-27 00:00:00,446 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 00:00:00,539 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 00:00:00,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 132 transitions, 280 flow [2023-08-27 00:00:00,664 INFO L124 PetriNetUnfolderBase]: 9/130 cut-off events. [2023-08-27 00:00:00,664 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 00:00:00,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 130 events. 9/130 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 138 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-08-27 00:00:00,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 132 transitions, 280 flow [2023-08-27 00:00:00,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 121 transitions, 254 flow [2023-08-27 00:00:00,679 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 00:00:00,690 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 121 transitions, 254 flow [2023-08-27 00:00:00,694 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 121 transitions, 254 flow [2023-08-27 00:00:00,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 121 transitions, 254 flow [2023-08-27 00:00:00,743 INFO L124 PetriNetUnfolderBase]: 9/121 cut-off events. [2023-08-27 00:00:00,744 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 00:00:00,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 121 events. 9/121 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 137 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-08-27 00:00:00,747 INFO L119 LiptonReduction]: Number of co-enabled transitions 1300 [2023-08-27 00:00:04,324 INFO L134 LiptonReduction]: Checked pairs total: 1341 [2023-08-27 00:00:04,324 INFO L136 LiptonReduction]: Total number of compositions: 121 [2023-08-27 00:00:04,337 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 00:00:04,342 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;@1bd68666, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 00:00:04,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-08-27 00:00:04,347 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 00:00:04,347 INFO L124 PetriNetUnfolderBase]: 3/9 cut-off events. [2023-08-27 00:00:04,347 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 00:00:04,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:04,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 00:00:04,348 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:00:04,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:04,353 INFO L85 PathProgramCache]: Analyzing trace with hash 15115781, now seen corresponding path program 1 times [2023-08-27 00:00:04,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:04,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883844200] [2023-08-27 00:00:04,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:04,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:04,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:04,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:04,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883844200] [2023-08-27 00:00:04,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883844200] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:00:04,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:00:04,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:00:04,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356336220] [2023-08-27 00:00:04,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:00:04,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:00:04,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:04,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:00:04,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:00:04,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 253 [2023-08-27 00:00:04,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:04,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:04,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 253 [2023-08-27 00:00:04,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:04,763 INFO L124 PetriNetUnfolderBase]: 215/356 cut-off events. [2023-08-27 00:00:04,763 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-08-27 00:00:04,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 356 events. 215/356 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1303 event pairs, 69 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 660. Up to 183 conditions per place. [2023-08-27 00:00:04,767 INFO L140 encePairwiseOnDemand]: 249/253 looper letters, 36 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2023-08-27 00:00:04,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 39 transitions, 177 flow [2023-08-27 00:00:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:00:04,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:00:04,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2023-08-27 00:00:04,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032938076416338 [2023-08-27 00:00:04,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2023-08-27 00:00:04,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2023-08-27 00:00:04,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:04,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2023-08-27 00:00:04,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:04,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:04,802 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:04,803 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 54 flow. Second operand 3 states and 382 transitions. [2023-08-27 00:00:04,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 39 transitions, 177 flow [2023-08-27 00:00:04,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 39 transitions, 163 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 00:00:04,808 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 68 flow [2023-08-27 00:00:04,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2023-08-27 00:00:04,817 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2023-08-27 00:00:04,818 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 68 flow [2023-08-27 00:00:04,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:04,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:04,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 00:00:04,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 00:00:04,819 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:00:04,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:04,822 INFO L85 PathProgramCache]: Analyzing trace with hash 15115780, now seen corresponding path program 1 times [2023-08-27 00:00:04,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:04,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617994701] [2023-08-27 00:00:04,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:04,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:04,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:04,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617994701] [2023-08-27 00:00:04,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617994701] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:00:04,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:00:04,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:00:04,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810832462] [2023-08-27 00:00:04,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:00:04,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:00:04,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:04,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:00:04,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:00:04,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 253 [2023-08-27 00:00:04,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:04,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:04,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 253 [2023-08-27 00:00:04,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:04,985 INFO L124 PetriNetUnfolderBase]: 191/322 cut-off events. [2023-08-27 00:00:04,985 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-08-27 00:00:04,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 322 events. 191/322 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1138 event pairs, 135 based on Foata normal form. 20/194 useless extension candidates. Maximal degree in co-relation 308. Up to 322 conditions per place. [2023-08-27 00:00:04,988 INFO L140 encePairwiseOnDemand]: 251/253 looper letters, 20 selfloop transitions, 1 changer transitions 0/21 dead transitions. [2023-08-27 00:00:04,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 21 transitions, 100 flow [2023-08-27 00:00:04,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:00:04,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:00:04,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2023-08-27 00:00:04,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2023-08-27 00:00:04,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2023-08-27 00:00:04,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2023-08-27 00:00:04,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:04,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2023-08-27 00:00:04,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:04,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:04,994 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:04,994 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 68 flow. Second operand 3 states and 363 transitions. [2023-08-27 00:00:04,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 21 transitions, 100 flow [2023-08-27 00:00:04,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 21 transitions, 96 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:00:04,996 INFO L231 Difference]: Finished difference. Result has 24 places, 21 transitions, 56 flow [2023-08-27 00:00:04,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=24, PETRI_TRANSITIONS=21} [2023-08-27 00:00:04,997 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -1 predicate places. [2023-08-27 00:00:04,997 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 21 transitions, 56 flow [2023-08-27 00:00:04,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:04,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:04,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 00:00:04,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 00:00:04,998 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:00:04,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:04,998 INFO L85 PathProgramCache]: Analyzing trace with hash 15115796, now seen corresponding path program 1 times [2023-08-27 00:00:04,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:04,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688676437] [2023-08-27 00:00:04,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:04,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:05,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:05,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:05,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688676437] [2023-08-27 00:00:05,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688676437] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:00:05,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:00:05,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:00:05,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793817357] [2023-08-27 00:00:05,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:00:05,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:00:05,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:05,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:00:05,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:00:05,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 253 [2023-08-27 00:00:05,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:05,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:05,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 253 [2023-08-27 00:00:05,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:05,119 INFO L124 PetriNetUnfolderBase]: 289/480 cut-off events. [2023-08-27 00:00:05,119 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-27 00:00:05,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1043 conditions, 480 events. 289/480 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1936 event pairs, 135 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 1035. Up to 323 conditions per place. [2023-08-27 00:00:05,123 INFO L140 encePairwiseOnDemand]: 249/253 looper letters, 36 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-08-27 00:00:05,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 38 transitions, 175 flow [2023-08-27 00:00:05,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:00:05,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:00:05,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2023-08-27 00:00:05,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5006587615283268 [2023-08-27 00:00:05,125 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 380 transitions. [2023-08-27 00:00:05,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 380 transitions. [2023-08-27 00:00:05,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:05,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 380 transitions. [2023-08-27 00:00:05,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:05,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:05,128 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:05,128 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 56 flow. Second operand 3 states and 380 transitions. [2023-08-27 00:00:05,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 38 transitions, 175 flow [2023-08-27 00:00:05,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 38 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:00:05,130 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 75 flow [2023-08-27 00:00:05,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2023-08-27 00:00:05,131 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-08-27 00:00:05,131 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 75 flow [2023-08-27 00:00:05,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:05,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:05,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 00:00:05,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 00:00:05,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:00:05,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:05,133 INFO L85 PathProgramCache]: Analyzing trace with hash 468622518, now seen corresponding path program 1 times [2023-08-27 00:00:05,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:05,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751610408] [2023-08-27 00:00:05,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:05,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:05,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:05,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:05,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751610408] [2023-08-27 00:00:05,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751610408] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:00:05,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:00:05,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:00:05,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240243274] [2023-08-27 00:00:05,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:00:05,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:00:05,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:05,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:00:05,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:00:05,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 253 [2023-08-27 00:00:05,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:05,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:05,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 253 [2023-08-27 00:00:05,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:05,398 INFO L124 PetriNetUnfolderBase]: 451/724 cut-off events. [2023-08-27 00:00:05,399 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2023-08-27 00:00:05,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1766 conditions, 724 events. 451/724 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3059 event pairs, 149 based on Foata normal form. 0/450 useless extension candidates. Maximal degree in co-relation 1757. Up to 380 conditions per place. [2023-08-27 00:00:05,405 INFO L140 encePairwiseOnDemand]: 249/253 looper letters, 38 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2023-08-27 00:00:05,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 41 transitions, 217 flow [2023-08-27 00:00:05,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:00:05,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:00:05,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2023-08-27 00:00:05,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980237154150198 [2023-08-27 00:00:05,407 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 378 transitions. [2023-08-27 00:00:05,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 378 transitions. [2023-08-27 00:00:05,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:05,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 378 transitions. [2023-08-27 00:00:05,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:05,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:05,411 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:05,411 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 75 flow. Second operand 3 states and 378 transitions. [2023-08-27 00:00:05,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 41 transitions, 217 flow [2023-08-27 00:00:05,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 41 transitions, 209 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:00:05,415 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 93 flow [2023-08-27 00:00:05,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-08-27 00:00:05,417 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-08-27 00:00:05,417 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 93 flow [2023-08-27 00:00:05,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:05,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:05,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 00:00:05,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 00:00:05,418 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:00:05,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:05,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1642396680, now seen corresponding path program 1 times [2023-08-27 00:00:05,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:05,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513339522] [2023-08-27 00:00:05,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:05,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:05,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:05,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:05,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513339522] [2023-08-27 00:00:05,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513339522] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:00:05,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:00:05,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:00:05,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015707851] [2023-08-27 00:00:05,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:00:05,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:00:05,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:05,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:00:05,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:00:05,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 253 [2023-08-27 00:00:05,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:05,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:05,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 253 [2023-08-27 00:00:05,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:05,554 INFO L124 PetriNetUnfolderBase]: 351/586 cut-off events. [2023-08-27 00:00:05,555 INFO L125 PetriNetUnfolderBase]: For 315/315 co-relation queries the response was YES. [2023-08-27 00:00:05,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1555 conditions, 586 events. 351/586 cut-off events. For 315/315 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2415 event pairs, 253 based on Foata normal form. 76/552 useless extension candidates. Maximal degree in co-relation 1543. Up to 586 conditions per place. [2023-08-27 00:00:05,563 INFO L140 encePairwiseOnDemand]: 251/253 looper letters, 22 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-08-27 00:00:05,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 129 flow [2023-08-27 00:00:05,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:00:05,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:00:05,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2023-08-27 00:00:05,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4769433465085639 [2023-08-27 00:00:05,572 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2023-08-27 00:00:05,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2023-08-27 00:00:05,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:05,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2023-08-27 00:00:05,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:05,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:05,576 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:05,576 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 93 flow. Second operand 3 states and 362 transitions. [2023-08-27 00:00:05,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 129 flow [2023-08-27 00:00:05,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 125 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:00:05,579 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 81 flow [2023-08-27 00:00:05,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-08-27 00:00:05,582 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-08-27 00:00:05,582 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 81 flow [2023-08-27 00:00:05,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:05,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:05,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 00:00:05,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 00:00:05,583 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:00:05,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:05,584 INFO L85 PathProgramCache]: Analyzing trace with hash 468590430, now seen corresponding path program 1 times [2023-08-27 00:00:05,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:05,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281242908] [2023-08-27 00:00:05,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:05,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:05,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:05,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281242908] [2023-08-27 00:00:05,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281242908] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:00:05,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111558528] [2023-08-27 00:00:05,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:05,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:05,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:00:05,669 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:00:05,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 00:00:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:05,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:00:05,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:00:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:05,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:00:05,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:05,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111558528] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:00:05,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:00:05,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 00:00:05,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044402813] [2023-08-27 00:00:05,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:00:05,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:00:05,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:05,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:00:05,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:00:05,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 253 [2023-08-27 00:00:05,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 81 flow. Second operand has 7 states, 7 states have (on average 115.42857142857143) internal successors, (808), 7 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:05,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:05,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 253 [2023-08-27 00:00:05,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:06,481 INFO L124 PetriNetUnfolderBase]: 780/1237 cut-off events. [2023-08-27 00:00:06,497 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2023-08-27 00:00:06,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3230 conditions, 1237 events. 780/1237 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5498 event pairs, 140 based on Foata normal form. 0/983 useless extension candidates. Maximal degree in co-relation 3218. Up to 336 conditions per place. [2023-08-27 00:00:06,505 INFO L140 encePairwiseOnDemand]: 249/253 looper letters, 87 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2023-08-27 00:00:06,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 99 transitions, 516 flow [2023-08-27 00:00:06,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:00:06,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:00:06,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 889 transitions. [2023-08-27 00:00:06,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019762845849802 [2023-08-27 00:00:06,509 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 889 transitions. [2023-08-27 00:00:06,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 889 transitions. [2023-08-27 00:00:06,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:06,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 889 transitions. [2023-08-27 00:00:06,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 127.0) internal successors, (889), 7 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) [2023-08-27 00:00:06,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:06,516 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 253.0) internal successors, (2024), 8 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:06,516 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 81 flow. Second operand 7 states and 889 transitions. [2023-08-27 00:00:06,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 99 transitions, 516 flow [2023-08-27 00:00:06,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 99 transitions, 515 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:00:06,520 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 160 flow [2023-08-27 00:00:06,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=160, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2023-08-27 00:00:06,522 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 11 predicate places. [2023-08-27 00:00:06,523 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 160 flow [2023-08-27 00:00:06,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.42857142857143) internal successors, (808), 7 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:06,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:06,523 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 00:00:06,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 00:00:06,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-27 00:00:06,733 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:00:06,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:06,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1641402197, now seen corresponding path program 1 times [2023-08-27 00:00:06,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:06,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766781783] [2023-08-27 00:00:06,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:06,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:06,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:06,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:06,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766781783] [2023-08-27 00:00:06,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766781783] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:00:06,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429897864] [2023-08-27 00:00:06,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:06,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:06,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:00:06,893 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:00:06,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 00:00:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:06,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 00:00:06,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:00:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:06,971 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:00:06,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429897864] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:00:06,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:00:06,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-27 00:00:06,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703356645] [2023-08-27 00:00:06,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:00:06,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:00:06,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:06,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:00:06,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:00:06,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 253 [2023-08-27 00:00:06,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:06,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:06,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 253 [2023-08-27 00:00:06,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:07,165 INFO L124 PetriNetUnfolderBase]: 674/1107 cut-off events. [2023-08-27 00:00:07,166 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2023-08-27 00:00:07,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3223 conditions, 1107 events. 674/1107 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4971 event pairs, 27 based on Foata normal form. 48/1025 useless extension candidates. Maximal degree in co-relation 3208. Up to 625 conditions per place. [2023-08-27 00:00:07,175 INFO L140 encePairwiseOnDemand]: 250/253 looper letters, 64 selfloop transitions, 7 changer transitions 0/71 dead transitions. [2023-08-27 00:00:07,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 71 transitions, 404 flow [2023-08-27 00:00:07,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:00:07,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:00:07,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 632 transitions. [2023-08-27 00:00:07,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49960474308300395 [2023-08-27 00:00:07,178 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 632 transitions. [2023-08-27 00:00:07,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 632 transitions. [2023-08-27 00:00:07,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:07,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 632 transitions. [2023-08-27 00:00:07,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.4) internal successors, (632), 5 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) [2023-08-27 00:00:07,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:07,182 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:07,182 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 160 flow. Second operand 5 states and 632 transitions. [2023-08-27 00:00:07,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 71 transitions, 404 flow [2023-08-27 00:00:07,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 71 transitions, 392 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 00:00:07,203 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 141 flow [2023-08-27 00:00:07,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=141, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-08-27 00:00:07,204 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 12 predicate places. [2023-08-27 00:00:07,204 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 141 flow [2023-08-27 00:00:07,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:07,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:07,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 00:00:07,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 00:00:07,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-08-27 00:00:07,412 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:00:07,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:07,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1642396679, now seen corresponding path program 1 times [2023-08-27 00:00:07,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:07,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041117870] [2023-08-27 00:00:07,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:07,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:07,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:07,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041117870] [2023-08-27 00:00:07,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041117870] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:00:07,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784308853] [2023-08-27 00:00:07,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:07,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:07,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:00:07,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:00:07,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 00:00:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:07,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:00:07,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:00:07,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:00:07,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:00:07,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784308853] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:00:07,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:00:07,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [2] total 3 [2023-08-27 00:00:07,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276336962] [2023-08-27 00:00:07,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:00:07,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:00:07,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:07,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:00:07,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:00:07,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 253 [2023-08-27 00:00:07,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:07,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:07,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 253 [2023-08-27 00:00:07,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:07,743 INFO L124 PetriNetUnfolderBase]: 555/918 cut-off events. [2023-08-27 00:00:07,744 INFO L125 PetriNetUnfolderBase]: For 509/509 co-relation queries the response was YES. [2023-08-27 00:00:07,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2630 conditions, 918 events. 555/918 cut-off events. For 509/509 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4016 event pairs, 375 based on Foata normal form. 0/868 useless extension candidates. Maximal degree in co-relation 2614. Up to 918 conditions per place. [2023-08-27 00:00:07,750 INFO L140 encePairwiseOnDemand]: 251/253 looper letters, 27 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-08-27 00:00:07,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 28 transitions, 193 flow [2023-08-27 00:00:07,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:00:07,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:00:07,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2023-08-27 00:00:07,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2023-08-27 00:00:07,752 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2023-08-27 00:00:07,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2023-08-27 00:00:07,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:07,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2023-08-27 00:00:07,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:07,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:07,755 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:07,755 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 141 flow. Second operand 3 states and 363 transitions. [2023-08-27 00:00:07,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 28 transitions, 193 flow [2023-08-27 00:00:07,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:00:07,759 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 130 flow [2023-08-27 00:00:07,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-08-27 00:00:07,761 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 11 predicate places. [2023-08-27 00:00:07,762 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 130 flow [2023-08-27 00:00:07,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:07,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:07,763 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 00:00:07,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 00:00:07,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:07,969 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:00:07,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:07,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1641403266, now seen corresponding path program 1 times [2023-08-27 00:00:07,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:07,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740741737] [2023-08-27 00:00:07,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:07,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:08,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:08,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:08,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740741737] [2023-08-27 00:00:08,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740741737] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:00:08,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132482090] [2023-08-27 00:00:08,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:08,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:08,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:00:08,049 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:00:08,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 00:00:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:08,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:00:08,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:00:08,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:00:08,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:00:08,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:00:08,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132482090] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:00:08,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:00:08,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-27 00:00:08,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541143113] [2023-08-27 00:00:08,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:00:08,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 00:00:08,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:08,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 00:00:08,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:00:08,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 253 [2023-08-27 00:00:08,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 130 flow. Second operand has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 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) [2023-08-27 00:00:08,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:08,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 253 [2023-08-27 00:00:08,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:08,423 INFO L124 PetriNetUnfolderBase]: 979/1672 cut-off events. [2023-08-27 00:00:08,423 INFO L125 PetriNetUnfolderBase]: For 764/764 co-relation queries the response was YES. [2023-08-27 00:00:08,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4525 conditions, 1672 events. 979/1672 cut-off events. For 764/764 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8232 event pairs, 93 based on Foata normal form. 0/1672 useless extension candidates. Maximal degree in co-relation 4507. Up to 584 conditions per place. [2023-08-27 00:00:08,433 INFO L140 encePairwiseOnDemand]: 249/253 looper letters, 74 selfloop transitions, 9 changer transitions 0/83 dead transitions. [2023-08-27 00:00:08,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 83 transitions, 523 flow [2023-08-27 00:00:08,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:00:08,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:00:08,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 717 transitions. [2023-08-27 00:00:08,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4723320158102767 [2023-08-27 00:00:08,436 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 717 transitions. [2023-08-27 00:00:08,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 717 transitions. [2023-08-27 00:00:08,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:08,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 717 transitions. [2023-08-27 00:00:08,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.5) internal successors, (717), 6 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:08,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 253.0) internal successors, (1771), 7 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:08,441 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 253.0) internal successors, (1771), 7 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:08,441 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 130 flow. Second operand 6 states and 717 transitions. [2023-08-27 00:00:08,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 83 transitions, 523 flow [2023-08-27 00:00:08,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 83 transitions, 522 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:00:08,447 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 193 flow [2023-08-27 00:00:08,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2023-08-27 00:00:08,449 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 15 predicate places. [2023-08-27 00:00:08,449 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 193 flow [2023-08-27 00:00:08,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 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) [2023-08-27 00:00:08,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:08,450 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-27 00:00:08,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 00:00:08,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:08,656 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:00:08,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:08,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1134536852, now seen corresponding path program 2 times [2023-08-27 00:00:08,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:08,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874235848] [2023-08-27 00:00:08,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:08,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:08,741 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:08,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:08,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874235848] [2023-08-27 00:00:08,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874235848] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:00:08,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511471331] [2023-08-27 00:00:08,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:00:08,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:08,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:00:08,743 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:00:08,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 00:00:08,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 00:00:08,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:00:08,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:00:08,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:00:08,945 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 00:00:08,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:00:08,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511471331] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:00:08,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:00:08,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-27 00:00:08,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865821706] [2023-08-27 00:00:08,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:00:08,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:00:08,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:08,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:00:08,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 00:00:08,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 253 [2023-08-27 00:00:08,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:08,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:08,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 253 [2023-08-27 00:00:08,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:09,081 INFO L124 PetriNetUnfolderBase]: 937/1600 cut-off events. [2023-08-27 00:00:09,081 INFO L125 PetriNetUnfolderBase]: For 1268/1268 co-relation queries the response was YES. [2023-08-27 00:00:09,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4598 conditions, 1600 events. 937/1600 cut-off events. For 1268/1268 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8128 event pairs, 651 based on Foata normal form. 30/1630 useless extension candidates. Maximal degree in co-relation 4578. Up to 1600 conditions per place. [2023-08-27 00:00:09,092 INFO L140 encePairwiseOnDemand]: 251/253 looper letters, 31 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-08-27 00:00:09,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 247 flow [2023-08-27 00:00:09,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:00:09,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:00:09,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 361 transitions. [2023-08-27 00:00:09,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756258234519104 [2023-08-27 00:00:09,094 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 361 transitions. [2023-08-27 00:00:09,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 361 transitions. [2023-08-27 00:00:09,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:09,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 361 transitions. [2023-08-27 00:00:09,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:09,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:09,097 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:09,097 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 193 flow. Second operand 3 states and 361 transitions. [2023-08-27 00:00:09,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 247 flow [2023-08-27 00:00:09,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 214 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-27 00:00:09,103 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 152 flow [2023-08-27 00:00:09,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-08-27 00:00:09,103 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2023-08-27 00:00:09,103 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 152 flow [2023-08-27 00:00:09,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:09,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:09,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:00:09,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 00:00:09,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-27 00:00:09,310 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:00:09,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:09,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1710150541, now seen corresponding path program 1 times [2023-08-27 00:00:09,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:09,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107367800] [2023-08-27 00:00:09,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:09,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:09,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:09,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:09,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107367800] [2023-08-27 00:00:09,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107367800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:00:09,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:00:09,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:00:09,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724227637] [2023-08-27 00:00:09,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:00:09,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:00:09,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:09,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:00:09,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:00:09,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 253 [2023-08-27 00:00:09,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:09,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:09,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 253 [2023-08-27 00:00:09,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:09,721 INFO L124 PetriNetUnfolderBase]: 1005/1712 cut-off events. [2023-08-27 00:00:09,722 INFO L125 PetriNetUnfolderBase]: For 733/733 co-relation queries the response was YES. [2023-08-27 00:00:09,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4503 conditions, 1712 events. 1005/1712 cut-off events. For 733/733 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8518 event pairs, 201 based on Foata normal form. 4/1716 useless extension candidates. Maximal degree in co-relation 4488. Up to 1551 conditions per place. [2023-08-27 00:00:09,735 INFO L140 encePairwiseOnDemand]: 248/253 looper letters, 50 selfloop transitions, 6 changer transitions 2/58 dead transitions. [2023-08-27 00:00:09,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 58 transitions, 353 flow [2023-08-27 00:00:09,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:00:09,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:00:09,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 465 transitions. [2023-08-27 00:00:09,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45948616600790515 [2023-08-27 00:00:09,738 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 465 transitions. [2023-08-27 00:00:09,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 465 transitions. [2023-08-27 00:00:09,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:09,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 465 transitions. [2023-08-27 00:00:09,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:09,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:09,741 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:09,741 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 152 flow. Second operand 4 states and 465 transitions. [2023-08-27 00:00:09,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 58 transitions, 353 flow [2023-08-27 00:00:09,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 58 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:00:09,745 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 200 flow [2023-08-27 00:00:09,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2023-08-27 00:00:09,746 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 13 predicate places. [2023-08-27 00:00:09,746 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 200 flow [2023-08-27 00:00:09,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:09,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:09,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:00:09,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 00:00:09,747 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:00:09,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:09,747 INFO L85 PathProgramCache]: Analyzing trace with hash 352367038, now seen corresponding path program 1 times [2023-08-27 00:00:09,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:09,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779438741] [2023-08-27 00:00:09,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:09,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:09,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:09,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:09,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779438741] [2023-08-27 00:00:09,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779438741] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:00:09,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:00:09,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:00:09,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365501365] [2023-08-27 00:00:09,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:00:09,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:00:09,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:09,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:00:09,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:00:09,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 253 [2023-08-27 00:00:09,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:09,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:09,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 253 [2023-08-27 00:00:09,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:09,972 INFO L124 PetriNetUnfolderBase]: 999/1706 cut-off events. [2023-08-27 00:00:09,973 INFO L125 PetriNetUnfolderBase]: For 1415/1415 co-relation queries the response was YES. [2023-08-27 00:00:09,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4828 conditions, 1706 events. 999/1706 cut-off events. For 1415/1415 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8782 event pairs, 113 based on Foata normal form. 6/1712 useless extension candidates. Maximal degree in co-relation 4810. Up to 892 conditions per place. [2023-08-27 00:00:09,984 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 71 selfloop transitions, 9 changer transitions 8/88 dead transitions. [2023-08-27 00:00:09,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 88 transitions, 608 flow [2023-08-27 00:00:09,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:00:09,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:00:09,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 573 transitions. [2023-08-27 00:00:09,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45296442687747035 [2023-08-27 00:00:09,987 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 573 transitions. [2023-08-27 00:00:09,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 573 transitions. [2023-08-27 00:00:09,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:09,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 573 transitions. [2023-08-27 00:00:09,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.6) internal successors, (573), 5 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:09,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:09,991 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:09,991 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 200 flow. Second operand 5 states and 573 transitions. [2023-08-27 00:00:09,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 88 transitions, 608 flow [2023-08-27 00:00:09,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 88 transitions, 608 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 00:00:09,996 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 265 flow [2023-08-27 00:00:09,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=265, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2023-08-27 00:00:09,997 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 19 predicate places. [2023-08-27 00:00:09,997 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 265 flow [2023-08-27 00:00:09,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:09,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:09,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:00:09,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 00:00:09,998 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:00:09,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:09,999 INFO L85 PathProgramCache]: Analyzing trace with hash 218151876, now seen corresponding path program 2 times [2023-08-27 00:00:09,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:09,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550605242] [2023-08-27 00:00:09,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:09,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:10,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:10,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:10,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550605242] [2023-08-27 00:00:10,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550605242] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:00:10,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:00:10,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:00:10,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475697404] [2023-08-27 00:00:10,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:00:10,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:00:10,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:10,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:00:10,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:00:10,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 253 [2023-08-27 00:00:10,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:10,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:10,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 253 [2023-08-27 00:00:10,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:10,225 INFO L124 PetriNetUnfolderBase]: 957/1638 cut-off events. [2023-08-27 00:00:10,225 INFO L125 PetriNetUnfolderBase]: For 1759/1759 co-relation queries the response was YES. [2023-08-27 00:00:10,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5283 conditions, 1638 events. 957/1638 cut-off events. For 1759/1759 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8230 event pairs, 152 based on Foata normal form. 14/1652 useless extension candidates. Maximal degree in co-relation 5261. Up to 1084 conditions per place. [2023-08-27 00:00:10,242 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 38 selfloop transitions, 20 changer transitions 5/63 dead transitions. [2023-08-27 00:00:10,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 63 transitions, 461 flow [2023-08-27 00:00:10,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:00:10,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:00:10,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 569 transitions. [2023-08-27 00:00:10,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.449802371541502 [2023-08-27 00:00:10,244 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 569 transitions. [2023-08-27 00:00:10,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 569 transitions. [2023-08-27 00:00:10,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:10,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 569 transitions. [2023-08-27 00:00:10,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:10,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:10,248 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:10,248 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 265 flow. Second operand 5 states and 569 transitions. [2023-08-27 00:00:10,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 63 transitions, 461 flow [2023-08-27 00:00:10,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 63 transitions, 459 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-27 00:00:10,253 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 317 flow [2023-08-27 00:00:10,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=317, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-08-27 00:00:10,254 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 25 predicate places. [2023-08-27 00:00:10,254 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 317 flow [2023-08-27 00:00:10,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:10,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:10,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:00:10,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 00:00:10,255 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:00:10,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:10,255 INFO L85 PathProgramCache]: Analyzing trace with hash 915332485, now seen corresponding path program 1 times [2023-08-27 00:00:10,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:10,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29700332] [2023-08-27 00:00:10,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:10,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:10,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:10,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:10,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29700332] [2023-08-27 00:00:10,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29700332] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:00:10,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396030589] [2023-08-27 00:00:10,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:10,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:10,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:00:10,713 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:00:10,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 00:00:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:10,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-27 00:00:10,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:00:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:11,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:00:11,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:11,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396030589] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:00:11,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:00:11,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-27 00:00:11,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318044917] [2023-08-27 00:00:11,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:00:11,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 00:00:11,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:11,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 00:00:11,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-08-27 00:00:11,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 253 [2023-08-27 00:00:11,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 317 flow. Second operand has 13 states, 13 states have (on average 98.84615384615384) internal successors, (1285), 13 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:11,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:11,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 253 [2023-08-27 00:00:11,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:11,693 INFO L124 PetriNetUnfolderBase]: 1295/2204 cut-off events. [2023-08-27 00:00:11,694 INFO L125 PetriNetUnfolderBase]: For 3305/3305 co-relation queries the response was YES. [2023-08-27 00:00:11,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7847 conditions, 2204 events. 1295/2204 cut-off events. For 3305/3305 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11841 event pairs, 280 based on Foata normal form. 7/2211 useless extension candidates. Maximal degree in co-relation 7821. Up to 1510 conditions per place. [2023-08-27 00:00:11,711 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 86 selfloop transitions, 24 changer transitions 5/115 dead transitions. [2023-08-27 00:00:11,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 115 transitions, 928 flow [2023-08-27 00:00:11,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 00:00:11,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 00:00:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1045 transitions. [2023-08-27 00:00:11,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41304347826086957 [2023-08-27 00:00:11,714 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1045 transitions. [2023-08-27 00:00:11,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1045 transitions. [2023-08-27 00:00:11,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:11,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1045 transitions. [2023-08-27 00:00:11,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 104.5) internal successors, (1045), 10 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:11,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 253.0) internal successors, (2783), 11 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:11,720 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 253.0) internal successors, (2783), 11 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:11,720 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 317 flow. Second operand 10 states and 1045 transitions. [2023-08-27 00:00:11,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 115 transitions, 928 flow [2023-08-27 00:00:11,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 115 transitions, 902 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-27 00:00:11,728 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 522 flow [2023-08-27 00:00:11,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=522, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2023-08-27 00:00:11,729 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 37 predicate places. [2023-08-27 00:00:11,729 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 522 flow [2023-08-27 00:00:11,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 98.84615384615384) internal successors, (1285), 13 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:11,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:11,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:00:11,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 00:00:11,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:11,935 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:00:11,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:11,935 INFO L85 PathProgramCache]: Analyzing trace with hash 207334108, now seen corresponding path program 1 times [2023-08-27 00:00:11,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:11,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869518294] [2023-08-27 00:00:11,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:11,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:12,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:00:12,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:12,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869518294] [2023-08-27 00:00:12,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869518294] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:00:12,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004293877] [2023-08-27 00:00:12,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:12,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:12,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:00:12,127 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:00:12,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 00:00:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:12,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 00:00:12,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:00:12,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:00:12,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:00:12,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:00:12,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004293877] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:00:12,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:00:12,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2023-08-27 00:00:12,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684040906] [2023-08-27 00:00:12,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:00:12,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 00:00:12,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:12,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 00:00:12,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-27 00:00:12,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 253 [2023-08-27 00:00:12,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 522 flow. Second operand has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:12,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:12,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 253 [2023-08-27 00:00:12,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:12,512 INFO L124 PetriNetUnfolderBase]: 1073/1805 cut-off events. [2023-08-27 00:00:12,512 INFO L125 PetriNetUnfolderBase]: For 4243/4243 co-relation queries the response was YES. [2023-08-27 00:00:12,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7276 conditions, 1805 events. 1073/1805 cut-off events. For 4243/4243 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9241 event pairs, 60 based on Foata normal form. 142/1947 useless extension candidates. Maximal degree in co-relation 7244. Up to 1284 conditions per place. [2023-08-27 00:00:12,526 INFO L140 encePairwiseOnDemand]: 248/253 looper letters, 78 selfloop transitions, 12 changer transitions 0/90 dead transitions. [2023-08-27 00:00:12,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 90 transitions, 897 flow [2023-08-27 00:00:12,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:00:12,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:00:12,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 565 transitions. [2023-08-27 00:00:12,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44664031620553357 [2023-08-27 00:00:12,528 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 565 transitions. [2023-08-27 00:00:12,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 565 transitions. [2023-08-27 00:00:12,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:12,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 565 transitions. [2023-08-27 00:00:12,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:12,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:12,532 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:12,532 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 522 flow. Second operand 5 states and 565 transitions. [2023-08-27 00:00:12,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 90 transitions, 897 flow [2023-08-27 00:00:12,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 90 transitions, 852 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-08-27 00:00:12,545 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 511 flow [2023-08-27 00:00:12,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=511, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2023-08-27 00:00:12,545 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 39 predicate places. [2023-08-27 00:00:12,545 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 511 flow [2023-08-27 00:00:12,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:12,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:12,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:00:12,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 00:00:12,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:12,751 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:00:12,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:12,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1548441915, now seen corresponding path program 2 times [2023-08-27 00:00:12,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:12,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380402284] [2023-08-27 00:00:12,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:12,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:13,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:13,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:13,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380402284] [2023-08-27 00:00:13,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380402284] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:00:13,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646252172] [2023-08-27 00:00:13,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:00:13,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:13,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:00:13,152 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:00:13,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 00:00:13,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:00:13,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:00:13,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 00:00:13,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:00:13,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:13,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:00:13,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:13,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646252172] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:00:13,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:00:13,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-27 00:00:13,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137023400] [2023-08-27 00:00:13,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:00:13,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 00:00:13,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:13,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 00:00:13,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-08-27 00:00:13,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 253 [2023-08-27 00:00:13,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 511 flow. Second operand has 13 states, 13 states have (on average 98.84615384615384) internal successors, (1285), 13 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:13,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:13,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 253 [2023-08-27 00:00:13,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:14,523 INFO L124 PetriNetUnfolderBase]: 2072/3489 cut-off events. [2023-08-27 00:00:14,523 INFO L125 PetriNetUnfolderBase]: For 8007/8007 co-relation queries the response was YES. [2023-08-27 00:00:14,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14230 conditions, 3489 events. 2072/3489 cut-off events. For 8007/8007 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 20610 event pairs, 266 based on Foata normal form. 18/3507 useless extension candidates. Maximal degree in co-relation 14198. Up to 1512 conditions per place. [2023-08-27 00:00:14,553 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 133 selfloop transitions, 77 changer transitions 7/217 dead transitions. [2023-08-27 00:00:14,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 217 transitions, 1896 flow [2023-08-27 00:00:14,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 00:00:14,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 00:00:14,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1579 transitions. [2023-08-27 00:00:14,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4160737812911726 [2023-08-27 00:00:14,557 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1579 transitions. [2023-08-27 00:00:14,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1579 transitions. [2023-08-27 00:00:14,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:14,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1579 transitions. [2023-08-27 00:00:14,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 105.26666666666667) internal successors, (1579), 15 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:14,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 253.0) internal successors, (4048), 16 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:14,566 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 253.0) internal successors, (4048), 16 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:14,567 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 511 flow. Second operand 15 states and 1579 transitions. [2023-08-27 00:00:14,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 217 transitions, 1896 flow [2023-08-27 00:00:14,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 217 transitions, 1866 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 00:00:14,588 INFO L231 Difference]: Finished difference. Result has 82 places, 123 transitions, 1308 flow [2023-08-27 00:00:14,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1308, PETRI_PLACES=82, PETRI_TRANSITIONS=123} [2023-08-27 00:00:14,588 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 57 predicate places. [2023-08-27 00:00:14,588 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 123 transitions, 1308 flow [2023-08-27 00:00:14,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 98.84615384615384) internal successors, (1285), 13 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:14,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:14,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:00:14,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 00:00:14,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 00:00:14,795 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:00:14,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:14,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1718260021, now seen corresponding path program 3 times [2023-08-27 00:00:14,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:14,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503550875] [2023-08-27 00:00:14,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:14,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:15,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:15,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:15,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503550875] [2023-08-27 00:00:15,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503550875] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:00:15,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898953092] [2023-08-27 00:00:15,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 00:00:15,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:15,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:00:15,160 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:00:15,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 00:00:15,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 00:00:15,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:00:15,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 00:00:15,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:00:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:15,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:00:15,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:15,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898953092] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:00:15,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:00:15,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-27 00:00:15,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369528880] [2023-08-27 00:00:15,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:00:15,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 00:00:15,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:15,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 00:00:15,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-08-27 00:00:15,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 253 [2023-08-27 00:00:15,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 123 transitions, 1308 flow. Second operand has 13 states, 13 states have (on average 98.84615384615384) internal successors, (1285), 13 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:15,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:15,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 253 [2023-08-27 00:00:15,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:16,502 INFO L124 PetriNetUnfolderBase]: 3496/5868 cut-off events. [2023-08-27 00:00:16,503 INFO L125 PetriNetUnfolderBase]: For 21081/21081 co-relation queries the response was YES. [2023-08-27 00:00:16,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28148 conditions, 5868 events. 3496/5868 cut-off events. For 21081/21081 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 37985 event pairs, 701 based on Foata normal form. 14/5882 useless extension candidates. Maximal degree in co-relation 28109. Up to 2717 conditions per place. [2023-08-27 00:00:16,559 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 177 selfloop transitions, 98 changer transitions 12/287 dead transitions. [2023-08-27 00:00:16,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 287 transitions, 3448 flow [2023-08-27 00:00:16,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 00:00:16,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 00:00:16,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1248 transitions. [2023-08-27 00:00:16,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41106719367588934 [2023-08-27 00:00:16,570 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1248 transitions. [2023-08-27 00:00:16,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1248 transitions. [2023-08-27 00:00:16,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:16,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1248 transitions. [2023-08-27 00:00:16,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:16,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 253.0) internal successors, (3289), 13 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:16,597 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 253.0) internal successors, (3289), 13 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:16,598 INFO L175 Difference]: Start difference. First operand has 82 places, 123 transitions, 1308 flow. Second operand 12 states and 1248 transitions. [2023-08-27 00:00:16,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 287 transitions, 3448 flow [2023-08-27 00:00:16,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 287 transitions, 3256 flow, removed 85 selfloop flow, removed 3 redundant places. [2023-08-27 00:00:16,657 INFO L231 Difference]: Finished difference. Result has 96 places, 202 transitions, 2472 flow [2023-08-27 00:00:16,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2472, PETRI_PLACES=96, PETRI_TRANSITIONS=202} [2023-08-27 00:00:16,657 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 71 predicate places. [2023-08-27 00:00:16,657 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 202 transitions, 2472 flow [2023-08-27 00:00:16,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 98.84615384615384) internal successors, (1285), 13 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:16,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:16,658 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:00:16,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 00:00:16,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 00:00:16,864 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:00:16,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:16,864 INFO L85 PathProgramCache]: Analyzing trace with hash -156719400, now seen corresponding path program 1 times [2023-08-27 00:00:16,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:16,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881107393] [2023-08-27 00:00:16,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:16,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:16,933 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:00:16,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:16,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881107393] [2023-08-27 00:00:16,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881107393] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:00:16,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805412202] [2023-08-27 00:00:16,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:16,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:16,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:00:16,935 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:00:16,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 00:00:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:17,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 00:00:17,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:00:17,076 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:00:17,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:00:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:00:17,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805412202] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:00:17,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:00:17,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-27 00:00:17,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036007428] [2023-08-27 00:00:17,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:00:17,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 00:00:17,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:17,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 00:00:17,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-27 00:00:17,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 253 [2023-08-27 00:00:17,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 202 transitions, 2472 flow. Second operand has 11 states, 11 states have (on average 109.18181818181819) internal successors, (1201), 11 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:17,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:17,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 253 [2023-08-27 00:00:17,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:18,791 INFO L124 PetriNetUnfolderBase]: 5394/9401 cut-off events. [2023-08-27 00:00:18,791 INFO L125 PetriNetUnfolderBase]: For 59115/59115 co-relation queries the response was YES. [2023-08-27 00:00:18,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49078 conditions, 9401 events. 5394/9401 cut-off events. For 59115/59115 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 69454 event pairs, 237 based on Foata normal form. 252/9653 useless extension candidates. Maximal degree in co-relation 49033. Up to 2276 conditions per place. [2023-08-27 00:00:18,909 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 546 selfloop transitions, 186 changer transitions 11/743 dead transitions. [2023-08-27 00:00:18,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 743 transitions, 10586 flow [2023-08-27 00:00:18,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 00:00:18,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 00:00:18,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1361 transitions. [2023-08-27 00:00:18,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44828722002635046 [2023-08-27 00:00:18,914 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1361 transitions. [2023-08-27 00:00:18,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1361 transitions. [2023-08-27 00:00:18,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:18,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1361 transitions. [2023-08-27 00:00:18,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 113.41666666666667) internal successors, (1361), 12 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:18,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 253.0) internal successors, (3289), 13 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:18,923 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 253.0) internal successors, (3289), 13 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:18,924 INFO L175 Difference]: Start difference. First operand has 96 places, 202 transitions, 2472 flow. Second operand 12 states and 1361 transitions. [2023-08-27 00:00:18,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 743 transitions, 10586 flow [2023-08-27 00:00:19,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 743 transitions, 10040 flow, removed 246 selfloop flow, removed 5 redundant places. [2023-08-27 00:00:19,101 INFO L231 Difference]: Finished difference. Result has 111 places, 364 transitions, 5420 flow [2023-08-27 00:00:19,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5420, PETRI_PLACES=111, PETRI_TRANSITIONS=364} [2023-08-27 00:00:19,102 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 86 predicate places. [2023-08-27 00:00:19,102 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 364 transitions, 5420 flow [2023-08-27 00:00:19,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 109.18181818181819) internal successors, (1201), 11 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:19,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:19,103 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:00:19,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 00:00:19,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 00:00:19,309 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:00:19,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:19,309 INFO L85 PathProgramCache]: Analyzing trace with hash 403365686, now seen corresponding path program 2 times [2023-08-27 00:00:19,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:19,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988080887] [2023-08-27 00:00:19,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:19,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:00:19,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:19,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988080887] [2023-08-27 00:00:19,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988080887] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:00:19,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93548925] [2023-08-27 00:00:19,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:00:19,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:19,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:00:19,468 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:00:19,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 00:00:19,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:00:19,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:00:19,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 00:00:19,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:00:19,631 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:00:19,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:00:19,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:00:19,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93548925] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:00:19,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:00:19,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2023-08-27 00:00:19,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514656931] [2023-08-27 00:00:19,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:00:19,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 00:00:19,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:19,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 00:00:19,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-08-27 00:00:19,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 253 [2023-08-27 00:00:19,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 364 transitions, 5420 flow. Second operand has 10 states, 10 states have (on average 109.6) internal successors, (1096), 10 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:19,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:19,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 253 [2023-08-27 00:00:19,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:21,989 INFO L124 PetriNetUnfolderBase]: 5986/10783 cut-off events. [2023-08-27 00:00:21,989 INFO L125 PetriNetUnfolderBase]: For 104528/104528 co-relation queries the response was YES. [2023-08-27 00:00:22,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68582 conditions, 10783 events. 5986/10783 cut-off events. For 104528/104528 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 85144 event pairs, 584 based on Foata normal form. 176/10959 useless extension candidates. Maximal degree in co-relation 68530. Up to 3107 conditions per place. [2023-08-27 00:00:22,116 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 372 selfloop transitions, 390 changer transitions 0/762 dead transitions. [2023-08-27 00:00:22,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 762 transitions, 12161 flow [2023-08-27 00:00:22,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 00:00:22,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 00:00:22,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1581 transitions. [2023-08-27 00:00:22,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4463579898362507 [2023-08-27 00:00:22,121 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1581 transitions. [2023-08-27 00:00:22,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1581 transitions. [2023-08-27 00:00:22,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:22,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1581 transitions. [2023-08-27 00:00:22,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 112.92857142857143) internal successors, (1581), 14 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:22,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 253.0) internal successors, (3795), 15 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:22,130 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 253.0) internal successors, (3795), 15 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:22,130 INFO L175 Difference]: Start difference. First operand has 111 places, 364 transitions, 5420 flow. Second operand 14 states and 1581 transitions. [2023-08-27 00:00:22,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 762 transitions, 12161 flow [2023-08-27 00:00:22,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 762 transitions, 11877 flow, removed 138 selfloop flow, removed 1 redundant places. [2023-08-27 00:00:22,589 INFO L231 Difference]: Finished difference. Result has 131 places, 540 transitions, 9651 flow [2023-08-27 00:00:22,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=5230, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9651, PETRI_PLACES=131, PETRI_TRANSITIONS=540} [2023-08-27 00:00:22,590 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 106 predicate places. [2023-08-27 00:00:22,590 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 540 transitions, 9651 flow [2023-08-27 00:00:22,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 109.6) internal successors, (1096), 10 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:22,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:22,591 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:00:22,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-27 00:00:22,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:22,793 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:00:22,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:22,794 INFO L85 PathProgramCache]: Analyzing trace with hash 892283909, now seen corresponding path program 3 times [2023-08-27 00:00:22,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:22,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660951599] [2023-08-27 00:00:22,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:22,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:23,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:23,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:23,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660951599] [2023-08-27 00:00:23,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660951599] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:00:23,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604733823] [2023-08-27 00:00:23,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 00:00:23,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:23,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:00:23,321 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:00:23,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 00:00:23,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 00:00:23,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:00:23,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 00:00:23,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:00:23,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:23,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:00:25,223 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:00:25,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604733823] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:00:25,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:00:25,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 15 [2023-08-27 00:00:25,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241008207] [2023-08-27 00:00:25,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:00:25,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 00:00:25,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:25,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 00:00:25,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-08-27 00:00:25,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 253 [2023-08-27 00:00:25,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 540 transitions, 9651 flow. Second operand has 17 states, 17 states have (on average 98.6470588235294) internal successors, (1677), 17 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:25,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:25,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 253 [2023-08-27 00:00:25,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:30,204 INFO L124 PetriNetUnfolderBase]: 7349/13252 cut-off events. [2023-08-27 00:00:30,205 INFO L125 PetriNetUnfolderBase]: For 164208/164208 co-relation queries the response was YES. [2023-08-27 00:00:30,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92108 conditions, 13252 events. 7349/13252 cut-off events. For 164208/164208 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 107683 event pairs, 600 based on Foata normal form. 46/13298 useless extension candidates. Maximal degree in co-relation 92047. Up to 10302 conditions per place. [2023-08-27 00:00:30,336 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 664 selfloop transitions, 213 changer transitions 26/903 dead transitions. [2023-08-27 00:00:30,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 903 transitions, 17150 flow [2023-08-27 00:00:30,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 00:00:30,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 00:00:30,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1981 transitions. [2023-08-27 00:00:30,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41210734345745786 [2023-08-27 00:00:30,341 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1981 transitions. [2023-08-27 00:00:30,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1981 transitions. [2023-08-27 00:00:30,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:30,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1981 transitions. [2023-08-27 00:00:30,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 104.26315789473684) internal successors, (1981), 19 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:30,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 253.0) internal successors, (5060), 20 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:30,352 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 253.0) internal successors, (5060), 20 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:30,352 INFO L175 Difference]: Start difference. First operand has 131 places, 540 transitions, 9651 flow. Second operand 19 states and 1981 transitions. [2023-08-27 00:00:30,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 903 transitions, 17150 flow [2023-08-27 00:00:31,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 903 transitions, 16506 flow, removed 311 selfloop flow, removed 3 redundant places. [2023-08-27 00:00:31,430 INFO L231 Difference]: Finished difference. Result has 158 places, 708 transitions, 13296 flow [2023-08-27 00:00:31,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=9241, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=13296, PETRI_PLACES=158, PETRI_TRANSITIONS=708} [2023-08-27 00:00:31,431 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 133 predicate places. [2023-08-27 00:00:31,431 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 708 transitions, 13296 flow [2023-08-27 00:00:31,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 98.6470588235294) internal successors, (1677), 17 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:31,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:31,432 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:00:31,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 00:00:31,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:31,638 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:00:31,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:31,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1520930629, now seen corresponding path program 4 times [2023-08-27 00:00:31,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:31,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083223846] [2023-08-27 00:00:31,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:31,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:32,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:32,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:32,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083223846] [2023-08-27 00:00:32,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083223846] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:00:32,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291325463] [2023-08-27 00:00:32,107 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 00:00:32,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:32,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:00:32,109 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:00:32,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 00:00:32,297 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 00:00:32,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:00:32,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 00:00:32,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:00:32,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:32,568 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:00:32,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:32,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291325463] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:00:32,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:00:32,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-27 00:00:32,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582589914] [2023-08-27 00:00:32,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:00:32,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 00:00:32,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:32,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 00:00:32,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2023-08-27 00:00:32,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 253 [2023-08-27 00:00:32,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 708 transitions, 13296 flow. Second operand has 19 states, 19 states have (on average 98.26315789473684) internal successors, (1867), 19 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:32,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:32,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 253 [2023-08-27 00:00:32,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:42,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:00:49,856 INFO L124 PetriNetUnfolderBase]: 9701/17509 cut-off events. [2023-08-27 00:00:49,857 INFO L125 PetriNetUnfolderBase]: For 275929/275929 co-relation queries the response was YES. [2023-08-27 00:00:50,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127841 conditions, 17509 events. 9701/17509 cut-off events. For 275929/275929 co-relation queries the response was YES. Maximal size of possible extension queue 1173. Compared 148901 event pairs, 790 based on Foata normal form. 89/17598 useless extension candidates. Maximal degree in co-relation 127768. Up to 8501 conditions per place. [2023-08-27 00:00:50,227 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 568 selfloop transitions, 757 changer transitions 17/1342 dead transitions. [2023-08-27 00:00:50,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 1342 transitions, 27221 flow [2023-08-27 00:00:50,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-27 00:00:50,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-27 00:00:50,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3116 transitions. [2023-08-27 00:00:50,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41054018445322793 [2023-08-27 00:00:50,234 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3116 transitions. [2023-08-27 00:00:50,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3116 transitions. [2023-08-27 00:00:50,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:50,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3116 transitions. [2023-08-27 00:00:50,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 103.86666666666666) internal successors, (3116), 30 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:50,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 253.0) internal successors, (7843), 31 states have internal predecessors, (7843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:50,253 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 253.0) internal successors, (7843), 31 states have internal predecessors, (7843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:50,253 INFO L175 Difference]: Start difference. First operand has 158 places, 708 transitions, 13296 flow. Second operand 30 states and 3116 transitions. [2023-08-27 00:00:50,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 1342 transitions, 27221 flow [2023-08-27 00:00:53,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 1342 transitions, 25901 flow, removed 619 selfloop flow, removed 12 redundant places. [2023-08-27 00:00:53,319 INFO L231 Difference]: Finished difference. Result has 184 places, 1144 transitions, 24207 flow [2023-08-27 00:00:53,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=12291, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=372, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=24207, PETRI_PLACES=184, PETRI_TRANSITIONS=1144} [2023-08-27 00:00:53,324 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 159 predicate places. [2023-08-27 00:00:53,324 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 1144 transitions, 24207 flow [2023-08-27 00:00:53,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 98.26315789473684) internal successors, (1867), 19 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:53,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:53,325 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:00:53,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 00:00:53,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-27 00:00:53,532 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:00:53,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:53,532 INFO L85 PathProgramCache]: Analyzing trace with hash 2092385435, now seen corresponding path program 5 times [2023-08-27 00:00:53,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:53,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721411292] [2023-08-27 00:00:53,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:53,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:53,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:53,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:53,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721411292] [2023-08-27 00:00:53,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721411292] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:00:53,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831572194] [2023-08-27 00:00:53,942 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 00:00:53,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:53,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:00:53,945 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:00:53,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 00:00:54,117 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-27 00:00:54,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:00:54,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 00:00:54,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:00:54,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:54,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:00:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:00:56,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831572194] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:00:56,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:00:56,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 15 [2023-08-27 00:00:56,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133647229] [2023-08-27 00:00:56,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:00:56,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 00:00:56,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:56,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 00:00:56,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-08-27 00:00:56,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 253 [2023-08-27 00:00:56,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 1144 transitions, 24207 flow. Second operand has 17 states, 17 states have (on average 98.52941176470588) internal successors, (1675), 17 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:56,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:56,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 253 [2023-08-27 00:00:56,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:01:07,168 INFO L124 PetriNetUnfolderBase]: 11145/20104 cut-off events. [2023-08-27 00:01:07,168 INFO L125 PetriNetUnfolderBase]: For 343850/343850 co-relation queries the response was YES. [2023-08-27 00:01:07,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154515 conditions, 20104 events. 11145/20104 cut-off events. For 343850/343850 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 174316 event pairs, 698 based on Foata normal form. 48/20152 useless extension candidates. Maximal degree in co-relation 154437. Up to 9957 conditions per place. [2023-08-27 00:01:07,419 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 579 selfloop transitions, 948 changer transitions 16/1543 dead transitions. [2023-08-27 00:01:07,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 1543 transitions, 35077 flow [2023-08-27 00:01:07,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 00:01:07,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 00:01:07,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2479 transitions. [2023-08-27 00:01:07,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40826745718050067 [2023-08-27 00:01:07,423 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2479 transitions. [2023-08-27 00:01:07,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2479 transitions. [2023-08-27 00:01:07,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:01:07,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2479 transitions. [2023-08-27 00:01:07,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 103.29166666666667) internal successors, (2479), 24 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:07,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 253.0) internal successors, (6325), 25 states have internal predecessors, (6325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:07,434 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 253.0) internal successors, (6325), 25 states have internal predecessors, (6325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:07,434 INFO L175 Difference]: Start difference. First operand has 184 places, 1144 transitions, 24207 flow. Second operand 24 states and 2479 transitions. [2023-08-27 00:01:07,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 1543 transitions, 35077 flow [2023-08-27 00:01:12,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 1543 transitions, 32439 flow, removed 1288 selfloop flow, removed 11 redundant places. [2023-08-27 00:01:12,562 INFO L231 Difference]: Finished difference. Result has 205 places, 1418 transitions, 32299 flow [2023-08-27 00:01:12,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=21034, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1090, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=652, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=32299, PETRI_PLACES=205, PETRI_TRANSITIONS=1418} [2023-08-27 00:01:12,565 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 180 predicate places. [2023-08-27 00:01:12,565 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 1418 transitions, 32299 flow [2023-08-27 00:01:12,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 98.52941176470588) internal successors, (1675), 17 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:12,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:01:12,575 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:01:12,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 00:01:12,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:01:12,782 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:01:12,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:01:12,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1968268352, now seen corresponding path program 6 times [2023-08-27 00:01:12,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:01:12,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648331012] [2023-08-27 00:01:12,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:01:12,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:01:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:01:12,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:01:12,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:01:12,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648331012] [2023-08-27 00:01:12,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648331012] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:01:12,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038846142] [2023-08-27 00:01:12,876 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 00:01:12,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:01:12,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:01:12,877 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:01:12,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 00:01:13,017 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 00:01:13,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:01:13,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 00:01:13,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:01:13,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:01:13,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:01:13,164 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:01:13,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038846142] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:01:13,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:01:13,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-27 00:01:13,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168784903] [2023-08-27 00:01:13,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:01:13,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 00:01:13,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:01:13,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 00:01:13,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-27 00:01:13,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 253 [2023-08-27 00:01:13,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 1418 transitions, 32299 flow. Second operand has 11 states, 11 states have (on average 109.27272727272727) internal successors, (1202), 11 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:13,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:01:13,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 253 [2023-08-27 00:01:13,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:01:26,032 INFO L124 PetriNetUnfolderBase]: 13501/24507 cut-off events. [2023-08-27 00:01:26,032 INFO L125 PetriNetUnfolderBase]: For 456762/456762 co-relation queries the response was YES. [2023-08-27 00:01:26,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196428 conditions, 24507 events. 13501/24507 cut-off events. For 456762/456762 co-relation queries the response was YES. Maximal size of possible extension queue 1618. Compared 220224 event pairs, 1250 based on Foata normal form. 518/25025 useless extension candidates. Maximal degree in co-relation 196345. Up to 10347 conditions per place. [2023-08-27 00:01:26,698 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 889 selfloop transitions, 1290 changer transitions 0/2179 dead transitions. [2023-08-27 00:01:26,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 2179 transitions, 51432 flow [2023-08-27 00:01:26,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 00:01:26,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 00:01:26,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1580 transitions. [2023-08-27 00:01:26,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460756634669678 [2023-08-27 00:01:26,731 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1580 transitions. [2023-08-27 00:01:26,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1580 transitions. [2023-08-27 00:01:26,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:01:26,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1580 transitions. [2023-08-27 00:01:26,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 112.85714285714286) internal successors, (1580), 14 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:26,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 253.0) internal successors, (3795), 15 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:26,738 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 253.0) internal successors, (3795), 15 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:26,739 INFO L175 Difference]: Start difference. First operand has 205 places, 1418 transitions, 32299 flow. Second operand 14 states and 1580 transitions. [2023-08-27 00:01:26,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 2179 transitions, 51432 flow [2023-08-27 00:01:35,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 2179 transitions, 49484 flow, removed 959 selfloop flow, removed 7 redundant places. [2023-08-27 00:01:35,076 INFO L231 Difference]: Finished difference. Result has 219 places, 1815 transitions, 45708 flow [2023-08-27 00:01:35,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=30717, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=917, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=45708, PETRI_PLACES=219, PETRI_TRANSITIONS=1815} [2023-08-27 00:01:35,079 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 194 predicate places. [2023-08-27 00:01:35,079 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 1815 transitions, 45708 flow [2023-08-27 00:01:35,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 109.27272727272727) internal successors, (1202), 11 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:35,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:01:35,080 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:01:35,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-27 00:01:35,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:01:35,288 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:01:35,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:01:35,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1339621632, now seen corresponding path program 7 times [2023-08-27 00:01:35,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:01:35,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163968689] [2023-08-27 00:01:35,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:01:35,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:01:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:01:35,375 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:01:35,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:01:35,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163968689] [2023-08-27 00:01:35,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163968689] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:01:35,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038063046] [2023-08-27 00:01:35,375 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 00:01:35,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:01:35,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:01:35,377 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:01:35,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 00:01:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:01:35,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 00:01:35,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:01:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:01:35,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:01:35,571 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:01:35,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038063046] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:01:35,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:01:35,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2023-08-27 00:01:35,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107480087] [2023-08-27 00:01:35,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:01:35,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 00:01:35,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:01:35,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 00:01:35,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-27 00:01:35,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 253 [2023-08-27 00:01:35,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 1815 transitions, 45708 flow. Second operand has 10 states, 10 states have (on average 109.7) internal successors, (1097), 10 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:35,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:01:35,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 253 [2023-08-27 00:01:35,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:01:49,754 INFO L124 PetriNetUnfolderBase]: 13450/24593 cut-off events. [2023-08-27 00:01:49,755 INFO L125 PetriNetUnfolderBase]: For 589533/589533 co-relation queries the response was YES. [2023-08-27 00:01:50,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217808 conditions, 24593 events. 13450/24593 cut-off events. For 589533/589533 co-relation queries the response was YES. Maximal size of possible extension queue 1647. Compared 224350 event pairs, 382 based on Foata normal form. 236/24829 useless extension candidates. Maximal degree in co-relation 217717. Up to 7498 conditions per place. [2023-08-27 00:01:50,408 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 1717 selfloop transitions, 907 changer transitions 0/2624 dead transitions. [2023-08-27 00:01:50,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 2624 transitions, 63843 flow [2023-08-27 00:01:50,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 00:01:50,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 00:01:50,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1686 transitions. [2023-08-27 00:01:50,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4442687747035573 [2023-08-27 00:01:50,410 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1686 transitions. [2023-08-27 00:01:50,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1686 transitions. [2023-08-27 00:01:50,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:01:50,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1686 transitions. [2023-08-27 00:01:50,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 112.4) internal successors, (1686), 15 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:50,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 253.0) internal successors, (4048), 16 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:50,441 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 253.0) internal successors, (4048), 16 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:50,441 INFO L175 Difference]: Start difference. First operand has 219 places, 1815 transitions, 45708 flow. Second operand 15 states and 1686 transitions. [2023-08-27 00:01:50,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 2624 transitions, 63843 flow [2023-08-27 00:01:59,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 2624 transitions, 63568 flow, removed 109 selfloop flow, removed 3 redundant places. [2023-08-27 00:01:59,924 INFO L231 Difference]: Finished difference. Result has 235 places, 1986 transitions, 53438 flow [2023-08-27 00:01:59,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=45146, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1801, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=723, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=982, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=53438, PETRI_PLACES=235, PETRI_TRANSITIONS=1986} [2023-08-27 00:01:59,926 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 210 predicate places. [2023-08-27 00:01:59,926 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 1986 transitions, 53438 flow [2023-08-27 00:01:59,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 109.7) internal successors, (1097), 10 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:59,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:01:59,926 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:01:59,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-27 00:02:00,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-27 00:02:00,133 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:02:00,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:02:00,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1986922399, now seen corresponding path program 8 times [2023-08-27 00:02:00,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:02:00,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515714818] [2023-08-27 00:02:00,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:02:00,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:02:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:02:00,466 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:02:00,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:02:00,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515714818] [2023-08-27 00:02:00,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515714818] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:02:00,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244146015] [2023-08-27 00:02:00,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:02:00,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:02:00,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:02:00,469 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:02:00,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 00:02:00,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:02:00,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:02:00,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 00:02:00,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:02:00,922 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:02:00,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:02:01,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:02:01,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244146015] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:02:01,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:02:01,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 16 [2023-08-27 00:02:01,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904751529] [2023-08-27 00:02:01,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:02:01,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 00:02:01,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:02:01,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 00:02:01,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-08-27 00:02:01,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 253 [2023-08-27 00:02:01,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 1986 transitions, 53438 flow. Second operand has 18 states, 18 states have (on average 98.38888888888889) internal successors, (1771), 18 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:02:01,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:02:01,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 253 [2023-08-27 00:02:01,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:02:25,496 INFO L124 PetriNetUnfolderBase]: 17528/31896 cut-off events. [2023-08-27 00:02:25,496 INFO L125 PetriNetUnfolderBase]: For 903658/903658 co-relation queries the response was YES. [2023-08-27 00:02:25,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301515 conditions, 31896 events. 17528/31896 cut-off events. For 903658/903658 co-relation queries the response was YES. Maximal size of possible extension queue 2110. Compared 297609 event pairs, 1122 based on Foata normal form. 77/31973 useless extension candidates. Maximal degree in co-relation 301419. Up to 14068 conditions per place. [2023-08-27 00:02:25,985 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 942 selfloop transitions, 1956 changer transitions 32/2930 dead transitions. [2023-08-27 00:02:25,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 2930 transitions, 84383 flow [2023-08-27 00:02:25,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-27 00:02:25,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-27 00:02:25,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3087 transitions. [2023-08-27 00:02:25,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4067193675889328 [2023-08-27 00:02:25,989 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3087 transitions. [2023-08-27 00:02:25,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3087 transitions. [2023-08-27 00:02:25,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:02:25,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3087 transitions. [2023-08-27 00:02:25,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 102.9) internal successors, (3087), 30 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:02:25,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 253.0) internal successors, (7843), 31 states have internal predecessors, (7843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:02:26,000 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 253.0) internal successors, (7843), 31 states have internal predecessors, (7843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:02:26,000 INFO L175 Difference]: Start difference. First operand has 235 places, 1986 transitions, 53438 flow. Second operand 30 states and 3087 transitions. [2023-08-27 00:02:26,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 2930 transitions, 84383 flow [2023-08-27 00:02:46,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 2930 transitions, 83905 flow, removed 171 selfloop flow, removed 2 redundant places. [2023-08-27 00:02:46,804 INFO L231 Difference]: Finished difference. Result has 276 places, 2731 transitions, 83658 flow [2023-08-27 00:02:46,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=53217, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1986, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=83658, PETRI_PLACES=276, PETRI_TRANSITIONS=2731} [2023-08-27 00:02:46,806 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 251 predicate places. [2023-08-27 00:02:46,806 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 2731 transitions, 83658 flow [2023-08-27 00:02:46,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 98.38888888888889) internal successors, (1771), 18 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:02:46,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:02:46,807 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:02:46,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-27 00:02:47,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:02:47,015 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:02:47,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:02:47,015 INFO L85 PathProgramCache]: Analyzing trace with hash -336726385, now seen corresponding path program 9 times [2023-08-27 00:02:47,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:02:47,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411995015] [2023-08-27 00:02:47,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:02:47,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:02:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:02:47,420 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:02:47,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:02:47,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411995015] [2023-08-27 00:02:47,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411995015] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:02:47,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852306606] [2023-08-27 00:02:47,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 00:02:47,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:02:47,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:02:47,422 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:02:47,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 00:02:47,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 00:02:47,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:02:47,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 00:02:47,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:02:47,884 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:02:47,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:02:48,286 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:02:48,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852306606] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:02:48,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:02:48,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 16 [2023-08-27 00:02:48,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177384031] [2023-08-27 00:02:48,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:02:48,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 00:02:48,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:02:48,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 00:02:48,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-08-27 00:02:48,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 253 [2023-08-27 00:02:48,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 2731 transitions, 83658 flow. Second operand has 18 states, 18 states have (on average 98.38888888888889) internal successors, (1771), 18 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:02:48,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:02:48,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 253 [2023-08-27 00:02:48,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:03:33,388 INFO L124 PetriNetUnfolderBase]: 20402/37211 cut-off events. [2023-08-27 00:03:33,389 INFO L125 PetriNetUnfolderBase]: For 1222896/1222896 co-relation queries the response was YES. [2023-08-27 00:03:34,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378995 conditions, 37211 events. 20402/37211 cut-off events. For 1222896/1222896 co-relation queries the response was YES. Maximal size of possible extension queue 2600. Compared 356290 event pairs, 1595 based on Foata normal form. 61/37272 useless extension candidates. Maximal degree in co-relation 378885. Up to 18526 conditions per place. [2023-08-27 00:03:34,680 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 1173 selfloop transitions, 2420 changer transitions 45/3638 dead transitions. [2023-08-27 00:03:34,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 3638 transitions, 118489 flow [2023-08-27 00:03:34,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-27 00:03:34,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-27 00:03:34,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2775 transitions. [2023-08-27 00:03:34,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4062362758014932 [2023-08-27 00:03:34,685 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2775 transitions. [2023-08-27 00:03:34,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2775 transitions. [2023-08-27 00:03:34,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:03:34,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2775 transitions. [2023-08-27 00:03:34,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 102.77777777777777) internal successors, (2775), 27 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:03:34,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 253.0) internal successors, (7084), 28 states have internal predecessors, (7084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:03:34,694 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 253.0) internal successors, (7084), 28 states have internal predecessors, (7084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:03:34,694 INFO L175 Difference]: Start difference. First operand has 276 places, 2731 transitions, 83658 flow. Second operand 27 states and 2775 transitions. [2023-08-27 00:03:34,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 3638 transitions, 118489 flow [2023-08-27 00:04:08,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 3638 transitions, 113892 flow, removed 2276 selfloop flow, removed 7 redundant places. [2023-08-27 00:04:08,949 INFO L231 Difference]: Finished difference. Result has 310 places, 3426 transitions, 111929 flow [2023-08-27 00:04:08,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=80936, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1765, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=857, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=111929, PETRI_PLACES=310, PETRI_TRANSITIONS=3426} [2023-08-27 00:04:08,952 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 285 predicate places. [2023-08-27 00:04:08,952 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 3426 transitions, 111929 flow [2023-08-27 00:04:08,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 98.38888888888889) internal successors, (1771), 18 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:04:08,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:04:08,953 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:04:08,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 00:04:09,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:04:09,160 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:04:09,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:04:09,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1400409185, now seen corresponding path program 10 times [2023-08-27 00:04:09,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:04:09,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374882931] [2023-08-27 00:04:09,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:04:09,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:04:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:04:09,240 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:04:09,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:04:09,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374882931] [2023-08-27 00:04:09,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374882931] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:04:09,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:04:09,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 00:04:09,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794755871] [2023-08-27 00:04:09,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:04:09,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:04:09,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:04:09,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:04:09,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:04:09,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 253 [2023-08-27 00:04:09,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 3426 transitions, 111929 flow. Second operand has 5 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:04:09,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:04:09,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 253 [2023-08-27 00:04:09,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:04:48,862 INFO L124 PetriNetUnfolderBase]: 12354/23321 cut-off events. [2023-08-27 00:04:48,863 INFO L125 PetriNetUnfolderBase]: For 822432/822432 co-relation queries the response was YES. [2023-08-27 00:04:49,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249022 conditions, 23321 events. 12354/23321 cut-off events. For 822432/822432 co-relation queries the response was YES. Maximal size of possible extension queue 1413. Compared 213949 event pairs, 3416 based on Foata normal form. 902/24223 useless extension candidates. Maximal degree in co-relation 248910. Up to 11424 conditions per place. [2023-08-27 00:04:49,647 INFO L140 encePairwiseOnDemand]: 250/253 looper letters, 1025 selfloop transitions, 824 changer transitions 425/2274 dead transitions. [2023-08-27 00:04:49,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 2274 transitions, 78766 flow [2023-08-27 00:04:49,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:04:49,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:04:49,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 475 transitions. [2023-08-27 00:04:49,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46936758893280633 [2023-08-27 00:04:49,649 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 475 transitions. [2023-08-27 00:04:49,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 475 transitions. [2023-08-27 00:04:49,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:04:49,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 475 transitions. [2023-08-27 00:04:49,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:04:49,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:04:49,650 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:04:49,650 INFO L175 Difference]: Start difference. First operand has 310 places, 3426 transitions, 111929 flow. Second operand 4 states and 475 transitions. [2023-08-27 00:04:49,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 2274 transitions, 78766 flow [2023-08-27 00:05:07,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 2274 transitions, 75549 flow, removed 1547 selfloop flow, removed 13 redundant places. [2023-08-27 00:05:07,723 INFO L231 Difference]: Finished difference. Result has 294 places, 1725 transitions, 55904 flow [2023-08-27 00:05:07,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=63553, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2034, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=752, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=55904, PETRI_PLACES=294, PETRI_TRANSITIONS=1725} [2023-08-27 00:05:07,725 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 269 predicate places. [2023-08-27 00:05:07,725 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 1725 transitions, 55904 flow [2023-08-27 00:05:07,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:07,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:05:07,726 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:05:07,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-27 00:05:07,726 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:05:07,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:05:07,726 INFO L85 PathProgramCache]: Analyzing trace with hash -380202459, now seen corresponding path program 11 times [2023-08-27 00:05:07,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:05:07,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279714890] [2023-08-27 00:05:07,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:05:07,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:05:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:05:07,769 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:05:07,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:05:07,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279714890] [2023-08-27 00:05:07,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279714890] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:05:07,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711429897] [2023-08-27 00:05:07,770 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 00:05:07,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:05:07,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:05:07,773 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:05:07,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 00:05:07,845 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:05:07,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:05:07,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:05:07,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:05:07,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:05:07,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:05:07,885 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:05:07,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711429897] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:05:07,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:05:07,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-08-27 00:05:07,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100105771] [2023-08-27 00:05:07,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:05:07,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 00:05:07,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:05:07,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 00:05:07,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-08-27 00:05:07,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 253 [2023-08-27 00:05:07,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 1725 transitions, 55904 flow. Second operand has 8 states, 8 states have (on average 112.875) internal successors, (903), 8 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:07,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:05:07,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 253 [2023-08-27 00:05:07,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:05:20,425 INFO L124 PetriNetUnfolderBase]: 8149/15064 cut-off events. [2023-08-27 00:05:20,425 INFO L125 PetriNetUnfolderBase]: For 561209/561209 co-relation queries the response was YES. [2023-08-27 00:05:20,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152962 conditions, 15064 events. 8149/15064 cut-off events. For 561209/561209 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 124721 event pairs, 784 based on Foata normal form. 272/15336 useless extension candidates. Maximal degree in co-relation 152860. Up to 11404 conditions per place. [2023-08-27 00:05:20,879 INFO L140 encePairwiseOnDemand]: 250/253 looper letters, 755 selfloop transitions, 711 changer transitions 22/1488 dead transitions. [2023-08-27 00:05:20,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 1488 transitions, 49768 flow [2023-08-27 00:05:20,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:05:20,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:05:20,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 591 transitions. [2023-08-27 00:05:20,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671936758893281 [2023-08-27 00:05:20,881 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 591 transitions. [2023-08-27 00:05:20,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 591 transitions. [2023-08-27 00:05:20,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:05:20,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 591 transitions. [2023-08-27 00:05:20,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.2) internal successors, (591), 5 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:20,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:20,883 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:20,883 INFO L175 Difference]: Start difference. First operand has 294 places, 1725 transitions, 55904 flow. Second operand 5 states and 591 transitions. [2023-08-27 00:05:20,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 1488 transitions, 49768 flow [2023-08-27 00:05:29,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 1488 transitions, 47675 flow, removed 223 selfloop flow, removed 15 redundant places. [2023-08-27 00:05:29,346 INFO L231 Difference]: Finished difference. Result has 268 places, 1395 transitions, 43751 flow [2023-08-27 00:05:29,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=42747, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=709, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=694, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=43751, PETRI_PLACES=268, PETRI_TRANSITIONS=1395} [2023-08-27 00:05:29,348 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 243 predicate places. [2023-08-27 00:05:29,349 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 1395 transitions, 43751 flow [2023-08-27 00:05:29,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 112.875) internal successors, (903), 8 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:29,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:05:29,349 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:05:29,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-27 00:05:29,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:05:29,555 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:05:29,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:05:29,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1704695308, now seen corresponding path program 12 times [2023-08-27 00:05:29,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:05:29,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97307115] [2023-08-27 00:05:29,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:05:29,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:05:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:05:29,710 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:05:29,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:05:29,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97307115] [2023-08-27 00:05:29,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97307115] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:05:29,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196716114] [2023-08-27 00:05:29,710 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 00:05:29,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:05:29,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:05:29,719 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:05:29,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 00:05:29,812 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 00:05:29,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:05:29,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 00:05:29,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:05:29,942 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:05:29,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:05:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:05:29,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196716114] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:05:29,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:05:29,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-27 00:05:29,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379981550] [2023-08-27 00:05:29,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:05:29,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 00:05:29,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:05:29,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 00:05:29,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-27 00:05:29,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 253 [2023-08-27 00:05:29,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 1395 transitions, 43751 flow. Second operand has 11 states, 11 states have (on average 109.81818181818181) internal successors, (1208), 11 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) [2023-08-27 00:05:29,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:05:29,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 253 [2023-08-27 00:05:29,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:05:40,576 INFO L124 PetriNetUnfolderBase]: 8773/16219 cut-off events. [2023-08-27 00:05:40,577 INFO L125 PetriNetUnfolderBase]: For 539139/539139 co-relation queries the response was YES. [2023-08-27 00:05:40,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163731 conditions, 16219 events. 8773/16219 cut-off events. For 539139/539139 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 135778 event pairs, 1066 based on Foata normal form. 552/16771 useless extension candidates. Maximal degree in co-relation 163636. Up to 13454 conditions per place. [2023-08-27 00:05:41,017 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 1399 selfloop transitions, 214 changer transitions 0/1613 dead transitions. [2023-08-27 00:05:41,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 1613 transitions, 52281 flow [2023-08-27 00:05:41,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 00:05:41,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 00:05:41,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1480 transitions. [2023-08-27 00:05:41,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44998479781088474 [2023-08-27 00:05:41,042 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1480 transitions. [2023-08-27 00:05:41,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1480 transitions. [2023-08-27 00:05:41,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:05:41,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1480 transitions. [2023-08-27 00:05:41,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 113.84615384615384) internal successors, (1480), 13 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:41,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 253.0) internal successors, (3542), 14 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:41,046 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 253.0) internal successors, (3542), 14 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:41,047 INFO L175 Difference]: Start difference. First operand has 268 places, 1395 transitions, 43751 flow. Second operand 13 states and 1480 transitions. [2023-08-27 00:05:41,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 1613 transitions, 52281 flow [2023-08-27 00:05:49,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 1613 transitions, 51273 flow, removed 106 selfloop flow, removed 2 redundant places. [2023-08-27 00:05:49,249 INFO L231 Difference]: Finished difference. Result has 285 places, 1462 transitions, 45849 flow [2023-08-27 00:05:49,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=41715, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=45849, PETRI_PLACES=285, PETRI_TRANSITIONS=1462} [2023-08-27 00:05:49,253 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 260 predicate places. [2023-08-27 00:05:49,254 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 1462 transitions, 45849 flow [2023-08-27 00:05:49,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 109.81818181818181) internal successors, (1208), 11 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) [2023-08-27 00:05:49,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:05:49,254 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:05:49,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-27 00:05:49,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-27 00:05:49,461 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:05:49,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:05:49,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1488054718, now seen corresponding path program 13 times [2023-08-27 00:05:49,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:05:49,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337025815] [2023-08-27 00:05:49,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:05:49,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:05:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:05:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:05:49,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:05:49,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337025815] [2023-08-27 00:05:49,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337025815] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:05:49,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944545937] [2023-08-27 00:05:49,565 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 00:05:49,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:05:49,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:05:49,566 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:05:49,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 00:05:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:05:49,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 00:05:49,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:05:49,712 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:05:49,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:05:49,737 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:05:49,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944545937] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:05:49,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:05:49,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2023-08-27 00:05:49,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179546103] [2023-08-27 00:05:49,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:05:49,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 00:05:49,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:05:49,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 00:05:49,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-27 00:05:49,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 253 [2023-08-27 00:05:49,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 1462 transitions, 45849 flow. Second operand has 10 states, 10 states have (on average 109.7) internal successors, (1097), 10 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:05:49,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:05:49,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 253 [2023-08-27 00:05:49,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:06:00,434 INFO L124 PetriNetUnfolderBase]: 8983/16787 cut-off events. [2023-08-27 00:06:00,434 INFO L125 PetriNetUnfolderBase]: For 599008/599008 co-relation queries the response was YES. [2023-08-27 00:06:00,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176137 conditions, 16787 events. 8983/16787 cut-off events. For 599008/599008 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 143148 event pairs, 442 based on Foata normal form. 54/16841 useless extension candidates. Maximal degree in co-relation 176035. Up to 8782 conditions per place. [2023-08-27 00:06:00,805 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 1442 selfloop transitions, 166 changer transitions 8/1616 dead transitions. [2023-08-27 00:06:00,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 1616 transitions, 51385 flow [2023-08-27 00:06:00,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 00:06:00,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 00:06:00,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1681 transitions. [2023-08-27 00:06:00,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4429512516469038 [2023-08-27 00:06:00,807 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1681 transitions. [2023-08-27 00:06:00,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1681 transitions. [2023-08-27 00:06:00,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:06:00,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1681 transitions. [2023-08-27 00:06:00,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 112.06666666666666) internal successors, (1681), 15 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:00,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 253.0) internal successors, (4048), 16 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:00,811 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 253.0) internal successors, (4048), 16 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:00,811 INFO L175 Difference]: Start difference. First operand has 285 places, 1462 transitions, 45849 flow. Second operand 15 states and 1681 transitions. [2023-08-27 00:06:00,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 1616 transitions, 51385 flow [2023-08-27 00:06:08,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 1616 transitions, 50480 flow, removed 388 selfloop flow, removed 6 redundant places. [2023-08-27 00:06:08,039 INFO L231 Difference]: Finished difference. Result has 297 places, 1473 transitions, 44898 flow [2023-08-27 00:06:08,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=42925, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=44898, PETRI_PLACES=297, PETRI_TRANSITIONS=1473} [2023-08-27 00:06:08,040 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 272 predicate places. [2023-08-27 00:06:08,040 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 1473 transitions, 44898 flow [2023-08-27 00:06:08,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 109.7) internal successors, (1097), 10 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:08,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:06:08,041 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:06:08,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-08-27 00:06:08,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:06:08,241 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:06:08,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:06:08,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1464250904, now seen corresponding path program 14 times [2023-08-27 00:06:08,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:06:08,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320461407] [2023-08-27 00:06:08,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:06:08,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:06:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:06:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:06:08,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:06:08,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320461407] [2023-08-27 00:06:08,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320461407] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:06:08,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660571941] [2023-08-27 00:06:08,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:06:08,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:06:08,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:06:08,293 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:06:08,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-27 00:06:08,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:06:08,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:06:08,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 00:06:08,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:06:08,466 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:06:08,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:06:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:06:08,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660571941] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:06:08,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:06:08,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-27 00:06:08,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312600514] [2023-08-27 00:06:08,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:06:08,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 00:06:08,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:06:08,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 00:06:08,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-27 00:06:08,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 253 [2023-08-27 00:06:08,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 1473 transitions, 44898 flow. Second operand has 11 states, 11 states have (on average 109.36363636363636) internal successors, (1203), 11 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:08,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:06:08,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 253 [2023-08-27 00:06:08,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:06:17,776 INFO L124 PetriNetUnfolderBase]: 9333/17732 cut-off events. [2023-08-27 00:06:17,777 INFO L125 PetriNetUnfolderBase]: For 684363/684363 co-relation queries the response was YES. [2023-08-27 00:06:17,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184991 conditions, 17732 events. 9333/17732 cut-off events. For 684363/684363 co-relation queries the response was YES. Maximal size of possible extension queue 910. Compared 155797 event pairs, 536 based on Foata normal form. 376/18108 useless extension candidates. Maximal degree in co-relation 184886. Up to 5689 conditions per place. [2023-08-27 00:06:18,010 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 1234 selfloop transitions, 381 changer transitions 42/1657 dead transitions. [2023-08-27 00:06:18,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 1657 transitions, 48262 flow [2023-08-27 00:06:18,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 00:06:18,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 00:06:18,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1353 transitions. [2023-08-27 00:06:18,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44565217391304346 [2023-08-27 00:06:18,012 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1353 transitions. [2023-08-27 00:06:18,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1353 transitions. [2023-08-27 00:06:18,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:06:18,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1353 transitions. [2023-08-27 00:06:18,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 112.75) internal successors, (1353), 12 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:18,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 253.0) internal successors, (3289), 13 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:18,015 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 253.0) internal successors, (3289), 13 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:18,015 INFO L175 Difference]: Start difference. First operand has 297 places, 1473 transitions, 44898 flow. Second operand 12 states and 1353 transitions. [2023-08-27 00:06:18,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 1657 transitions, 48262 flow [2023-08-27 00:06:25,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 1657 transitions, 47582 flow, removed 320 selfloop flow, removed 4 redundant places. [2023-08-27 00:06:25,618 INFO L231 Difference]: Finished difference. Result has 310 places, 1310 transitions, 38719 flow [2023-08-27 00:06:25,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=36840, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=325, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=920, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=38719, PETRI_PLACES=310, PETRI_TRANSITIONS=1310} [2023-08-27 00:06:25,620 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 285 predicate places. [2023-08-27 00:06:25,620 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 1310 transitions, 38719 flow [2023-08-27 00:06:25,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 109.36363636363636) internal successors, (1203), 11 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:25,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:06:25,620 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:06:25,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-27 00:06:25,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:06:25,827 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:06:25,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:06:25,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1416075938, now seen corresponding path program 15 times [2023-08-27 00:06:25,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:06:25,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546366015] [2023-08-27 00:06:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:06:25,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:06:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:06:25,899 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:25,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:06:25,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546366015] [2023-08-27 00:06:25,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546366015] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:06:25,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29257258] [2023-08-27 00:06:25,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 00:06:25,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:06:25,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:06:25,901 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:06:25,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-27 00:06:26,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-27 00:06:26,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:06:26,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 00:06:26,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:06:26,071 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:26,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:06:26,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:06:26,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29257258] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:06:26,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:06:26,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2023-08-27 00:06:26,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805845952] [2023-08-27 00:06:26,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:06:26,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 00:06:26,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:06:26,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 00:06:26,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-08-27 00:06:26,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 253 [2023-08-27 00:06:26,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 1310 transitions, 38719 flow. Second operand has 10 states, 10 states have (on average 109.8) internal successors, (1098), 10 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:26,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:06:26,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 253 [2023-08-27 00:06:26,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:06:35,675 INFO L124 PetriNetUnfolderBase]: 8916/16657 cut-off events. [2023-08-27 00:06:35,675 INFO L125 PetriNetUnfolderBase]: For 669927/669927 co-relation queries the response was YES. [2023-08-27 00:06:36,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178431 conditions, 16657 events. 8916/16657 cut-off events. For 669927/669927 co-relation queries the response was YES. Maximal size of possible extension queue 846. Compared 141522 event pairs, 648 based on Foata normal form. 558/17215 useless extension candidates. Maximal degree in co-relation 178321. Up to 7514 conditions per place. [2023-08-27 00:06:36,325 INFO L140 encePairwiseOnDemand]: 248/253 looper letters, 1014 selfloop transitions, 501 changer transitions 0/1515 dead transitions. [2023-08-27 00:06:36,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 1515 transitions, 46452 flow [2023-08-27 00:06:36,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 00:06:36,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 00:06:36,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1250 transitions. [2023-08-27 00:06:36,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44915558749550843 [2023-08-27 00:06:36,329 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1250 transitions. [2023-08-27 00:06:36,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1250 transitions. [2023-08-27 00:06:36,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:06:36,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1250 transitions. [2023-08-27 00:06:36,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.63636363636364) internal successors, (1250), 11 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:36,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:36,350 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:36,350 INFO L175 Difference]: Start difference. First operand has 310 places, 1310 transitions, 38719 flow. Second operand 11 states and 1250 transitions. [2023-08-27 00:06:36,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 1515 transitions, 46452 flow [2023-08-27 00:06:48,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 1515 transitions, 45551 flow, removed 410 selfloop flow, removed 5 redundant places. [2023-08-27 00:06:48,882 INFO L231 Difference]: Finished difference. Result has 319 places, 1341 transitions, 40646 flow [2023-08-27 00:06:48,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=37368, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=453, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=820, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=40646, PETRI_PLACES=319, PETRI_TRANSITIONS=1341} [2023-08-27 00:06:48,884 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 294 predicate places. [2023-08-27 00:06:48,885 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 1341 transitions, 40646 flow [2023-08-27 00:06:48,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 109.8) internal successors, (1098), 10 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:48,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:06:48,885 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:06:48,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-27 00:06:49,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:06:49,090 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:06:49,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:06:49,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1425719374, now seen corresponding path program 4 times [2023-08-27 00:06:49,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:06:49,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874631106] [2023-08-27 00:06:49,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:06:49,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:06:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:06:49,190 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:49,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:06:49,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874631106] [2023-08-27 00:06:49,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874631106] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:06:49,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159873000] [2023-08-27 00:06:49,191 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 00:06:49,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:06:49,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:06:49,197 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:06:49,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-27 00:06:49,283 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 00:06:49,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:06:49,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 00:06:49,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:06:49,383 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:06:49,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:06:49,428 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:06:49,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159873000] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:06:49,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:06:49,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 12 [2023-08-27 00:06:49,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902734865] [2023-08-27 00:06:49,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:06:49,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 00:06:49,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:06:49,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 00:06:49,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-27 00:06:49,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 253 [2023-08-27 00:06:49,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 1341 transitions, 40646 flow. Second operand has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:06:49,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:06:49,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 253 [2023-08-27 00:06:49,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:07:03,522 INFO L124 PetriNetUnfolderBase]: 10667/19790 cut-off events. [2023-08-27 00:07:03,522 INFO L125 PetriNetUnfolderBase]: For 806860/806860 co-relation queries the response was YES. [2023-08-27 00:07:04,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220398 conditions, 19790 events. 10667/19790 cut-off events. For 806860/806860 co-relation queries the response was YES. Maximal size of possible extension queue 1019. Compared 171144 event pairs, 1116 based on Foata normal form. 206/19996 useless extension candidates. Maximal degree in co-relation 220286. Up to 7091 conditions per place. [2023-08-27 00:07:04,242 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 899 selfloop transitions, 1053 changer transitions 0/1952 dead transitions. [2023-08-27 00:07:04,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 1952 transitions, 60184 flow [2023-08-27 00:07:04,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 00:07:04,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 00:07:04,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2599 transitions. [2023-08-27 00:07:04,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44664031620553357 [2023-08-27 00:07:04,248 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2599 transitions. [2023-08-27 00:07:04,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2599 transitions. [2023-08-27 00:07:04,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:07:04,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2599 transitions. [2023-08-27 00:07:04,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 113.0) internal successors, (2599), 23 states have internal predecessors, (2599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:04,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 253.0) internal successors, (6072), 24 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:04,256 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 253.0) internal successors, (6072), 24 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:04,256 INFO L175 Difference]: Start difference. First operand has 319 places, 1341 transitions, 40646 flow. Second operand 23 states and 2599 transitions. [2023-08-27 00:07:04,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 1952 transitions, 60184 flow [2023-08-27 00:07:18,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 1952 transitions, 59857 flow, removed 102 selfloop flow, removed 5 redundant places. [2023-08-27 00:07:18,966 INFO L231 Difference]: Finished difference. Result has 351 places, 1630 transitions, 54788 flow [2023-08-27 00:07:18,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=40316, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=787, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=54788, PETRI_PLACES=351, PETRI_TRANSITIONS=1630} [2023-08-27 00:07:18,968 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 326 predicate places. [2023-08-27 00:07:18,969 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 1630 transitions, 54788 flow [2023-08-27 00:07:18,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:18,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:07:18,969 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:07:18,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-27 00:07:19,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:07:19,170 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:07:19,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:07:19,170 INFO L85 PathProgramCache]: Analyzing trace with hash 829778184, now seen corresponding path program 5 times [2023-08-27 00:07:19,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:07:19,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280955728] [2023-08-27 00:07:19,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:07:19,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:07:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:07:19,250 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:07:19,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:07:19,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280955728] [2023-08-27 00:07:19,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280955728] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:07:19,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222495119] [2023-08-27 00:07:19,251 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 00:07:19,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:07:19,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:07:19,252 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:07:19,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-27 00:07:19,337 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 00:07:19,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:07:19,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 00:07:19,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:07:19,439 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:07:19,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:07:19,477 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:07:19,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222495119] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:07:19,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:07:19,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 12 [2023-08-27 00:07:19,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726178010] [2023-08-27 00:07:19,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:07:19,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 00:07:19,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:07:19,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 00:07:19,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-27 00:07:19,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 253 [2023-08-27 00:07:19,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 1630 transitions, 54788 flow. Second operand has 13 states, 13 states have (on average 109.07692307692308) internal successors, (1418), 13 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:19,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:07:19,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 253 [2023-08-27 00:07:19,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:07:33,090 INFO L124 PetriNetUnfolderBase]: 10405/19351 cut-off events. [2023-08-27 00:07:33,090 INFO L125 PetriNetUnfolderBase]: For 922889/922889 co-relation queries the response was YES. [2023-08-27 00:07:33,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227237 conditions, 19351 events. 10405/19351 cut-off events. For 922889/922889 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 168248 event pairs, 388 based on Foata normal form. 124/19475 useless extension candidates. Maximal degree in co-relation 227111. Up to 5962 conditions per place. [2023-08-27 00:07:33,444 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 1452 selfloop transitions, 695 changer transitions 14/2161 dead transitions. [2023-08-27 00:07:33,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 2161 transitions, 68321 flow [2023-08-27 00:07:33,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-27 00:07:33,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-27 00:07:33,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2804 transitions. [2023-08-27 00:07:33,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4433201581027668 [2023-08-27 00:07:33,448 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2804 transitions. [2023-08-27 00:07:33,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2804 transitions. [2023-08-27 00:07:33,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:07:33,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2804 transitions. [2023-08-27 00:07:33,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 112.16) internal successors, (2804), 25 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:33,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 253.0) internal successors, (6578), 26 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:33,456 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 253.0) internal successors, (6578), 26 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:33,456 INFO L175 Difference]: Start difference. First operand has 351 places, 1630 transitions, 54788 flow. Second operand 25 states and 2804 transitions. [2023-08-27 00:07:33,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 2161 transitions, 68321 flow [2023-08-27 00:07:45,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 2161 transitions, 67438 flow, removed 392 selfloop flow, removed 4 redundant places. [2023-08-27 00:07:45,974 INFO L231 Difference]: Finished difference. Result has 375 places, 1641 transitions, 56300 flow [2023-08-27 00:07:45,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=53310, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=669, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=941, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=56300, PETRI_PLACES=375, PETRI_TRANSITIONS=1641} [2023-08-27 00:07:45,975 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 350 predicate places. [2023-08-27 00:07:45,975 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 1641 transitions, 56300 flow [2023-08-27 00:07:45,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 109.07692307692308) internal successors, (1418), 13 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:07:45,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:07:45,976 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:07:45,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-27 00:07:46,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-08-27 00:07:46,181 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:07:46,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:07:46,182 INFO L85 PathProgramCache]: Analyzing trace with hash -518526167, now seen corresponding path program 16 times [2023-08-27 00:07:46,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:07:46,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246943501] [2023-08-27 00:07:46,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:07:46,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:07:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:07:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:07:46,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:07:46,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246943501] [2023-08-27 00:07:46,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246943501] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:07:46,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520458400] [2023-08-27 00:07:46,607 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 00:07:46,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:07:46,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:07:46,608 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:07:46,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-27 00:07:46,811 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 00:07:46,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:07:46,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-27 00:07:46,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:07:47,161 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:07:47,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:08:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 00:08:12,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520458400] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:08:12,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:08:12,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 23 [2023-08-27 00:08:12,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702745579] [2023-08-27 00:08:12,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:08:12,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 00:08:12,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:08:12,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 00:08:12,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=495, Unknown=3, NotChecked=0, Total=600 [2023-08-27 00:08:12,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 253 [2023-08-27 00:08:12,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 1641 transitions, 56300 flow. Second operand has 25 states, 25 states have (on average 98.04) internal successors, (2451), 25 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:12,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:08:12,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 253 [2023-08-27 00:08:12,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:08:15,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:08:39,602 INFO L124 PetriNetUnfolderBase]: 11542/21535 cut-off events. [2023-08-27 00:08:39,602 INFO L125 PetriNetUnfolderBase]: For 1084921/1084921 co-relation queries the response was YES. [2023-08-27 00:08:40,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261454 conditions, 21535 events. 11542/21535 cut-off events. For 1084921/1084921 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 189245 event pairs, 1192 based on Foata normal form. 25/21560 useless extension candidates. Maximal degree in co-relation 261323. Up to 19237 conditions per place. [2023-08-27 00:08:40,585 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 1675 selfloop transitions, 274 changer transitions 32/1981 dead transitions. [2023-08-27 00:08:40,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 1981 transitions, 69549 flow [2023-08-27 00:08:40,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-27 00:08:40,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-27 00:08:40,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3065 transitions. [2023-08-27 00:08:40,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4038208168642951 [2023-08-27 00:08:40,589 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3065 transitions. [2023-08-27 00:08:40,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3065 transitions. [2023-08-27 00:08:40,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:08:40,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3065 transitions. [2023-08-27 00:08:40,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 102.16666666666667) internal successors, (3065), 30 states have internal predecessors, (3065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:40,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 253.0) internal successors, (7843), 31 states have internal predecessors, (7843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:40,620 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 253.0) internal successors, (7843), 31 states have internal predecessors, (7843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:08:40,620 INFO L175 Difference]: Start difference. First operand has 375 places, 1641 transitions, 56300 flow. Second operand 30 states and 3065 transitions. [2023-08-27 00:08:40,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 1981 transitions, 69549 flow [2023-08-27 00:09:03,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 1981 transitions, 67677 flow, removed 454 selfloop flow, removed 10 redundant places. [2023-08-27 00:09:03,360 INFO L231 Difference]: Finished difference. Result has 404 places, 1821 transitions, 62571 flow [2023-08-27 00:09:03,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=54664, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=62571, PETRI_PLACES=404, PETRI_TRANSITIONS=1821} [2023-08-27 00:09:03,362 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 379 predicate places. [2023-08-27 00:09:03,362 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 1821 transitions, 62571 flow [2023-08-27 00:09:03,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 98.04) internal successors, (2451), 25 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:09:03,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:09:03,363 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:09:03,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-27 00:09:03,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-08-27 00:09:03,564 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:09:03,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:09:03,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1550726559, now seen corresponding path program 17 times [2023-08-27 00:09:03,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:09:03,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193695753] [2023-08-27 00:09:03,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:09:03,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:09:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:09:04,313 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:09:04,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:09:04,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193695753] [2023-08-27 00:09:04,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193695753] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:09:04,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270899311] [2023-08-27 00:09:04,314 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 00:09:04,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:09:04,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:09:04,325 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:09:04,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-27 00:09:04,483 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-27 00:09:04,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:09:04,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 00:09:04,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:09:04,828 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:09:04,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:09:05,311 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:09:05,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270899311] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:09:05,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:09:05,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2023-08-27 00:09:05,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11443735] [2023-08-27 00:09:05,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:09:05,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-27 00:09:05,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:09:05,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-27 00:09:05,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2023-08-27 00:09:05,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 253 [2023-08-27 00:09:05,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 1821 transitions, 62571 flow. Second operand has 28 states, 28 states have (on average 97.85714285714286) internal successors, (2740), 28 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:09:05,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:09:05,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 253 [2023-08-27 00:09:05,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:09:39,137 INFO L124 PetriNetUnfolderBase]: 14076/25788 cut-off events. [2023-08-27 00:09:39,137 INFO L125 PetriNetUnfolderBase]: For 1288778/1288778 co-relation queries the response was YES. [2023-08-27 00:09:40,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310202 conditions, 25788 events. 14076/25788 cut-off events. For 1288778/1288778 co-relation queries the response was YES. Maximal size of possible extension queue 1270. Compared 227537 event pairs, 868 based on Foata normal form. 24/25812 useless extension candidates. Maximal degree in co-relation 310062. Up to 8172 conditions per place. [2023-08-27 00:09:40,521 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 714 selfloop transitions, 1837 changer transitions 51/2602 dead transitions. [2023-08-27 00:09:40,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 2602 transitions, 90566 flow [2023-08-27 00:09:40,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-08-27 00:09:40,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-08-27 00:09:40,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 4987 transitions. [2023-08-27 00:09:40,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40227474388965073 [2023-08-27 00:09:40,527 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 4987 transitions. [2023-08-27 00:09:40,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 4987 transitions. [2023-08-27 00:09:40,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:09:40,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 4987 transitions. [2023-08-27 00:09:40,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 101.77551020408163) internal successors, (4987), 49 states have internal predecessors, (4987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:09:40,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 253.0) internal successors, (12650), 50 states have internal predecessors, (12650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:09:40,543 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 253.0) internal successors, (12650), 50 states have internal predecessors, (12650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:09:40,543 INFO L175 Difference]: Start difference. First operand has 404 places, 1821 transitions, 62571 flow. Second operand 49 states and 4987 transitions. [2023-08-27 00:09:40,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 2602 transitions, 90566 flow [2023-08-27 00:10:07,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 2602 transitions, 89886 flow, removed 332 selfloop flow, removed 5 redundant places. [2023-08-27 00:10:07,538 INFO L231 Difference]: Finished difference. Result has 458 places, 2349 transitions, 86379 flow [2023-08-27 00:10:07,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=61899, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1821, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1369, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=86379, PETRI_PLACES=458, PETRI_TRANSITIONS=2349} [2023-08-27 00:10:07,541 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 433 predicate places. [2023-08-27 00:10:07,541 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 2349 transitions, 86379 flow [2023-08-27 00:10:07,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 97.85714285714286) internal successors, (2740), 28 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:07,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:10:07,542 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:10:07,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-27 00:10:07,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-27 00:10:07,748 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:10:07,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:10:07,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1048385895, now seen corresponding path program 18 times [2023-08-27 00:10:07,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:10:07,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55629565] [2023-08-27 00:10:07,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:10:07,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:10:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:10:08,146 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:10:08,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:10:08,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55629565] [2023-08-27 00:10:08,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55629565] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:10:08,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117654424] [2023-08-27 00:10:08,147 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 00:10:08,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:10:08,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:10:08,148 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:10:08,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-27 00:10:08,506 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-27 00:10:08,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:10:08,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 00:10:08,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:10:08,887 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:10:08,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:10:09,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:10:09,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117654424] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:10:09,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:10:09,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-27 00:10:09,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191338047] [2023-08-27 00:10:09,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:10:09,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 00:10:09,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:10:09,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 00:10:09,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2023-08-27 00:10:09,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 253 [2023-08-27 00:10:09,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 2349 transitions, 86379 flow. Second operand has 22 states, 22 states have (on average 98.45454545454545) internal successors, (2166), 22 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:09,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:10:09,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 253 [2023-08-27 00:10:09,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:10:43,637 INFO L124 PetriNetUnfolderBase]: 15230/28082 cut-off events. [2023-08-27 00:10:43,638 INFO L125 PetriNetUnfolderBase]: For 1497884/1497884 co-relation queries the response was YES. [2023-08-27 00:10:44,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352235 conditions, 28082 events. 15230/28082 cut-off events. For 1497884/1497884 co-relation queries the response was YES. Maximal size of possible extension queue 1457. Compared 253714 event pairs, 1106 based on Foata normal form. 24/28106 useless extension candidates. Maximal degree in co-relation 352083. Up to 18010 conditions per place. [2023-08-27 00:10:45,053 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 1334 selfloop transitions, 1465 changer transitions 24/2823 dead transitions. [2023-08-27 00:10:45,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 2823 transitions, 106530 flow [2023-08-27 00:10:45,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-27 00:10:45,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-27 00:10:45,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2574 transitions. [2023-08-27 00:10:45,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40695652173913044 [2023-08-27 00:10:45,057 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2574 transitions. [2023-08-27 00:10:45,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2574 transitions. [2023-08-27 00:10:45,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:10:45,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2574 transitions. [2023-08-27 00:10:45,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 102.96) internal successors, (2574), 25 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:45,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 253.0) internal successors, (6578), 26 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:45,065 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 253.0) internal successors, (6578), 26 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:10:45,065 INFO L175 Difference]: Start difference. First operand has 458 places, 2349 transitions, 86379 flow. Second operand 25 states and 2574 transitions. [2023-08-27 00:10:45,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 2823 transitions, 106530 flow [2023-08-27 00:11:17,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 2823 transitions, 101927 flow, removed 1643 selfloop flow, removed 14 redundant places. [2023-08-27 00:11:18,023 INFO L231 Difference]: Finished difference. Result has 481 places, 2620 transitions, 97090 flow [2023-08-27 00:11:18,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=82036, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1076, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=97090, PETRI_PLACES=481, PETRI_TRANSITIONS=2620} [2023-08-27 00:11:18,025 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 456 predicate places. [2023-08-27 00:11:18,025 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 2620 transitions, 97090 flow [2023-08-27 00:11:18,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 98.45454545454545) internal successors, (2166), 22 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:18,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:11:18,026 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:11:18,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-27 00:11:18,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:11:18,226 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:11:18,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:11:18,226 INFO L85 PathProgramCache]: Analyzing trace with hash -432431833, now seen corresponding path program 19 times [2023-08-27 00:11:18,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:11:18,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719697722] [2023-08-27 00:11:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:11:18,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:11:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:11:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:11:18,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:11:18,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719697722] [2023-08-27 00:11:18,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719697722] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:11:18,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205673086] [2023-08-27 00:11:18,483 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 00:11:18,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:11:18,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:11:18,485 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:11:18,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-27 00:11:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:11:18,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 00:11:18,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:11:19,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:11:19,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:11:21,299 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse0 (+ c_~j1~0 1))) (and (forall ((~m~0 Int)) (or (<= ~m~0 c_~j1~0) (< .cse0 ~m~0) (let ((.cse1 (* 2 ~m~0))) (< (+ c_~k1~0 (* (div (+ c_~k2~0 .cse1) 4294967296) 4294967296) 1) (+ c_~k2~0 .cse1 .cse2))))) (forall ((~m~0 Int)) (or (let ((.cse3 (* 2 ~m~0))) (<= (+ c_~k2~0 .cse3 .cse2) (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse3) 4294967296) 4294967296)))) (<= ~m~0 c_~j1~0) (< .cse0 ~m~0))))) is different from false [2023-08-27 00:11:21,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2023-08-27 00:11:21,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205673086] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:11:21,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:11:21,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 19 [2023-08-27 00:11:21,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431938671] [2023-08-27 00:11:21,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:11:21,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 00:11:21,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:11:21,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 00:11:21,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=319, Unknown=1, NotChecked=36, Total=420 [2023-08-27 00:11:21,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 253 [2023-08-27 00:11:21,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 2620 transitions, 97090 flow. Second operand has 21 states, 21 states have (on average 98.38095238095238) internal successors, (2066), 21 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:21,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:11:21,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 253 [2023-08-27 00:11:21,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:11:24,358 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse5 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse3 (+ c_~j1~0 1))) (and (or (let ((.cse2 (* c_~m~0 2))) (let ((.cse1 (+ c_~k2~0 .cse2 (* (div (+ c_~k1~0 1) 4294967296) 4294967296))) (.cse0 (* (div (+ c_~k2~0 .cse2) 4294967296) 4294967296))) (and (< (+ .cse0 c_~k1~0) .cse1) (<= .cse1 (+ .cse0 c_~k1~0 1))))) (< c_~j1~0 c_~m~0)) (forall ((~m~0 Int)) (or (<= ~m~0 c_~j1~0) (< .cse3 ~m~0) (let ((.cse4 (* 2 ~m~0))) (< (+ c_~k1~0 (* (div (+ c_~k2~0 .cse4) 4294967296) 4294967296) 1) (+ c_~k2~0 .cse4 .cse5))))) (forall ((~m~0 Int)) (or (let ((.cse6 (* 2 ~m~0))) (<= (+ c_~k2~0 .cse6 .cse5) (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse6) 4294967296) 4294967296)))) (<= ~m~0 c_~j1~0) (< .cse3 ~m~0))) (< 0 c_~m~0) (<= c_~m~0 1) (= (mod (+ (* c_~m~0 4294967295) c_~k2~0) 4294967296) 0) (= (mod (+ 4294967295 c_~k1~0) 4294967296) 0))) is different from false [2023-08-27 00:11:28,771 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse0 (+ c_~j1~0 1))) (and (forall ((~m~0 Int)) (or (<= ~m~0 c_~j1~0) (< .cse0 ~m~0) (let ((.cse1 (* 2 ~m~0))) (< (+ c_~k1~0 (* (div (+ c_~k2~0 .cse1) 4294967296) 4294967296) 1) (+ c_~k2~0 .cse1 .cse2))))) (exists ((~m~0 Int)) (and (<= ~m~0 1) (< 0 ~m~0) (= (mod (+ c_~k2~0 (* 4294967294 ~m~0)) 4294967296) 0))) (forall ((~m~0 Int)) (or (let ((.cse3 (* 2 ~m~0))) (<= (+ c_~k2~0 .cse3 .cse2) (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse3) 4294967296) 4294967296)))) (<= ~m~0 c_~j1~0) (< .cse0 ~m~0))) (= (mod (+ 4294967294 c_~k1~0) 4294967296) 0))) is different from false [2023-08-27 00:11:33,986 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse0 (+ c_~j1~0 1)) (.cse5 (+ (* 4294967296 (div c_~k2~0 4294967296)) c_~k1~0)) (.cse4 (* 4294967296 (div c_~k1~0 4294967296)))) (and (forall ((~m~0 Int)) (or (<= ~m~0 c_~j1~0) (< .cse0 ~m~0) (let ((.cse1 (* 2 ~m~0))) (< (+ c_~k1~0 (* (div (+ c_~k2~0 .cse1) 4294967296) 4294967296) 1) (+ c_~k2~0 .cse1 .cse2))))) (forall ((~m~0 Int)) (or (let ((.cse3 (* 2 ~m~0))) (<= (+ c_~k2~0 .cse3 .cse2) (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse3) 4294967296) 4294967296)))) (<= ~m~0 c_~j1~0) (< .cse0 ~m~0))) (<= (+ c_~k2~0 .cse4) .cse5) (< .cse5 (+ c_~k2~0 .cse4 1)))) is different from false [2023-08-27 00:11:53,762 INFO L124 PetriNetUnfolderBase]: 15640/28870 cut-off events. [2023-08-27 00:11:53,762 INFO L125 PetriNetUnfolderBase]: For 1561673/1561673 co-relation queries the response was YES. [2023-08-27 00:11:54,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363007 conditions, 28870 events. 15640/28870 cut-off events. For 1561673/1561673 co-relation queries the response was YES. Maximal size of possible extension queue 1512. Compared 263017 event pairs, 1760 based on Foata normal form. 11/28881 useless extension candidates. Maximal degree in co-relation 362844. Up to 28074 conditions per place. [2023-08-27 00:11:54,451 INFO L140 encePairwiseOnDemand]: 245/253 looper letters, 2721 selfloop transitions, 120 changer transitions 5/2846 dead transitions. [2023-08-27 00:11:54,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 2846 transitions, 109868 flow [2023-08-27 00:11:54,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 00:11:54,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 00:11:54,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1849 transitions. [2023-08-27 00:11:54,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40601668862538426 [2023-08-27 00:11:54,454 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1849 transitions. [2023-08-27 00:11:54,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1849 transitions. [2023-08-27 00:11:54,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:11:54,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1849 transitions. [2023-08-27 00:11:54,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 102.72222222222223) internal successors, (1849), 18 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:54,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 253.0) internal successors, (4807), 19 states have internal predecessors, (4807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:54,458 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 253.0) internal successors, (4807), 19 states have internal predecessors, (4807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:11:54,458 INFO L175 Difference]: Start difference. First operand has 481 places, 2620 transitions, 97090 flow. Second operand 18 states and 1849 transitions. [2023-08-27 00:11:54,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 2846 transitions, 109868 flow [2023-08-27 00:12:25,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 2846 transitions, 107849 flow, removed 1001 selfloop flow, removed 5 redundant places. [2023-08-27 00:12:25,747 INFO L231 Difference]: Finished difference. Result has 503 places, 2717 transitions, 99160 flow [2023-08-27 00:12:25,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=95119, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=99160, PETRI_PLACES=503, PETRI_TRANSITIONS=2717} [2023-08-27 00:12:25,749 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 478 predicate places. [2023-08-27 00:12:25,749 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 2717 transitions, 99160 flow [2023-08-27 00:12:25,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 98.38095238095238) internal successors, (2066), 21 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:12:25,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:12:25,749 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:12:25,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-27 00:12:25,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-27 00:12:25,950 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 00:12:25,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:12:25,950 INFO L85 PathProgramCache]: Analyzing trace with hash 627772301, now seen corresponding path program 20 times [2023-08-27 00:12:25,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:12:25,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163464519] [2023-08-27 00:12:25,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:12:25,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:12:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:12:26,241 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:12:26,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:12:26,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163464519] [2023-08-27 00:12:26,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163464519] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:12:26,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035052325] [2023-08-27 00:12:26,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:12:26,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:12:26,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:12:26,245 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:12:26,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-27 00:12:26,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:12:26,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:12:26,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 00:12:26,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:12:26,717 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:12:26,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:13:09,404 WARN L234 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 00:13:09,484 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:13:09,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035052325] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:13:09,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:13:09,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 19 [2023-08-27 00:13:09,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894551697] [2023-08-27 00:13:09,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:13:09,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 00:13:09,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:13:09,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 00:13:09,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=332, Unknown=18, NotChecked=0, Total=420 [2023-08-27 00:13:09,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 253 [2023-08-27 00:13:09,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 2717 transitions, 99160 flow. Second operand has 21 states, 21 states have (on average 98.38095238095238) internal successors, (2066), 21 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:13:09,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:13:09,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 253 [2023-08-27 00:13:09,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:13:18,104 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse2 (+ c_~j1~0 1))) (and (forall ((~m~0 Int)) (or (<= ~m~0 c_~j1~0) (let ((.cse0 (* 2 ~m~0))) (<= (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse0) 4294967296) 4294967296)) (+ c_~k2~0 .cse0 .cse1))) (< .cse2 ~m~0))) (< 0 c_~m~0) (forall ((~m~0 Int)) (or (let ((.cse3 (* 2 ~m~0))) (< (+ c_~k2~0 .cse3 .cse1) (+ 3 c_~k1~0 (* (div (+ c_~k2~0 .cse3) 4294967296) 4294967296)))) (<= ~m~0 c_~j1~0) (< .cse2 ~m~0))) (<= c_~m~0 1) (= (mod (+ (* c_~m~0 4294967295) c_~k2~0) 4294967296) 0) (= (mod (+ 4294967295 c_~k1~0) 4294967296) 0) (or (let ((.cse6 (* c_~m~0 2))) (let ((.cse5 (+ c_~k2~0 .cse6 (* (div (+ c_~k1~0 1) 4294967296) 4294967296))) (.cse4 (* (div (+ c_~k2~0 .cse6) 4294967296) 4294967296))) (and (<= (+ .cse4 c_~k1~0 1) .cse5) (< .cse5 (+ .cse4 2 c_~k1~0))))) (< c_~j1~0 c_~m~0)))) is different from false [2023-08-27 00:13:23,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-27 00:13:28,966 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse2 (+ c_~j1~0 1)) (.cse4 (+ c_~k2~0 c_~m~0 (* (div (+ c_~k1~0 1) 4294967296) 4294967296))) (.cse3 (* (div (+ c_~k2~0 c_~m~0) 4294967296) 4294967296))) (and (exists ((~m~0 Int)) (and (<= ~m~0 1) (< 0 ~m~0) (= (mod (+ c_~k2~0 (* 4294967294 ~m~0)) 4294967296) 0))) (forall ((~m~0 Int)) (or (<= ~m~0 c_~j1~0) (let ((.cse0 (* 2 ~m~0))) (<= (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse0) 4294967296) 4294967296)) (+ c_~k2~0 .cse0 .cse1))) (< .cse2 ~m~0))) (<= (+ .cse3 c_~k1~0 1) .cse4) (forall ((~m~0 Int)) (or (let ((.cse5 (* 2 ~m~0))) (< (+ c_~k2~0 .cse5 .cse1) (+ 3 c_~k1~0 (* (div (+ c_~k2~0 .cse5) 4294967296) 4294967296)))) (<= ~m~0 c_~j1~0) (< .cse2 ~m~0))) (< .cse4 (+ .cse3 2 c_~k1~0)) (= (mod (+ 4294967294 c_~k1~0) 4294967296) 0))) is different from false [2023-08-27 00:13:37,760 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse2 (+ c_~j1~0 1)) (.cse4 (+ c_~k2~0 c_~m~0 (* (div (+ c_~k1~0 1) 4294967296) 4294967296))) (.cse3 (* (div (+ c_~k2~0 c_~m~0) 4294967296) 4294967296)) (.cse7 (* 4294967296 (div c_~k2~0 4294967296))) (.cse6 (+ c_~k2~0 (* 4294967296 (div c_~k1~0 4294967296))))) (and (forall ((~m~0 Int)) (or (<= ~m~0 c_~j1~0) (let ((.cse0 (* 2 ~m~0))) (<= (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse0) 4294967296) 4294967296)) (+ c_~k2~0 .cse0 .cse1))) (< .cse2 ~m~0))) (<= (+ .cse3 c_~k1~0 1) .cse4) (forall ((~m~0 Int)) (or (let ((.cse5 (* 2 ~m~0))) (< (+ c_~k2~0 .cse5 .cse1) (+ 3 c_~k1~0 (* (div (+ c_~k2~0 .cse5) 4294967296) 4294967296)))) (<= ~m~0 c_~j1~0) (< .cse2 ~m~0))) (< .cse4 (+ .cse3 2 c_~k1~0)) (< .cse6 (+ .cse7 c_~k1~0 1)) (<= (+ .cse7 c_~k1~0) .cse6))) is different from false [2023-08-27 00:13:39,784 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (* 4294967296 (div (+ 2 c_~k1~0) 4294967296))) (.cse2 (+ c_~j1~0 1)) (.cse5 (* 4294967296 (div c_~k2~0 4294967296))) (.cse4 (+ c_~k2~0 (* 4294967296 (div c_~k1~0 4294967296))))) (and (forall ((~m~0 Int)) (or (<= ~m~0 c_~j1~0) (let ((.cse0 (* 2 ~m~0))) (<= (+ 2 c_~k1~0 (* (div (+ c_~k2~0 .cse0) 4294967296) 4294967296)) (+ c_~k2~0 .cse0 .cse1))) (< .cse2 ~m~0))) (forall ((~m~0 Int)) (or (let ((.cse3 (* 2 ~m~0))) (< (+ c_~k2~0 .cse3 .cse1) (+ 3 c_~k1~0 (* (div (+ c_~k2~0 .cse3) 4294967296) 4294967296)))) (<= ~m~0 c_~j1~0) (< .cse2 ~m~0))) (< .cse4 (+ .cse5 c_~k1~0 1)) (<= (+ .cse5 c_~k1~0) .cse4))) is different from false [2023-08-27 00:13:42,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-27 00:13:44,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-08-27 00:13:54,805 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 [2023-08-27 00:13:54,805 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 00:13:54,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-27 00:13:54,995 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (14 of 15 remaining) [2023-08-27 00:13:55,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-08-27 00:13:55,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-27 00:13:55,201 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 96/253 universal loopers) in iteration 39,while PetriNetUnfolder was constructing finite prefix that currently has 246274 conditions, 18473 events (10634/18472 cut-off events. For 1049940/1049940 co-relation queries the response was YES. Maximal size of possible extension queue 1590. Compared 163324 event pairs, 942 based on Foata normal form. 6/19934 useless extension candidates. Maximal degree in co-relation 246100. Up to 17769 conditions per place.). [2023-08-27 00:13:55,202 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2023-08-27 00:13:55,202 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2023-08-27 00:13:55,202 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2023-08-27 00:13:55,202 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2023-08-27 00:13:55,202 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2023-08-27 00:13:55,202 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2023-08-27 00:13:55,202 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 15 remaining) [2023-08-27 00:13:55,202 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 15 remaining) [2023-08-27 00:13:55,202 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2023-08-27 00:13:55,202 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2023-08-27 00:13:55,202 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2023-08-27 00:13:55,203 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2023-08-27 00:13:55,203 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2023-08-27 00:13:55,203 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2023-08-27 00:13:55,203 INFO L445 BasicCegarLoop]: Path program histogram: [20, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:13:55,206 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 00:13:55,206 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 00:13:55,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 12:13:55 BasicIcfg [2023-08-27 00:13:55,208 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 00:13:55,212 INFO L158 Benchmark]: Toolchain (without parser) took 835543.93ms. Allocated memory was 348.1MB in the beginning and 7.9GB in the end (delta: 7.5GB). Free memory was 324.1MB in the beginning and 4.2GB in the end (delta: -3.9GB). Peak memory consumption was 7.6GB. Max. memory is 16.0GB. [2023-08-27 00:13:55,213 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 348.1MB. Free memory is still 324.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 00:13:55,213 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.51ms. Allocated memory is still 348.1MB. Free memory was 323.7MB in the beginning and 313.1MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 00:13:55,213 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.74ms. Allocated memory is still 348.1MB. Free memory was 313.1MB in the beginning and 311.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 00:13:55,213 INFO L158 Benchmark]: Boogie Preprocessor took 32.95ms. Allocated memory is still 348.1MB. Free memory was 311.4MB in the beginning and 310.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 00:13:55,213 INFO L158 Benchmark]: RCFGBuilder took 427.87ms. Allocated memory is still 348.1MB. Free memory was 310.1MB in the beginning and 295.7MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 00:13:55,214 INFO L158 Benchmark]: TraceAbstraction took 834783.02ms. Allocated memory was 348.1MB in the beginning and 7.9GB in the end (delta: 7.5GB). Free memory was 294.7MB in the beginning and 4.2GB in the end (delta: -3.9GB). Peak memory consumption was 7.6GB. Max. memory is 16.0GB. [2023-08-27 00:13:55,215 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 348.1MB. Free memory is still 324.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 248.51ms. Allocated memory is still 348.1MB. Free memory was 323.7MB in the beginning and 313.1MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 45.74ms. Allocated memory is still 348.1MB. Free memory was 313.1MB in the beginning and 311.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.95ms. Allocated memory is still 348.1MB. Free memory was 311.4MB in the beginning and 310.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 427.87ms. Allocated memory is still 348.1MB. Free memory was 310.1MB in the beginning and 295.7MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 834783.02ms. Allocated memory was 348.1MB in the beginning and 7.9GB in the end (delta: 7.5GB). Free memory was 294.7MB in the beginning and 4.2GB in the end (delta: -3.9GB). Peak memory consumption was 7.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6s, 119 PlacesBefore, 25 PlacesAfterwards, 121 TransitionsBefore, 21 TransitionsAfterwards, 1300 CoEnabledTransitionPairs, 7 FixpointIterations, 63 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 6 ConcurrentYvCompositions, 6 ChoiceCompositions, 121 TotalNumberOfCompositions, 1341 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1341, independent: 1341, independent conditional: 0, independent unconditional: 1341, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 685, independent: 685, independent conditional: 0, independent unconditional: 685, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1341, independent: 656, independent conditional: 0, independent unconditional: 656, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 685, unknown conditional: 0, unknown unconditional: 685] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 37, Positive conditional cache size: 0, Positive unconditional cache size: 37, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 96/253 universal loopers) in iteration 39,while PetriNetUnfolder was constructing finite prefix that currently has 246274 conditions, 18473 events (10634/18472 cut-off events. For 1049940/1049940 co-relation queries the response was YES. Maximal size of possible extension queue 1590. Compared 163324 event pairs, 942 based on Foata normal form. 6/19934 useless extension candidates. Maximal degree in co-relation 246100. Up to 17769 conditions per place.). - TimeoutResultAtElement [Line: 44]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 96/253 universal loopers) in iteration 39,while PetriNetUnfolder was constructing finite prefix that currently has 246274 conditions, 18473 events (10634/18472 cut-off events. For 1049940/1049940 co-relation queries the response was YES. Maximal size of possible extension queue 1590. Compared 163324 event pairs, 942 based on Foata normal form. 6/19934 useless extension candidates. Maximal degree in co-relation 246100. Up to 17769 conditions per place.). - TimeoutResultAtElement [Line: 44]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 96/253 universal loopers) in iteration 39,while PetriNetUnfolder was constructing finite prefix that currently has 246274 conditions, 18473 events (10634/18472 cut-off events. For 1049940/1049940 co-relation queries the response was YES. Maximal size of possible extension queue 1590. Compared 163324 event pairs, 942 based on Foata normal form. 6/19934 useless extension candidates. Maximal degree in co-relation 246100. Up to 17769 conditions per place.). - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 96/253 universal loopers) in iteration 39,while PetriNetUnfolder was constructing finite prefix that currently has 246274 conditions, 18473 events (10634/18472 cut-off events. For 1049940/1049940 co-relation queries the response was YES. Maximal size of possible extension queue 1590. Compared 163324 event pairs, 942 based on Foata normal form. 6/19934 useless extension candidates. Maximal degree in co-relation 246100. Up to 17769 conditions per place.). - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 96/253 universal loopers) in iteration 39,while PetriNetUnfolder was constructing finite prefix that currently has 246274 conditions, 18473 events (10634/18472 cut-off events. For 1049940/1049940 co-relation queries the response was YES. Maximal size of possible extension queue 1590. Compared 163324 event pairs, 942 based on Foata normal form. 6/19934 useless extension candidates. Maximal degree in co-relation 246100. Up to 17769 conditions per place.). - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 96/253 universal loopers) in iteration 39,while PetriNetUnfolder was constructing finite prefix that currently has 246274 conditions, 18473 events (10634/18472 cut-off events. For 1049940/1049940 co-relation queries the response was YES. Maximal size of possible extension queue 1590. Compared 163324 event pairs, 942 based on Foata normal form. 6/19934 useless extension candidates. Maximal degree in co-relation 246100. Up to 17769 conditions per place.). - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 96/253 universal loopers) in iteration 39,while PetriNetUnfolder was constructing finite prefix that currently has 246274 conditions, 18473 events (10634/18472 cut-off events. For 1049940/1049940 co-relation queries the response was YES. Maximal size of possible extension queue 1590. Compared 163324 event pairs, 942 based on Foata normal form. 6/19934 useless extension candidates. Maximal degree in co-relation 246100. Up to 17769 conditions per place.). - TimeoutResultAtElement [Line: 76]: 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 (21states, 96/253 universal loopers) in iteration 39,while PetriNetUnfolder was constructing finite prefix that currently has 246274 conditions, 18473 events (10634/18472 cut-off events. For 1049940/1049940 co-relation queries the response was YES. Maximal size of possible extension queue 1590. Compared 163324 event pairs, 942 based on Foata normal form. 6/19934 useless extension candidates. Maximal degree in co-relation 246100. Up to 17769 conditions per place.). - TimeoutResultAtElement [Line: 75]: 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 (21states, 96/253 universal loopers) in iteration 39,while PetriNetUnfolder was constructing finite prefix that currently has 246274 conditions, 18473 events (10634/18472 cut-off events. For 1049940/1049940 co-relation queries the response was YES. Maximal size of possible extension queue 1590. Compared 163324 event pairs, 942 based on Foata normal form. 6/19934 useless extension candidates. Maximal degree in co-relation 246100. Up to 17769 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 161 locations, 15 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: 834.6s, OverallIterations: 39, TraceHistogramMax: 5, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 730.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 2923 SdHoareTripleChecker+Valid, 36.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2923 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 34.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 595 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 384 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13888 IncrementalHoareTripleChecker+Invalid, 14869 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 384 mSolverCounterUnsat, 0 mSDtfsCounter, 13888 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1300 GetRequests, 588 SyntacticMatches, 65 SemanticMatches, 647 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 4811 ImplicationChecksByTransitivity, 135.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111929occurred in iteration=26, InterpolantAutomatonStates: 510, 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: 0.3s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 88.5s InterpolantComputationTime, 980 NumberOfCodeBlocks, 964 NumberOfCodeBlocksAsserted, 102 NumberOfCheckSat, 1316 ConstructedInterpolants, 20 QuantifiedInterpolants, 21335 SizeOfPredicates, 127 NumberOfNonLiveVariables, 3834 ConjunctsInSsa, 356 ConjunctsInUnsatCore, 96 InterpolantComputations, 12 PerfectInterpolantSequences, 183/625 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