/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/test-easy6.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 02:09:53,333 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 02:09:53,393 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 [2023-08-27 02:09:53,398 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 02:09:53,398 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 02:09:53,425 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 02:09:53,425 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 02:09:53,425 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 02:09:53,426 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 02:09:53,428 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 02:09:53,429 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 02:09:53,429 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 02:09:53,429 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 02:09:53,430 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 02:09:53,430 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 02:09:53,430 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 02:09:53,430 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 02:09:53,431 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 02:09:53,431 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 02:09:53,431 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 02:09:53,431 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 02:09:53,432 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 02:09:53,432 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 02:09:53,432 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 02:09:53,432 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 02:09:53,433 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 02:09:53,433 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 02:09:53,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:09:53,433 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 02:09:53,433 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 02:09:53,434 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 02:09:53,434 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 02:09:53,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 02:09:53,434 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 02:09:53,434 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 02:09:53,434 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 02:09:53,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 02:09:53,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 02:09:53,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 02:09:53,680 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 02:09:53,680 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 02:09:53,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c [2023-08-27 02:09:54,644 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 02:09:54,827 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 02:09:54,828 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c [2023-08-27 02:09:54,834 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3028ed25/05a28356eebc40cdb5368066dcc85fa2/FLAGd5e8146db [2023-08-27 02:09:54,844 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3028ed25/05a28356eebc40cdb5368066dcc85fa2 [2023-08-27 02:09:54,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 02:09:54,847 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 02:09:54,847 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 02:09:54,847 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 02:09:54,849 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 02:09:54,849 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:09:54" (1/1) ... [2023-08-27 02:09:54,850 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@196e5c7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:54, skipping insertion in model container [2023-08-27 02:09:54,850 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:09:54" (1/1) ... [2023-08-27 02:09:54,863 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 02:09:54,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:09:54,971 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 02:09:55,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:09:55,007 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 02:09:55,007 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 02:09:55,012 INFO L206 MainTranslator]: Completed translation [2023-08-27 02:09:55,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:55 WrapperNode [2023-08-27 02:09:55,012 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 02:09:55,014 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 02:09:55,015 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 02:09:55,015 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 02:09:55,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:55" (1/1) ... [2023-08-27 02:09:55,029 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:55" (1/1) ... [2023-08-27 02:09:55,050 INFO L138 Inliner]: procedures = 21, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 133 [2023-08-27 02:09:55,051 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 02:09:55,052 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 02:09:55,052 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 02:09:55,052 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 02:09:55,057 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:55" (1/1) ... [2023-08-27 02:09:55,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:55" (1/1) ... [2023-08-27 02:09:55,064 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:55" (1/1) ... [2023-08-27 02:09:55,065 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:55" (1/1) ... [2023-08-27 02:09:55,074 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:55" (1/1) ... [2023-08-27 02:09:55,076 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:55" (1/1) ... [2023-08-27 02:09:55,076 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:55" (1/1) ... [2023-08-27 02:09:55,077 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:55" (1/1) ... [2023-08-27 02:09:55,081 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 02:09:55,081 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 02:09:55,082 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 02:09:55,082 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 02:09:55,082 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:55" (1/1) ... [2023-08-27 02:09:55,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:09:55,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:09:55,105 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 02:09:55,126 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 02:09:55,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 02:09:55,134 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 02:09:55,135 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 02:09:55,135 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 02:09:55,135 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 02:09:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 02:09:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 02:09:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 02:09:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 02:09:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 02:09:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 02:09:55,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 02:09:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 02:09:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 02:09:55,137 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 02:09:55,217 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 02:09:55,218 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 02:09:55,345 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 02:09:55,384 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 02:09:55,384 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 02:09:55,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:09:55 BoogieIcfgContainer [2023-08-27 02:09:55,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 02:09:55,387 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 02:09:55,387 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 02:09:55,389 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 02:09:55,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 02:09:54" (1/3) ... [2023-08-27 02:09:55,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11223e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:09:55, skipping insertion in model container [2023-08-27 02:09:55,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:09:55" (2/3) ... [2023-08-27 02:09:55,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11223e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:09:55, skipping insertion in model container [2023-08-27 02:09:55,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:09:55" (3/3) ... [2023-08-27 02:09:55,391 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2023-08-27 02:09:55,401 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 02:09:55,401 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 02:09:55,401 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 02:09:55,433 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 02:09:55,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 87 transitions, 190 flow [2023-08-27 02:09:55,492 INFO L124 PetriNetUnfolderBase]: 1/85 cut-off events. [2023-08-27 02:09:55,492 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 02:09:55,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 85 events. 1/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-08-27 02:09:55,494 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 87 transitions, 190 flow [2023-08-27 02:09:55,497 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 76 transitions, 164 flow [2023-08-27 02:09:55,499 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 02:09:55,504 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 76 transitions, 164 flow [2023-08-27 02:09:55,505 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 76 transitions, 164 flow [2023-08-27 02:09:55,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 76 transitions, 164 flow [2023-08-27 02:09:55,519 INFO L124 PetriNetUnfolderBase]: 1/76 cut-off events. [2023-08-27 02:09:55,519 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 02:09:55,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 76 events. 1/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-08-27 02:09:55,520 INFO L119 LiptonReduction]: Number of co-enabled transitions 900 [2023-08-27 02:09:56,914 INFO L134 LiptonReduction]: Checked pairs total: 5750 [2023-08-27 02:09:56,915 INFO L136 LiptonReduction]: Total number of compositions: 54 [2023-08-27 02:09:56,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 02:09:56,928 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;@3dc2a310, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 02:09:56,928 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-27 02:09:56,930 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 02:09:56,930 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-27 02:09:56,930 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 02:09:56,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:56,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 02:09:56,931 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:56,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:56,934 INFO L85 PathProgramCache]: Analyzing trace with hash 11639393, now seen corresponding path program 1 times [2023-08-27 02:09:56,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:56,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438757901] [2023-08-27 02:09:56,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:56,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:57,100 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 02:09:57,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:57,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438757901] [2023-08-27 02:09:57,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438757901] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:57,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:57,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:09:57,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099697819] [2023-08-27 02:09:57,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:57,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:09:57,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:57,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:09:57,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:09:57,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 141 [2023-08-27 02:09:57,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 02:09:57,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:57,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 141 [2023-08-27 02:09:57,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:57,277 INFO L124 PetriNetUnfolderBase]: 301/615 cut-off events. [2023-08-27 02:09:57,277 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-27 02:09:57,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 615 events. 301/615 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3136 event pairs, 127 based on Foata normal form. 0/516 useless extension candidates. Maximal degree in co-relation 1095. Up to 339 conditions per place. [2023-08-27 02:09:57,283 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 36 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-08-27 02:09:57,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 185 flow [2023-08-27 02:09:57,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:09:57,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:09:57,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2023-08-27 02:09:57,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2023-08-27 02:09:57,295 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2023-08-27 02:09:57,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2023-08-27 02:09:57,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:57,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2023-08-27 02:09:57,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:09:57,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 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 02:09:57,305 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 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 02:09:57,306 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 82 flow. Second operand 3 states and 239 transitions. [2023-08-27 02:09:57,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 185 flow [2023-08-27 02:09:57,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 175 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 02:09:57,311 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 87 flow [2023-08-27 02:09:57,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2023-08-27 02:09:57,315 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-08-27 02:09:57,315 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 87 flow [2023-08-27 02:09:57,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 02:09:57,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:57,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 02:09:57,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 02:09:57,316 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:57,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:57,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1697047311, now seen corresponding path program 1 times [2023-08-27 02:09:57,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:57,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209393940] [2023-08-27 02:09:57,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:57,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:57,404 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 02:09:57,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:57,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209393940] [2023-08-27 02:09:57,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209393940] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:57,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:57,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:09:57,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037401808] [2023-08-27 02:09:57,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:57,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:09:57,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:57,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:09:57,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:09:57,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 141 [2023-08-27 02:09:57,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 02:09:57,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:57,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 141 [2023-08-27 02:09:57,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:57,483 INFO L124 PetriNetUnfolderBase]: 281/582 cut-off events. [2023-08-27 02:09:57,484 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2023-08-27 02:09:57,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 582 events. 281/582 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3030 event pairs, 107 based on Foata normal form. 0/499 useless extension candidates. Maximal degree in co-relation 396. Up to 339 conditions per place. [2023-08-27 02:09:57,489 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 36 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-08-27 02:09:57,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 194 flow [2023-08-27 02:09:57,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:09:57,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:09:57,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2023-08-27 02:09:57,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2023-08-27 02:09:57,493 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2023-08-27 02:09:57,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2023-08-27 02:09:57,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:57,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2023-08-27 02:09:57,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:09:57,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 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 02:09:57,497 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 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 02:09:57,497 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 87 flow. Second operand 3 states and 239 transitions. [2023-08-27 02:09:57,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 194 flow [2023-08-27 02:09:57,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:09:57,499 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 94 flow [2023-08-27 02:09:57,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-08-27 02:09:57,500 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-27 02:09:57,500 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 94 flow [2023-08-27 02:09:57,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 02:09:57,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:57,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:57,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 02:09:57,503 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:57,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:57,505 INFO L85 PathProgramCache]: Analyzing trace with hash -677361917, now seen corresponding path program 1 times [2023-08-27 02:09:57,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:57,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053670481] [2023-08-27 02:09:57,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:57,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:57,571 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 02:09:57,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:57,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053670481] [2023-08-27 02:09:57,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053670481] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:57,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:57,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:09:57,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860374783] [2023-08-27 02:09:57,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:57,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:09:57,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:57,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:09:57,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:09:57,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 141 [2023-08-27 02:09:57,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 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 02:09:57,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:57,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 141 [2023-08-27 02:09:57,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:57,716 INFO L124 PetriNetUnfolderBase]: 441/895 cut-off events. [2023-08-27 02:09:57,716 INFO L125 PetriNetUnfolderBase]: For 132/133 co-relation queries the response was YES. [2023-08-27 02:09:57,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1885 conditions, 895 events. 441/895 cut-off events. For 132/133 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4901 event pairs, 95 based on Foata normal form. 0/802 useless extension candidates. Maximal degree in co-relation 465. Up to 270 conditions per place. [2023-08-27 02:09:57,721 INFO L140 encePairwiseOnDemand]: 132/141 looper letters, 63 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2023-08-27 02:09:57,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 81 transitions, 358 flow [2023-08-27 02:09:57,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:09:57,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:09:57,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 503 transitions. [2023-08-27 02:09:57,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096251266464032 [2023-08-27 02:09:57,723 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 503 transitions. [2023-08-27 02:09:57,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 503 transitions. [2023-08-27 02:09:57,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:57,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 503 transitions. [2023-08-27 02:09:57,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 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 02:09:57,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 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 02:09:57,726 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 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 02:09:57,727 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 94 flow. Second operand 7 states and 503 transitions. [2023-08-27 02:09:57,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 81 transitions, 358 flow [2023-08-27 02:09:57,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 81 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:09:57,729 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 159 flow [2023-08-27 02:09:57,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-08-27 02:09:57,731 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2023-08-27 02:09:57,731 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 159 flow [2023-08-27 02:09:57,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 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 02:09:57,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:57,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:57,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 02:09:57,734 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:57,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:57,735 INFO L85 PathProgramCache]: Analyzing trace with hash -404899936, now seen corresponding path program 1 times [2023-08-27 02:09:57,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:57,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145597446] [2023-08-27 02:09:57,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:57,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:57,790 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 02:09:57,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:57,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145597446] [2023-08-27 02:09:57,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145597446] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:57,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:57,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:09:57,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024093598] [2023-08-27 02:09:57,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:57,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:09:57,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:57,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:09:57,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:09:57,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 141 [2023-08-27 02:09:57,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 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 02:09:57,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:57,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 141 [2023-08-27 02:09:57,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:57,945 INFO L124 PetriNetUnfolderBase]: 424/864 cut-off events. [2023-08-27 02:09:57,945 INFO L125 PetriNetUnfolderBase]: For 487/488 co-relation queries the response was YES. [2023-08-27 02:09:57,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2064 conditions, 864 events. 424/864 cut-off events. For 487/488 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4655 event pairs, 24 based on Foata normal form. 13/789 useless extension candidates. Maximal degree in co-relation 1726. Up to 303 conditions per place. [2023-08-27 02:09:57,948 INFO L140 encePairwiseOnDemand]: 132/141 looper letters, 65 selfloop transitions, 14 changer transitions 0/85 dead transitions. [2023-08-27 02:09:57,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 85 transitions, 426 flow [2023-08-27 02:09:57,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:09:57,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:09:57,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 506 transitions. [2023-08-27 02:09:57,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126646403242148 [2023-08-27 02:09:57,950 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 506 transitions. [2023-08-27 02:09:57,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 506 transitions. [2023-08-27 02:09:57,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:57,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 506 transitions. [2023-08-27 02:09:57,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 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 02:09:57,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 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 02:09:57,953 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 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 02:09:57,953 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 159 flow. Second operand 7 states and 506 transitions. [2023-08-27 02:09:57,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 85 transitions, 426 flow [2023-08-27 02:09:57,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 85 transitions, 401 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 02:09:57,956 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 184 flow [2023-08-27 02:09:57,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=184, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2023-08-27 02:09:57,957 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2023-08-27 02:09:57,957 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 184 flow [2023-08-27 02:09:57,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 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 02:09:57,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:57,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:57,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 02:09:57,958 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:57,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:57,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1840568342, now seen corresponding path program 1 times [2023-08-27 02:09:57,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:57,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877810799] [2023-08-27 02:09:57,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:57,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:58,018 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 02:09:58,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:58,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877810799] [2023-08-27 02:09:58,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877810799] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:58,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:58,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:09:58,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540270007] [2023-08-27 02:09:58,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:58,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:09:58,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:58,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:09:58,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:09:58,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 141 [2023-08-27 02:09:58,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 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 02:09:58,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:58,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 141 [2023-08-27 02:09:58,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:58,145 INFO L124 PetriNetUnfolderBase]: 559/1147 cut-off events. [2023-08-27 02:09:58,146 INFO L125 PetriNetUnfolderBase]: For 604/604 co-relation queries the response was YES. [2023-08-27 02:09:58,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2707 conditions, 1147 events. 559/1147 cut-off events. For 604/604 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6698 event pairs, 67 based on Foata normal form. 0/1029 useless extension candidates. Maximal degree in co-relation 2124. Up to 348 conditions per place. [2023-08-27 02:09:58,151 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 64 selfloop transitions, 18 changer transitions 0/88 dead transitions. [2023-08-27 02:09:58,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 88 transitions, 462 flow [2023-08-27 02:09:58,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:09:58,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:09:58,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 503 transitions. [2023-08-27 02:09:58,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096251266464032 [2023-08-27 02:09:58,152 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 503 transitions. [2023-08-27 02:09:58,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 503 transitions. [2023-08-27 02:09:58,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:58,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 503 transitions. [2023-08-27 02:09:58,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 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 02:09:58,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 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 02:09:58,156 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 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 02:09:58,156 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 184 flow. Second operand 7 states and 503 transitions. [2023-08-27 02:09:58,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 88 transitions, 462 flow [2023-08-27 02:09:58,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 88 transitions, 408 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-08-27 02:09:58,161 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 240 flow [2023-08-27 02:09:58,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-08-27 02:09:58,162 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2023-08-27 02:09:58,162 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 240 flow [2023-08-27 02:09:58,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 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 02:09:58,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:58,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:58,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 02:09:58,163 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:58,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:58,163 INFO L85 PathProgramCache]: Analyzing trace with hash -676868069, now seen corresponding path program 1 times [2023-08-27 02:09:58,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:58,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964639705] [2023-08-27 02:09:58,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:58,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:58,193 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 02:09:58,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:58,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964639705] [2023-08-27 02:09:58,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964639705] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:58,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:58,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:09:58,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642262906] [2023-08-27 02:09:58,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:58,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:09:58,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:58,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:09:58,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:09:58,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 141 [2023-08-27 02:09:58,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 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 02:09:58,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:58,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 141 [2023-08-27 02:09:58,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:58,311 INFO L124 PetriNetUnfolderBase]: 542/1108 cut-off events. [2023-08-27 02:09:58,311 INFO L125 PetriNetUnfolderBase]: For 727/729 co-relation queries the response was YES. [2023-08-27 02:09:58,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2722 conditions, 1108 events. 542/1108 cut-off events. For 727/729 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6463 event pairs, 170 based on Foata normal form. 2/1006 useless extension candidates. Maximal degree in co-relation 1469. Up to 468 conditions per place. [2023-08-27 02:09:58,316 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 65 selfloop transitions, 16 changer transitions 0/87 dead transitions. [2023-08-27 02:09:58,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 87 transitions, 477 flow [2023-08-27 02:09:58,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:09:58,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:09:58,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 500 transitions. [2023-08-27 02:09:58,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5065856129685917 [2023-08-27 02:09:58,317 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 500 transitions. [2023-08-27 02:09:58,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 500 transitions. [2023-08-27 02:09:58,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:58,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 500 transitions. [2023-08-27 02:09:58,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.42857142857143) internal successors, (500), 7 states have internal predecessors, (500), 0 states have call successors, (0), 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 02:09:58,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 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 02:09:58,320 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 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 02:09:58,320 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 240 flow. Second operand 7 states and 500 transitions. [2023-08-27 02:09:58,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 87 transitions, 477 flow [2023-08-27 02:09:58,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 87 transitions, 477 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 02:09:58,323 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 267 flow [2023-08-27 02:09:58,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=267, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2023-08-27 02:09:58,323 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-08-27 02:09:58,323 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 267 flow [2023-08-27 02:09:58,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 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 02:09:58,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:58,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:58,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 02:09:58,324 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:58,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:58,324 INFO L85 PathProgramCache]: Analyzing trace with hash -476853759, now seen corresponding path program 1 times [2023-08-27 02:09:58,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:58,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817650082] [2023-08-27 02:09:58,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:58,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:58,345 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 02:09:58,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:58,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817650082] [2023-08-27 02:09:58,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817650082] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:58,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:58,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:09:58,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514600773] [2023-08-27 02:09:58,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:58,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:09:58,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:58,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:09:58,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:09:58,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 141 [2023-08-27 02:09:58,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 02:09:58,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:58,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 141 [2023-08-27 02:09:58,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:58,428 INFO L124 PetriNetUnfolderBase]: 434/851 cut-off events. [2023-08-27 02:09:58,428 INFO L125 PetriNetUnfolderBase]: For 1116/1129 co-relation queries the response was YES. [2023-08-27 02:09:58,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2369 conditions, 851 events. 434/851 cut-off events. For 1116/1129 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4393 event pairs, 198 based on Foata normal form. 13/786 useless extension candidates. Maximal degree in co-relation 1273. Up to 529 conditions per place. [2023-08-27 02:09:58,431 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 55 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-08-27 02:09:58,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 463 flow [2023-08-27 02:09:58,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:09:58,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:09:58,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-08-27 02:09:58,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2023-08-27 02:09:58,432 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-08-27 02:09:58,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-08-27 02:09:58,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:58,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-08-27 02:09:58,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 02:09:58,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 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 02:09:58,434 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 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 02:09:58,434 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 267 flow. Second operand 3 states and 237 transitions. [2023-08-27 02:09:58,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 463 flow [2023-08-27 02:09:58,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 395 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-27 02:09:58,437 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 240 flow [2023-08-27 02:09:58,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-08-27 02:09:58,438 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2023-08-27 02:09:58,438 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 240 flow [2023-08-27 02:09:58,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 02:09:58,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:58,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:58,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 02:09:58,438 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:58,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:58,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1245195614, now seen corresponding path program 1 times [2023-08-27 02:09:58,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:58,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738575015] [2023-08-27 02:09:58,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:58,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:58,497 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 02:09:58,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:58,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738575015] [2023-08-27 02:09:58,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738575015] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:58,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:58,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:09:58,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113045166] [2023-08-27 02:09:58,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:58,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:09:58,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:58,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:09:58,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:09:58,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 141 [2023-08-27 02:09:58,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 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 02:09:58,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:58,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 141 [2023-08-27 02:09:58,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:58,596 INFO L124 PetriNetUnfolderBase]: 464/959 cut-off events. [2023-08-27 02:09:58,597 INFO L125 PetriNetUnfolderBase]: For 706/719 co-relation queries the response was YES. [2023-08-27 02:09:58,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2749 conditions, 959 events. 464/959 cut-off events. For 706/719 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5244 event pairs, 162 based on Foata normal form. 13/942 useless extension candidates. Maximal degree in co-relation 812. Up to 296 conditions per place. [2023-08-27 02:09:58,600 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 88 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2023-08-27 02:09:58,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 104 transitions, 709 flow [2023-08-27 02:09:58,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:09:58,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:09:58,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 433 transitions. [2023-08-27 02:09:58,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5118203309692672 [2023-08-27 02:09:58,602 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 433 transitions. [2023-08-27 02:09:58,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 433 transitions. [2023-08-27 02:09:58,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:58,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 433 transitions. [2023-08-27 02:09:58,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 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 02:09:58,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 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 02:09:58,604 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 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 02:09:58,604 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 240 flow. Second operand 6 states and 433 transitions. [2023-08-27 02:09:58,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 104 transitions, 709 flow [2023-08-27 02:09:58,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 104 transitions, 706 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:09:58,606 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 265 flow [2023-08-27 02:09:58,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2023-08-27 02:09:58,606 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2023-08-27 02:09:58,607 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 265 flow [2023-08-27 02:09:58,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 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 02:09:58,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:58,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:58,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 02:09:58,607 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:58,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:58,607 INFO L85 PathProgramCache]: Analyzing trace with hash 698289565, now seen corresponding path program 1 times [2023-08-27 02:09:58,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:58,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390598578] [2023-08-27 02:09:58,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:58,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:58,643 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 02:09:58,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:58,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390598578] [2023-08-27 02:09:58,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390598578] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:58,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:58,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:09:58,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675850624] [2023-08-27 02:09:58,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:58,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:09:58,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:58,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:09:58,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:09:58,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 141 [2023-08-27 02:09:58,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 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 02:09:58,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:58,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 141 [2023-08-27 02:09:58,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:58,730 INFO L124 PetriNetUnfolderBase]: 446/923 cut-off events. [2023-08-27 02:09:58,731 INFO L125 PetriNetUnfolderBase]: For 927/940 co-relation queries the response was YES. [2023-08-27 02:09:58,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2803 conditions, 923 events. 446/923 cut-off events. For 927/940 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5001 event pairs, 150 based on Foata normal form. 31/924 useless extension candidates. Maximal degree in co-relation 828. Up to 293 conditions per place. [2023-08-27 02:09:58,734 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 87 selfloop transitions, 8 changer transitions 0/103 dead transitions. [2023-08-27 02:09:58,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 103 transitions, 726 flow [2023-08-27 02:09:58,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:09:58,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:09:58,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 432 transitions. [2023-08-27 02:09:58,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2023-08-27 02:09:58,736 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 432 transitions. [2023-08-27 02:09:58,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 432 transitions. [2023-08-27 02:09:58,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:58,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 432 transitions. [2023-08-27 02:09:58,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 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 02:09:58,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 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 02:09:58,738 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 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 02:09:58,738 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 265 flow. Second operand 6 states and 432 transitions. [2023-08-27 02:09:58,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 103 transitions, 726 flow [2023-08-27 02:09:58,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 103 transitions, 712 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-27 02:09:58,741 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 263 flow [2023-08-27 02:09:58,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2023-08-27 02:09:58,741 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2023-08-27 02:09:58,741 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 263 flow [2023-08-27 02:09:58,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 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 02:09:58,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:58,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:58,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 02:09:58,742 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:58,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:58,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1900479339, now seen corresponding path program 1 times [2023-08-27 02:09:58,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:58,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597961340] [2023-08-27 02:09:58,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:58,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:58,779 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 02:09:58,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:58,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597961340] [2023-08-27 02:09:58,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597961340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:58,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:58,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:09:58,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600965170] [2023-08-27 02:09:58,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:58,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:09:58,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:58,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:09:58,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:09:58,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 141 [2023-08-27 02:09:58,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 263 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 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 02:09:58,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:58,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 141 [2023-08-27 02:09:58,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:58,875 INFO L124 PetriNetUnfolderBase]: 470/995 cut-off events. [2023-08-27 02:09:58,875 INFO L125 PetriNetUnfolderBase]: For 1005/1018 co-relation queries the response was YES. [2023-08-27 02:09:58,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3087 conditions, 995 events. 470/995 cut-off events. For 1005/1018 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5554 event pairs, 164 based on Foata normal form. 13/978 useless extension candidates. Maximal degree in co-relation 920. Up to 314 conditions per place. [2023-08-27 02:09:58,879 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 84 selfloop transitions, 7 changer transitions 0/99 dead transitions. [2023-08-27 02:09:58,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 696 flow [2023-08-27 02:09:58,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:09:58,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:09:58,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 366 transitions. [2023-08-27 02:09:58,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191489361702127 [2023-08-27 02:09:58,881 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 366 transitions. [2023-08-27 02:09:58,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 366 transitions. [2023-08-27 02:09:58,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:58,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 366 transitions. [2023-08-27 02:09:58,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 0 states have call successors, (0), 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 02:09:58,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 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 02:09:58,883 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 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 02:09:58,883 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 263 flow. Second operand 5 states and 366 transitions. [2023-08-27 02:09:58,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 696 flow [2023-08-27 02:09:58,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 99 transitions, 680 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 02:09:58,887 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 273 flow [2023-08-27 02:09:58,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2023-08-27 02:09:58,888 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2023-08-27 02:09:58,889 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 273 flow [2023-08-27 02:09:58,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 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 02:09:58,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:58,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:58,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 02:09:58,889 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:58,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:58,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1900479340, now seen corresponding path program 1 times [2023-08-27 02:09:58,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:58,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802012076] [2023-08-27 02:09:58,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:58,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:58,930 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 02:09:58,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:58,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802012076] [2023-08-27 02:09:58,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802012076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:58,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:58,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:09:58,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723408080] [2023-08-27 02:09:58,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:58,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:09:58,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:58,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:09:58,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:09:58,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 141 [2023-08-27 02:09:58,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 273 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 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 02:09:58,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:58,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 141 [2023-08-27 02:09:58,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:59,019 INFO L124 PetriNetUnfolderBase]: 458/971 cut-off events. [2023-08-27 02:09:59,019 INFO L125 PetriNetUnfolderBase]: For 1057/1070 co-relation queries the response was YES. [2023-08-27 02:09:59,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3068 conditions, 971 events. 458/971 cut-off events. For 1057/1070 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5413 event pairs, 158 based on Foata normal form. 13/966 useless extension candidates. Maximal degree in co-relation 914. Up to 314 conditions per place. [2023-08-27 02:09:59,024 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 83 selfloop transitions, 7 changer transitions 0/98 dead transitions. [2023-08-27 02:09:59,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 98 transitions, 696 flow [2023-08-27 02:09:59,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:09:59,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:09:59,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 365 transitions. [2023-08-27 02:09:59,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2023-08-27 02:09:59,025 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 365 transitions. [2023-08-27 02:09:59,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 365 transitions. [2023-08-27 02:09:59,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:59,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 365 transitions. [2023-08-27 02:09:59,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 02:09:59,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 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 02:09:59,027 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 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 02:09:59,027 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 273 flow. Second operand 5 states and 365 transitions. [2023-08-27 02:09:59,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 98 transitions, 696 flow [2023-08-27 02:09:59,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 98 transitions, 686 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 02:09:59,030 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 272 flow [2023-08-27 02:09:59,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2023-08-27 02:09:59,031 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2023-08-27 02:09:59,031 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 272 flow [2023-08-27 02:09:59,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 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 02:09:59,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:59,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:59,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 02:09:59,031 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:59,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:59,032 INFO L85 PathProgramCache]: Analyzing trace with hash 311141689, now seen corresponding path program 1 times [2023-08-27 02:09:59,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:59,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633324657] [2023-08-27 02:09:59,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:59,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:59,110 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 02:09:59,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:59,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633324657] [2023-08-27 02:09:59,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633324657] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:59,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:59,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:09:59,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513402727] [2023-08-27 02:09:59,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:59,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:09:59,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:59,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:09:59,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:09:59,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 141 [2023-08-27 02:09:59,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 02:09:59,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:59,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 141 [2023-08-27 02:09:59,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:59,196 INFO L124 PetriNetUnfolderBase]: 392/908 cut-off events. [2023-08-27 02:09:59,196 INFO L125 PetriNetUnfolderBase]: For 1245/1256 co-relation queries the response was YES. [2023-08-27 02:09:59,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2846 conditions, 908 events. 392/908 cut-off events. For 1245/1256 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5254 event pairs, 278 based on Foata normal form. 21/911 useless extension candidates. Maximal degree in co-relation 811. Up to 742 conditions per place. [2023-08-27 02:09:59,200 INFO L140 encePairwiseOnDemand]: 138/141 looper letters, 50 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-08-27 02:09:59,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 433 flow [2023-08-27 02:09:59,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:09:59,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:09:59,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2023-08-27 02:09:59,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366430260047281 [2023-08-27 02:09:59,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2023-08-27 02:09:59,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2023-08-27 02:09:59,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:59,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2023-08-27 02:09:59,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 02:09:59,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 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 02:09:59,202 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 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 02:09:59,202 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 272 flow. Second operand 3 states and 227 transitions. [2023-08-27 02:09:59,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 433 flow [2023-08-27 02:09:59,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 417 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 02:09:59,205 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 266 flow [2023-08-27 02:09:59,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2023-08-27 02:09:59,206 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-08-27 02:09:59,206 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 266 flow [2023-08-27 02:09:59,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 02:09:59,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:59,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:59,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 02:09:59,206 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:59,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:59,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1672477219, now seen corresponding path program 2 times [2023-08-27 02:09:59,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:59,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469866944] [2023-08-27 02:09:59,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:59,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:59,340 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 02:09:59,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:59,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469866944] [2023-08-27 02:09:59,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469866944] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:59,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:59,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:09:59,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039540244] [2023-08-27 02:09:59,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:59,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 02:09:59,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:59,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 02:09:59,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:09:59,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 141 [2023-08-27 02:09:59,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 266 flow. Second operand has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 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 02:09:59,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:59,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 141 [2023-08-27 02:09:59,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:59,476 INFO L124 PetriNetUnfolderBase]: 451/958 cut-off events. [2023-08-27 02:09:59,476 INFO L125 PetriNetUnfolderBase]: For 887/899 co-relation queries the response was YES. [2023-08-27 02:09:59,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2986 conditions, 958 events. 451/958 cut-off events. For 887/899 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5289 event pairs, 141 based on Foata normal form. 15/954 useless extension candidates. Maximal degree in co-relation 923. Up to 283 conditions per place. [2023-08-27 02:09:59,480 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 74 selfloop transitions, 6 changer transitions 31/119 dead transitions. [2023-08-27 02:09:59,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 119 transitions, 850 flow [2023-08-27 02:09:59,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:09:59,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:09:59,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 488 transitions. [2023-08-27 02:09:59,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49442755825734547 [2023-08-27 02:09:59,482 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 488 transitions. [2023-08-27 02:09:59,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 488 transitions. [2023-08-27 02:09:59,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:59,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 488 transitions. [2023-08-27 02:09:59,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 0 states have call successors, (0), 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 02:09:59,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 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 02:09:59,485 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 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 02:09:59,485 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 266 flow. Second operand 7 states and 488 transitions. [2023-08-27 02:09:59,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 119 transitions, 850 flow [2023-08-27 02:09:59,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 119 transitions, 846 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:09:59,488 INFO L231 Difference]: Finished difference. Result has 65 places, 48 transitions, 258 flow [2023-08-27 02:09:59,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=258, PETRI_PLACES=65, PETRI_TRANSITIONS=48} [2023-08-27 02:09:59,488 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-27 02:09:59,488 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 258 flow [2023-08-27 02:09:59,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 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 02:09:59,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:59,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:59,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 02:09:59,489 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:59,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:59,489 INFO L85 PathProgramCache]: Analyzing trace with hash -2077492713, now seen corresponding path program 3 times [2023-08-27 02:09:59,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:59,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293570984] [2023-08-27 02:09:59,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:59,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:59,621 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 02:09:59,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:59,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293570984] [2023-08-27 02:09:59,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293570984] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:59,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:59,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 02:09:59,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021611358] [2023-08-27 02:09:59,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:59,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 02:09:59,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:59,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 02:09:59,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:09:59,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 141 [2023-08-27 02:09:59,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 48 transitions, 258 flow. Second operand has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 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 02:09:59,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:59,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 141 [2023-08-27 02:09:59,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:09:59,768 INFO L124 PetriNetUnfolderBase]: 354/854 cut-off events. [2023-08-27 02:09:59,768 INFO L125 PetriNetUnfolderBase]: For 1052/1055 co-relation queries the response was YES. [2023-08-27 02:09:59,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2666 conditions, 854 events. 354/854 cut-off events. For 1052/1055 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4918 event pairs, 56 based on Foata normal form. 10/852 useless extension candidates. Maximal degree in co-relation 2619. Up to 427 conditions per place. [2023-08-27 02:09:59,772 INFO L140 encePairwiseOnDemand]: 133/141 looper letters, 65 selfloop transitions, 11 changer transitions 8/91 dead transitions. [2023-08-27 02:09:59,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 91 transitions, 611 flow [2023-08-27 02:09:59,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:09:59,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:09:59,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 541 transitions. [2023-08-27 02:09:59,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796099290780142 [2023-08-27 02:09:59,773 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 541 transitions. [2023-08-27 02:09:59,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 541 transitions. [2023-08-27 02:09:59,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:09:59,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 541 transitions. [2023-08-27 02:09:59,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 67.625) internal successors, (541), 8 states have internal predecessors, (541), 0 states have call successors, (0), 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 02:09:59,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 141.0) internal successors, (1269), 9 states have internal predecessors, (1269), 0 states have call successors, (0), 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 02:09:59,777 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 141.0) internal successors, (1269), 9 states have internal predecessors, (1269), 0 states have call successors, (0), 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 02:09:59,777 INFO L175 Difference]: Start difference. First operand has 65 places, 48 transitions, 258 flow. Second operand 8 states and 541 transitions. [2023-08-27 02:09:59,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 91 transitions, 611 flow [2023-08-27 02:09:59,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 562 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-27 02:09:59,779 INFO L231 Difference]: Finished difference. Result has 65 places, 48 transitions, 263 flow [2023-08-27 02:09:59,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=263, PETRI_PLACES=65, PETRI_TRANSITIONS=48} [2023-08-27 02:09:59,780 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-27 02:09:59,780 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 263 flow [2023-08-27 02:09:59,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 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 02:09:59,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:09:59,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:09:59,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 02:09:59,781 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:09:59,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:09:59,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1099517577, now seen corresponding path program 4 times [2023-08-27 02:09:59,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:09:59,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676193247] [2023-08-27 02:09:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:09:59,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:09:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:09:59,881 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 02:09:59,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:09:59,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676193247] [2023-08-27 02:09:59,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676193247] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:09:59,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:09:59,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 02:09:59,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262463354] [2023-08-27 02:09:59,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:09:59,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 02:09:59,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:09:59,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 02:09:59,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:09:59,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 141 [2023-08-27 02:09:59,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 48 transitions, 263 flow. Second operand has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 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 02:09:59,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:09:59,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 141 [2023-08-27 02:09:59,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:10:00,008 INFO L124 PetriNetUnfolderBase]: 274/672 cut-off events. [2023-08-27 02:10:00,009 INFO L125 PetriNetUnfolderBase]: For 829/832 co-relation queries the response was YES. [2023-08-27 02:10:00,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2054 conditions, 672 events. 274/672 cut-off events. For 829/832 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3589 event pairs, 32 based on Foata normal form. 10/676 useless extension candidates. Maximal degree in co-relation 811. Up to 148 conditions per place. [2023-08-27 02:10:00,011 INFO L140 encePairwiseOnDemand]: 133/141 looper letters, 57 selfloop transitions, 11 changer transitions 16/91 dead transitions. [2023-08-27 02:10:00,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 91 transitions, 581 flow [2023-08-27 02:10:00,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 02:10:00,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 02:10:00,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 604 transitions. [2023-08-27 02:10:00,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47596532702915684 [2023-08-27 02:10:00,013 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 604 transitions. [2023-08-27 02:10:00,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 604 transitions. [2023-08-27 02:10:00,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:10:00,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 604 transitions. [2023-08-27 02:10:00,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 0 states have call successors, (0), 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 02:10:00,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 0 states have call successors, (0), 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 02:10:00,016 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 0 states have call successors, (0), 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 02:10:00,016 INFO L175 Difference]: Start difference. First operand has 65 places, 48 transitions, 263 flow. Second operand 9 states and 604 transitions. [2023-08-27 02:10:00,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 91 transitions, 581 flow [2023-08-27 02:10:00,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 529 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-08-27 02:10:00,019 INFO L231 Difference]: Finished difference. Result has 65 places, 41 transitions, 198 flow [2023-08-27 02:10:00,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=198, PETRI_PLACES=65, PETRI_TRANSITIONS=41} [2023-08-27 02:10:00,019 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-27 02:10:00,019 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 41 transitions, 198 flow [2023-08-27 02:10:00,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 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 02:10:00,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:10:00,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:10:00,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 02:10:00,020 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:10:00,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:10:00,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1910246865, now seen corresponding path program 5 times [2023-08-27 02:10:00,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:10:00,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434163753] [2023-08-27 02:10:00,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:10:00,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:10:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:10:00,078 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 02:10:00,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:10:00,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434163753] [2023-08-27 02:10:00,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434163753] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:10:00,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:10:00,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:10:00,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629053862] [2023-08-27 02:10:00,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:10:00,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:10:00,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:10:00,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:10:00,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:10:00,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 141 [2023-08-27 02:10:00,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 41 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 02:10:00,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:10:00,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 141 [2023-08-27 02:10:00,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:10:00,146 INFO L124 PetriNetUnfolderBase]: 213/519 cut-off events. [2023-08-27 02:10:00,146 INFO L125 PetriNetUnfolderBase]: For 755/760 co-relation queries the response was YES. [2023-08-27 02:10:00,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1530 conditions, 519 events. 213/519 cut-off events. For 755/760 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2465 event pairs, 162 based on Foata normal form. 10/517 useless extension candidates. Maximal degree in co-relation 1124. Up to 416 conditions per place. [2023-08-27 02:10:00,148 INFO L140 encePairwiseOnDemand]: 138/141 looper letters, 40 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-27 02:10:00,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 50 transitions, 329 flow [2023-08-27 02:10:00,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:10:00,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:10:00,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2023-08-27 02:10:00,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366430260047281 [2023-08-27 02:10:00,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2023-08-27 02:10:00,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2023-08-27 02:10:00,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:10:00,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2023-08-27 02:10:00,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 02:10:00,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 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 02:10:00,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 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 02:10:00,151 INFO L175 Difference]: Start difference. First operand has 65 places, 41 transitions, 198 flow. Second operand 3 states and 227 transitions. [2023-08-27 02:10:00,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 50 transitions, 329 flow [2023-08-27 02:10:00,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 282 flow, removed 3 selfloop flow, removed 10 redundant places. [2023-08-27 02:10:00,153 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 169 flow [2023-08-27 02:10:00,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-08-27 02:10:00,154 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2023-08-27 02:10:00,154 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 169 flow [2023-08-27 02:10:00,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 02:10:00,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:10:00,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:10:00,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 02:10:00,154 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:10:00,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:10:00,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1868847385, now seen corresponding path program 6 times [2023-08-27 02:10:00,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:10:00,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878378510] [2023-08-27 02:10:00,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:10:00,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:10:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:10:00,245 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 02:10:00,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:10:00,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878378510] [2023-08-27 02:10:00,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878378510] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:10:00,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:10:00,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 02:10:00,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906412917] [2023-08-27 02:10:00,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:10:00,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 02:10:00,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:10:00,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 02:10:00,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:10:00,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 141 [2023-08-27 02:10:00,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 169 flow. Second operand has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 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 02:10:00,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:10:00,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 141 [2023-08-27 02:10:00,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:10:00,357 INFO L124 PetriNetUnfolderBase]: 144/360 cut-off events. [2023-08-27 02:10:00,358 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2023-08-27 02:10:00,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1017 conditions, 360 events. 144/360 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1533 event pairs, 36 based on Foata normal form. 8/361 useless extension candidates. Maximal degree in co-relation 335. Up to 213 conditions per place. [2023-08-27 02:10:00,359 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 39 selfloop transitions, 5 changer transitions 10/61 dead transitions. [2023-08-27 02:10:00,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 337 flow [2023-08-27 02:10:00,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:10:00,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:10:00,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 403 transitions. [2023-08-27 02:10:00,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635933806146574 [2023-08-27 02:10:00,360 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 403 transitions. [2023-08-27 02:10:00,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 403 transitions. [2023-08-27 02:10:00,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:10:00,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 403 transitions. [2023-08-27 02:10:00,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 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 02:10:00,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 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 02:10:00,363 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 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 02:10:00,363 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 169 flow. Second operand 6 states and 403 transitions. [2023-08-27 02:10:00,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 337 flow [2023-08-27 02:10:00,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:10:00,364 INFO L231 Difference]: Finished difference. Result has 56 places, 38 transitions, 161 flow [2023-08-27 02:10:00,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=56, PETRI_TRANSITIONS=38} [2023-08-27 02:10:00,365 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2023-08-27 02:10:00,365 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 38 transitions, 161 flow [2023-08-27 02:10:00,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 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 02:10:00,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:10:00,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:10:00,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 02:10:00,365 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:10:00,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:10:00,366 INFO L85 PathProgramCache]: Analyzing trace with hash -206405261, now seen corresponding path program 7 times [2023-08-27 02:10:00,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:10:00,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588377686] [2023-08-27 02:10:00,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:10:00,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:10:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:10:00,438 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 02:10:00,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:10:00,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588377686] [2023-08-27 02:10:00,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588377686] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:10:00,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:10:00,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 02:10:00,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583496813] [2023-08-27 02:10:00,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:10:00,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 02:10:00,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:10:00,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 02:10:00,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:10:00,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 141 [2023-08-27 02:10:00,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 38 transitions, 161 flow. Second operand has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 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 02:10:00,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:10:00,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 141 [2023-08-27 02:10:00,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:10:00,513 INFO L124 PetriNetUnfolderBase]: 57/163 cut-off events. [2023-08-27 02:10:00,513 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2023-08-27 02:10:00,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 163 events. 57/163 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 509 event pairs, 12 based on Foata normal form. 8/169 useless extension candidates. Maximal degree in co-relation 236. Up to 43 conditions per place. [2023-08-27 02:10:00,514 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 26 selfloop transitions, 11 changer transitions 0/43 dead transitions. [2023-08-27 02:10:00,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 43 transitions, 243 flow [2023-08-27 02:10:00,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:10:00,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:10:00,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 449 transitions. [2023-08-27 02:10:00,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45491388044579534 [2023-08-27 02:10:00,515 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 449 transitions. [2023-08-27 02:10:00,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 449 transitions. [2023-08-27 02:10:00,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:10:00,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 449 transitions. [2023-08-27 02:10:00,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 64.14285714285714) internal successors, (449), 7 states have internal predecessors, (449), 0 states have call successors, (0), 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 02:10:00,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 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 02:10:00,518 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 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 02:10:00,518 INFO L175 Difference]: Start difference. First operand has 56 places, 38 transitions, 161 flow. Second operand 7 states and 449 transitions. [2023-08-27 02:10:00,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 43 transitions, 243 flow [2023-08-27 02:10:00,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 199 flow, removed 5 selfloop flow, removed 12 redundant places. [2023-08-27 02:10:00,519 INFO L231 Difference]: Finished difference. Result has 48 places, 33 transitions, 127 flow [2023-08-27 02:10:00,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=127, PETRI_PLACES=48, PETRI_TRANSITIONS=33} [2023-08-27 02:10:00,519 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-08-27 02:10:00,519 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 33 transitions, 127 flow [2023-08-27 02:10:00,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 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 02:10:00,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:10:00,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:10:00,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 02:10:00,520 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:10:00,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:10:00,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1943698077, now seen corresponding path program 8 times [2023-08-27 02:10:00,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:10:00,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281708639] [2023-08-27 02:10:00,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:10:00,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:10:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:10:00,595 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 02:10:00,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:10:00,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281708639] [2023-08-27 02:10:00,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281708639] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:10:00,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:10:00,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:10:00,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657355496] [2023-08-27 02:10:00,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:10:00,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 02:10:00,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:10:00,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 02:10:00,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:10:00,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 141 [2023-08-27 02:10:00,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 33 transitions, 127 flow. Second operand has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 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 02:10:00,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:10:00,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 141 [2023-08-27 02:10:00,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:10:00,655 INFO L124 PetriNetUnfolderBase]: 54/145 cut-off events. [2023-08-27 02:10:00,655 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-08-27 02:10:00,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 145 events. 54/145 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 472 event pairs, 27 based on Foata normal form. 2/136 useless extension candidates. Maximal degree in co-relation 208. Up to 61 conditions per place. [2023-08-27 02:10:00,656 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2023-08-27 02:10:00,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 37 transitions, 202 flow [2023-08-27 02:10:00,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:10:00,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:10:00,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 392 transitions. [2023-08-27 02:10:00,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46335697399527187 [2023-08-27 02:10:00,657 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 392 transitions. [2023-08-27 02:10:00,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 392 transitions. [2023-08-27 02:10:00,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:10:00,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 392 transitions. [2023-08-27 02:10:00,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 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 02:10:00,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 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 02:10:00,658 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 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 02:10:00,659 INFO L175 Difference]: Start difference. First operand has 48 places, 33 transitions, 127 flow. Second operand 6 states and 392 transitions. [2023-08-27 02:10:00,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 37 transitions, 202 flow [2023-08-27 02:10:00,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 37 transitions, 178 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 02:10:00,659 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2023-08-27 02:10:00,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2023-08-27 02:10:00,660 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-27 02:10:00,660 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2023-08-27 02:10:00,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 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 02:10:00,661 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2023-08-27 02:10:00,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-27 02:10:00,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-08-27 02:10:00,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-27 02:10:00,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-27 02:10:00,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-27 02:10:00,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-27 02:10:00,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-27 02:10:00,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (10 of 19 remaining) [2023-08-27 02:10:00,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 19 remaining) [2023-08-27 02:10:00,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2023-08-27 02:10:00,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-27 02:10:00,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-27 02:10:00,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-27 02:10:00,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-27 02:10:00,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-27 02:10:00,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-27 02:10:00,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-27 02:10:00,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-27 02:10:00,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 02:10:00,664 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:10:00,667 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 02:10:00,667 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 02:10:00,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 02:10:00 BasicIcfg [2023-08-27 02:10:00,669 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 02:10:00,669 INFO L158 Benchmark]: Toolchain (without parser) took 5822.28ms. Allocated memory was 364.9MB in the beginning and 614.5MB in the end (delta: 249.6MB). Free memory was 342.0MB in the beginning and 408.0MB in the end (delta: -66.0MB). Peak memory consumption was 185.5MB. Max. memory is 16.0GB. [2023-08-27 02:10:00,669 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 364.9MB. Free memory is still 343.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 02:10:00,669 INFO L158 Benchmark]: CACSL2BoogieTranslator took 164.80ms. Allocated memory is still 364.9MB. Free memory was 341.5MB in the beginning and 330.9MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 02:10:00,669 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.32ms. Allocated memory is still 364.9MB. Free memory was 330.9MB in the beginning and 328.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:10:00,669 INFO L158 Benchmark]: Boogie Preprocessor took 29.29ms. Allocated memory is still 364.9MB. Free memory was 328.8MB in the beginning and 327.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:10:00,670 INFO L158 Benchmark]: RCFGBuilder took 304.54ms. Allocated memory is still 364.9MB. Free memory was 327.7MB in the beginning and 309.4MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 02:10:00,670 INFO L158 Benchmark]: TraceAbstraction took 5281.21ms. Allocated memory was 364.9MB in the beginning and 614.5MB in the end (delta: 249.6MB). Free memory was 308.8MB in the beginning and 408.0MB in the end (delta: -99.2MB). Peak memory consumption was 151.9MB. Max. memory is 16.0GB. [2023-08-27 02:10:00,671 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 364.9MB. Free memory is still 343.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 164.80ms. Allocated memory is still 364.9MB. Free memory was 341.5MB in the beginning and 330.9MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 36.32ms. Allocated memory is still 364.9MB. Free memory was 330.9MB in the beginning and 328.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.29ms. Allocated memory is still 364.9MB. Free memory was 328.8MB in the beginning and 327.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 304.54ms. Allocated memory is still 364.9MB. Free memory was 327.7MB in the beginning and 309.4MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 5281.21ms. Allocated memory was 364.9MB in the beginning and 614.5MB in the end (delta: 249.6MB). Free memory was 308.8MB in the beginning and 408.0MB in the end (delta: -99.2MB). Peak memory consumption was 151.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 82 PlacesBefore, 42 PlacesAfterwards, 76 TransitionsBefore, 35 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 5 FixpointIterations, 31 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 54 TotalNumberOfCompositions, 5750 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2624, independent: 2342, independent conditional: 0, independent unconditional: 2342, dependent: 282, dependent conditional: 0, dependent unconditional: 282, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 542, independent: 514, independent conditional: 0, independent unconditional: 514, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2624, independent: 1828, independent conditional: 0, independent unconditional: 1828, dependent: 254, dependent conditional: 0, dependent unconditional: 254, unknown: 542, unknown conditional: 0, unknown unconditional: 542] , Statistics on independence cache: Total cache size (in pairs): 203, Positive cache size: 180, Positive conditional cache size: 0, Positive unconditional cache size: 180, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 121 locations, 19 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: 5.2s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1004 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1004 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1865 IncrementalHoareTripleChecker+Invalid, 1917 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 8 mSDtfsCounter, 1865 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=273occurred in iteration=10, InterpolantAutomatonStates: 108, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 347 NumberOfCodeBlocks, 347 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 328 ConstructedInterpolants, 0 QuantifiedInterpolants, 1115 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 02:10:00,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...