/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 --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -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-easy11.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 08:46:47,157 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 08:46:47,220 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 08:46:47,224 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 08:46:47,225 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 08:46:47,247 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 08:46:47,247 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 08:46:47,247 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 08:46:47,248 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 08:46:47,250 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 08:46:47,251 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 08:46:47,251 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 08:46:47,251 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 08:46:47,252 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 08:46:47,252 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 08:46:47,252 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 08:46:47,252 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 08:46:47,252 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 08:46:47,253 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 08:46:47,253 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 08:46:47,253 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 08:46:47,253 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 08:46:47,254 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 08:46:47,254 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 08:46:47,254 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 08:46:47,254 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 08:46:47,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 08:46:47,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 08:46:47,255 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 08:46:47,255 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 08:46:47,255 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 08:46:47,256 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 08:46:47,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 08:46:47,256 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 08:46:47,256 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 08:46:47,256 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 08:46:47,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 08:46:47,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 08:46:47,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 08:46:47,515 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 08:46:47,516 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 08:46:47,517 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-08-27 08:46:48,393 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 08:46:48,567 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 08:46:48,567 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-08-27 08:46:48,574 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24b3751ec/46a02de2a9c84b3eae186142d9b0f1ff/FLAG0029bf7c7 [2023-08-27 08:46:48,584 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24b3751ec/46a02de2a9c84b3eae186142d9b0f1ff [2023-08-27 08:46:48,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 08:46:48,588 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 08:46:48,590 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 08:46:48,591 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 08:46:48,593 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 08:46:48,594 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 08:46:48" (1/1) ... [2023-08-27 08:46:48,594 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408d7ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:46:48, skipping insertion in model container [2023-08-27 08:46:48,594 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 08:46:48" (1/1) ... [2023-08-27 08:46:48,609 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 08:46:48,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 08:46:48,745 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 08:46:48,770 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 08:46:48,776 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 08:46:48,776 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 08:46:48,780 INFO L206 MainTranslator]: Completed translation [2023-08-27 08:46:48,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:46:48 WrapperNode [2023-08-27 08:46:48,781 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 08:46:48,782 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 08:46:48,782 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 08:46:48,782 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 08:46:48,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:46:48" (1/1) ... [2023-08-27 08:46:48,792 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:46:48" (1/1) ... [2023-08-27 08:46:48,808 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2023-08-27 08:46:48,808 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 08:46:48,809 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 08:46:48,809 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 08:46:48,809 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 08:46:48,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:46:48" (1/1) ... [2023-08-27 08:46:48,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:46:48" (1/1) ... [2023-08-27 08:46:48,824 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:46:48" (1/1) ... [2023-08-27 08:46:48,824 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:46:48" (1/1) ... [2023-08-27 08:46:48,832 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:46:48" (1/1) ... [2023-08-27 08:46:48,834 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:46:48" (1/1) ... [2023-08-27 08:46:48,834 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:46:48" (1/1) ... [2023-08-27 08:46:48,835 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:46:48" (1/1) ... [2023-08-27 08:46:48,836 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 08:46:48,837 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 08:46:48,837 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 08:46:48,837 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 08:46:48,837 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:46:48" (1/1) ... [2023-08-27 08:46:48,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 08:46:48,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:46:48,863 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 08:46:48,869 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 08:46:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 08:46:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 08:46:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 08:46:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 08:46:48,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 08:46:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 08:46:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 08:46:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 08:46:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 08:46:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 08:46:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 08:46:48,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 08:46:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 08:46:48,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 08:46:48,890 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 08:46:48,974 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 08:46:48,976 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 08:46:49,164 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 08:46:49,184 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 08:46:49,184 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 08:46:49,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 08:46:49 BoogieIcfgContainer [2023-08-27 08:46:49,186 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 08:46:49,187 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 08:46:49,187 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 08:46:49,189 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 08:46:49,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 08:46:48" (1/3) ... [2023-08-27 08:46:49,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f35dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 08:46:49, skipping insertion in model container [2023-08-27 08:46:49,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:46:48" (2/3) ... [2023-08-27 08:46:49,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f35dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 08:46:49, skipping insertion in model container [2023-08-27 08:46:49,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 08:46:49" (3/3) ... [2023-08-27 08:46:49,191 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2023-08-27 08:46:49,201 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 08:46:49,201 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 08:46:49,201 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 08:46:49,244 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 08:46:49,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 94 transitions, 204 flow [2023-08-27 08:46:49,301 INFO L124 PetriNetUnfolderBase]: 6/92 cut-off events. [2023-08-27 08:46:49,301 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 08:46:49,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 92 events. 6/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 102 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-27 08:46:49,304 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 94 transitions, 204 flow [2023-08-27 08:46:49,307 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 83 transitions, 178 flow [2023-08-27 08:46:49,309 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 08:46:49,320 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 83 transitions, 178 flow [2023-08-27 08:46:49,322 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 83 transitions, 178 flow [2023-08-27 08:46:49,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 83 transitions, 178 flow [2023-08-27 08:46:49,336 INFO L124 PetriNetUnfolderBase]: 6/83 cut-off events. [2023-08-27 08:46:49,337 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 08:46:49,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 83 events. 6/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 100 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-27 08:46:49,338 INFO L119 LiptonReduction]: Number of co-enabled transitions 1088 [2023-08-27 08:46:51,175 INFO L134 LiptonReduction]: Checked pairs total: 1106 [2023-08-27 08:46:51,175 INFO L136 LiptonReduction]: Total number of compositions: 79 [2023-08-27 08:46:51,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 08:46:51,188 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;@44638abc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 08:46:51,188 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-27 08:46:51,190 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 08:46:51,191 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2023-08-27 08:46:51,191 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 08:46:51,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:51,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 08:46:51,191 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:51,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:51,197 INFO L85 PathProgramCache]: Analyzing trace with hash 11338661, now seen corresponding path program 1 times [2023-08-27 08:46:51,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:51,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539442737] [2023-08-27 08:46:51,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:51,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:51,342 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 08:46:51,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:51,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539442737] [2023-08-27 08:46:51,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539442737] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:46:51,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:46:51,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 08:46:51,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797517621] [2023-08-27 08:46:51,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:51,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:46:51,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:51,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:46:51,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 08:46:51,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-08-27 08:46:51,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:51,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:51,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-08-27 08:46:51,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:51,455 INFO L124 PetriNetUnfolderBase]: 100/179 cut-off events. [2023-08-27 08:46:51,455 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-08-27 08:46:51,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 179 events. 100/179 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 560 event pairs, 43 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 312. Up to 98 conditions per place. [2023-08-27 08:46:51,459 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 31 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2023-08-27 08:46:51,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 34 transitions, 151 flow [2023-08-27 08:46:51,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:46:51,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:46:51,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-08-27 08:46:51,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5221579961464354 [2023-08-27 08:46:51,474 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-08-27 08:46:51,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-08-27 08:46:51,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:51,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-08-27 08:46:51,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:51,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:51,494 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:51,496 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 58 flow. Second operand 3 states and 271 transitions. [2023-08-27 08:46:51,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 34 transitions, 151 flow [2023-08-27 08:46:51,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 34 transitions, 141 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 08:46:51,499 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 67 flow [2023-08-27 08:46:51,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2023-08-27 08:46:51,504 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -3 predicate places. [2023-08-27 08:46:51,504 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 67 flow [2023-08-27 08:46:51,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:51,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:51,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 08:46:51,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 08:46:51,505 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:51,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:51,506 INFO L85 PathProgramCache]: Analyzing trace with hash 11338662, now seen corresponding path program 1 times [2023-08-27 08:46:51,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:51,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161360876] [2023-08-27 08:46:51,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:51,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:51,594 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 08:46:51,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:51,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161360876] [2023-08-27 08:46:51,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161360876] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:46:51,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:46:51,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 08:46:51,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259503659] [2023-08-27 08:46:51,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:51,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 08:46:51,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:51,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 08:46:51,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 08:46:51,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 173 [2023-08-27 08:46:51,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:51,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:51,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 173 [2023-08-27 08:46:51,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:51,665 INFO L124 PetriNetUnfolderBase]: 84/153 cut-off events. [2023-08-27 08:46:51,665 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 08:46:51,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 153 events. 84/153 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 495 event pairs, 7 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 150. Up to 80 conditions per place. [2023-08-27 08:46:51,666 INFO L140 encePairwiseOnDemand]: 168/173 looper letters, 36 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2023-08-27 08:46:51,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 41 transitions, 190 flow [2023-08-27 08:46:51,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 08:46:51,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 08:46:51,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 310 transitions. [2023-08-27 08:46:51,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479768786127168 [2023-08-27 08:46:51,670 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 310 transitions. [2023-08-27 08:46:51,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 310 transitions. [2023-08-27 08:46:51,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:51,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 310 transitions. [2023-08-27 08:46:51,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:51,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:51,674 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:51,675 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 67 flow. Second operand 4 states and 310 transitions. [2023-08-27 08:46:51,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 41 transitions, 190 flow [2023-08-27 08:46:51,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 41 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 08:46:51,676 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 90 flow [2023-08-27 08:46:51,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-08-27 08:46:51,677 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2023-08-27 08:46:51,677 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 90 flow [2023-08-27 08:46:51,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:51,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:51,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 08:46:51,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 08:46:51,681 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:51,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:51,682 INFO L85 PathProgramCache]: Analyzing trace with hash 11338656, now seen corresponding path program 1 times [2023-08-27 08:46:51,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:51,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174282383] [2023-08-27 08:46:51,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:51,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:51,737 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 08:46:51,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:51,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174282383] [2023-08-27 08:46:51,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174282383] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:46:51,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:46:51,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 08:46:51,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165727886] [2023-08-27 08:46:51,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:51,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 08:46:51,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:51,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 08:46:51,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 08:46:51,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 173 [2023-08-27 08:46:51,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:51,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:51,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 173 [2023-08-27 08:46:51,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:51,788 INFO L124 PetriNetUnfolderBase]: 67/124 cut-off events. [2023-08-27 08:46:51,788 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-27 08:46:51,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 124 events. 67/124 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 354 event pairs, 8 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 121. Up to 105 conditions per place. [2023-08-27 08:46:51,790 INFO L140 encePairwiseOnDemand]: 170/173 looper letters, 28 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-08-27 08:46:51,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 165 flow [2023-08-27 08:46:51,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 08:46:51,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 08:46:51,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 309 transitions. [2023-08-27 08:46:51,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44653179190751446 [2023-08-27 08:46:51,791 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 309 transitions. [2023-08-27 08:46:51,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 309 transitions. [2023-08-27 08:46:51,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:51,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 309 transitions. [2023-08-27 08:46:51,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:51,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:51,794 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:51,794 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 90 flow. Second operand 4 states and 309 transitions. [2023-08-27 08:46:51,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 165 flow [2023-08-27 08:46:51,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 157 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 08:46:51,796 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 86 flow [2023-08-27 08:46:51,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-08-27 08:46:51,797 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2023-08-27 08:46:51,797 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 86 flow [2023-08-27 08:46:51,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:51,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:51,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 08:46:51,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 08:46:51,801 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:51,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:51,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1986797394, now seen corresponding path program 1 times [2023-08-27 08:46:51,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:51,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197433745] [2023-08-27 08:46:51,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:51,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:51,858 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 08:46:51,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:51,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197433745] [2023-08-27 08:46:51,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197433745] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:46:51,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:46:51,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 08:46:51,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759256912] [2023-08-27 08:46:51,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:51,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 08:46:51,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:51,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 08:46:51,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 08:46:51,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 173 [2023-08-27 08:46:51,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:51,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:51,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 173 [2023-08-27 08:46:51,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:51,904 INFO L124 PetriNetUnfolderBase]: 56/105 cut-off events. [2023-08-27 08:46:51,905 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-08-27 08:46:51,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 105 events. 56/105 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 258 event pairs, 6 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 194. Up to 80 conditions per place. [2023-08-27 08:46:51,907 INFO L140 encePairwiseOnDemand]: 170/173 looper letters, 27 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-08-27 08:46:51,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 164 flow [2023-08-27 08:46:51,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 08:46:51,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 08:46:51,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 306 transitions. [2023-08-27 08:46:51,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421965317919075 [2023-08-27 08:46:51,909 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 306 transitions. [2023-08-27 08:46:51,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 306 transitions. [2023-08-27 08:46:51,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:51,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 306 transitions. [2023-08-27 08:46:51,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:51,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:51,911 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:51,912 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 86 flow. Second operand 4 states and 306 transitions. [2023-08-27 08:46:51,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 164 flow [2023-08-27 08:46:51,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 29 transitions, 159 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 08:46:51,913 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 84 flow [2023-08-27 08:46:51,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2023-08-27 08:46:51,915 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2023-08-27 08:46:51,915 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 84 flow [2023-08-27 08:46:51,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:51,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:51,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 08:46:51,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 08:46:51,915 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:51,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:51,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1986797383, now seen corresponding path program 1 times [2023-08-27 08:46:51,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:51,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329074939] [2023-08-27 08:46:51,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:51,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:52,006 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 08:46:52,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:52,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329074939] [2023-08-27 08:46:52,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329074939] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:46:52,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:46:52,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 08:46:52,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943205669] [2023-08-27 08:46:52,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:52,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 08:46:52,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:52,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 08:46:52,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 08:46:52,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 173 [2023-08-27 08:46:52,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:52,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 173 [2023-08-27 08:46:52,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:52,059 INFO L124 PetriNetUnfolderBase]: 48/93 cut-off events. [2023-08-27 08:46:52,059 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-08-27 08:46:52,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 93 events. 48/93 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 218 event pairs, 11 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 182. Up to 64 conditions per place. [2023-08-27 08:46:52,063 INFO L140 encePairwiseOnDemand]: 168/173 looper letters, 27 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-08-27 08:46:52,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 181 flow [2023-08-27 08:46:52,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 08:46:52,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 08:46:52,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 301 transitions. [2023-08-27 08:46:52,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434971098265896 [2023-08-27 08:46:52,065 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 301 transitions. [2023-08-27 08:46:52,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 301 transitions. [2023-08-27 08:46:52,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:52,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 301 transitions. [2023-08-27 08:46:52,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,067 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,067 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 84 flow. Second operand 4 states and 301 transitions. [2023-08-27 08:46:52,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 181 flow [2023-08-27 08:46:52,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 177 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 08:46:52,068 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 112 flow [2023-08-27 08:46:52,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-08-27 08:46:52,070 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2023-08-27 08:46:52,070 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 112 flow [2023-08-27 08:46:52,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:52,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:52,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 08:46:52,071 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:52,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:52,071 INFO L85 PathProgramCache]: Analyzing trace with hash 371192656, now seen corresponding path program 1 times [2023-08-27 08:46:52,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:52,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316376681] [2023-08-27 08:46:52,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:52,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:52,135 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 08:46:52,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:52,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316376681] [2023-08-27 08:46:52,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316376681] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:46:52,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:46:52,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 08:46:52,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415482031] [2023-08-27 08:46:52,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:52,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 08:46:52,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:52,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 08:46:52,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 08:46:52,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 08:46:52,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:52,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 08:46:52,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:52,221 INFO L124 PetriNetUnfolderBase]: 59/108 cut-off events. [2023-08-27 08:46:52,221 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-08-27 08:46:52,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 108 events. 59/108 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 260 event pairs, 2 based on Foata normal form. 4/102 useless extension candidates. Maximal degree in co-relation 154. Up to 32 conditions per place. [2023-08-27 08:46:52,222 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 34 selfloop transitions, 14 changer transitions 0/48 dead transitions. [2023-08-27 08:46:52,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 48 transitions, 272 flow [2023-08-27 08:46:52,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 08:46:52,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 08:46:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 545 transitions. [2023-08-27 08:46:52,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39378612716763006 [2023-08-27 08:46:52,224 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 545 transitions. [2023-08-27 08:46:52,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 545 transitions. [2023-08-27 08:46:52,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:52,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 545 transitions. [2023-08-27 08:46:52,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.125) internal successors, (545), 8 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,228 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,228 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 112 flow. Second operand 8 states and 545 transitions. [2023-08-27 08:46:52,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 48 transitions, 272 flow [2023-08-27 08:46:52,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 48 transitions, 267 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 08:46:52,231 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 175 flow [2023-08-27 08:46:52,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=175, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2023-08-27 08:46:52,233 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 12 predicate places. [2023-08-27 08:46:52,233 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 175 flow [2023-08-27 08:46:52,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:52,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:52,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 08:46:52,234 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:52,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:52,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1947687735, now seen corresponding path program 1 times [2023-08-27 08:46:52,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:52,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717056006] [2023-08-27 08:46:52,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:52,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:52,268 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 08:46:52,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:52,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717056006] [2023-08-27 08:46:52,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717056006] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:46:52,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:46:52,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 08:46:52,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001037108] [2023-08-27 08:46:52,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:52,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 08:46:52,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:52,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 08:46:52,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 08:46:52,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-08-27 08:46:52,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:52,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-08-27 08:46:52,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:52,304 INFO L124 PetriNetUnfolderBase]: 51/94 cut-off events. [2023-08-27 08:46:52,305 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2023-08-27 08:46:52,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 94 events. 51/94 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 201 event pairs, 11 based on Foata normal form. 8/102 useless extension candidates. Maximal degree in co-relation 254. Up to 64 conditions per place. [2023-08-27 08:46:52,305 INFO L140 encePairwiseOnDemand]: 168/173 looper letters, 27 selfloop transitions, 5 changer transitions 0/32 dead transitions. [2023-08-27 08:46:52,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 234 flow [2023-08-27 08:46:52,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 08:46:52,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 08:46:52,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 336 transitions. [2023-08-27 08:46:52,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48554913294797686 [2023-08-27 08:46:52,306 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 336 transitions. [2023-08-27 08:46:52,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 336 transitions. [2023-08-27 08:46:52,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:52,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 336 transitions. [2023-08-27 08:46:52,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,308 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,308 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 175 flow. Second operand 4 states and 336 transitions. [2023-08-27 08:46:52,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 234 flow [2023-08-27 08:46:52,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 194 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-27 08:46:52,312 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 127 flow [2023-08-27 08:46:52,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2023-08-27 08:46:52,313 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2023-08-27 08:46:52,313 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 127 flow [2023-08-27 08:46:52,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:52,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:52,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 08:46:52,314 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:52,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:52,315 INFO L85 PathProgramCache]: Analyzing trace with hash 371147987, now seen corresponding path program 1 times [2023-08-27 08:46:52,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:52,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110026234] [2023-08-27 08:46:52,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:52,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:52,382 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 08:46:52,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:52,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110026234] [2023-08-27 08:46:52,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110026234] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:46:52,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:46:52,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 08:46:52,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946504408] [2023-08-27 08:46:52,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:52,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 08:46:52,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:52,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 08:46:52,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 08:46:52,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 08:46:52,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:52,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 08:46:52,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:52,453 INFO L124 PetriNetUnfolderBase]: 61/108 cut-off events. [2023-08-27 08:46:52,453 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-08-27 08:46:52,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 108 events. 61/108 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 244 event pairs, 7 based on Foata normal form. 2/110 useless extension candidates. Maximal degree in co-relation 244. Up to 71 conditions per place. [2023-08-27 08:46:52,454 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 30 selfloop transitions, 14 changer transitions 0/44 dead transitions. [2023-08-27 08:46:52,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 44 transitions, 272 flow [2023-08-27 08:46:52,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 08:46:52,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 08:46:52,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 413 transitions. [2023-08-27 08:46:52,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978805394990366 [2023-08-27 08:46:52,455 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 413 transitions. [2023-08-27 08:46:52,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 413 transitions. [2023-08-27 08:46:52,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:52,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 413 transitions. [2023-08-27 08:46:52,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.83333333333333) internal successors, (413), 6 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,458 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,458 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 127 flow. Second operand 6 states and 413 transitions. [2023-08-27 08:46:52,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 44 transitions, 272 flow [2023-08-27 08:46:52,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 44 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 08:46:52,459 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 194 flow [2023-08-27 08:46:52,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-08-27 08:46:52,461 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 11 predicate places. [2023-08-27 08:46:52,461 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 194 flow [2023-08-27 08:46:52,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:52,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:52,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 08:46:52,462 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:52,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:52,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1947687736, now seen corresponding path program 2 times [2023-08-27 08:46:52,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:52,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933142107] [2023-08-27 08:46:52,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:52,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:52,528 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 08:46:52,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:52,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933142107] [2023-08-27 08:46:52,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933142107] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:46:52,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:46:52,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 08:46:52,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717002036] [2023-08-27 08:46:52,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:52,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 08:46:52,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:52,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 08:46:52,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 08:46:52,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 08:46:52,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:52,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 08:46:52,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:52,628 INFO L124 PetriNetUnfolderBase]: 68/119 cut-off events. [2023-08-27 08:46:52,628 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-27 08:46:52,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 119 events. 68/119 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 275 event pairs, 6 based on Foata normal form. 4/123 useless extension candidates. Maximal degree in co-relation 366. Up to 80 conditions per place. [2023-08-27 08:46:52,629 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 36 selfloop transitions, 15 changer transitions 0/51 dead transitions. [2023-08-27 08:46:52,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 356 flow [2023-08-27 08:46:52,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 08:46:52,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 08:46:52,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 544 transitions. [2023-08-27 08:46:52,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3930635838150289 [2023-08-27 08:46:52,630 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 544 transitions. [2023-08-27 08:46:52,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 544 transitions. [2023-08-27 08:46:52,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:52,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 544 transitions. [2023-08-27 08:46:52,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.0) internal successors, (544), 8 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,633 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,633 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 194 flow. Second operand 8 states and 544 transitions. [2023-08-27 08:46:52,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 356 flow [2023-08-27 08:46:52,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 51 transitions, 334 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-27 08:46:52,635 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 220 flow [2023-08-27 08:46:52,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=220, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2023-08-27 08:46:52,635 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 17 predicate places. [2023-08-27 08:46:52,635 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 220 flow [2023-08-27 08:46:52,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:52,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:52,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 08:46:52,636 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:52,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:52,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1948177817, now seen corresponding path program 2 times [2023-08-27 08:46:52,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:52,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087397780] [2023-08-27 08:46:52,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:52,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:52,683 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 08:46:52,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:52,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087397780] [2023-08-27 08:46:52,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087397780] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:46:52,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:46:52,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 08:46:52,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77818731] [2023-08-27 08:46:52,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:52,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 08:46:52,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:52,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 08:46:52,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 08:46:52,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 08:46:52,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:52,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 08:46:52,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:52,771 INFO L124 PetriNetUnfolderBase]: 71/124 cut-off events. [2023-08-27 08:46:52,772 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2023-08-27 08:46:52,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 124 events. 71/124 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 296 event pairs, 6 based on Foata normal form. 2/124 useless extension candidates. Maximal degree in co-relation 408. Up to 69 conditions per place. [2023-08-27 08:46:52,772 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 35 selfloop transitions, 16 changer transitions 0/51 dead transitions. [2023-08-27 08:46:52,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 384 flow [2023-08-27 08:46:52,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 08:46:52,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 08:46:52,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 538 transitions. [2023-08-27 08:46:52,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38872832369942195 [2023-08-27 08:46:52,774 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 538 transitions. [2023-08-27 08:46:52,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 538 transitions. [2023-08-27 08:46:52,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:52,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 538 transitions. [2023-08-27 08:46:52,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 67.25) internal successors, (538), 8 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,777 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,777 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 220 flow. Second operand 8 states and 538 transitions. [2023-08-27 08:46:52,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 384 flow [2023-08-27 08:46:52,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 51 transitions, 342 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-27 08:46:52,778 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 229 flow [2023-08-27 08:46:52,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=229, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2023-08-27 08:46:52,779 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 18 predicate places. [2023-08-27 08:46:52,779 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 229 flow [2023-08-27 08:46:52,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:52,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:52,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 08:46:52,780 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:52,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:52,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1948120186, now seen corresponding path program 3 times [2023-08-27 08:46:52,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:52,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735598208] [2023-08-27 08:46:52,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:52,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:52,826 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 08:46:52,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:52,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735598208] [2023-08-27 08:46:52,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735598208] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:46:52,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:46:52,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 08:46:52,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142858619] [2023-08-27 08:46:52,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:52,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 08:46:52,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:52,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 08:46:52,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 08:46:52,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 08:46:52,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 229 flow. Second operand has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:52,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 08:46:52,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:52,911 INFO L124 PetriNetUnfolderBase]: 85/144 cut-off events. [2023-08-27 08:46:52,912 INFO L125 PetriNetUnfolderBase]: For 252/252 co-relation queries the response was YES. [2023-08-27 08:46:52,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 144 events. 85/144 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 350 event pairs, 11 based on Foata normal form. 4/146 useless extension candidates. Maximal degree in co-relation 490. Up to 100 conditions per place. [2023-08-27 08:46:52,913 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 38 selfloop transitions, 16 changer transitions 0/54 dead transitions. [2023-08-27 08:46:52,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 427 flow [2023-08-27 08:46:52,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 08:46:52,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 08:46:52,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 413 transitions. [2023-08-27 08:46:52,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978805394990366 [2023-08-27 08:46:52,914 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 413 transitions. [2023-08-27 08:46:52,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 413 transitions. [2023-08-27 08:46:52,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:52,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 413 transitions. [2023-08-27 08:46:52,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.83333333333333) internal successors, (413), 6 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,916 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,916 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 229 flow. Second operand 6 states and 413 transitions. [2023-08-27 08:46:52,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 427 flow [2023-08-27 08:46:52,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 375 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-27 08:46:52,918 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 275 flow [2023-08-27 08:46:52,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-27 08:46:52,918 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 18 predicate places. [2023-08-27 08:46:52,919 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 275 flow [2023-08-27 08:46:52,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:52,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:52,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 08:46:52,919 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:52,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:52,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1948120157, now seen corresponding path program 3 times [2023-08-27 08:46:52,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:52,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868416231] [2023-08-27 08:46:52,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:52,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:52,970 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 08:46:52,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:52,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868416231] [2023-08-27 08:46:52,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868416231] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:46:52,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:46:52,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 08:46:52,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268365326] [2023-08-27 08:46:52,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:52,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 08:46:52,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:52,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 08:46:52,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 08:46:52,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 08:46:52,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 275 flow. Second operand has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:52,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:52,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 08:46:52,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:53,070 INFO L124 PetriNetUnfolderBase]: 88/149 cut-off events. [2023-08-27 08:46:53,071 INFO L125 PetriNetUnfolderBase]: For 333/333 co-relation queries the response was YES. [2023-08-27 08:46:53,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 149 events. 88/149 cut-off events. For 333/333 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 372 event pairs, 8 based on Foata normal form. 2/149 useless extension candidates. Maximal degree in co-relation 518. Up to 107 conditions per place. [2023-08-27 08:46:53,072 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 42 selfloop transitions, 17 changer transitions 0/59 dead transitions. [2023-08-27 08:46:53,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 474 flow [2023-08-27 08:46:53,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 08:46:53,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 08:46:53,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 542 transitions. [2023-08-27 08:46:53,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916184971098266 [2023-08-27 08:46:53,073 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 542 transitions. [2023-08-27 08:46:53,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 542 transitions. [2023-08-27 08:46:53,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:53,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 542 transitions. [2023-08-27 08:46:53,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 67.75) internal successors, (542), 8 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,076 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,076 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 275 flow. Second operand 8 states and 542 transitions. [2023-08-27 08:46:53,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 474 flow [2023-08-27 08:46:53,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 434 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-08-27 08:46:53,078 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 293 flow [2023-08-27 08:46:53,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=293, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2023-08-27 08:46:53,078 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 24 predicate places. [2023-08-27 08:46:53,078 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 293 flow [2023-08-27 08:46:53,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:53,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:53,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 08:46:53,079 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:53,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:53,079 INFO L85 PathProgramCache]: Analyzing trace with hash 250162263, now seen corresponding path program 1 times [2023-08-27 08:46:53,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:53,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278045261] [2023-08-27 08:46:53,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:53,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:53,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:53,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:53,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278045261] [2023-08-27 08:46:53,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278045261] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:46:53,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:46:53,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:46:53,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59901252] [2023-08-27 08:46:53,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:53,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:46:53,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:53,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:46:53,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:46:53,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 08:46:53,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 293 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:53,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 08:46:53,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:53,183 INFO L124 PetriNetUnfolderBase]: 140/243 cut-off events. [2023-08-27 08:46:53,183 INFO L125 PetriNetUnfolderBase]: For 644/644 co-relation queries the response was YES. [2023-08-27 08:46:53,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 243 events. 140/243 cut-off events. For 644/644 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 780 event pairs, 16 based on Foata normal form. 4/241 useless extension candidates. Maximal degree in co-relation 774. Up to 78 conditions per place. [2023-08-27 08:46:53,185 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 51 selfloop transitions, 34 changer transitions 0/85 dead transitions. [2023-08-27 08:46:53,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 85 transitions, 691 flow [2023-08-27 08:46:53,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 08:46:53,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 08:46:53,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 499 transitions. [2023-08-27 08:46:53,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.412056151940545 [2023-08-27 08:46:53,186 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 499 transitions. [2023-08-27 08:46:53,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 499 transitions. [2023-08-27 08:46:53,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:53,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 499 transitions. [2023-08-27 08:46:53,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.28571428571429) internal successors, (499), 7 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,189 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,189 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 293 flow. Second operand 7 states and 499 transitions. [2023-08-27 08:46:53,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 85 transitions, 691 flow [2023-08-27 08:46:53,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 85 transitions, 633 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-08-27 08:46:53,191 INFO L231 Difference]: Finished difference. Result has 57 places, 62 transitions, 524 flow [2023-08-27 08:46:53,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=524, PETRI_PLACES=57, PETRI_TRANSITIONS=62} [2023-08-27 08:46:53,192 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 29 predicate places. [2023-08-27 08:46:53,192 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 62 transitions, 524 flow [2023-08-27 08:46:53,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:53,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:53,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 08:46:53,192 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:53,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:53,193 INFO L85 PathProgramCache]: Analyzing trace with hash 248778423, now seen corresponding path program 2 times [2023-08-27 08:46:53,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:53,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115637258] [2023-08-27 08:46:53,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:53,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:53,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:53,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:53,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115637258] [2023-08-27 08:46:53,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115637258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:46:53,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:46:53,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:46:53,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861818084] [2023-08-27 08:46:53,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:53,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:46:53,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:53,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:46:53,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:46:53,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 08:46:53,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 62 transitions, 524 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:53,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 08:46:53,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:53,316 INFO L124 PetriNetUnfolderBase]: 155/288 cut-off events. [2023-08-27 08:46:53,317 INFO L125 PetriNetUnfolderBase]: For 1373/1373 co-relation queries the response was YES. [2023-08-27 08:46:53,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1436 conditions, 288 events. 155/288 cut-off events. For 1373/1373 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1069 event pairs, 18 based on Foata normal form. 8/296 useless extension candidates. Maximal degree in co-relation 1083. Up to 80 conditions per place. [2023-08-27 08:46:53,319 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 71 selfloop transitions, 33 changer transitions 0/104 dead transitions. [2023-08-27 08:46:53,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 104 transitions, 987 flow [2023-08-27 08:46:53,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 08:46:53,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 08:46:53,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 580 transitions. [2023-08-27 08:46:53,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4190751445086705 [2023-08-27 08:46:53,320 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 580 transitions. [2023-08-27 08:46:53,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 580 transitions. [2023-08-27 08:46:53,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:53,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 580 transitions. [2023-08-27 08:46:53,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.5) internal successors, (580), 8 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,323 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,323 INFO L175 Difference]: Start difference. First operand has 57 places, 62 transitions, 524 flow. Second operand 8 states and 580 transitions. [2023-08-27 08:46:53,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 104 transitions, 987 flow [2023-08-27 08:46:53,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 104 transitions, 951 flow, removed 18 selfloop flow, removed 0 redundant places. [2023-08-27 08:46:53,328 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 711 flow [2023-08-27 08:46:53,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=711, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2023-08-27 08:46:53,328 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 40 predicate places. [2023-08-27 08:46:53,328 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 711 flow [2023-08-27 08:46:53,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:53,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:53,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 08:46:53,329 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:53,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:53,329 INFO L85 PathProgramCache]: Analyzing trace with hash 248773434, now seen corresponding path program 1 times [2023-08-27 08:46:53,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:53,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664848979] [2023-08-27 08:46:53,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:53,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:53,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:53,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664848979] [2023-08-27 08:46:53,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664848979] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:46:53,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:46:53,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:46:53,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907172708] [2023-08-27 08:46:53,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:53,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:46:53,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:53,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:46:53,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:46:53,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 08:46:53,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 711 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:53,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 08:46:53,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:53,429 INFO L124 PetriNetUnfolderBase]: 164/325 cut-off events. [2023-08-27 08:46:53,430 INFO L125 PetriNetUnfolderBase]: For 1993/1993 co-relation queries the response was YES. [2023-08-27 08:46:53,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1739 conditions, 325 events. 164/325 cut-off events. For 1993/1993 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1331 event pairs, 12 based on Foata normal form. 10/335 useless extension candidates. Maximal degree in co-relation 1427. Up to 217 conditions per place. [2023-08-27 08:46:53,432 INFO L140 encePairwiseOnDemand]: 167/173 looper letters, 74 selfloop transitions, 15 changer transitions 0/89 dead transitions. [2023-08-27 08:46:53,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 89 transitions, 997 flow [2023-08-27 08:46:53,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 08:46:53,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 08:46:53,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 363 transitions. [2023-08-27 08:46:53,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41965317919075146 [2023-08-27 08:46:53,433 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 363 transitions. [2023-08-27 08:46:53,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 363 transitions. [2023-08-27 08:46:53,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:53,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 363 transitions. [2023-08-27 08:46:53,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,435 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,435 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 711 flow. Second operand 5 states and 363 transitions. [2023-08-27 08:46:53,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 89 transitions, 997 flow [2023-08-27 08:46:53,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 89 transitions, 926 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-08-27 08:46:53,442 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 707 flow [2023-08-27 08:46:53,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=707, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2023-08-27 08:46:53,442 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 42 predicate places. [2023-08-27 08:46:53,442 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 707 flow [2023-08-27 08:46:53,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:53,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:53,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 08:46:53,443 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:53,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:53,443 INFO L85 PathProgramCache]: Analyzing trace with hash 248777154, now seen corresponding path program 2 times [2023-08-27 08:46:53,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:53,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462366716] [2023-08-27 08:46:53,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:53,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:53,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:53,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:53,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462366716] [2023-08-27 08:46:53,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462366716] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:46:53,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:46:53,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:46:53,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768045324] [2023-08-27 08:46:53,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:53,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:46:53,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:53,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:46:53,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:46:53,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 08:46:53,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 707 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:53,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 08:46:53,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:53,553 INFO L124 PetriNetUnfolderBase]: 175/354 cut-off events. [2023-08-27 08:46:53,553 INFO L125 PetriNetUnfolderBase]: For 2199/2199 co-relation queries the response was YES. [2023-08-27 08:46:53,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1858 conditions, 354 events. 175/354 cut-off events. For 2199/2199 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1518 event pairs, 8 based on Foata normal form. 4/358 useless extension candidates. Maximal degree in co-relation 1739. Up to 135 conditions per place. [2023-08-27 08:46:53,556 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 63 selfloop transitions, 28 changer transitions 0/91 dead transitions. [2023-08-27 08:46:53,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 91 transitions, 1042 flow [2023-08-27 08:46:53,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 08:46:53,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 08:46:53,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 428 transitions. [2023-08-27 08:46:53,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4123314065510597 [2023-08-27 08:46:53,557 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 428 transitions. [2023-08-27 08:46:53,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 428 transitions. [2023-08-27 08:46:53,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:53,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 428 transitions. [2023-08-27 08:46:53,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.33333333333333) internal successors, (428), 6 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,560 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,560 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 707 flow. Second operand 6 states and 428 transitions. [2023-08-27 08:46:53,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 91 transitions, 1042 flow [2023-08-27 08:46:53,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 91 transitions, 1010 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-27 08:46:53,567 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 783 flow [2023-08-27 08:46:53,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=783, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2023-08-27 08:46:53,568 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 47 predicate places. [2023-08-27 08:46:53,568 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 783 flow [2023-08-27 08:46:53,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:53,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:53,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 08:46:53,568 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:53,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:53,569 INFO L85 PathProgramCache]: Analyzing trace with hash 248783044, now seen corresponding path program 1 times [2023-08-27 08:46:53,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:53,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93073455] [2023-08-27 08:46:53,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:53,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:53,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:53,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:53,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93073455] [2023-08-27 08:46:53,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93073455] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:46:53,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045950113] [2023-08-27 08:46:53,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:53,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:46:53,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:46:53,595 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:46:53,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 08:46:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:53,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 08:46:53,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:46:53,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:53,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:46:53,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:53,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045950113] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 08:46:53,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 08:46:53,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 6 [2023-08-27 08:46:53,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920362900] [2023-08-27 08:46:53,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:53,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:46:53,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:53,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:46:53,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 08:46:53,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 08:46:53,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 783 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:53,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 08:46:53,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:53,825 INFO L124 PetriNetUnfolderBase]: 164/333 cut-off events. [2023-08-27 08:46:53,825 INFO L125 PetriNetUnfolderBase]: For 2492/2492 co-relation queries the response was YES. [2023-08-27 08:46:53,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 333 events. 164/333 cut-off events. For 2492/2492 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1415 event pairs, 24 based on Foata normal form. 6/339 useless extension candidates. Maximal degree in co-relation 1711. Up to 124 conditions per place. [2023-08-27 08:46:53,828 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 66 selfloop transitions, 27 changer transitions 0/93 dead transitions. [2023-08-27 08:46:53,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 93 transitions, 1049 flow [2023-08-27 08:46:53,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 08:46:53,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 08:46:53,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 439 transitions. [2023-08-27 08:46:53,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229287090558767 [2023-08-27 08:46:53,829 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 439 transitions. [2023-08-27 08:46:53,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 439 transitions. [2023-08-27 08:46:53,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:53,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 439 transitions. [2023-08-27 08:46:53,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,831 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,831 INFO L175 Difference]: Start difference. First operand has 75 places, 72 transitions, 783 flow. Second operand 6 states and 439 transitions. [2023-08-27 08:46:53,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 93 transitions, 1049 flow [2023-08-27 08:46:53,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 93 transitions, 1017 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-27 08:46:53,839 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 792 flow [2023-08-27 08:46:53,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=792, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2023-08-27 08:46:53,840 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 52 predicate places. [2023-08-27 08:46:53,840 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 792 flow [2023-08-27 08:46:53,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:53,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:53,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:53,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 08:46:54,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 08:46:54,045 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:54,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:54,046 INFO L85 PathProgramCache]: Analyzing trace with hash 262184373, now seen corresponding path program 3 times [2023-08-27 08:46:54,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:54,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907124638] [2023-08-27 08:46:54,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:54,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:54,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:54,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:54,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907124638] [2023-08-27 08:46:54,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907124638] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:46:54,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:46:54,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:46:54,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125280775] [2023-08-27 08:46:54,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:54,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:46:54,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:54,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:46:54,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:46:54,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 08:46:54,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 792 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:54,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 08:46:54,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:54,150 INFO L124 PetriNetUnfolderBase]: 148/297 cut-off events. [2023-08-27 08:46:54,150 INFO L125 PetriNetUnfolderBase]: For 2410/2410 co-relation queries the response was YES. [2023-08-27 08:46:54,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1694 conditions, 297 events. 148/297 cut-off events. For 2410/2410 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1182 event pairs, 14 based on Foata normal form. 8/305 useless extension candidates. Maximal degree in co-relation 1553. Up to 95 conditions per place. [2023-08-27 08:46:54,152 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 61 selfloop transitions, 26 changer transitions 0/87 dead transitions. [2023-08-27 08:46:54,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 87 transitions, 1067 flow [2023-08-27 08:46:54,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 08:46:54,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 08:46:54,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 429 transitions. [2023-08-27 08:46:54,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41329479768786126 [2023-08-27 08:46:54,154 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 429 transitions. [2023-08-27 08:46:54,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 429 transitions. [2023-08-27 08:46:54,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:54,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 429 transitions. [2023-08-27 08:46:54,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.5) internal successors, (429), 6 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,157 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,157 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 792 flow. Second operand 6 states and 429 transitions. [2023-08-27 08:46:54,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 87 transitions, 1067 flow [2023-08-27 08:46:54,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 87 transitions, 1021 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 08:46:54,169 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 822 flow [2023-08-27 08:46:54,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=822, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2023-08-27 08:46:54,169 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 56 predicate places. [2023-08-27 08:46:54,169 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 822 flow [2023-08-27 08:46:54,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:54,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:54,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 08:46:54,170 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:54,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:54,170 INFO L85 PathProgramCache]: Analyzing trace with hash 263970564, now seen corresponding path program 3 times [2023-08-27 08:46:54,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:54,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575211509] [2023-08-27 08:46:54,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:54,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:54,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:54,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:54,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575211509] [2023-08-27 08:46:54,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575211509] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:46:54,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:46:54,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:46:54,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803068422] [2023-08-27 08:46:54,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:54,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:46:54,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:54,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:46:54,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:46:54,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 08:46:54,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 70 transitions, 822 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:54,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 08:46:54,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:54,304 INFO L124 PetriNetUnfolderBase]: 188/399 cut-off events. [2023-08-27 08:46:54,304 INFO L125 PetriNetUnfolderBase]: For 3104/3104 co-relation queries the response was YES. [2023-08-27 08:46:54,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2272 conditions, 399 events. 188/399 cut-off events. For 3104/3104 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1871 event pairs, 28 based on Foata normal form. 2/401 useless extension candidates. Maximal degree in co-relation 2115. Up to 141 conditions per place. [2023-08-27 08:46:54,307 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 58 selfloop transitions, 48 changer transitions 0/106 dead transitions. [2023-08-27 08:46:54,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 106 transitions, 1383 flow [2023-08-27 08:46:54,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 08:46:54,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 08:46:54,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 495 transitions. [2023-08-27 08:46:54,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4087530966143683 [2023-08-27 08:46:54,308 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 495 transitions. [2023-08-27 08:46:54,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 495 transitions. [2023-08-27 08:46:54,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:54,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 495 transitions. [2023-08-27 08:46:54,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.71428571428571) internal successors, (495), 7 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,310 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,310 INFO L175 Difference]: Start difference. First operand has 84 places, 70 transitions, 822 flow. Second operand 7 states and 495 transitions. [2023-08-27 08:46:54,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 106 transitions, 1383 flow [2023-08-27 08:46:54,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 106 transitions, 1368 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 08:46:54,319 INFO L231 Difference]: Finished difference. Result has 93 places, 86 transitions, 1231 flow [2023-08-27 08:46:54,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1231, PETRI_PLACES=93, PETRI_TRANSITIONS=86} [2023-08-27 08:46:54,319 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 65 predicate places. [2023-08-27 08:46:54,319 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 86 transitions, 1231 flow [2023-08-27 08:46:54,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:54,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:54,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 08:46:54,320 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:54,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:54,320 INFO L85 PathProgramCache]: Analyzing trace with hash 262179384, now seen corresponding path program 4 times [2023-08-27 08:46:54,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:54,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030054924] [2023-08-27 08:46:54,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:54,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:54,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:54,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:54,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030054924] [2023-08-27 08:46:54,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030054924] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:46:54,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:46:54,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:46:54,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930373183] [2023-08-27 08:46:54,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:54,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:46:54,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:54,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:46:54,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:46:54,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 08:46:54,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 86 transitions, 1231 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:54,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 08:46:54,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:54,432 INFO L124 PetriNetUnfolderBase]: 176/373 cut-off events. [2023-08-27 08:46:54,432 INFO L125 PetriNetUnfolderBase]: For 3934/3934 co-relation queries the response was YES. [2023-08-27 08:46:54,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2407 conditions, 373 events. 176/373 cut-off events. For 3934/3934 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1684 event pairs, 49 based on Foata normal form. 10/383 useless extension candidates. Maximal degree in co-relation 2229. Up to 233 conditions per place. [2023-08-27 08:46:54,435 INFO L140 encePairwiseOnDemand]: 167/173 looper letters, 85 selfloop transitions, 19 changer transitions 0/104 dead transitions. [2023-08-27 08:46:54,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 104 transitions, 1503 flow [2023-08-27 08:46:54,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 08:46:54,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 08:46:54,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 367 transitions. [2023-08-27 08:46:54,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42427745664739885 [2023-08-27 08:46:54,436 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 367 transitions. [2023-08-27 08:46:54,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 367 transitions. [2023-08-27 08:46:54,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:54,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 367 transitions. [2023-08-27 08:46:54,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,441 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,441 INFO L175 Difference]: Start difference. First operand has 93 places, 86 transitions, 1231 flow. Second operand 5 states and 367 transitions. [2023-08-27 08:46:54,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 104 transitions, 1503 flow [2023-08-27 08:46:54,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 104 transitions, 1459 flow, removed 17 selfloop flow, removed 1 redundant places. [2023-08-27 08:46:54,452 INFO L231 Difference]: Finished difference. Result has 98 places, 87 transitions, 1250 flow [2023-08-27 08:46:54,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1250, PETRI_PLACES=98, PETRI_TRANSITIONS=87} [2023-08-27 08:46:54,452 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 70 predicate places. [2023-08-27 08:46:54,452 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 87 transitions, 1250 flow [2023-08-27 08:46:54,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:54,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:54,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 08:46:54,453 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:54,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:54,453 INFO L85 PathProgramCache]: Analyzing trace with hash 262183104, now seen corresponding path program 5 times [2023-08-27 08:46:54,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:54,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955516478] [2023-08-27 08:46:54,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:54,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:54,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:54,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:54,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955516478] [2023-08-27 08:46:54,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955516478] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:46:54,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:46:54,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:46:54,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11615135] [2023-08-27 08:46:54,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:54,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:46:54,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:54,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:46:54,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:46:54,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 08:46:54,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 87 transitions, 1250 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:54,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 08:46:54,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:54,579 INFO L124 PetriNetUnfolderBase]: 171/358 cut-off events. [2023-08-27 08:46:54,579 INFO L125 PetriNetUnfolderBase]: For 3430/3430 co-relation queries the response was YES. [2023-08-27 08:46:54,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2365 conditions, 358 events. 171/358 cut-off events. For 3430/3430 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1587 event pairs, 22 based on Foata normal form. 2/360 useless extension candidates. Maximal degree in co-relation 2181. Up to 98 conditions per place. [2023-08-27 08:46:54,581 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 71 selfloop transitions, 38 changer transitions 0/109 dead transitions. [2023-08-27 08:46:54,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 109 transitions, 1560 flow [2023-08-27 08:46:54,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 08:46:54,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 08:46:54,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 570 transitions. [2023-08-27 08:46:54,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41184971098265893 [2023-08-27 08:46:54,583 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 570 transitions. [2023-08-27 08:46:54,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 570 transitions. [2023-08-27 08:46:54,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:54,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 570 transitions. [2023-08-27 08:46:54,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 71.25) internal successors, (570), 8 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,585 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,585 INFO L175 Difference]: Start difference. First operand has 98 places, 87 transitions, 1250 flow. Second operand 8 states and 570 transitions. [2023-08-27 08:46:54,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 109 transitions, 1560 flow [2023-08-27 08:46:54,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 109 transitions, 1533 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-27 08:46:54,596 INFO L231 Difference]: Finished difference. Result has 104 places, 84 transitions, 1261 flow [2023-08-27 08:46:54,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=1185, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1261, PETRI_PLACES=104, PETRI_TRANSITIONS=84} [2023-08-27 08:46:54,597 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 76 predicate places. [2023-08-27 08:46:54,597 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 84 transitions, 1261 flow [2023-08-27 08:46:54,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:54,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:54,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 08:46:54,598 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:54,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:54,598 INFO L85 PathProgramCache]: Analyzing trace with hash 262188994, now seen corresponding path program 2 times [2023-08-27 08:46:54,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:54,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675753476] [2023-08-27 08:46:54,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:54,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:54,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:54,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:54,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675753476] [2023-08-27 08:46:54,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675753476] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:46:54,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421593829] [2023-08-27 08:46:54,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 08:46:54,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:46:54,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:46:54,619 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:46:54,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 08:46:54,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 08:46:54,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:46:54,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 08:46:54,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:46:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:54,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:46:54,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:54,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421593829] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 08:46:54,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 08:46:54,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 6 [2023-08-27 08:46:54,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309199882] [2023-08-27 08:46:54,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:54,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:46:54,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:54,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:46:54,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 08:46:54,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 08:46:54,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 84 transitions, 1261 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:54,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 08:46:54,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:54,780 INFO L124 PetriNetUnfolderBase]: 160/337 cut-off events. [2023-08-27 08:46:54,780 INFO L125 PetriNetUnfolderBase]: For 3522/3522 co-relation queries the response was YES. [2023-08-27 08:46:54,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2253 conditions, 337 events. 160/337 cut-off events. For 3522/3522 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1464 event pairs, 14 based on Foata normal form. 6/343 useless extension candidates. Maximal degree in co-relation 2087. Up to 149 conditions per place. [2023-08-27 08:46:54,782 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 63 selfloop transitions, 29 changer transitions 0/92 dead transitions. [2023-08-27 08:46:54,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 92 transitions, 1433 flow [2023-08-27 08:46:54,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 08:46:54,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 08:46:54,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 360 transitions. [2023-08-27 08:46:54,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161849710982659 [2023-08-27 08:46:54,783 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 360 transitions. [2023-08-27 08:46:54,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 360 transitions. [2023-08-27 08:46:54,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:54,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 360 transitions. [2023-08-27 08:46:54,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.0) internal successors, (360), 5 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,785 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,785 INFO L175 Difference]: Start difference. First operand has 104 places, 84 transitions, 1261 flow. Second operand 5 states and 360 transitions. [2023-08-27 08:46:54,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 92 transitions, 1433 flow [2023-08-27 08:46:54,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 92 transitions, 1351 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-27 08:46:54,795 INFO L231 Difference]: Finished difference. Result has 102 places, 79 transitions, 1145 flow [2023-08-27 08:46:54,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1145, PETRI_PLACES=102, PETRI_TRANSITIONS=79} [2023-08-27 08:46:54,795 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 74 predicate places. [2023-08-27 08:46:54,795 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 79 transitions, 1145 flow [2023-08-27 08:46:54,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:54,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:54,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:54,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 08:46:55,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-27 08:46:55,002 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:55,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:55,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1920685740, now seen corresponding path program 1 times [2023-08-27 08:46:55,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:55,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712943454] [2023-08-27 08:46:55,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:55,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:55,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:55,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712943454] [2023-08-27 08:46:55,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712943454] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:46:55,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740179112] [2023-08-27 08:46:55,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:55,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:46:55,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:46:55,061 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:46:55,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 08:46:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:55,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 08:46:55,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:46:55,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:55,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:46:55,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:55,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740179112] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:46:55,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:46:55,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-27 08:46:55,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987543974] [2023-08-27 08:46:55,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:46:55,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 08:46:55,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:55,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 08:46:55,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-08-27 08:46:55,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 08:46:55,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 79 transitions, 1145 flow. Second operand has 20 states, 20 states have (on average 63.5) internal successors, (1270), 20 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:55,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:55,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 08:46:55,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:55,676 INFO L124 PetriNetUnfolderBase]: 156/359 cut-off events. [2023-08-27 08:46:55,676 INFO L125 PetriNetUnfolderBase]: For 3179/3179 co-relation queries the response was YES. [2023-08-27 08:46:55,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2225 conditions, 359 events. 156/359 cut-off events. For 3179/3179 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1715 event pairs, 0 based on Foata normal form. 18/377 useless extension candidates. Maximal degree in co-relation 2045. Up to 69 conditions per place. [2023-08-27 08:46:55,679 INFO L140 encePairwiseOnDemand]: 164/173 looper letters, 76 selfloop transitions, 65 changer transitions 0/141 dead transitions. [2023-08-27 08:46:55,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 141 transitions, 1687 flow [2023-08-27 08:46:55,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 08:46:55,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 08:46:55,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1543 transitions. [2023-08-27 08:46:55,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38778587584820307 [2023-08-27 08:46:55,681 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1543 transitions. [2023-08-27 08:46:55,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1543 transitions. [2023-08-27 08:46:55,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:55,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1543 transitions. [2023-08-27 08:46:55,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 67.08695652173913) internal successors, (1543), 23 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:55,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 173.0) internal successors, (4152), 24 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:55,687 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 173.0) internal successors, (4152), 24 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:55,687 INFO L175 Difference]: Start difference. First operand has 102 places, 79 transitions, 1145 flow. Second operand 23 states and 1543 transitions. [2023-08-27 08:46:55,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 141 transitions, 1687 flow [2023-08-27 08:46:55,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 141 transitions, 1583 flow, removed 16 selfloop flow, removed 6 redundant places. [2023-08-27 08:46:55,697 INFO L231 Difference]: Finished difference. Result has 118 places, 82 transitions, 1205 flow [2023-08-27 08:46:55,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1205, PETRI_PLACES=118, PETRI_TRANSITIONS=82} [2023-08-27 08:46:55,698 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 90 predicate places. [2023-08-27 08:46:55,698 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 82 transitions, 1205 flow [2023-08-27 08:46:55,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 63.5) internal successors, (1270), 20 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:55,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:55,698 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:55,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 08:46:55,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:46:55,903 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:55,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:55,903 INFO L85 PathProgramCache]: Analyzing trace with hash -255361630, now seen corresponding path program 1 times [2023-08-27 08:46:55,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:55,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330518146] [2023-08-27 08:46:55,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:55,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:55,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:55,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:55,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330518146] [2023-08-27 08:46:55,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330518146] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:46:55,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440586815] [2023-08-27 08:46:55,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:55,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:46:55,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:46:55,940 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:46:55,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 08:46:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:55,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 08:46:55,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:46:55,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:55,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:46:56,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:56,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440586815] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:46:56,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:46:56,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-27 08:46:56,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478020309] [2023-08-27 08:46:56,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:46:56,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 08:46:56,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:56,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 08:46:56,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-08-27 08:46:56,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 08:46:56,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 82 transitions, 1205 flow. Second operand has 11 states, 11 states have (on average 65.45454545454545) internal successors, (720), 11 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:56,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:56,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 08:46:56,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:56,229 INFO L124 PetriNetUnfolderBase]: 184/431 cut-off events. [2023-08-27 08:46:56,230 INFO L125 PetriNetUnfolderBase]: For 3389/3389 co-relation queries the response was YES. [2023-08-27 08:46:56,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2694 conditions, 431 events. 184/431 cut-off events. For 3389/3389 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2187 event pairs, 14 based on Foata normal form. 4/435 useless extension candidates. Maximal degree in co-relation 2414. Up to 77 conditions per place. [2023-08-27 08:46:56,232 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 77 selfloop transitions, 58 changer transitions 0/135 dead transitions. [2023-08-27 08:46:56,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 135 transitions, 1871 flow [2023-08-27 08:46:56,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 08:46:56,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 08:46:56,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 855 transitions. [2023-08-27 08:46:56,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41184971098265893 [2023-08-27 08:46:56,234 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 855 transitions. [2023-08-27 08:46:56,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 855 transitions. [2023-08-27 08:46:56,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:56,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 855 transitions. [2023-08-27 08:46:56,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 71.25) internal successors, (855), 12 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:56,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 173.0) internal successors, (2249), 13 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:56,236 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 173.0) internal successors, (2249), 13 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:56,237 INFO L175 Difference]: Start difference. First operand has 118 places, 82 transitions, 1205 flow. Second operand 12 states and 855 transitions. [2023-08-27 08:46:56,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 135 transitions, 1871 flow [2023-08-27 08:46:56,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 135 transitions, 1647 flow, removed 28 selfloop flow, removed 16 redundant places. [2023-08-27 08:46:56,247 INFO L231 Difference]: Finished difference. Result has 118 places, 93 transitions, 1359 flow [2023-08-27 08:46:56,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1359, PETRI_PLACES=118, PETRI_TRANSITIONS=93} [2023-08-27 08:46:56,248 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 90 predicate places. [2023-08-27 08:46:56,248 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 93 transitions, 1359 flow [2023-08-27 08:46:56,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.45454545454545) internal successors, (720), 11 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:56,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:56,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:56,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 08:46:56,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:46:56,452 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:56,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:56,453 INFO L85 PathProgramCache]: Analyzing trace with hash -839521477, now seen corresponding path program 2 times [2023-08-27 08:46:56,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:56,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584815650] [2023-08-27 08:46:56,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:56,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:56,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:56,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:56,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584815650] [2023-08-27 08:46:56,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584815650] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:46:56,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274078480] [2023-08-27 08:46:56,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 08:46:56,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:46:56,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:46:56,506 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:46:56,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 08:46:56,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 08:46:56,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:46:56,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 08:46:56,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:46:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:56,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:46:56,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:56,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274078480] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:46:56,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:46:56,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-27 08:46:56,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967050378] [2023-08-27 08:46:56,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:46:56,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 08:46:56,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:56,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 08:46:56,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2023-08-27 08:46:56,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 08:46:56,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 93 transitions, 1359 flow. Second operand has 20 states, 20 states have (on average 63.5) internal successors, (1270), 20 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:56,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:56,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 08:46:56,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:57,001 INFO L124 PetriNetUnfolderBase]: 202/475 cut-off events. [2023-08-27 08:46:57,001 INFO L125 PetriNetUnfolderBase]: For 4246/4246 co-relation queries the response was YES. [2023-08-27 08:46:57,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2963 conditions, 475 events. 202/475 cut-off events. For 4246/4246 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2488 event pairs, 4 based on Foata normal form. 10/485 useless extension candidates. Maximal degree in co-relation 2681. Up to 100 conditions per place. [2023-08-27 08:46:57,004 INFO L140 encePairwiseOnDemand]: 164/173 looper letters, 77 selfloop transitions, 68 changer transitions 0/145 dead transitions. [2023-08-27 08:46:57,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 145 transitions, 2027 flow [2023-08-27 08:46:57,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 08:46:57,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 08:46:57,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1016 transitions. [2023-08-27 08:46:57,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3915221579961464 [2023-08-27 08:46:57,005 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1016 transitions. [2023-08-27 08:46:57,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1016 transitions. [2023-08-27 08:46:57,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:57,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1016 transitions. [2023-08-27 08:46:57,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 67.73333333333333) internal successors, (1016), 15 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:57,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 173.0) internal successors, (2768), 16 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:57,009 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 173.0) internal successors, (2768), 16 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:57,009 INFO L175 Difference]: Start difference. First operand has 118 places, 93 transitions, 1359 flow. Second operand 15 states and 1016 transitions. [2023-08-27 08:46:57,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 145 transitions, 2027 flow [2023-08-27 08:46:57,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 145 transitions, 1913 flow, removed 28 selfloop flow, removed 3 redundant places. [2023-08-27 08:46:57,021 INFO L231 Difference]: Finished difference. Result has 133 places, 102 transitions, 1590 flow [2023-08-27 08:46:57,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1590, PETRI_PLACES=133, PETRI_TRANSITIONS=102} [2023-08-27 08:46:57,022 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 105 predicate places. [2023-08-27 08:46:57,022 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 102 transitions, 1590 flow [2023-08-27 08:46:57,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 63.5) internal successors, (1270), 20 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:57,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:57,023 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:57,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 08:46:57,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-27 08:46:57,229 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:57,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:57,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1437766420, now seen corresponding path program 3 times [2023-08-27 08:46:57,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:57,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602725500] [2023-08-27 08:46:57,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:57,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:57,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:46:57,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:57,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602725500] [2023-08-27 08:46:57,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602725500] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:46:57,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056878926] [2023-08-27 08:46:57,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 08:46:57,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:46:57,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:46:57,263 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:46:57,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 08:46:57,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 08:46:57,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:46:57,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 08:46:57,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:46:57,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 08:46:57,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:46:57,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:57,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056878926] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:46:57,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:46:57,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2023-08-27 08:46:57,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48797174] [2023-08-27 08:46:57,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:46:57,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 08:46:57,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:57,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 08:46:57,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-08-27 08:46:57,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 173 [2023-08-27 08:46:57,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 102 transitions, 1590 flow. Second operand has 10 states, 10 states have (on average 65.6) internal successors, (656), 10 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:57,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:57,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 173 [2023-08-27 08:46:57,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:57,521 INFO L124 PetriNetUnfolderBase]: 261/630 cut-off events. [2023-08-27 08:46:57,521 INFO L125 PetriNetUnfolderBase]: For 6902/6902 co-relation queries the response was YES. [2023-08-27 08:46:57,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4139 conditions, 630 events. 261/630 cut-off events. For 6902/6902 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3659 event pairs, 22 based on Foata normal form. 4/634 useless extension candidates. Maximal degree in co-relation 3849. Up to 225 conditions per place. [2023-08-27 08:46:57,525 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 85 selfloop transitions, 72 changer transitions 0/157 dead transitions. [2023-08-27 08:46:57,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 157 transitions, 2624 flow [2023-08-27 08:46:57,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 08:46:57,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 08:46:57,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 635 transitions. [2023-08-27 08:46:57,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40783558124598585 [2023-08-27 08:46:57,526 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 635 transitions. [2023-08-27 08:46:57,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 635 transitions. [2023-08-27 08:46:57,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:57,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 635 transitions. [2023-08-27 08:46:57,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 70.55555555555556) internal successors, (635), 9 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:57,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:57,528 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:57,528 INFO L175 Difference]: Start difference. First operand has 133 places, 102 transitions, 1590 flow. Second operand 9 states and 635 transitions. [2023-08-27 08:46:57,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 157 transitions, 2624 flow [2023-08-27 08:46:57,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 157 transitions, 2482 flow, removed 45 selfloop flow, removed 4 redundant places. [2023-08-27 08:46:57,547 INFO L231 Difference]: Finished difference. Result has 143 places, 130 transitions, 2302 flow [2023-08-27 08:46:57,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2302, PETRI_PLACES=143, PETRI_TRANSITIONS=130} [2023-08-27 08:46:57,547 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 115 predicate places. [2023-08-27 08:46:57,547 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 130 transitions, 2302 flow [2023-08-27 08:46:57,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.6) internal successors, (656), 10 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:57,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:57,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:57,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 08:46:57,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 08:46:57,754 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:57,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:57,755 INFO L85 PathProgramCache]: Analyzing trace with hash -877659847, now seen corresponding path program 4 times [2023-08-27 08:46:57,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:57,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383356036] [2023-08-27 08:46:57,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:57,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:57,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:57,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383356036] [2023-08-27 08:46:57,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383356036] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:46:57,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156025432] [2023-08-27 08:46:57,801 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 08:46:57,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:46:57,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:46:57,802 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:46:57,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 08:46:57,847 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 08:46:57,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:46:57,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 08:46:57,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:46:57,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:57,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:46:57,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:57,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156025432] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:46:57,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:46:57,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-27 08:46:57,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889650490] [2023-08-27 08:46:57,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:46:57,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 08:46:57,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:57,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 08:46:57,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2023-08-27 08:46:57,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 08:46:57,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 130 transitions, 2302 flow. Second operand has 19 states, 19 states have (on average 63.578947368421055) internal successors, (1208), 19 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:57,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:57,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 08:46:57,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:58,478 INFO L124 PetriNetUnfolderBase]: 302/689 cut-off events. [2023-08-27 08:46:58,478 INFO L125 PetriNetUnfolderBase]: For 10281/10281 co-relation queries the response was YES. [2023-08-27 08:46:58,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4957 conditions, 689 events. 302/689 cut-off events. For 10281/10281 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3901 event pairs, 7 based on Foata normal form. 10/699 useless extension candidates. Maximal degree in co-relation 4522. Up to 144 conditions per place. [2023-08-27 08:46:58,483 INFO L140 encePairwiseOnDemand]: 163/173 looper letters, 82 selfloop transitions, 124 changer transitions 0/206 dead transitions. [2023-08-27 08:46:58,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 206 transitions, 3439 flow [2023-08-27 08:46:58,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-27 08:46:58,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-27 08:46:58,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1678 transitions. [2023-08-27 08:46:58,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38797687861271674 [2023-08-27 08:46:58,487 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1678 transitions. [2023-08-27 08:46:58,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1678 transitions. [2023-08-27 08:46:58,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:58,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1678 transitions. [2023-08-27 08:46:58,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 67.12) internal successors, (1678), 25 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:58,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 173.0) internal successors, (4498), 26 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:58,493 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 173.0) internal successors, (4498), 26 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:58,493 INFO L175 Difference]: Start difference. First operand has 143 places, 130 transitions, 2302 flow. Second operand 25 states and 1678 transitions. [2023-08-27 08:46:58,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 206 transitions, 3439 flow [2023-08-27 08:46:58,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 206 transitions, 3346 flow, removed 44 selfloop flow, removed 1 redundant places. [2023-08-27 08:46:58,525 INFO L231 Difference]: Finished difference. Result has 175 places, 156 transitions, 3067 flow [2023-08-27 08:46:58,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=2182, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3067, PETRI_PLACES=175, PETRI_TRANSITIONS=156} [2023-08-27 08:46:58,525 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 147 predicate places. [2023-08-27 08:46:58,525 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 156 transitions, 3067 flow [2023-08-27 08:46:58,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 63.578947368421055) internal successors, (1208), 19 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:58,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:58,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:58,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 08:46:58,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:46:58,730 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:58,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:58,730 INFO L85 PathProgramCache]: Analyzing trace with hash -462079117, now seen corresponding path program 5 times [2023-08-27 08:46:58,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:58,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207197279] [2023-08-27 08:46:58,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:58,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:58,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:58,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:58,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207197279] [2023-08-27 08:46:58,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207197279] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:46:58,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975805041] [2023-08-27 08:46:58,777 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 08:46:58,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:46:58,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:46:58,777 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:46:58,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 08:46:58,863 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 08:46:58,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:46:58,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 08:46:58,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:46:58,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:58,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:46:58,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:46:58,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975805041] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:46:58,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:46:58,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 14 [2023-08-27 08:46:58,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618475668] [2023-08-27 08:46:58,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:46:58,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 08:46:58,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:58,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 08:46:58,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-08-27 08:46:58,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 08:46:58,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 156 transitions, 3067 flow. Second operand has 16 states, 16 states have (on average 63.875) internal successors, (1022), 16 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:58,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:58,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 08:46:58,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:59,286 INFO L124 PetriNetUnfolderBase]: 302/701 cut-off events. [2023-08-27 08:46:59,286 INFO L125 PetriNetUnfolderBase]: For 13388/13388 co-relation queries the response was YES. [2023-08-27 08:46:59,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5470 conditions, 701 events. 302/701 cut-off events. For 13388/13388 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4067 event pairs, 11 based on Foata normal form. 14/715 useless extension candidates. Maximal degree in co-relation 5217. Up to 180 conditions per place. [2023-08-27 08:46:59,292 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 101 selfloop transitions, 94 changer transitions 0/195 dead transitions. [2023-08-27 08:46:59,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 195 transitions, 3727 flow [2023-08-27 08:46:59,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 08:46:59,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 08:46:59,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1147 transitions. [2023-08-27 08:46:59,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39000340020401225 [2023-08-27 08:46:59,294 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1147 transitions. [2023-08-27 08:46:59,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1147 transitions. [2023-08-27 08:46:59,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:59,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1147 transitions. [2023-08-27 08:46:59,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 67.47058823529412) internal successors, (1147), 17 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:59,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 173.0) internal successors, (3114), 18 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:59,299 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 173.0) internal successors, (3114), 18 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:59,299 INFO L175 Difference]: Start difference. First operand has 175 places, 156 transitions, 3067 flow. Second operand 17 states and 1147 transitions. [2023-08-27 08:46:59,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 195 transitions, 3727 flow [2023-08-27 08:46:59,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 195 transitions, 3367 flow, removed 96 selfloop flow, removed 11 redundant places. [2023-08-27 08:46:59,339 INFO L231 Difference]: Finished difference. Result has 179 places, 155 transitions, 2881 flow [2023-08-27 08:46:59,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=2636, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2881, PETRI_PLACES=179, PETRI_TRANSITIONS=155} [2023-08-27 08:46:59,342 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 151 predicate places. [2023-08-27 08:46:59,342 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 155 transitions, 2881 flow [2023-08-27 08:46:59,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 63.875) internal successors, (1022), 16 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:59,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:59,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:59,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 08:46:59,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-27 08:46:59,547 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:59,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:59,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1481300573, now seen corresponding path program 1 times [2023-08-27 08:46:59,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:59,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366637944] [2023-08-27 08:46:59,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:59,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:46:59,747 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 08:46:59,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:46:59,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366637944] [2023-08-27 08:46:59,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366637944] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:46:59,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:46:59,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 08:46:59,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547490997] [2023-08-27 08:46:59,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:46:59,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 08:46:59,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:46:59,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 08:46:59,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 08:46:59,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 173 [2023-08-27 08:46:59,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 155 transitions, 2881 flow. Second operand has 8 states, 8 states have (on average 58.625) internal successors, (469), 8 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:59,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:46:59,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 173 [2023-08-27 08:46:59,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:46:59,894 INFO L124 PetriNetUnfolderBase]: 301/705 cut-off events. [2023-08-27 08:46:59,894 INFO L125 PetriNetUnfolderBase]: For 12127/12127 co-relation queries the response was YES. [2023-08-27 08:46:59,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5349 conditions, 705 events. 301/705 cut-off events. For 12127/12127 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4107 event pairs, 4 based on Foata normal form. 1/706 useless extension candidates. Maximal degree in co-relation 5100. Up to 382 conditions per place. [2023-08-27 08:46:59,899 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 116 selfloop transitions, 48 changer transitions 9/173 dead transitions. [2023-08-27 08:46:59,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 173 transitions, 3356 flow [2023-08-27 08:46:59,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 08:46:59,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 08:46:59,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 442 transitions. [2023-08-27 08:46:59,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36498761354252685 [2023-08-27 08:46:59,900 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 442 transitions. [2023-08-27 08:46:59,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 442 transitions. [2023-08-27 08:46:59,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:46:59,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 442 transitions. [2023-08-27 08:46:59,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 63.142857142857146) internal successors, (442), 7 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:59,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:59,902 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:59,902 INFO L175 Difference]: Start difference. First operand has 179 places, 155 transitions, 2881 flow. Second operand 7 states and 442 transitions. [2023-08-27 08:46:59,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 173 transitions, 3356 flow [2023-08-27 08:46:59,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 173 transitions, 3227 flow, removed 2 selfloop flow, removed 12 redundant places. [2023-08-27 08:46:59,970 INFO L231 Difference]: Finished difference. Result has 174 places, 150 transitions, 2752 flow [2023-08-27 08:46:59,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=2752, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2752, PETRI_PLACES=174, PETRI_TRANSITIONS=150} [2023-08-27 08:46:59,971 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 146 predicate places. [2023-08-27 08:46:59,971 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 150 transitions, 2752 flow [2023-08-27 08:46:59,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 58.625) internal successors, (469), 8 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:46:59,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:46:59,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:46:59,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-27 08:46:59,972 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:46:59,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:46:59,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1705253575, now seen corresponding path program 2 times [2023-08-27 08:46:59,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:46:59,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141086094] [2023-08-27 08:46:59,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:46:59,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:46:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:00,054 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 08:47:00,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:00,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141086094] [2023-08-27 08:47:00,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141086094] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:00,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:00,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:47:00,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292450239] [2023-08-27 08:47:00,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:00,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 08:47:00,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:00,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 08:47:00,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 08:47:00,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 08:47:00,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 150 transitions, 2752 flow. Second operand has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:00,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:00,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 08:47:00,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:00,208 INFO L124 PetriNetUnfolderBase]: 289/673 cut-off events. [2023-08-27 08:47:00,208 INFO L125 PetriNetUnfolderBase]: For 12256/12256 co-relation queries the response was YES. [2023-08-27 08:47:00,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5169 conditions, 673 events. 289/673 cut-off events. For 12256/12256 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3883 event pairs, 26 based on Foata normal form. 1/674 useless extension candidates. Maximal degree in co-relation 5124. Up to 517 conditions per place. [2023-08-27 08:47:00,213 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 114 selfloop transitions, 46 changer transitions 6/166 dead transitions. [2023-08-27 08:47:00,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 166 transitions, 3208 flow [2023-08-27 08:47:00,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 08:47:00,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 08:47:00,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 479 transitions. [2023-08-27 08:47:00,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3955408753096614 [2023-08-27 08:47:00,214 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 479 transitions. [2023-08-27 08:47:00,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 479 transitions. [2023-08-27 08:47:00,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:00,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 479 transitions. [2023-08-27 08:47:00,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.42857142857143) internal successors, (479), 7 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:00,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:00,216 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:00,216 INFO L175 Difference]: Start difference. First operand has 174 places, 150 transitions, 2752 flow. Second operand 7 states and 479 transitions. [2023-08-27 08:47:00,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 166 transitions, 3208 flow [2023-08-27 08:47:00,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 166 transitions, 3083 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-08-27 08:47:00,248 INFO L231 Difference]: Finished difference. Result has 170 places, 148 transitions, 2681 flow [2023-08-27 08:47:00,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=2629, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2681, PETRI_PLACES=170, PETRI_TRANSITIONS=148} [2023-08-27 08:47:00,249 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 142 predicate places. [2023-08-27 08:47:00,249 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 148 transitions, 2681 flow [2023-08-27 08:47:00,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:00,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:00,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:00,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-27 08:47:00,249 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:00,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:00,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1735813375, now seen corresponding path program 3 times [2023-08-27 08:47:00,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:00,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550393757] [2023-08-27 08:47:00,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:00,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:00,329 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 08:47:00,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:00,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550393757] [2023-08-27 08:47:00,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550393757] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:00,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:00,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:47:00,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461940324] [2023-08-27 08:47:00,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:00,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 08:47:00,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:00,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 08:47:00,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 08:47:00,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 08:47:00,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 148 transitions, 2681 flow. Second operand has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:00,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:00,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 08:47:00,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:00,472 INFO L124 PetriNetUnfolderBase]: 285/659 cut-off events. [2023-08-27 08:47:00,472 INFO L125 PetriNetUnfolderBase]: For 11645/11645 co-relation queries the response was YES. [2023-08-27 08:47:00,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5012 conditions, 659 events. 285/659 cut-off events. For 11645/11645 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3720 event pairs, 26 based on Foata normal form. 1/660 useless extension candidates. Maximal degree in co-relation 4968. Up to 512 conditions per place. [2023-08-27 08:47:00,476 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 111 selfloop transitions, 44 changer transitions 7/162 dead transitions. [2023-08-27 08:47:00,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 162 transitions, 3122 flow [2023-08-27 08:47:00,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 08:47:00,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 08:47:00,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 476 transitions. [2023-08-27 08:47:00,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3930635838150289 [2023-08-27 08:47:00,477 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 476 transitions. [2023-08-27 08:47:00,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 476 transitions. [2023-08-27 08:47:00,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:00,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 476 transitions. [2023-08-27 08:47:00,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:00,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:00,479 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:00,479 INFO L175 Difference]: Start difference. First operand has 170 places, 148 transitions, 2681 flow. Second operand 7 states and 476 transitions. [2023-08-27 08:47:00,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 162 transitions, 3122 flow [2023-08-27 08:47:00,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 162 transitions, 2987 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-08-27 08:47:00,510 INFO L231 Difference]: Finished difference. Result has 167 places, 146 transitions, 2599 flow [2023-08-27 08:47:00,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=2550, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2599, PETRI_PLACES=167, PETRI_TRANSITIONS=146} [2023-08-27 08:47:00,510 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 139 predicate places. [2023-08-27 08:47:00,510 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 146 transitions, 2599 flow [2023-08-27 08:47:00,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:00,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:00,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:00,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-27 08:47:00,511 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:00,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:00,511 INFO L85 PathProgramCache]: Analyzing trace with hash -903842691, now seen corresponding path program 4 times [2023-08-27 08:47:00,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:00,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345941774] [2023-08-27 08:47:00,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:00,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:00,590 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 08:47:00,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:00,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345941774] [2023-08-27 08:47:00,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345941774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:00,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:00,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:47:00,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209381182] [2023-08-27 08:47:00,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:00,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 08:47:00,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:00,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 08:47:00,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 08:47:00,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 08:47:00,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 146 transitions, 2599 flow. Second operand has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:00,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:00,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 08:47:00,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:00,738 INFO L124 PetriNetUnfolderBase]: 283/648 cut-off events. [2023-08-27 08:47:00,738 INFO L125 PetriNetUnfolderBase]: For 11573/11573 co-relation queries the response was YES. [2023-08-27 08:47:00,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4855 conditions, 648 events. 283/648 cut-off events. For 11573/11573 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3633 event pairs, 30 based on Foata normal form. 2/650 useless extension candidates. Maximal degree in co-relation 4812. Up to 377 conditions per place. [2023-08-27 08:47:00,742 INFO L140 encePairwiseOnDemand]: 166/173 looper letters, 86 selfloop transitions, 64 changer transitions 8/158 dead transitions. [2023-08-27 08:47:00,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 158 transitions, 3017 flow [2023-08-27 08:47:00,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 08:47:00,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 08:47:00,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 471 transitions. [2023-08-27 08:47:00,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38893476465730803 [2023-08-27 08:47:00,743 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 471 transitions. [2023-08-27 08:47:00,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 471 transitions. [2023-08-27 08:47:00,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:00,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 471 transitions. [2023-08-27 08:47:00,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 67.28571428571429) internal successors, (471), 7 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:00,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:00,745 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:00,745 INFO L175 Difference]: Start difference. First operand has 167 places, 146 transitions, 2599 flow. Second operand 7 states and 471 transitions. [2023-08-27 08:47:00,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 158 transitions, 3017 flow [2023-08-27 08:47:00,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 158 transitions, 2927 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-27 08:47:00,774 INFO L231 Difference]: Finished difference. Result has 165 places, 142 transitions, 2567 flow [2023-08-27 08:47:00,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=2509, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2567, PETRI_PLACES=165, PETRI_TRANSITIONS=142} [2023-08-27 08:47:00,775 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 137 predicate places. [2023-08-27 08:47:00,775 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 142 transitions, 2567 flow [2023-08-27 08:47:00,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:00,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:00,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:00,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-27 08:47:00,775 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:00,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:00,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1680511297, now seen corresponding path program 5 times [2023-08-27 08:47:00,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:00,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810926839] [2023-08-27 08:47:00,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:00,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:00,862 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 08:47:00,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:00,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810926839] [2023-08-27 08:47:00,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810926839] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:00,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:00,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:47:00,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621217375] [2023-08-27 08:47:00,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:00,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 08:47:00,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:00,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 08:47:00,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 08:47:00,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 08:47:00,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 142 transitions, 2567 flow. Second operand has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:00,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:00,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 08:47:00,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:01,011 INFO L124 PetriNetUnfolderBase]: 279/628 cut-off events. [2023-08-27 08:47:01,011 INFO L125 PetriNetUnfolderBase]: For 11818/11818 co-relation queries the response was YES. [2023-08-27 08:47:01,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4789 conditions, 628 events. 279/628 cut-off events. For 11818/11818 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3431 event pairs, 30 based on Foata normal form. 2/630 useless extension candidates. Maximal degree in co-relation 4746. Up to 472 conditions per place. [2023-08-27 08:47:01,014 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 104 selfloop transitions, 43 changer transitions 7/154 dead transitions. [2023-08-27 08:47:01,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 154 transitions, 2977 flow [2023-08-27 08:47:01,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 08:47:01,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 08:47:01,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 475 transitions. [2023-08-27 08:47:01,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3922378199834847 [2023-08-27 08:47:01,015 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 475 transitions. [2023-08-27 08:47:01,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 475 transitions. [2023-08-27 08:47:01,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:01,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 475 transitions. [2023-08-27 08:47:01,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:01,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:01,017 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:01,017 INFO L175 Difference]: Start difference. First operand has 165 places, 142 transitions, 2567 flow. Second operand 7 states and 475 transitions. [2023-08-27 08:47:01,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 154 transitions, 2977 flow [2023-08-27 08:47:01,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 154 transitions, 2825 flow, removed 1 selfloop flow, removed 9 redundant places. [2023-08-27 08:47:01,046 INFO L231 Difference]: Finished difference. Result has 162 places, 139 transitions, 2441 flow [2023-08-27 08:47:01,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=2415, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2441, PETRI_PLACES=162, PETRI_TRANSITIONS=139} [2023-08-27 08:47:01,047 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 134 predicate places. [2023-08-27 08:47:01,047 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 139 transitions, 2441 flow [2023-08-27 08:47:01,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:01,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:01,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:01,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-27 08:47:01,047 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:01,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:01,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1708216927, now seen corresponding path program 6 times [2023-08-27 08:47:01,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:01,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510132280] [2023-08-27 08:47:01,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:01,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:01,129 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 08:47:01,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:01,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510132280] [2023-08-27 08:47:01,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510132280] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:01,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:01,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:47:01,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325688518] [2023-08-27 08:47:01,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:01,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 08:47:01,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:01,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 08:47:01,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 08:47:01,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 08:47:01,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 139 transitions, 2441 flow. Second operand has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:01,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:01,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 08:47:01,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:01,276 INFO L124 PetriNetUnfolderBase]: 276/611 cut-off events. [2023-08-27 08:47:01,276 INFO L125 PetriNetUnfolderBase]: For 11350/11350 co-relation queries the response was YES. [2023-08-27 08:47:01,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4605 conditions, 611 events. 276/611 cut-off events. For 11350/11350 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3266 event pairs, 26 based on Foata normal form. 2/613 useless extension candidates. Maximal degree in co-relation 4562. Up to 447 conditions per place. [2023-08-27 08:47:01,280 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 102 selfloop transitions, 40 changer transitions 11/153 dead transitions. [2023-08-27 08:47:01,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 153 transitions, 2854 flow [2023-08-27 08:47:01,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 08:47:01,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 08:47:01,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 476 transitions. [2023-08-27 08:47:01,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3930635838150289 [2023-08-27 08:47:01,281 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 476 transitions. [2023-08-27 08:47:01,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 476 transitions. [2023-08-27 08:47:01,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:01,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 476 transitions. [2023-08-27 08:47:01,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:01,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:01,282 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:01,282 INFO L175 Difference]: Start difference. First operand has 162 places, 139 transitions, 2441 flow. Second operand 7 states and 476 transitions. [2023-08-27 08:47:01,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 153 transitions, 2854 flow [2023-08-27 08:47:01,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 153 transitions, 2711 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-27 08:47:01,309 INFO L231 Difference]: Finished difference. Result has 159 places, 135 transitions, 2304 flow [2023-08-27 08:47:01,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=2298, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2304, PETRI_PLACES=159, PETRI_TRANSITIONS=135} [2023-08-27 08:47:01,309 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 131 predicate places. [2023-08-27 08:47:01,309 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 135 transitions, 2304 flow [2023-08-27 08:47:01,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:01,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:01,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:01,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-27 08:47:01,310 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:01,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:01,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1021697265, now seen corresponding path program 1 times [2023-08-27 08:47:01,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:01,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484316135] [2023-08-27 08:47:01,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:01,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:01,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:01,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:01,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484316135] [2023-08-27 08:47:01,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484316135] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:47:01,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248977101] [2023-08-27 08:47:01,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:01,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:47:01,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:47:01,397 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:47:01,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 08:47:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:01,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 08:47:01,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:47:01,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:01,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:47:01,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:01,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248977101] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:47:01,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:47:01,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-27 08:47:01,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933962908] [2023-08-27 08:47:01,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:47:01,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 08:47:01,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:01,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 08:47:01,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-08-27 08:47:01,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 08:47:01,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 135 transitions, 2304 flow. Second operand has 18 states, 18 states have (on average 63.833333333333336) internal successors, (1149), 18 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:01,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:01,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 08:47:01,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:02,102 INFO L124 PetriNetUnfolderBase]: 268/584 cut-off events. [2023-08-27 08:47:02,102 INFO L125 PetriNetUnfolderBase]: For 10412/10412 co-relation queries the response was YES. [2023-08-27 08:47:02,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4409 conditions, 584 events. 268/584 cut-off events. For 10412/10412 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3026 event pairs, 2 based on Foata normal form. 1/585 useless extension candidates. Maximal degree in co-relation 4367. Up to 186 conditions per place. [2023-08-27 08:47:02,106 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 67 selfloop transitions, 64 changer transitions 33/164 dead transitions. [2023-08-27 08:47:02,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 164 transitions, 2856 flow [2023-08-27 08:47:02,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 08:47:02,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 08:47:02,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 741 transitions. [2023-08-27 08:47:02,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3893851812926957 [2023-08-27 08:47:02,107 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 741 transitions. [2023-08-27 08:47:02,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 741 transitions. [2023-08-27 08:47:02,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:02,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 741 transitions. [2023-08-27 08:47:02,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 67.36363636363636) internal successors, (741), 11 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:02,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 173.0) internal successors, (2076), 12 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:02,110 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 173.0) internal successors, (2076), 12 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:02,111 INFO L175 Difference]: Start difference. First operand has 159 places, 135 transitions, 2304 flow. Second operand 11 states and 741 transitions. [2023-08-27 08:47:02,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 164 transitions, 2856 flow [2023-08-27 08:47:02,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 164 transitions, 2686 flow, removed 14 selfloop flow, removed 11 redundant places. [2023-08-27 08:47:02,134 INFO L231 Difference]: Finished difference. Result has 153 places, 115 transitions, 1879 flow [2023-08-27 08:47:02,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1879, PETRI_PLACES=153, PETRI_TRANSITIONS=115} [2023-08-27 08:47:02,134 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 125 predicate places. [2023-08-27 08:47:02,134 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 115 transitions, 1879 flow [2023-08-27 08:47:02,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.833333333333336) internal successors, (1149), 18 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:02,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:02,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:02,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 08:47:02,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-08-27 08:47:02,338 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:02,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:02,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1365180121, now seen corresponding path program 2 times [2023-08-27 08:47:02,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:02,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602671823] [2023-08-27 08:47:02,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:02,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:02,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:02,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:02,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602671823] [2023-08-27 08:47:02,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602671823] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:47:02,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607273659] [2023-08-27 08:47:02,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 08:47:02,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:47:02,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:47:02,478 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:47:02,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 08:47:02,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 08:47:02,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:47:02,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 08:47:02,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:47:02,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:02,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:47:02,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:02,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607273659] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:47:02,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:47:02,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2023-08-27 08:47:02,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208325037] [2023-08-27 08:47:02,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:47:02,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 08:47:02,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:02,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 08:47:02,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2023-08-27 08:47:02,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 173 [2023-08-27 08:47:02,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 115 transitions, 1879 flow. Second operand has 19 states, 19 states have (on average 58.8421052631579) internal successors, (1118), 19 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:02,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:02,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 173 [2023-08-27 08:47:02,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:03,067 INFO L124 PetriNetUnfolderBase]: 201/473 cut-off events. [2023-08-27 08:47:03,068 INFO L125 PetriNetUnfolderBase]: For 7508/7508 co-relation queries the response was YES. [2023-08-27 08:47:03,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3410 conditions, 473 events. 201/473 cut-off events. For 7508/7508 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2481 event pairs, 2 based on Foata normal form. 5/478 useless extension candidates. Maximal degree in co-relation 3371. Up to 135 conditions per place. [2023-08-27 08:47:03,070 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 68 selfloop transitions, 61 changer transitions 15/144 dead transitions. [2023-08-27 08:47:03,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 144 transitions, 2388 flow [2023-08-27 08:47:03,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 08:47:03,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 08:47:03,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 685 transitions. [2023-08-27 08:47:03,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3599579611140305 [2023-08-27 08:47:03,072 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 685 transitions. [2023-08-27 08:47:03,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 685 transitions. [2023-08-27 08:47:03,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:03,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 685 transitions. [2023-08-27 08:47:03,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 62.27272727272727) internal successors, (685), 11 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:03,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 173.0) internal successors, (2076), 12 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:03,074 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 173.0) internal successors, (2076), 12 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:03,074 INFO L175 Difference]: Start difference. First operand has 153 places, 115 transitions, 1879 flow. Second operand 11 states and 685 transitions. [2023-08-27 08:47:03,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 144 transitions, 2388 flow [2023-08-27 08:47:03,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 144 transitions, 2150 flow, removed 16 selfloop flow, removed 17 redundant places. [2023-08-27 08:47:03,090 INFO L231 Difference]: Finished difference. Result has 134 places, 107 transitions, 1612 flow [2023-08-27 08:47:03,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1612, PETRI_PLACES=134, PETRI_TRANSITIONS=107} [2023-08-27 08:47:03,091 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 106 predicate places. [2023-08-27 08:47:03,091 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 107 transitions, 1612 flow [2023-08-27 08:47:03,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 58.8421052631579) internal successors, (1118), 19 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:03,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:03,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:03,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 08:47:03,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-27 08:47:03,296 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:03,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:03,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1334620321, now seen corresponding path program 3 times [2023-08-27 08:47:03,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:03,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081644466] [2023-08-27 08:47:03,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:03,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:03,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:03,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:03,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081644466] [2023-08-27 08:47:03,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081644466] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:47:03,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769528792] [2023-08-27 08:47:03,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 08:47:03,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:47:03,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:47:03,412 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:47:03,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 08:47:03,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 08:47:03,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:47:03,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 08:47:03,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:47:03,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:03,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:47:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:03,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769528792] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:47:03,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:47:03,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2023-08-27 08:47:03,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829752684] [2023-08-27 08:47:03,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:47:03,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 08:47:03,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:03,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 08:47:03,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-08-27 08:47:03,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 173 [2023-08-27 08:47:03,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 107 transitions, 1612 flow. Second operand has 19 states, 19 states have (on average 58.63157894736842) internal successors, (1114), 19 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:03,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:03,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 173 [2023-08-27 08:47:03,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:03,921 INFO L124 PetriNetUnfolderBase]: 177/397 cut-off events. [2023-08-27 08:47:03,921 INFO L125 PetriNetUnfolderBase]: For 4705/4705 co-relation queries the response was YES. [2023-08-27 08:47:03,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2850 conditions, 397 events. 177/397 cut-off events. For 4705/4705 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1862 event pairs, 2 based on Foata normal form. 7/404 useless extension candidates. Maximal degree in co-relation 2817. Up to 84 conditions per place. [2023-08-27 08:47:03,923 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 41 selfloop transitions, 32 changer transitions 59/132 dead transitions. [2023-08-27 08:47:03,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 132 transitions, 2073 flow [2023-08-27 08:47:03,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 08:47:03,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 08:47:03,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 679 transitions. [2023-08-27 08:47:03,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35680504466631635 [2023-08-27 08:47:03,924 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 679 transitions. [2023-08-27 08:47:03,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 679 transitions. [2023-08-27 08:47:03,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:03,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 679 transitions. [2023-08-27 08:47:03,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 61.72727272727273) internal successors, (679), 11 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:03,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 173.0) internal successors, (2076), 12 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:03,926 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 173.0) internal successors, (2076), 12 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:03,927 INFO L175 Difference]: Start difference. First operand has 134 places, 107 transitions, 1612 flow. Second operand 11 states and 679 transitions. [2023-08-27 08:47:03,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 132 transitions, 2073 flow [2023-08-27 08:47:03,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 132 transitions, 1877 flow, removed 15 selfloop flow, removed 12 redundant places. [2023-08-27 08:47:03,938 INFO L231 Difference]: Finished difference. Result has 130 places, 62 transitions, 824 flow [2023-08-27 08:47:03,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=824, PETRI_PLACES=130, PETRI_TRANSITIONS=62} [2023-08-27 08:47:03,938 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 102 predicate places. [2023-08-27 08:47:03,938 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 62 transitions, 824 flow [2023-08-27 08:47:03,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 58.63157894736842) internal successors, (1114), 19 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:03,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:03,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:03,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 08:47:04,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-27 08:47:04,143 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:04,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:04,143 INFO L85 PathProgramCache]: Analyzing trace with hash 106573405, now seen corresponding path program 4 times [2023-08-27 08:47:04,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:04,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602020446] [2023-08-27 08:47:04,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:04,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:04,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:04,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:04,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602020446] [2023-08-27 08:47:04,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602020446] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:47:04,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399983788] [2023-08-27 08:47:04,230 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 08:47:04,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:47:04,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:47:04,231 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:47:04,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 08:47:04,284 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 08:47:04,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:47:04,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 08:47:04,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:47:04,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:04,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:47:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:04,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399983788] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:47:04,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:47:04,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-27 08:47:04,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223660871] [2023-08-27 08:47:04,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:47:04,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 08:47:04,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:04,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 08:47:04,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-08-27 08:47:04,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 08:47:04,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 62 transitions, 824 flow. Second operand has 15 states, 15 states have (on average 63.53333333333333) internal successors, (953), 15 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:04,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:04,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 08:47:04,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:04,893 INFO L124 PetriNetUnfolderBase]: 89/234 cut-off events. [2023-08-27 08:47:04,893 INFO L125 PetriNetUnfolderBase]: For 2061/2061 co-relation queries the response was YES. [2023-08-27 08:47:04,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 234 events. 89/234 cut-off events. For 2061/2061 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1021 event pairs, 1 based on Foata normal form. 4/238 useless extension candidates. Maximal degree in co-relation 1470. Up to 66 conditions per place. [2023-08-27 08:47:04,895 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 36 selfloop transitions, 36 changer transitions 14/86 dead transitions. [2023-08-27 08:47:04,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 86 transitions, 1140 flow [2023-08-27 08:47:04,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 08:47:04,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 08:47:04,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 992 transitions. [2023-08-27 08:47:04,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38227360308285163 [2023-08-27 08:47:04,896 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 992 transitions. [2023-08-27 08:47:04,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 992 transitions. [2023-08-27 08:47:04,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:04,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 992 transitions. [2023-08-27 08:47:04,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 66.13333333333334) internal successors, (992), 15 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:04,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 173.0) internal successors, (2768), 16 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:04,900 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 173.0) internal successors, (2768), 16 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:04,900 INFO L175 Difference]: Start difference. First operand has 130 places, 62 transitions, 824 flow. Second operand 15 states and 992 transitions. [2023-08-27 08:47:04,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 86 transitions, 1140 flow [2023-08-27 08:47:04,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 86 transitions, 967 flow, removed 24 selfloop flow, removed 18 redundant places. [2023-08-27 08:47:04,906 INFO L231 Difference]: Finished difference. Result has 105 places, 55 transitions, 647 flow [2023-08-27 08:47:04,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=647, PETRI_PLACES=105, PETRI_TRANSITIONS=55} [2023-08-27 08:47:04,906 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 77 predicate places. [2023-08-27 08:47:04,906 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 55 transitions, 647 flow [2023-08-27 08:47:04,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 63.53333333333333) internal successors, (953), 15 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:04,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:04,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:04,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-27 08:47:05,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-27 08:47:05,116 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:05,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:05,117 INFO L85 PathProgramCache]: Analyzing trace with hash 935482781, now seen corresponding path program 5 times [2023-08-27 08:47:05,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:05,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735613265] [2023-08-27 08:47:05,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:05,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:05,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:05,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:05,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735613265] [2023-08-27 08:47:05,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735613265] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:47:05,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12395060] [2023-08-27 08:47:05,200 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 08:47:05,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:47:05,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:47:05,201 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:47:05,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 08:47:05,255 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 08:47:05,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:47:05,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-27 08:47:05,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:47:05,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:05,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:47:05,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:05,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12395060] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:47:05,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:47:05,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2023-08-27 08:47:05,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735195446] [2023-08-27 08:47:05,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:47:05,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 08:47:05,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:05,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 08:47:05,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-08-27 08:47:05,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 08:47:05,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 55 transitions, 647 flow. Second operand has 15 states, 15 states have (on average 63.93333333333333) internal successors, (959), 15 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:05,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:05,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 08:47:05,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:05,603 INFO L124 PetriNetUnfolderBase]: 82/205 cut-off events. [2023-08-27 08:47:05,603 INFO L125 PetriNetUnfolderBase]: For 1231/1231 co-relation queries the response was YES. [2023-08-27 08:47:05,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1263 conditions, 205 events. 82/205 cut-off events. For 1231/1231 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 812 event pairs, 1 based on Foata normal form. 8/213 useless extension candidates. Maximal degree in co-relation 1240. Up to 72 conditions per place. [2023-08-27 08:47:05,605 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 36 selfloop transitions, 28 changer transitions 17/81 dead transitions. [2023-08-27 08:47:05,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 81 transitions, 954 flow [2023-08-27 08:47:05,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 08:47:05,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 08:47:05,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 927 transitions. [2023-08-27 08:47:05,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3827415359207267 [2023-08-27 08:47:05,606 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 927 transitions. [2023-08-27 08:47:05,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 927 transitions. [2023-08-27 08:47:05,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:05,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 927 transitions. [2023-08-27 08:47:05,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 66.21428571428571) internal successors, (927), 14 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:05,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 173.0) internal successors, (2595), 15 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:05,610 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 173.0) internal successors, (2595), 15 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:05,610 INFO L175 Difference]: Start difference. First operand has 105 places, 55 transitions, 647 flow. Second operand 14 states and 927 transitions. [2023-08-27 08:47:05,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 81 transitions, 954 flow [2023-08-27 08:47:05,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 81 transitions, 909 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-27 08:47:05,613 INFO L231 Difference]: Finished difference. Result has 106 places, 51 transitions, 601 flow [2023-08-27 08:47:05,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=601, PETRI_PLACES=106, PETRI_TRANSITIONS=51} [2023-08-27 08:47:05,615 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 78 predicate places. [2023-08-27 08:47:05,615 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 51 transitions, 601 flow [2023-08-27 08:47:05,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 63.93333333333333) internal successors, (959), 15 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:05,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:05,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:05,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-27 08:47:05,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-27 08:47:05,819 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:05,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:05,819 INFO L85 PathProgramCache]: Analyzing trace with hash 966042581, now seen corresponding path program 6 times [2023-08-27 08:47:05,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:05,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202635288] [2023-08-27 08:47:05,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:05,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:05,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:05,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202635288] [2023-08-27 08:47:05,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202635288] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:47:05,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073094658] [2023-08-27 08:47:05,912 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 08:47:05,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:47:05,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:47:05,913 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:47:05,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 08:47:05,970 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 08:47:05,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:47:05,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 08:47:05,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:47:06,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:06,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:47:06,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:06,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073094658] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:47:06,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:47:06,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-27 08:47:06,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234745943] [2023-08-27 08:47:06,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:47:06,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 08:47:06,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:06,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 08:47:06,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-08-27 08:47:06,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 08:47:06,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 51 transitions, 601 flow. Second operand has 16 states, 16 states have (on average 63.5) internal successors, (1016), 16 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:06,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:06,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 08:47:06,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:06,527 INFO L124 PetriNetUnfolderBase]: 67/170 cut-off events. [2023-08-27 08:47:06,527 INFO L125 PetriNetUnfolderBase]: For 1083/1083 co-relation queries the response was YES. [2023-08-27 08:47:06,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1058 conditions, 170 events. 67/170 cut-off events. For 1083/1083 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 605 event pairs, 1 based on Foata normal form. 2/172 useless extension candidates. Maximal degree in co-relation 1033. Up to 55 conditions per place. [2023-08-27 08:47:06,528 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 34 selfloop transitions, 26 changer transitions 10/70 dead transitions. [2023-08-27 08:47:06,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 70 transitions, 818 flow [2023-08-27 08:47:06,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 08:47:06,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 08:47:06,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 920 transitions. [2023-08-27 08:47:06,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37985136251032203 [2023-08-27 08:47:06,531 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 920 transitions. [2023-08-27 08:47:06,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 920 transitions. [2023-08-27 08:47:06,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:06,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 920 transitions. [2023-08-27 08:47:06,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 65.71428571428571) internal successors, (920), 14 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:06,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 173.0) internal successors, (2595), 15 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:06,534 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 173.0) internal successors, (2595), 15 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:06,534 INFO L175 Difference]: Start difference. First operand has 106 places, 51 transitions, 601 flow. Second operand 14 states and 920 transitions. [2023-08-27 08:47:06,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 70 transitions, 818 flow [2023-08-27 08:47:06,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 70 transitions, 704 flow, removed 4 selfloop flow, removed 15 redundant places. [2023-08-27 08:47:06,537 INFO L231 Difference]: Finished difference. Result has 100 places, 47 transitions, 491 flow [2023-08-27 08:47:06,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=491, PETRI_PLACES=100, PETRI_TRANSITIONS=47} [2023-08-27 08:47:06,537 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 72 predicate places. [2023-08-27 08:47:06,537 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 47 transitions, 491 flow [2023-08-27 08:47:06,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 63.5) internal successors, (1016), 16 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:06,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:06,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:06,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 08:47:06,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:47:06,745 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:06,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:06,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1539484513, now seen corresponding path program 7 times [2023-08-27 08:47:06,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:06,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873065469] [2023-08-27 08:47:06,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:06,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:06,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:06,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873065469] [2023-08-27 08:47:06,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873065469] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:47:06,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316545350] [2023-08-27 08:47:06,845 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 08:47:06,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:47:06,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:47:06,846 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:47:06,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 08:47:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:06,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 08:47:06,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:47:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:06,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:47:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:07,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316545350] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:47:07,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:47:07,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-27 08:47:07,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908723182] [2023-08-27 08:47:07,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:47:07,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 08:47:07,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:07,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 08:47:07,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-08-27 08:47:07,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 08:47:07,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 47 transitions, 491 flow. Second operand has 18 states, 18 states have (on average 63.44444444444444) internal successors, (1142), 18 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:07,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:07,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 08:47:07,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:07,326 INFO L124 PetriNetUnfolderBase]: 72/172 cut-off events. [2023-08-27 08:47:07,326 INFO L125 PetriNetUnfolderBase]: For 959/959 co-relation queries the response was YES. [2023-08-27 08:47:07,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1045 conditions, 172 events. 72/172 cut-off events. For 959/959 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 595 event pairs, 3 based on Foata normal form. 3/175 useless extension candidates. Maximal degree in co-relation 1021. Up to 37 conditions per place. [2023-08-27 08:47:07,327 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 23 selfloop transitions, 12 changer transitions 33/68 dead transitions. [2023-08-27 08:47:07,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 68 transitions, 786 flow [2023-08-27 08:47:07,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 08:47:07,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 08:47:07,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 723 transitions. [2023-08-27 08:47:07,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992643194955333 [2023-08-27 08:47:07,328 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 723 transitions. [2023-08-27 08:47:07,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 723 transitions. [2023-08-27 08:47:07,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:07,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 723 transitions. [2023-08-27 08:47:07,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 65.72727272727273) internal successors, (723), 11 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:07,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 173.0) internal successors, (2076), 12 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:07,330 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 173.0) internal successors, (2076), 12 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:07,330 INFO L175 Difference]: Start difference. First operand has 100 places, 47 transitions, 491 flow. Second operand 11 states and 723 transitions. [2023-08-27 08:47:07,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 68 transitions, 786 flow [2023-08-27 08:47:07,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 68 transitions, 680 flow, removed 9 selfloop flow, removed 15 redundant places. [2023-08-27 08:47:07,332 INFO L231 Difference]: Finished difference. Result has 90 places, 31 transitions, 275 flow [2023-08-27 08:47:07,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=275, PETRI_PLACES=90, PETRI_TRANSITIONS=31} [2023-08-27 08:47:07,333 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 62 predicate places. [2023-08-27 08:47:07,333 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 31 transitions, 275 flow [2023-08-27 08:47:07,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.44444444444444) internal successors, (1142), 18 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:07,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:07,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:07,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-27 08:47:07,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:47:07,538 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:07,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:07,538 INFO L85 PathProgramCache]: Analyzing trace with hash -909548693, now seen corresponding path program 8 times [2023-08-27 08:47:07,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:07,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670338140] [2023-08-27 08:47:07,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:07,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:07,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:07,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:07,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670338140] [2023-08-27 08:47:07,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670338140] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:47:07,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388733612] [2023-08-27 08:47:07,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 08:47:07,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:47:07,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:47:07,616 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 08:47:07,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 08:47:07,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 08:47:07,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:47:07,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 08:47:07,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:47:07,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:07,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:47:07,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:07,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388733612] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:47:07,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:47:07,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-27 08:47:07,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099470717] [2023-08-27 08:47:07,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:47:07,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 08:47:07,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:07,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 08:47:07,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-08-27 08:47:07,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 173 [2023-08-27 08:47:07,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 31 transitions, 275 flow. Second operand has 18 states, 18 states have (on average 63.44444444444444) internal successors, (1142), 18 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:07,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:07,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 173 [2023-08-27 08:47:07,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:08,052 INFO L124 PetriNetUnfolderBase]: 34/90 cut-off events. [2023-08-27 08:47:08,052 INFO L125 PetriNetUnfolderBase]: For 356/356 co-relation queries the response was YES. [2023-08-27 08:47:08,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 90 events. 34/90 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 223 event pairs, 3 based on Foata normal form. 3/93 useless extension candidates. Maximal degree in co-relation 474. Up to 21 conditions per place. [2023-08-27 08:47:08,053 INFO L140 encePairwiseOnDemand]: 165/173 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2023-08-27 08:47:08,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 36 transitions, 355 flow [2023-08-27 08:47:08,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 08:47:08,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 08:47:08,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 584 transitions. [2023-08-27 08:47:08,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37508028259473347 [2023-08-27 08:47:08,054 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 584 transitions. [2023-08-27 08:47:08,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 584 transitions. [2023-08-27 08:47:08,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:08,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 584 transitions. [2023-08-27 08:47:08,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.88888888888889) internal successors, (584), 9 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:08,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:08,055 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:08,056 INFO L175 Difference]: Start difference. First operand has 90 places, 31 transitions, 275 flow. Second operand 9 states and 584 transitions. [2023-08-27 08:47:08,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 36 transitions, 355 flow [2023-08-27 08:47:08,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 36 transitions, 299 flow, removed 6 selfloop flow, removed 14 redundant places. [2023-08-27 08:47:08,057 INFO L231 Difference]: Finished difference. Result has 72 places, 0 transitions, 0 flow [2023-08-27 08:47:08,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=72, PETRI_TRANSITIONS=0} [2023-08-27 08:47:08,057 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 44 predicate places. [2023-08-27 08:47:08,057 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 0 transitions, 0 flow [2023-08-27 08:47:08,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.44444444444444) internal successors, (1142), 18 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:08,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2023-08-27 08:47:08,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-27 08:47:08,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-08-27 08:47:08,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-27 08:47:08,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-27 08:47:08,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-27 08:47:08,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-27 08:47:08,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-27 08:47:08,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (10 of 19 remaining) [2023-08-27 08:47:08,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 19 remaining) [2023-08-27 08:47:08,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2023-08-27 08:47:08,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-27 08:47:08,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-27 08:47:08,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-27 08:47:08,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-27 08:47:08,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-27 08:47:08,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-27 08:47:08,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-27 08:47:08,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-27 08:47:08,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-27 08:47:08,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:47:08,265 INFO L445 BasicCegarLoop]: Path program histogram: [8, 6, 5, 5, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:08,268 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 08:47:08,268 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 08:47:08,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 08:47:08 BasicIcfg [2023-08-27 08:47:08,272 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 08:47:08,272 INFO L158 Benchmark]: Toolchain (without parser) took 19684.10ms. Allocated memory was 371.2MB in the beginning and 717.2MB in the end (delta: 346.0MB). Free memory was 347.4MB in the beginning and 520.4MB in the end (delta: -173.1MB). Peak memory consumption was 175.1MB. Max. memory is 16.0GB. [2023-08-27 08:47:08,273 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 371.2MB. Free memory was 348.3MB in the beginning and 348.3MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 08:47:08,273 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.48ms. Allocated memory is still 371.2MB. Free memory was 347.4MB in the beginning and 336.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 08:47:08,273 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.42ms. Allocated memory is still 371.2MB. Free memory was 336.2MB in the beginning and 334.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 08:47:08,273 INFO L158 Benchmark]: Boogie Preprocessor took 27.51ms. Allocated memory is still 371.2MB. Free memory was 334.8MB in the beginning and 333.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 08:47:08,273 INFO L158 Benchmark]: RCFGBuilder took 348.76ms. Allocated memory is still 371.2MB. Free memory was 333.3MB in the beginning and 319.1MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 08:47:08,273 INFO L158 Benchmark]: TraceAbstraction took 19085.40ms. Allocated memory was 371.2MB in the beginning and 717.2MB in the end (delta: 346.0MB). Free memory was 318.6MB in the beginning and 520.4MB in the end (delta: -201.9MB). Peak memory consumption was 145.8MB. Max. memory is 16.0GB. [2023-08-27 08:47:08,277 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 371.2MB. Free memory was 348.3MB in the beginning and 348.3MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 190.48ms. Allocated memory is still 371.2MB. Free memory was 347.4MB in the beginning and 336.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.42ms. Allocated memory is still 371.2MB. Free memory was 336.2MB in the beginning and 334.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.51ms. Allocated memory is still 371.2MB. Free memory was 334.8MB in the beginning and 333.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 348.76ms. Allocated memory is still 371.2MB. Free memory was 333.3MB in the beginning and 319.1MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 19085.40ms. Allocated memory was 371.2MB in the beginning and 717.2MB in the end (delta: 346.0MB). Free memory was 318.6MB in the beginning and 520.4MB in the end (delta: -201.9MB). Peak memory consumption was 145.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 84 PlacesBefore, 28 PlacesAfterwards, 83 TransitionsBefore, 23 TransitionsAfterwards, 1088 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 0 ConcurrentYvCompositions, 4 ChoiceCompositions, 79 TotalNumberOfCompositions, 1106 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1035, independent: 1024, independent conditional: 0, independent unconditional: 1024, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 529, independent: 525, independent conditional: 0, independent unconditional: 525, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1035, independent: 499, independent conditional: 0, independent unconditional: 499, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 529, unknown conditional: 0, unknown unconditional: 529] , Statistics on independence cache: Total cache size (in pairs): 39, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: 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, 123 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: 19.0s, OverallIterations: 42, TraceHistogramMax: 2, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 7.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1611 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1611 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 347 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7489 IncrementalHoareTripleChecker+Invalid, 7836 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 347 mSolverCounterUnsat, 0 mSDtfsCounter, 7489 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 770 GetRequests, 251 SyntacticMatches, 26 SemanticMatches, 493 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2283 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3067occurred in iteration=27, InterpolantAutomatonStates: 369, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 630 NumberOfCodeBlocks, 630 NumberOfCodeBlocksAsserted, 71 NumberOfCheckSat, 756 ConstructedInterpolants, 0 QuantifiedInterpolants, 4738 SizeOfPredicates, 50 NumberOfNonLiveVariables, 1808 ConjunctsInSsa, 194 ConjunctsInUnsatCore, 74 InterpolantComputations, 28 PerfectInterpolantSequences, 28/110 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 08:47:08,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...